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Addendum #4 – June 13, 2011 RFP – Designer Assist Proposal West Haymarket Civic Arena Structural, Enclosure, Conveying & MEP Systems Designer Assist Services Addendum # 4 Items: 1. RFC Clarification Response List (attached). 2. Specification 312000 – Earthmoving Civil Specification (attached) 3. Revised Low Voltage Proposal Breakdown Form 4. Revised Structural Steel Proposal Form to include steel allowances and connection design amount. 5. Concrete proposals are to be submitted to Paula Yancey at the following address: PC Sports The Apothecary 140 North 8th Street, Suite 220 Lincoln, NE 68508 Email: email@example.com 6. All proposals including paper copies must be received on Friday, June 17, 2011 at 12:00 pm. End of Addendum #4 NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response Global 1 Global 1 Are we to go through you to obtain documents from A&D Technical Mort Proposers should obtain documents from A&D Technical Supply, or should we contact them directly? Supply. Contact information is 402-474-5454 2 Global 1 The bid invite noted that you will be hosting a pre-proposal meeting next Mort The pre-proposal meeting will be located at the Tuesday, June 7, 2011 at 10am. Will this be a meeting covering all Cornhusker Marriott on June 7, 2011 at 10:00 AM. The trades? Will this be a meeting required for bidders? meeting will cover all trades. It is not required for proposers to attend the meeting. Meeting minutes will be issued in a future addendum. 3 Global 2 Please advise if visual mock ups are required. If so, please provide Mort Mock-ups will be required for curtainwall and metal panel mock up materials scope. scopes. Mock-ups will also be required in accordance with Mortenson's quality management plan and the described inspection process in Exhibit L. 4 Global 2 Please advise if the building model will be available for the RFP bidding Mort No process. 5 Global 2 Please advise if onsite parking will be available for field personnel or will Mort Off site parking will be required for field workers. offsite parking be required. 6 Global 2 Please advise if a forklift and operator will be provided by Mort Unloading and hoisting is the responsibility of each Mortenson/Hampton at no charge for material unloading and distribution Subcontractor. to installation location. 7 Global 2 ARRA [Buy America] or LEED considerations? Mort Not at this time 8 Global 2 The Bid Invitation states that 2 hard copies of the bid shall be delivered Mort Paper copies of proposals are due on Friday June 17, to your office in Lincoln, NE on Friday June 17, 2011 at 12:00pm. It also 2011 at 12:00 along with electronic copies. states that bids can be emailed. Can you please confirm if it will be acceptable to have our bid emailed in by the June 17 deadline, with the hard copies being mailed in for the following business day? 9 Global 2 Is it possible to have a one week extension to June 24th for proposal Mort Proposals are still due on June 17th at 12:00pm submission? 10 Global 2 When reviewing the prevailing wage requirement, State of Nebraska Mort Reference the new Davis Bacon Document dated Feb. Decision NE2010005 dated 10/29/2010 NE5, we found a newer 25, 2011 document dated February of this year. Please advise which document is to be used. If the preceding decision dated October 2010 is to be used, please provide the document for reference as we can only access the February document 11 Global 2 Is there a scheduled number or frequency of BIM coordination meetings Mort BIM coordination meetings will be held weekly at that we can plan for? Mortenson's site office. 12 Global 2 Do we need to include any costs for special equipment or personnel Mort Yes, see BNSF requirements attached with MAM training for work within the railroad right-of-way? Subcontract Agreement. There is a fee to orientate each worker. 1 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 13 Global 1 Reference Instructions to Proposers Section 2, paragraph 15.02. This Mort Reference the agreement between Construction paragraph indications all subcontracts will include provisions for Manager and Owner. This agreement is available at liquidated damages. Please provide the details for the liquidated www.haymarketnow.com within the 4/14/11 JPA damages Meetings/attachments. 14 Global 2 In reference to the weekly meetings between the modeling team, will Mort We would prefer 3D modelers attend the weekly remote parties be able to participate via teleconference coordination meetings however it may be possible to attend via teleconference. 15 Global 3 Exhibit M Clarify what documentation is required for LBE participation. Mort Provide a breakdown of the companies within your team and their locations. 16 Global 3 Exhibit P Clarify if there is a minimum pipe size required in the BIM model for Mort All mechanical/plumbing piping associated with the hydronic and plumbing systems. In the past, anything under 2" is not mechanical equipment will be modeled to each piece of modeled. equipment. 17 Global 3 Exhibit P Will the mechanical/plumbing engineer provide 3D files to the Mort Refer to Addendum #2 Meeting Minutes. It is uncertain if mechanical contractor for development of the BIM model? the A/E's model will be available. 18 Global 3 Referencing "Instructions to Proposers - Item 14.00 – Taxes", This Mort Include sales tax on all consumable items. Sales tax on paragraph seems to state that the contractor will pay taxes. items that are permanent to the building should be But goes on to say that taxes may be excluded later. Should our excluded. Refer to sales tax languange for additional proposal pricing include tax? information. Concrete 1 Concrete 1 Please confirm that the CMU work is no longer part of the Concrete Mort Confirmed. CMU is not included with this RFP proposal. Superstructure scope of work. 2 Concrete 1 SS0.2 Mort F'c = 4000 psi for foundations and walls Reference SS0.2 - General Notes. Please provide mix strengths for foundations and walls. Not shown on Sheet SS0.2 - General Notes 3 Concrete 1 Reference Foundation plans. Please provide grade beam sizes and DLR / Buro At this time, the typical grade beam sizes are 30" widex reinforcing requirements 40" deep w/ 4 - #10 t&B, #4 stirrups at 1'-3" oc, and #3 skin reinforcing at 7" oc on each face. Additional information will be provided on progress set provided on June 13th. 4 Concrete 1 SS1.1A, Reference Sheet S1.1A (05/09/11) and SS2.1A (05/23/11). The shape DLR / Buro SS2.1A of the Event Level is different on these to two plans. On S1.1A, the 8" slab on grade steps in to GL-F.6 along GL-3, but on SS2.1A the perimeter of the building continues west along GL-F.9. Please clarify 2 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 5 Concrete 1 Reference Instructions to Proposers Section 3a, Item stairs. Will any of DLR / Buro The grand lobby stair has not been designed yet, but the the stairs in the arena be designed as cast-in-place? What is the typical intent is this stair will be concrete with epoxy terrazzo on stair tower design? Please provide the design requirements if the the treads and risers. All main exit stairs and upper answer to either of the stair related questions is yes concourse vomitory stairs are metal pan stairs. All bowl seating stairs are cast in place concrete. All stairs will be capable of supporting 100psf live load. Vibration and deflection are to be within the code specified limit. Proposers should include detail 1/SS10.6 as a typical stair in their proposal. 6 Concrete 1 Reference concrete waterproofing shake-on: Will a product similar to DLR / Buro Yes Xypex be required at the concessions and toilet rooms on the elevated slabs? 7 Concrete 1 S2.2 Reference detail 42 on S2.2 (05-09-11). The detail titled “Typ. Square DLR / Buro Depth of pile caps are called out on the pile cap details. Pile Cap Detail” indicates that the depth of the pile cap is “PER PLAN”. Refer to plans to determine which pile cap is being called The plans do not indicate the depth of the pile caps. Please provide out. 8 Concrete 1 Reference Instructions to Proposers Section 3A, Item E, Excavation and Mort No, assume industry standards Backfill, on page 11of 38. Will earthwork related specifications be issued for the concrete scope of work? 9 Concrete 1 Reference Instructions to Proposers Section 3A, Item L, Foundation Clark There will be concrete plinths at the 10" structured slab Piers and Plinths, on page 12 of 38. After reviewing the drawings no Enersen? locations where column below slab will be 4'-6" x4'-6" piers or plinths are identified or details provide. Should we assume that wide below structured slab at these locations. At this the piers and plinths will be located below the steel columns? time, It is anticipated at the following columns: F- 11.22.23,24,25,26,27. 10 Concrete 1 Reference Instructions to Proposers Section 3A, Item N, Pit walls, on DLR / Buro Two dock levelers will be in the Marshalling area only. page 12 of 38. After reviewing the structural and architectural drawings They are planned at 7 ft. wide x 10 ft. long. no dock levelers are indicated. However the Landscape drawing L1.1 shows 2 dock levelers at the north end of the arena. Will this be the extent of the dock levelers? 11 Concrete 1 L1.1 Reference L1.1. This drawing indicates a “Food and Beverage Dock” Mort / DLR / along the west elevations but is not indicated on the architectural or Buro structural drawings. Will this dock be required? If so, please provide details for this location. 12 Concrete 1 Reference Instructions to Proposers Section 3A, Item P, Insulated DLR / Buro Yes, include an 8" depressed slab at all event level freezer floors, on page 12 of 38. After reviewing the structural, freezer and cooler rooms. Include 4 inches of insulation architectural and food service drawings, the insulated freezer floors are and 4 inches of concrete to fill the depression. Include a not indicated. On food service plan, FS1.1, five rooms along the west 2 x 6 treated lumber the depth of the depression at the side of the floor plan indicate “freezer” or “cooler” should we include the perimeter. freezer floors for these spaces? Or please provide a key plan indicating the locations of the freezers and/or provide an allowance of rooms and sizes to use in our proposal. 3 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 13 Concrete 1 AN1.1A Reference drawings AN1.1A, C and D. On these architectural drawings Mort 1. Ice pit: pad dimensions for ice pit are 12’-0”x6'x2' are pits indicated for the ice melt system. The size and depth of these deep (inside dimension of pit is 10'x4') with 150 lb/cy. pits are not provided. Please provide details for the two pit locations Top of pad is approximately 6’ below arena floor elevation. Pit walls will be approximately 8” thick concrete wall with 5 psf of rebar. 2. Snow melt pit: pad dimensions for snow melt are 14’- 0”x6'x2' deep (inside dimension of pit is 12'x4') with 150 lb/cy. Top of pad is approximately 4’ below arena floor elevation. Pit walls will be approximately 8” thick concrete wall with 5 psf of rebar. 14 Concrete 1 Reference Instructions to Proposers Section 3A, Item S, Pipe Bollards, Mort Yes, assume 8" pipe bollards. Quantity 100. Include a 1 on page 12 of 38. No bollards are indicated on the structural and CY footing just below the slab in addition to the concrete architectural. Will 100 bollards be a sufficient quantity? needed to fill the bollard. 15 Concrete 1 Reference Instructions to Proposers Section 3A, Item G.1, Formwork, on DLR Yes - Exposed columns should be a Class C finish. page 12 of 38. Will any of the exposed columns be required to receive a Class C level of finish? 16 Concrete 1 Reference Elevator and Escalator pit depths. On the vertical DLR Final depth will be per elevator manufacturer selected for transportation drawings, the elevator pits are indicated as 6’-2” or 8’-7” project. deep. The escalator pits are indicated as 4’-0” deep and typically, the elevator pits are 4’-0” deep as well. Could the pits be 4’-0” deep? Mort Response: Assume pit dimensions as shown on the drawings in your proposal. 17 Concrete 1 Reference Instructions to Proposers Section 3A, Item O, Trenches, on DLR While the design is not finalized, the intent is all piping page 12 of 38. Will any trenches be required from the Ice Slab to the Ice will be buried. Plant room? 18 Concrete 1 AN1.2C&D Reference AN1.2C and D. It appears that part of the east elevation of DLR / Buro the arena will require a foundation wall. Is this correct? What will be the dimensions and reinforcing for this wall? 19 Concrete 1 Reference Main Concourse Level – What size are the independent DLR / Buro Based on current design the beam at linc is 24" wide x beams located on Grid C? 30" deep 20 Concrete 1 Reference Premium Level Area B & C – What size are the independent Buro The F line beam is 48" wide x 28.75" deep, The E line beams located on Grids F & E beam is 36" wide x 28.75" deep 21 Concrete 1 Reference Premium Level – What size are the cantilevered beams on Buro The cantilever beam is 30" wide by 28.75" deep the bent lines located from Grid D inward toward the seating bowl? 22 Concrete 1 Reference Premium Level Area E – What size are the independent Buro At this stage of the design, the beam size is 36" wide by beams located on Grid K? 36" deep. As design progresses, any revisions will be provided in updated models and drawings. 4 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 23 Concrete 1 AB7.1, AB7.2 Reference AB7.1 and AB7.2, ADA and Camera platforms. What is the DLR / Buro The general construction for the ADA and camera general construction of the platform walls and slabs? Will the walls be platforms are preferred to be precast walls and slabs. concrete masonry units and the slab will be reinforced concrete slab on The platforms will be permanent so final design is 3” metal deck (overall thickness 5-1/2”)? subject to cost. 24 Concrete 2 Reference Elevator and Escalator pit slabs. Please provide sizes and Mort Assume 100 lbs per CY reinforcing for the elevator and escalator pits located on the Event Level. 25 Concrete 2 Reference S2.1, detail 56, Typ. Stoop Detail. Please provide height of DLR Typical elevator pits are 8'-7" deep. See arch plan for grade beam. Will the height be the same as the perimeter grade beam? footprint. Typical pile cap/pad dimesions wll be 1'-0" wider than outside face of 12" concrete walls. Pit walls will be approximately 8” thick concrete wall with 5 psf of rebar. 26 Concrete 2 Reference S2.2, detail 42, Typ. Square Pile Cap Detail. This detail DLR / Buro Stoop footings will be 1'-6 x 3'-0" deep with 2-#8 top and illustrates reinforcing in both the bottom and the top of the pile cap, but bottom. the Pile Cap Layout Details (21/S2.2) only indicated reinforcing in the bottom. Is an additional layer of reinforcing required in the top of the pile cap and tied to the bottom layer? 27 Concrete 2 Reference SS2.5E – Is the slab opening north of Grid K between Grids Buro Refer to detail 21/S2.2 and specific callouts at each pile 31.5 and 32 intended to be a stair opening? Will the slab edge adjacent cap type. At this point in the design, there are no pile to this opening require a perimeter beam? If so, what size? If this slab caps that require top reinforcing. edge does require a perimeter beam how will that work if the beam runs through the elevator opening? Please clarify this area 28 Concrete 2 Reference Area E Columns. Please provide sizes and reinforcing for the Buro columns located outside of Grid Line F in Area E. It appears that these columns could be steel. On the foundation level, there appears to be two columns along grid line L 29 Concrete 2 Reference SS2.6A vs. Bldg Sections – Sheet SS2.6A calls out the beam DLR The correct beam size per current design 48” wide x 28 on Grid F to be 36” wide x 28 ¾” deep. The Bldg Sections call for this ¾” deep beam to be 48” wide x 28 ¾” deep. Which is correct? 30 Concrete 2 Reference detail 42 on S2.2 (05-09-11). The detail titled “Typ. Square Buro The typical pile cap and grade beam elevation is 99'-0 Pile Cap Detail” indicates that the depth top of the pile cap is “PER with various pile cap elevation adjustments made based PLAN”. The plans do not indicate the depth top of the pile caps. Please on elevator pit depths, railroad line phasing concerns and provide. site grades. 5 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 31 Concrete 2 There appears to be several pieces of conflicting information regarding Buro Refer to SS3.3 for correct column sizes per current the columns on lines D & E. design. 1. Per the plan views: SS2.3A & SS2.3C - Note states, 30" Square Cast in Place Columns, Typ. Grid Lines D & E. SS2.3D - Note states, 36" Square Cast in Place Columns, Typ. Grid Lines D & E. Section SS3.1 indicates that E line columns are 30" and D line columns are 24". Which is correct. 2. Per the section views: SS3.1 indicates E line columns are 30" and D line columns are 24". However, SS3.2 & SS3.3 indicate that E line columns are 36" and D line columns are 30". 3. Please clarify if all D line columns are TYP size at all locations around the bowl and what that size is. 4. Please clarify if all E line columns are TYP size at all locations around the bowl and what that size is 32 Concrete 2 SS2.3C - Note States, 36" Square Cast in Place Columns but points to a Buro At grid 16-E and 17-E: 36X36 column below main round column that is located at 16E and 17E. Is the column square per concourse and 30" round column above. the comment or round per the design? Size to also be verified per RFI #2 - Item #31 33 Concrete 2 No column sizes are provided for columns outside of grid line F at any DLR / Mort Column sizes will be provided in for the submission on level in any sector. Please provide July 7th. Assume 36"x36" columns. 34 Concrete 2 Reference S1.1A, Event Level Foundation Plan - Area A. Starting at the DLR / Buro There will be a retaining wall at this location. Please intersection of grid lines L and 1.3 and following the perimeter to the reference updated drawings provided on June 13th for intersection of grid lines F.6 and 3 is a wider "footing". Is this for a clarification. The elevation step is due to the 8'-7 deep retaining wall? After reviewing the civil grading plans and the parking elevator pits for the 2 elevators and not due to site grade garage floor plans, it appears that the Event Level floor plan is at changes. relatively the same elevations. Is a retaining wall and footing required at these locations 35 Concrete 2 Reference SS9.0, Stair Elevations. In detail 2, Typical Stair Elevation – Mort Interior, at column line 4.1 and 4.2 appear to rest on a substructure just below the floor slab. What type of foundation will support the columns located at 4.1 and 4.2 36 Concrete 2 The documents are not far enough along to provide details for the DLR / Mort Proposers should include an allowance of 1500 embeds. necessary misc. metal embeds in the cast-in-place concrete (i.e. Anchor bolt template is considered one embed. elevator hoistways, escalator connections, stair connections, steel framing connections, enclosure connections, etc…). Please provide approximate number of embeds or an allowance to include in our bid. 6 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 37 Concrete 2 Reference 00 03 00 Cast-in-Place Concrete Specifications, 3.13 Mort Mort Response: For the purposes of this proposal, Concrete Protecting and Curing. What areas to receive floor coverings include all slabs as being water cured. will require moisture-retaining-cover to cure concrete surfaces? Unable to determine at this time because the room finish schedule is not provided. 38 Concrete 2 Reference site related services provided by CM. Will the construction Mort Wash out pit to be on site. manager provide a concrete washout for the ready-mix truck on site? 39 Concrete 2 Reference North Loading Dock foundation wall. It appears from the DLR / Buro grading plan, C1.1 that the north loading dock paving is four to five feet lower than the Event Level slab. This elevation change would suggest that a foundation wall is required, but the foundation plans do not show this wall in plan or with any details. Please provide a clarification on the limits of the foundation wall located above the perimeter grade beam 40 Concrete 2 Reference sheet SS3.3 and 3/SS7.0. Sheet SS3.3 calls for a 48 x 48 DLR / Buro The beam size is 48"x48" concrete beam at B.O. Truss. Detail 3/SS7.0 shows dimensions for a 60 x 60 beam at B.O. Truss. Which is the correct size 41 Concrete 3 Reference Architectural floor plan AN1.3E and Structural floor plan DLR / Buro SS2.3E. Please provide a standard detail for the slab edge condition along grid line L at the Roof Deck Plaza. The roof edge is located approximately 7’9” from grid line L and creates an extreme overhang condition 42 Concrete Reference sheet SS0.2. The pan & joist slab system reinforcing factor DLR / Mort does not provide for dowels, waste, and splices. Please provide factor similar to columns and beams 43 Concrete Section 00300 Cast-in-place concrete paragraph 2.5-C-1 max coarse DLR aggregate shall be ASTM-C33 Size #6. Will it be permissible to use Nebraska Department of Roads State Specification for Concrete Construction ASTM C-33 Size #57 in lieu of ASTM C-33 Size #6 for the Coarse Aggregate 44 Concrete Please confirm that, "Ironworker, Structural" is the labor classification to use for the handling and placement of concrete reinforcing steel and welded wire fabric 45 Concrete Reference Concrete Specifications under paragraph 3.10 Finishing Formed Surfaces. Paragraph C for Rubbed Finish indicated that a rubbed finish is required where indicated. At what locations will the rubbed finish be required Precast Stadia 7 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 1 Precast 2 SS10.11 DLR / Mort Double rise is the typical section. Stadia In reference to the plans, Sheet SS10.11 illustrates the typical precast stadia section with a double rise then on Sheet SS10.12 a triple rise is Provide single rise as an alternate if desired. shown. Can you confirm if the double rise is the standard section? Also, is a single rise section an acceptable option? 2 Precast 2 Referencing details 15, 35 and 43 / AB7.1, is it the intent for the wall and DLR DLR response: Precast Stadia slab sections of the ADA seating and camera platforms to be CIP or See question and response in the concrete section precast? above for additional information. 3 Precast 2 Please advise on the specified caulk joint size and material? Mort Stadia 4 Precast 3 Are the scaled dimensions of the precast columns minimum as required Mort Price columns as per the drawings. Stadia by architect or is section size as required by precaster. 5 Precast 3 Addendum #2 states all vomitory stairs are to be metal pan units and all Mort Vomitory stairs shown on AB8.1 should be considered Stadia bowl stairs are to be cast in place. Are the stairs in the LOGE Box cast precast stairs. Detail 52/AB8.1 should consist of a in place or precast? If they are cast in place, does that eliminate stair precast "tub" with CIP steps and high load insulation to units from the precast scope of work? fill the void. CIP steps and insulation should be included with concrete scope. 6 Precast 3 Please confirm all drawing sheets showing the Parking Garage Mort All exterior precast and any precast shown in the garage Stadia and exterior precast are for reference only, and those areas are should not be included with this proposal package. not included in the current scope of work 7 Precast 3 Is only the top surface of the precast required to be sealed, or is Mort Top side of precast and all exposed walls are to be Stadia the underside of the riser required to be sealed also? Are the sealed by precast Subcontractor. vertical walls also required to be sealed? If yes, one or both sides? 8 Precast 4 Are the VOM Walls intended to be hung from the riser sections as DLR / Buro Stadia shown on the Architectural drawings, or are they to be supported by the structure as noted in the Structural Notes. Supported by the structure would be preferable to allow for the support of the precast riser sections 9 Precast 4 The CIP beam at Grid F at Top of Seating is shown conflicting DLR / Buro Stadia with the location of the precast riser on the Architectural Drawings, but is shown below the riser on the Structural Drawings. Please confirm the Structural Drawings show correct elevation of the beam. 10 Precast 4 Is there a fire rating required for the riser sections, or any DLR Stadia requirement for smoke or fire barrier? If yes, please indicate areas that will require fire stopping materials and/or fire caulk. 11 Precast 4 The Structural Notes and Specifications state 2” of clear zone is DLR / Buro Stadia required at the face of the precast risers, but the drawings show 3”. Please confirm 2” is the requirement. 8 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 12 Precast 4 Is the 4” radius shown at the edge of the precast riser on the DLR / Buro Stadia structural drawings required, or can the detail be changed to a ½” or ¾” chamfer? 13 Precast 4 Is the 8” minimum dimension shown on the structural precast DLR / Buro Stadia detail 1/ SS10.11 required, or is it allowed to be determined by the precast manufacturer? 6” is a typical dimension for that section 14 Precast 4 Can the requirement for sandblasting the ends of the risers be DLR Stadia removed? This is not a typical requirement 15 Precast 4 Is there a detail for the railing attachment to precast, or can it be Mort Depending on location, precast Proposer should rely on Stadia assumed that all railings will be attached with field installed their experience. Example, glass rails will require an anchors or core drilled and grouted embed plate, vom walls will be bolted or cored. Any railing attached to front or end of precast will require a halfen embed. Precast Subcontractor will need to coordinate all railing attachments. 16 Precast 4 Reference Scope of Work - Item K. Is this required of the Mort Stadia fabricator, or as a supplier can personnel be accessible to travel to the site if needed during precast erection 17 Precast 4 Reference Scope of Work - Item L. Can the engineer inspecting Mort The 2 week inspection should be done by someone Stadia the precast installation, be any qualified precast engineer, or does acceptable to the Engineer of Record. In addition all the actual designer / detailer need to be the engineer inspecting initial inspections to be done by both parties to establish level of quality. 18 Precast 4 Reference Scope of Work - Item M. Is the fabricator required to Mort Yes, sealing contractor can wash / clean the precast. Stadia completely wash the precast after it is erected, or can the sealing contractor wash it before the second coat of sealer is applied Steel 1 4 Please provide location and list of drawings where the Canopies are Mort See Proposal Form for allowance quantity. Steel located. If no framing is shown please provide tonnage 2 4 Secondary Steel: curtain wall support. Please provide location and list Mort See Proposal Form for allowance quantity. of drawings where this material is located. If no framing is shown please Steel provide tonnage 3 4 On drawing SS0.2 you have some notes in the bottom right hand corner Mort that list different allowances. Please clarify which of these items you Steel want us to include as allowances in our bid proposal 4 Steel 4 In the project specifications under Section 3c – Structural Steel Scope of Mort Work Outline, there are a number of items listed that are not shown on the structural set. For example, Items F, G, I & J are not located on the structural dwgs and have not weight associated with them for pricing 9 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response Metal Panels 1 Metal 2 Specification 074213 and 074215, on radius vertical wall substrates; are DLR Type 1 Panel (074213) is rainscreen which does not panels the panels to be radius or segment? typically occur at a radiused wall. The exception is at canopy projections which will be faceted. Type 2 (074214) are radius flatlock panels. 2 Metal 2 Please identify panel width and height dimensions for specification DLR The Type 3 panel (074215) has been eliminated from the panels 074213, 074214, and 074215. design. We are considering a louver system to replace the Type 3 panel. Type 1 panel is nominal 3' H x 6' L and the zinc flatlock panel is nominal 1'-4" H x 6' L. 3 Metal 2 Please identify location of insulation; in the stud cavity or out board of DLR / Mort Insulation will be outboard of stud face with additional panels the air barrier membrane. If the insulation is out board, is to be included insulation within the stud cavity. It shall be included in in this scope of work? If so, please provide a specification for semi-rigid this scope. Continuous insulation installed between Z- insulation, i.e. Thermafiber Rainbarrier. furring strips shall be ThermaFiber RainBarrier 30-2" thickness, Unfaced. 4 Metal 2 Please identify if there are any column or beam wrap enclosures and DLR This has not been finalized. The intent is for concrete panels what material they are to be. columns to be left exposed. Steel columns if exposed to view will be coated with intumescent paint or sprayed fireproofing with gyp. cover. 5 Metal 2 Systems descriptions page 2, Pressure Equalized Rainscreen Cement Mort Cement Composite Panels are no longer part of the panels Composite Wall Panel System – Please identify the scope of work this design. should be included under, if at all. 6 Metal 2 Please advise if final cleaning of materials at turnover of building to DLR General cleaning is the responsibility of each panels owner is required by these scopes of work? Subcontractor. Final cleaning will be performed by Others for windows. 7 Metal 2 Metal panel specification 074215 – indicates a zinc concealed fastener DLR Type 3 Panel (074215) has been deleted from the panels roll formed panel, Metafor, by VM Zinc with 120” w X 12” h dimensions. design. A louver type system is being considered at the However, the elevations show a similar zinc panel system aesthetically top of the stair tower mechanical rooms to replace this to the specified 074213 flat aluminum plate panel. Please advise which panel type. is to be utilized 8 Metal 2 The aluminum plate panel specification 074213, does not specify DLR panels deflection criteria, please advise 9 Metal 2 Per specification 074213, it appears the panel thickness requirement is DLR panels 0.080” per 074213-4, 2.1. A. Contrary to that reference 074213-5, 2.4, A., 2., notes that the thickness shall be determined by Dri-Design manufacturing parameters. Please advise which thickness governs and if Dri-Design manufacturing parameters governs, what is that thickness? 10 Metal 2 Please identify the scope of the architectural aluminum louvers and Mort panels provide a specification or product guide. 11 Metal panels 10 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 12 Metal panels Curtainwall 1 Curtainwall 2 Aluminum Entrance hardware to be included in this scope of work? If so DLR / Mort Mortenson to advise regarding hardware allowance as please provide a hardware schedule or specify an allowance to be the hardware schedules have not been completed at this carried per entrance leaf time. Mort response: Provide unit price allowance in your proposal. Include dollars for all hardware for this scope. 2 Curtainwall 2 There is a glass low E reference of Solar Ban 70 XL, on clear and/ or DLR See Glazing Specification-Section 088000. The combination of solexia, solar green and solar bronze tints. Please curtainwall glazing specification is based on “PPG provide a glass specification including glass make ups and glazing SOLARBAN 70XL Solar Control Low-E glass”. This schedule. product in “CLEAR” (no tint) meets the solar heat gain criteria that the HVAC system design is based on. As the glazing design develops, we will be analyzing interior glare and aesthetic considerations that may result in the use of a single tint (or clear) or a combination of tints on the project. The combination of tints could include “SOLEXIA”, “SOLARGRAY” and/or “SOLARBRONZE” along with “CLEAR”. 3 Curtainwall 2 There is a glass low E reference of Solar Ban 70 XL, there are DLR The additional manufacturers listed are acceptable comparable products by Guardian, Viracon and Cardinal. Please advise provided they meet the performance requirements as if alternative low E manufacturers are acceptable if they meet the specified. performance requirements. 4 Curtainwall 2 Please advise exterior aluminum entrance glazing is to be the same DLR Entrances within curtain wall framing shall be part of make up as the exterior curtainwall glazing. curtain wall system. Interior vestibules shall be Aluminum Storefront framing. Glazing within exterior entrances shall match glazing of curtainwall system. 5 Curtainwall 2 Please advise the glass make up for interior vestibule and entrance DLR Interior glass at vestibules shall be clear glazing without glazing. Low E coating and non-insulating. 6 Curtainwall 2 Systems descriptions page 3, Glass Aluminum Curtainwall, Material DLR / Mort Intent is that the manufacturer's standard thermally note “thermally broken”; Please advise if: 1) iso bars (polyamide nylon) broken design, which may or may not include ISO bars, are to be utilized as the thermal break 2) or if a standard thermal isolator can be used provided the specified performance between the pressure plate and mullion stem is acceptable requirements are met. 7 Curtainwall 2 Please advise if the proposal requires thermal models of the glazing DLR Mortenson to advise. system to show that the system proposed meets the thermal requirements of the specification. 8 Curtainwall 2 Automatic operators are required to be included with this scope of work. DLR At this time, include 6 door locations (12 operators total) Please provide a door schedule or advise quantity to be included. to have automatic operators. Intent is for one leaf of a pair of doors and both the exterior and interior vestibule door will have an operator. 11 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 9 Curtainwall 2 Firesafing and smoke seal between the slab edge and the back of DLR Reference Section 088000 for glazing specifications. curtainwall is to be provided with this scope of work. Please reference Section 4/AX7.2 is cut through the landing at the section4/AX7.2, the slab edge is in the middle of a glass lite. Please southeast stair tower (northeast stair tower is same) at advise on the following requirements: 1) spandrel glass make up 2) the corner curtainwall window. Where slab edge extends galvanized steel or painted aluminum back pans 3) reinforcing to curtainwall, spandrel glass will be required but no fire requirements of the galvanized steel/aluminum back pan to meet local containment system is required at the stair tower building codes 4) mineral wool insulation thickness i.e. Thermafiber landings. The exception is the floor at the "Top of firespan 90 4” 5) provide dimension between edge of slab to back of Seating" level which will require a fire containment system 6) Is the slab edge/curtainwall gap closure to protect the system of 2 hours. Thermafiber FireSpan system by firesafing and smoke seal to be included in this scope of work 7) are USG or equivalent is acceptable. It is our understanding there any local code requirements for insulting the back of curtainwall that the curtainwall provider be responsible for providing system below the slab edge in addition to the galvanized/aluminum back and installing the containment system but this must be pan and insulation. confirmed with the CM. Closure to protect system shall be metal studs and gypsum board. 10 Curtainwall 2 Please provide a firesafing and smoke seal specification. DLR / Buro See Above 11 Curtainwall 2 Please advise vertical and horizontal mullion spacing dimensions, i.e. Mort Final mullion configuration is not complete at this time. vertical mullions are spaced 10’, o.c. and horizontal mullions are spaced Use mullion pattern as indicated on drawings. 4’0” o.c. 12 Curtainwall 2 Please clarify the extent of interior glass and glazing scope of work. Is DLR Interior glass/glazing should not be included. All this limited to vestibule framing/glazing and vestibule entrances? Please vestibule glazing is to be included with this scope. advise. 13 Curtainwall 2 Please clarify if the curtainwall system is vertically captured or DLR Vertically captured and not structurally glazed. structurally glazed. 14 Curtainwall 2 Please confirm the horizontal mullions are captured with standard ¾” DLR / Buro All horizontal mullions will be horizontally captured. caps and extended 8” to 10” caps as indicated on the documents. Some will be captured with the standard 3/4" caps and some with the extended caps. Extended caps to exterior side shall be 10". 15 Curtainwall 2 Please advise if the wind load girts shown in the documents are DLR / Buro Intent is that the large curtainwall elements will be designed to accept curtainwall system dead load. If not, is the sill supported by the building super structure/secondary condition designed to accept the dead load of the curtainwall system. steel structure for lateral loads only. Curtianwall system shall be designed to support the gravity loading within the system. Exception are the corner windows at the southeast and northeast stair towers. These windows will be fully supported by the building superstructure for gravity and lateral loads. Coordination will be required for the load from the curtain wall to the nearest structure. Different conditions may apply at different locations. The sill condition of the building at the curtainwalls will be designed to support the curtainwall dead load whereever curtainwall occurs. 12 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 16 Curtainwall 2 Are the structural studs designed to accept the curtainwall loading DLR / Buro Intent is that the large curtainwall elements will be imposed or should the curtainwall be designed to load to the closest supported by the building super structure/secondary adjacent structure (underside of slab or nearest structure available). steel structure for lateral loads only. Curtianwall system Reference details 1 and 3/AX7.0. shall be designed to support the gravity loading within the system. Exception are the corner windows at the southeast and northeast stair towers. These windows will be fully supported by the building superstructure for gravity and lateral loads. Coordination will be required for the load from the curtain wall to the nearest structure. Different conditions may apply at different locations. 17 Curtainwall 2 Section 3/AX7.0, will the curtainwall be required to anchor back to the DLR / Buro Intent is that the large curtainwall elements will be structural W shape (approx. 90” from back of mullion) or will the studs supported by the building super structure/secondary shown accept all loads imposed? steel structure for lateral loads only. Curtianwall system shall be designed to support the gravity loading within the system. Exception are the corner windows at the southeast and northeast stair towers. These windows will be fully supported by the building superstructure for gravity and lateral loads. Coordination will be required for the load from the curtain wall to the nearest structure. Different conditions may apply at different locations. 18 Curtainwall 2 Section 1/AX7.0, will there be a curb to accept the sill of the curtainwall DLR Yes. at elevation +28’0”? 19 Curtainwall 2 Section 1 & 4/AX7.2 and 4/AX7.3, it appears that structure is penetrating DLR No structure will be penetrating the curtainwall. This is a the exterior curtainwall envelope. Please advise what is occurring drawing error. through this section. 20 Curtainwall 2 Are restroom mirrors to be included in this scope of work? If so, what Mort No. Restroom mirrors should not to be included with the size are they and are they unframed? glass/curtainwall scope. 21 Curtainwall 2 Under specific inclusions item L), please identify the location(s) and DLR / Mort Exclude "glazed-in" metal panels. panel specification. 22 Curtainwall 2 Please advise if independent laboratory test mock up(s) are required If DLR Not required. so, please provide mock up material scope and testing procedure. 23 Curtainwall 2 Exterior glass product has been defined, color of glass has not please Mort The glass color design is still being developed at this clarify time. See earlier question. 24 Curtainwall 2 Automatic door operators are shown in scope but not on drawings will DLR Yes, see response above. they be part of bid? 25 Curtainwall 2 Door hardware is shown in scope but not in specs or drawings, will they DLR Door hardware schedules have not been developed at be part of bid? this time. Include unit price allowance. 26 Curtainwall 2 What supersedes floor plan or elevations for determining division of DLR Elevations. glass frames vertically? 13 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 27 Curtainwall 2 There appears to be a decent sized curtainwall window shown on South DLR This window has been deleted from the design. Elevation 3/AX5.0 at gridline C behind the parking garage. It is also shown on West Elevation 2/AX5.1 between grids F-TT. Is this curtainwall part of the scope of our work or is this to be included in a future package with the parking garage? 28 Curtainwall 2 Interior vestibule doors and frames. Are these to be included in the Mort Vestibule doors frames and glazing are to be included Exterior Glass Curtainwall scope or will this be let with a future interior with this scope. Other interior glazing should be package? If they are included in this scope, should they all be figured as excluded. 12' tall per Wall Section 4, 1/AX7.1? 29 Curtainwall 2 Numerous cut-section details appear to show an extended face cap [ex: DLR Caps shall be 10" deep and shall replace the standard 1/AX7.0, 1/AX7.1, 2/AX7.3]. Is there a certain design element required 3/4" face cap. for these? Are they supposed to be a certain dimension or shape? 30 Curtainwall 2 Please review west elevation between column lines 9 and 10 typ. DLR These windows would be flush with the exterior wall and Windows appear to be bump outs on elevation ,but show as straight on not bump out. plan 31 Curtainwall 2 After review of the 3e proposal breakdown and the plans, please confirm Mort Each Proposer is responsible for verifying quantities the aluminum entrance quantity for all bidders. We find the following: 21 shown on the documents and should include all Exterior Pair, 2 Exterior Single, 14 Interior Pair, 1 Interior Single entrances shown on the drawings. Elevators 1 Elevator 2 The architectural and VT plans show elevator #8, but the specificaitons DLR Yes. Specifications will be revised to include this do not reference this unit. Are we to include pricing for this unit? Are we elevator. to assume similar specification requirements are units 3-7? 2 Elevator 2 Can you clarify the location of the control rooms for units 4-8? DLR Elevators 4-5 have control room adjacent to Elevator 5 at Event Level. Elevators 6-7 have control room at Grid Lines 1.6, J.9 on Event Level. Elevator 8 has control room adjacent to control room for Elevators 6-7 on Event Level. LB: Janet Hudgins 3 Elevator 2 The specification is calling for Class C1 loading on the 5000 lbs. service DLR Both the freight elevator and the 5000# service elevator elevator. A typical service car would have Class A loading. Class C1 will be carrying concentrated loads including pallets, loading is generally used for carrying a fork lift or where a single item possibly a fork lift and heavy equipment. The 'C' class being transported on the elevator is greater than 25% of the rated loading is required for concentrated loading. LB: Janet capacity (1,250 lbs.). There are significant cost savings if Class A Hudgins loading is used in lieu of Class C1. 4 Elevator 2 The VT series drawings indicate seven elevators, the AN series DLR The VT drawings do have eight elevators. Eight drawings indicate eight elevators. Which quantity is correct elevators is correct. 5 Elevator 3 The elevator names between the VT and AN series do not match. The VT drawings dated 05/16/2011 have elevator names Please indicate which VT drawing represents which elevator location that match the AN drawing series. based on AN series naming 14 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response Plumbing & Mechanical Systems 1 Mech / 2 Is the Plumbing scope to include the site utilities? The Plumbing System Mort Include all utilities to 5' outside of bulding. Plumbing Descriptions, page 6, items 6 & 7 indicate to include service tap fees for water, sanitary sewer and storm sewer which are usually included in the Site Utility package. 2 Mech / 2 When will DEC deliver hot water to the site? Mort The DEC Delivers hot water in November 2012. This is Plumbing to be used for temp heat in the building. 3 Mech / 2 The Test and Balance specification – 230593 states that this scope of DLR Test and balance is to be part of the mechanical Plumbing work will be directly subcontracted to Mortenson. The Mechanical / proposal. Plumbing breakdown issued in Addendum 1 has a breakout for Test and Balance. Please advise is this should be in our number or subcontracted to you. 4 Mech / 2 Are beer line conduits going to be run from the beer pump rooms to all DLR This hasn't been finalized. Assume at this time that there Plumbing concession stands and bar areas? will be beer lines to all concession stands and bar areas. 5 Mech / 2 Are soda line conduits required from a central point to all concession DLR This hasn't been finalized but assume that concessions Plumbing stands or does each concession area have its own soda distribution and bars will have their own soda distributiion. 6 Mech / 2 Can you provide a narrative or drawing on the scope of the beer and DLR Since the design has not been finalized at this time this Plumbing soda conduits? information is not available. 7 Mech / 2 Are there specific locations where heat tracing on pipe will be necessary DLR / M-E Plumbing on hydronic or plumbing piping? If so, can you advise where. Also, if there is heat tracing, will the complete scope of that work be part of the Mechanical / Plumbing proposal or Electrical proposal 8 Mech / 3 The specifications reference underground hydronic piping. I don’t see DLR / M-E Plumbing where this would be located. If underground piping will be required, can you advise where? 9 Mech / 3 Drawing M1.4 indicates air handler zones as AHU 1-6 and 2-3 but these DLR / M-E Plumbing are not included in the equipment schedule. Can you provide any information on the air handlers and where they are located for these zones? 10 Mech / 3 Mechanical Clarify if the "Food Service Matrix" & "Plumbing Fixture/Drain Quantity DLR / M-E Plumbing Pricing File Matrix", issued on March 16th, is applicable to this RFP, or if a revised matrix will be issued. 11 Mech / 3 M6.3 Clarify locations and capacity for "Superheat" fan coil units required for DLR / M-E Plumbing uniform drying sequence of operations. 12 Mech / 3 MEP0.1 Clarify if the 4-pipe fan coil units scheduled for the event level main DLR / M-E Plumbing electrical rooms also serve the event level COMM Rooms illustrated on the ES drawings, or if additional fan coils are required for the COMM rooms. 15 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 13 Mech / 3 M1.2 Unit heaters 2C01 and 2D01 are scheduled, but not located on the DLR / M-E Plumbing plans. Is the intent for these to be located in the respective quad mech mezz rooms? 14 Mech / 3 23 00 00, 3.3 Does each Suite require a 4-pipe fan coil unit in addition to the exhaust Mort No Plumbing illustrated on M1.4? 15 Mech / 3 23 00 00, 3.3 Does the Main Mechanical room on the event level require a 4-pipe air DLR / M-E Plumbing handling unit for space conditioning, or are the (2) 4-pipe fan coil units scheduled on MEP0.1 all that is required? 16 Mech / 3 23 00 00, 3.3 Clarify location of Stairwell wall-mounted DX split system Fan Coil Units DLR / M-E Plumbing and associated condensing locations and capacities. 17 Mech / 3 23 00 00, 3.3 Other than the fan coils scheduled on MEP0.1, clarify a quantity and DLR / M-E Plumbing capacity of 4-pipe fan coil units required for "Miscellaneous Areas" listed such as First Aid, Pantries, and Trash. 18 Mech / 3 23 00 00, 3.3 Other than the hot-water Unit Heaters and Cabinet Unit Heaters DLR / M-E Plumbing scheduled on MEP0.2, clarify a quantity and capacity of hot-water heaters required in spaces along the perimeter wall that do not require cooling. 19 Mech / 3 23 00 00, 3.3 Clarify location of areas with Air-cooled condensing units that require DLR / M-E Plumbing ventilation. 20 Mech / 3 23 00 00, 3.3 Clarify locations where transformers may be located in internal vaults, DLR / M-E Plumbing which require ventilation, along with exhaust fan capacity. 21 Mech / 3 23 00 00, 3.4 & Provide location for DX condensing unit serving fan coil in the DLR / M-E Plumbing Sheet M0.2 Scoreboard control room. 22 Mech / 3 23 00 00, 3.4 Clarify location of press areas with rack systems requiring DX fan coil DLR / M-E Plumbing units, along with locations and capacities for the associated condensing units. 23 Mech / 3 23 00 00, 3.4 Clarify location of server rooms requiring (2)DX fan coil units each, along DLR / M-E Plumbing with locations for the associated condensing units. 24 Mech / 3 23 00 00, 3.4 Clarify if the elevator machine rooms requiring DX fan coils are located DLR / M-E Plumbing at the event level, along with locations for the associated condensing units. 25 Mech / 3 23 00 00, 3.4 & Clarify if the 4-pipe fan coil units scheduled for areas requiring DX fan DLR / M-E Plumbing Sheet MEP0.1 coil units are redundant, or if the DX fan coil units take the place of the 4- pipe fcu's. These areas include Security Command & Scoreboard Control. 26 Mech / 3 23 00 00, 7.2 Clarify locations and capacity for Fan Powered Boxes. DLR / M-E Plumbing 27 Mech / 3 23 05 21, 1.1 Are LEED references to VOC's applicable to this project. Mort No, not at this time. Plumbing 28 Mech / 3 23 05 21, 2.2 Are there limitations on allowable sizes for grooved pipe coupling DLR / M-E Plumbing systems? 29 Mech / 3 23 02 03, 3.8 Are drip pans (insulated or uninsulated) required for branch piping to fan DLR / M-E Plumbing coil units serving electrical and comm rooms? 16 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 30 Mech / 3 23 02 03, 3.8 Are drip pans (insulated or uninsulated) required for piping mains DLR / M-E Plumbing illustrated on MP1.1 as crossing above main electrical rooms? 31 Mech / 3 23 73 24 Does the Split System DX air handling units spec apply to DX fan coil DLR / M-E Plumbing units reference in 23 00 00? 32 Mech / 3 23 75 00 Is the "Outdoor air handling units with coils" apply to any equipment DLR / M-E Plumbing relative to this project? 33 Mech / 3 23 84 13 Does the humidifier require a squelch station prior to draining to DLR / M-E Plumbing sanitary? 34 Mech / 3 23 00 00, 2.2 Clarify what quantity and type of utilities will be metered for areas DLR / M-E Plumbing designated for the sole use of the University of Nebraska 35 Mech / 3 23 26 00 Clarify where btu metering stations are required. DLR / M-E Plumbing 36 Mech / 4 23 73 21, 1.6 The specification for custom AHU's states that All AHU manufacturers DLR / M-E Plumbing shall deliver specific selection data to the bid examiner. Will this specific information be required at the designer assist contractor selection stage, or later in the design phase? Electrical Systems 1 Electrical 2 The site drawings show pad mount transformers at two locations, DLR Site plan is incorrect. One-lines issued shall supercede. however the narrative and one-line diagram indicates one line up of Medium voltage switchgear will be located in same medium voltage switchgear. Which is correct? Which location is for the vicinity as North West Generator. medium voltage switchgear 2 Electrical 2 Are there any motorized follow on spot lights required? DLR WJHW to address 3 Electrical 2 Are there any strobe lights required? DLR WJHW to address 4 Electrical 2 Are there any theatrical or DMX lighting control interface required? Will DLR WJHW to address there be any soundinterface for theatrical lighting? 5 Electrical 2 Several key notes are shown on the one-line diagrams but are not DLR / Mort Keynotes missing are as follows: [#6 - Provide Shunt clarified in the notes column. Are they detailed or listed in a different Trip Breaker with input from Fire Alarm system to shunt location? upon activation of the Fire Alarm System.] [#7 - Provide a Lutron Grafik Eye Dimming Panel (GP-48-ML/MB-20- GRXAV)]. [#19 - Provide pushbutton EPO clearly labeled and located in Fire Command Center to de-energize unit substation.] [Keynote #1 on sheets E0.11 thru E0.17 should be revised to: Provide (48) pole lighting control relay panel].[Keynote #3 on sheets E0.11 thru E0.17 should be revised to:Connect main electrical room ground bus to main service switchboards with a 4/0 copper conductor in a 1" conduit.] 6 Electrical 2 Are there any CAD or Revit backgrounds available for layout of sports DLR Final catwalk layouts and configurations have not been lighting and other systems? Documents list a quantity of fixtures, 100% finalized. Manufacturers are required to bid however we would like to see if there would be a different pricing related quantities listed in narrative at this time. to the approach by the manufacturers. 17 of 18 6/13/2011 4:51 PM NOTE: All proposers are responsible for reading all questions/answers. Question # Section RFC Reference Question / Clarification Responder Response 7 Electrical 2 Is there any code sheets available or a listing of square footage and any DLR Preliminary code information is available. Mortenson area separations? should be able to supply this. 8 Electrical 2 Is the scoreboard going to be supplied with conduit and wiring Mort Electrical drawings will provide a single point connection complete? to scoreboard. No other conduit or wiring will be shown downstream of that on the electrical drawings. 9 Electrical 3 I would like to confirm my interpretation of the electrical scope DLR document that we are to assume the use of Mortenson provided temporary distribution equipment, including PDU’s, cords and turtle 10 Electrical 3 Where will the power amplifiers be located for the sound reinforcement DLR / WJHW system? The control room located on the upper concourse area C is not large enough and the fan noise will be disruptive. We suggest that they be located on an accessible structure in the catwalk. 11 Electrical 4 A generator manufacturer asked about our requirement for a weather- M-E We have a line item in our specifications stating 4'-0" proof enclosure for the generators. minimum clearances are needed on each side. This item is for a custom, walk-in enclosure and will not be required on the project. We are intending to have a standard, sound-attenuated, weather-proof housing supplied from the manufacturer. No lights, outlets, etc. are required in the enclosure. Low Voltage 1 Low Voltage 2 Are there any Broadcast Cable Schedules available? DLR Yes, see schedules issued in Addendum #1. 2 Low Voltage 2 WJHW drawings there is not a legend for the symbols on the drawings. DLR See attached drawing ES0.00 Could a legend be issued? 3 Low Voltage 2 The CATV riser is discussed in the specifications but not included in the DLR drawings. Is there a schematic of the riser? 4 Low Voltage 2 Should the speaker hoist be a breakout cost on the proposal? Mort Yes, see revised Low Voltage proposal form. 18 of 18 6/13/2011 4:51 PM LINCOLN HAYMARKET ARENA 10-10124-00 LINCOLN, NEBRASKA BID PACKAGE _1_ SECTION 312000 - EARTH MOVING - CIVIL PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Excavating and backfilling for utility trenches. 1.2 DEFINITIONS A. Backfill: Soil material used to fill an excavation. 1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe. 2. Final Backfill: Backfill placed over initial backfill to fill a trench. B. Bedding Course: Aggregate layer placed over the excavated subgrade in a trench before laying pipe. C. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill. D. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated. 1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by Engineer. Authorized additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work. 2. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions without direction by Engineer. Unauthorized excavation, as well as remedial work directed by Engineer, shall be without additional compensation. E. Fill: Soil materials used to raise existing grades. F. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface. G. Subgrade: Uppermost surface of an excavation or the top surface of a fill or backfill immediately below subbase, drainage fill, drainage course, or topsoil materials. H. Utilities: On-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings. EARTH MOVING - CIVIL 312000 - 1 LINCOLN HAYMARKET ARENA 10-10124-00 LINCOLN, NEBRASKA BID PACKAGE _1_ 1.3 QUALITY ASSURANCE A. Preexcavation Conference: Conduct conference at Project site. 1.4 PROJECT CONDITIONS A. Utility Locator Service: Notify utility locator service for area where Project is located before beginning earth moving operations. PART 2 - PRODUCTS 2.1 SOIL MATERIALS A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations. B. Satisfactory Soils: To be determined by Geotechnical Engineer. C. Unsatisfactory Soils: To be determined by Geotechnical Engineer. 1. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction. D. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least 90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a No. 200 sieve. E. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; except with 100 percent passing a 1-inch sieve and not more than 8 percent passing a No. 200 sieve. 2.2 ACCESSORIES A. Detectable Warning Tape: Acid- and alkali-resistant, polyethylene film warning tape manufactured for marking and identifying underground utilities, a minimum of 6 inches wide and 4 mils thick, continuously inscribed with a description of the utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 30 inches deep; colored to comply with local practice or requirements of authorities having jurisdiction. EARTH MOVING - CIVIL 312000 - 2 LINCOLN HAYMARKET ARENA 10-10124-00 LINCOLN, NEBRASKA BID PACKAGE _1_ PART 3 - EXECUTION 3.1 PREPARATION A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth moving operations. B. Protect and maintain erosion and sedimentation controls during earth moving operations. C. Protect subgrades and foundation soils from freezing temperatures and frost. Remove temporary protection before placing subsequent materials. 3.2 EXCAVATION, GENERAL A. Unclassified Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions. 1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials. 3.3 EXCAVATION FOR STRUCTURES A. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 1 inch. If applicable, extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections. 3.4 EXCAVATION FOR UTILITY TRENCHES A. Excavate trenches to indicated gradients, lines, depths, and elevations. B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to 12 inches higher than top of pipe or conduit unless otherwise indicated. 1. Clearance: 12 inches each side of pipe or conduit. C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and sharp objects along trench subgrade. 1. Excavate trenches 6 inches deeper than elevation required in rock or other unyielding bearing material, 4 inches deeper elsewhere, to allow for bedding course. D. Trenches in Tree- and Plant-Protection Zones: EARTH MOVING - CIVIL 312000 - 3 LINCOLN HAYMARKET ARENA 10-10124-00 LINCOLN, NEBRASKA BID PACKAGE _1_ 1. Hand-excavate to indicated lines, cross sections, elevations, and subgrades. Use narrow- tine spading forks to comb soil and expose roots. Do not break, tear, or chop exposed roots. Do not use mechanical equipment that rips, tears, or pulls roots. 2. Do not cut main lateral roots or taproots; cut only smaller roots that interfere with installation of utilities. 3. Cut and protect roots according to requirements in Section 015639 "Temporary Tree and Plant Protection." 3.5 STORAGE OF SOIL MATERIALS A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing. Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust. 1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees. 3.6 UTILITY TRENCH BACKFILL A. Place backfill on subgrades free of mud, frost, snow, or ice. B. Place and compact bedding course on trench bottoms and where indicated. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. C. Trenches under Roadways: Provide 4-inch thick, concrete-base slab support for piping or conduit less than 30 inches below surface of roadways. After installing and testing, completely encase piping or conduit in a minimum of 4 inches of concrete before backfilling or placing roadway subbase course. D. Place and compact initial backfill of satisfactory soil, free of particles larger than 1 inch in any dimension, to a height of 12 inches over the pipe or conduit. 1. Carefully compact initial backfill under pipe haunches and compact evenly up on both sides and along the full length of piping or conduit to avoid damage or displacement of piping or conduit. Coordinate backfilling with utilities testing. E. Place and compact final backfill of satisfactory soil to final subgrade elevation. F. Install warning tape directly above utilities, 12 inches below finished grade, except 6 inches below subgrade under pavements and slabs. 3.7 SOIL FILL A. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material. B. Place and compact fill material in layers to required elevations as follows: EARTH MOVING - CIVIL 312000 - 4 LINCOLN HAYMARKET ARENA 10-10124-00 LINCOLN, NEBRASKA BID PACKAGE _1_ 1. Under grass and planted areas, use satisfactory soil material. 2. Under walks and pavements, use satisfactory soil material. 3. Under steps and ramps, use engineered fill. 4. Under building slabs, use engineered fill. 5. Under footings and foundations, use engineered fill. 3.8 SOIL MOISTURE CONTROL A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 2 percent of optimum moisture content. 1. Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain frost or ice. 2. Remove and replace, or scarify and air dry, otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight. 3.9 COMPACTION OF SOIL BACKFILLS AND FILLS A. Place backfill and fill soil materials in layers not more than 8 inches in loose depth for material compacted by heavy compaction equipment, and not more than 4 inches in loose depth for material compacted by hand-operated tampers. B. Place backfill and fill soil materials evenly on all sides of structures to required elevations, and uniformly along the full length of each structure. C. Compact soil materials to not less than the following percentages of maximum dry unit weight according to ASTM D 698: 1. For utility trenches, compact each layer of initial and final backfill soil material at 95 percent. 3.10 GRADING A. General: Uniformly grade areas to a smooth surface, free of irregular surface changes. Comply with compaction requirements and grade to cross sections, lines, and elevations indicated. B. Site Rough Grading: Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to required elevations within the following tolerances: 1. Turf or Unpaved Areas: Plus or minus 1 inch. 2. Walks: Plus or minus 1 inch. 3. Pavements: Plus or minus 1/2 inch. 3.11 FIELD QUALITY CONTROL A. Testing Agency: Owner will engage a qualified geotechnical engineering testing agency to perform tests and inspections. EARTH MOVING - CIVIL 312000 - 5 LINCOLN HAYMARKET ARENA 10-10124-00 LINCOLN, NEBRASKA BID PACKAGE _1_ B. Allow testing agency to inspect and test subgrades and each fill or backfill layer. Proceed with subsequent earth moving only after test results for previously completed work comply with requirements. C. When testing agency reports that subgrades, fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil materials to depth required; recompact and retest until specified compaction is obtained. 3.12 PROTECTION A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris. B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions. C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing. 1. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible. 3.13 DISPOSAL OF SURPLUS AND WASTE MATERIALS A. Remove surplus satisfactory soil and waste materials, including unsatisfactory soil, trash, and debris, and legally dispose of them off Owner's property. END OF SECTION 312000 EARTH MOVING - CIVIL 312000 - 6 Low Voltage Cost Breakdown Haymarket Arena Lincoln, Nebraska 6/17/2011 Contractor: Required Quantitative Cost $/sf Information Specialty Systems: quantity of drops, POS, and Tele / Data Cabling (Backbone and Horizontal) racks, quantity of doors controlled Access Control System (Equipment & Installation) and associated devices quantity of cameras and type Video Surveillance (Equipment & Installation) and associated devices quantity of bowl speakers and Audio /Sound System (Equipment & Installation) associated equipment Describe quantities of JBT's Broadcast Cabling System (Equipment & Installation) and conduits and cabling Distributed TV System (Equipment & Installation) quantity of drops and locations Speaker Hoist (Lump Sum) Other (Specify) Total Special Systems: Bond: Design Assist Services (Lump Sum) TOTAL LOW VOLTAGE : Note : All G.C., preconstruction, BIM, coordination, etc type items should be distributed and included within each of the appropriate line items above. Provide Audio Add Alternates as stand alone turn key installations: Hospitality Lounge: Rest Rooms on each level: Ticket Offices: Structural Steel Breakdown Haymarket Arena Lincoln, Nebraska 6/17/2011 Contractor: Quantity / Tons Unit Cost ($) Total Cost Structural Steel Items: Long-span Roof Primary Trusses Long-span Roof Secondary Trusses Long-span Roof Infill Framing Catwalk System Floor Framing & Columns Secondary Steel: curtainwall support, etc. See allowance below Steel Embeds Roof Deck Composite Deck Allowances: Include allowance of 27 tons for canopy steel framing Include allowance of 1,550 SF for canopy roof deck Include allowance of 119 tons for secondary support steel Erection Costs: Erection Subtotal Structural Steel Bond: Connection Design Design Assist Services (Lump Sum) TOTAL Proposal Amount : Note : All G.C., preconstruction, BIM, coordination, etc type items should be distributed and included within each of the appropriate line items above.
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