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					DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES 11/3/2009

DIVISION 11
EQUIPMENT

DIVISION 11 EQUIPMENT

Division 11 of the Carnegie Mellon University Design and Construction Standards Manual addresses the following standards related to equipment.
11014 11111 11130 11132 11150 WINDOW WASHING AND BUILDING FACADE MAINTENANCE COIN-OPERATED LAUNDRY EQUIPMENT AUDIO-VISUAL EQUIPMENT PROJECTION SCREENS AND MOTORIZED PROJECTION SCREENS PARKING CONTROL EQUIPMENT

DIVISION 11
EQUIPMENT

DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES

11014 WINDOW WASHING AND BUILDING FACADE MAINTENANCE
Anchors to support window cleaner personnel shall be specified with window installation, where required.

11111 COIN-OPERATED LAUNDRY EQUIPMENT
A standard laundry area shall include the following: • One washer/dryer set per 30 students • One sink • One soap dispenser • One bill changing machine • Two folding tables • Seating area Front-loading washers and dryers shall be provided that meet ADA guidelines. The University prefers stacking dryers to save space. Adequate exhaust/venting shall be provided for the equipment. The University prefers Maytag equipment. A certified Maytag repairman is located on the campus.

Equipment
The following equipment for laundry installations is preferred by the University: Washers: Dryers: Bill Changer: Maytag, Model MAF25MC Maytag, Model MDG32PC Rowe, Model BC-100

Soap Dispenser: Bend-Rite, Model 180

11130 AUDIO-VISUAL EQUIPMENT
A media assessment is required for the construction and/or renovation of instructional space. Carnegie Mellon’s Instructional Technology staff shall be involved in the planning, design, installation, and testing of projects that require media provisions. Generally, the media assessment will result in the installation for one of the following functional levels: A. Basic: Chalk/markerboards, screen, overhead projector B. Monitor Video: Basic plus the capability for video display from tape or laser disc via direct view monitor C. Projection Video/Data: Basic plus the capability for large-screen projection of video and computer output.
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DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES

DIVISION 11
EQUIPMENT

D. Advanced Technology Classroom (ATC): Comprehensive array of media devices, with user-operated control system for devices, lighting, screen, etc.

Room Environment
This section addresses spacing, lighting, sound, and other factors related to enhancing the learning environment in classrooms. Note that the letters in parentheses indicate an item’s applicability to the functional levels described above. Space Arrangement (A, B, C, D) Rooms shall accommodate access for wheeled equipment in compliance with ADA guidelines. A corridor without steps shall be provided between the rear and front of rooms. All doors shall be a minimum of 3 ft wide, and doors accessing corridors shall contain a small window. Seating shall be arranged with regard to viewing angles and distance between seating and visual aids as follows: • • The maximum width-to-depth room dimension ratio shall be 1:33. The viewing angle shall be a maximum of 50º measured from the perpendicular axis at the center of the screen.

The front open area depth shall be a minimum of 20% of the longest viewing distance for legibility of overhead transparency projections (with the projector at the front row of seats). For example, if the longest viewing distance is 50 ft, then 10 ft of open space is required at the front. Lighting (A, B, C, D) In addition to the lighting standards provided in this section, the requirements in Division 16, Section 16500 Lighting shall apply. Lighting shall be provided for the chalk/markerboard and for the open spaces for media levels A, B, C, and D. Over-seating lighting shall be coordinated with the video/data projector mounting location for C and D. Lighting during projections for C and D shall comply with the following: • • • • • Note taking shall have directed lighting (no spill onto screen). Lighting during projections shall be on a separate switch from general lighting. Lamp wattage shall be 0.5 fc at seats (2/1). If providing note-taking lighting is not feasible, general lighting circuits shall be split so that all but the rearmost fixtures can be switched off. Emergency lighting, as required by code, shall not interfere with video projections.

DIVISION 11
EQUIPMENT

DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES

Lighting during projections and simultaneous chalk/markerboard use for C and D shall comply with the following: • Chalk/markerboard shall have directed lighting (no spill onto screen). • Lighting shall be on a separate switch from general lighting. • Lighting shall be directed at the portion of chalk/markerboard not obscured by an offcenter screen. • Dimming capability is preferred. Lamp wattage of 20 fc shall be provided at the chalk/markerboard. Lighting Control Location (A, B, C, D) Controls for general (over-seating) lighting shall be placed at room entrances. All circuits shall be grouped together at the side of the chalk/markerboard nearest the instructor’s location. Listening systems for the hearing impaired must comply with ADA guidelines. These systems can be either audio loops or radio frequency types. Sound Location (A, B, C, D) A mechanism for speech reinforcement shall be provided for rooms with greater than 60 seats. All rooms with resident video equipment shall be provided with program audio. Both needs can be accomplished with the installation of one or two speakers mounted near the screen. “Distributed” systems are not advisable. Wireless microphones (diversity, hi-band, clip-on microphone with bodypack) shall be utilized for speech. Other wired-microphone inputs shall be provided as needed. Line-level inputs for program shall be provided as required. (This includes a spare input for portable equipment.) Input at the rear of the room may be required for a 16-mm film projector sound. Master volume and power must be user accessible. All other controls shall be accessible only for servicing. Window Treatment (C, D) Window treatment type shall be as near to totally light-excluding as possible. This shall be accomplished using: • Draperies (manual or motorized) • Rollerblinds (edges running in baffles, motorized or manually geared) The controls for window treatments shall be grouped with the general lighting controls. Power Outlets (A, B, C, D) All ac power outlets shall be double duplex outlets and shall be located on the front wall at left, center, and right. A double duplex outlet shall also be provided at the center of the rear wall.

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DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES

DIVISION 11
EQUIPMENT

Outside Communications (A, B, C, D) All outside communications shall be coordinated with University Telecommunications. Several outlets for accessing the campus data network shall be provided in the front of the room. The campus data network carries data for resident or portable computers used in instruction and telephone service for normal, emergency, and teleconferencing use.

Equipment Specification/Accommodation
Projection Screens (A, B, C, D) Refer to Section 11132 Projection Screens and Motorized Projection Screens for standards for projection screens. Chalk/Markerboards (A, B, C, D) In addition to the requirements in listed in Division 10, Section 10100 Visual Display Boards for chalk/markerboards, the following requirements shall be met. Multiple-panel, vertically-sliding chalk/markerboards shall be used wherever possible to maximize the writing surface area. If room width permits, additional fixed chalk/markerboards can flank the movable panel assembly. In rooms longer than 60 ft, chalk/markerboards can be difficult to read by students in the rear of the room. For legibility, 1 in. of character height is required for every 20 ft of viewing distance. As instructors typically write on chalk/markerboards using 3-in. characters, other technologies (video- or computer-based) shall be considered in such rooms.

Resident Media Equipment (A, B, C, D)
Video/Data Projectors/Monitors (B, C, D) For smaller classrooms/seminar rooms, direct-view, wall-mounted video monitors shall be considered. Monitors shall be 27-in. diagonal or greater. If ceiling height permits, monitors shall be center-mounted on the wall above the chalk/markerboard. Otherwise, they shall be mounted to one side of the chalk/markerboard. Monitors, which typically weigh around 100 lb, shall be mounted with an under-clearance of 7 ft. Power and signal cabling shall be the same as for projectors. The use of multiple monitors for larger rooms is not recommended as viewers can find identical multiple images distracting. Projectors shall be used instead. Monitors capable of displaying computer screens as well as video are available, but are heavy, large, and costly and, therefore, not recommended. Projectors The ceiling-mounted distance from the screen shall be typically two times the desired image width.

DIVISION 11
EQUIPMENT

DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES

Projectors shall be mounted at a height that is level with the top of the image, usually at the ceiling. The mounting shall be attached to a structure (projector weight is 50 lb). If the ceiling is greater than 12-ft high, a motorized, scissor-type platform lift mounted to a structure shall be considered, enabling the projector to be lowered for servicing or removal. A power supply shall be provided by an unswitched duplex outlet adjacent to the top of the mount and shall be a dedicated 20-amp, usage-protected type. Cables shall be provided from the projector to the computer connector panel in the front of the room. If conduit is used, 1.5-in. minimum shall be installed. The connector panel location shall be determined in each case, but typically, shall be near the light/screen controls or in a closet/cabinet. Cabling for resident video devices (VCR’s, laserdisk) shall be provided direct to devices housed in a closet/cabinet. Auxiliary input for portable equipment shall also be provided. Support platforms for rear-of-room projectors (slides, film) shall be provided on the rear wall and on the screen axis. The platform shall be 18 in. (w) x 30 in. (d) x 50 in. (h) and capable of supporting a 50-lb projector. An unswitched ac duplex outlet shall be provided near the platform.

Security (A, B, C, D)
A lockable storage closet shall be provided at the front of a room. The closet shall be at least 4 ft (d) x 6 ft (w) with a 3 ft door. Otherwise, a lockable metal storage cabinet measuring 4 ft-8 in. (h) x 2 ft-8 in. (w) x 1 ft-8 in. (d) shall be provided, typically in the front corner. Resident devices (VCRs, amplifiers, etc.) are typically located in a closet/cabinet that requires ac power and signal-cable routing to the storage unit. Equipment closets/cabinets shall be locked with keys. Security screws requiring special tools shall be provided for equipment in rack cabinets. Physical barriers to equipment removal shall be provided when equipment is not rackmounted. Electronic security, with or without a local siren, shall be provided. This requires a dedicated phone line. Controlled access to the room itself shall be provided, where feasible. Ceiling-mounted devices (projector, speakers, etc.) shall be included in security.

Advanced Technology Classroom (D)
Advanced Technology Classrooms are complex, requiring careful design and attention to detail, in the interests of reliability and functionality. Infrastructure planning is vital. Long lead times can be expected. ATCs are prototypical and evolutionary. Presentation technology is a rapidly advancing field, and as new devices and strategies mature, ATCs shall be modified to incorporate them, insofar as they can enhance teaching and learning.
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DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES

DIVISION 11
EQUIPMENT

An example of a future innovation might be room control via voice commands operating through a computer with speech-recognition capability. An ATC classroom represents the highest level of media technology in an instructional space. A full array of installed, resident source, and display devices for visual-, aural-, and computer-based presentation is required. Control System An integrated control system for the devices described above and for the room itself (lighting, screens, window coverings) is also required. The control system shall be microprocessor-based with: • • A user-friendly interface, typically an LCD or electro-luminescent touch screen, with “buttons” on “pages” arranged in logical menus Single-button command sequences, such as touching a “VCR” button to lower the screen, draw the window coverings, and condition the projector and the audio system or touching “PLAY” to dim the lights and start the VCR Statistic-gathering capability to monitor equipment use Communication with devices via RS232 protocol (with status feedback), or via contact closure. This requires careful equipment selection, including lighting and other room systems. Infrared communication shall be provided, if necessary.

• •

A presentation lectern shall be provided that contains the user interface for the control system, a video/data monitor, a VCR, a laserdisc, a computer keyboard and mouse, a microphone, and a reading light. Optional Features Optional features for ATCs include multimedia configuration (VCRs, etc. controlled by a resident computer) and video camera(s) for taping or video transmission to other sites via campus network, satellite, or compressed video on phone lines. Cameras may be remote controlled.

11132 PROJECTION SCREENS AND MOTORIZED PROJECTION SCREENS
Projection Height
The projection image height is 75% of image width. Room height must equal image height plus 3 ft so that the bottom of the image is not lower than the chalk/marker rail.

Front-Screen Projection
When vertical sliding-panel chalk/markerboards are specified, an alternative to specifying roll-up screens is to apply matt screen fabric to the wall behind the panels (revealed by lowering all panels). In this case, panel width must be greater than or equal to the required screen width. Also, the sliding structure must extend to the ceiling. Fabric with either self- or applied-adhesive shall be applied on walls that are absolutely smooth.

DIVISION 11
EQUIPMENT

DESIGN AND CONSTRUCTION STANDARDS
FACILITIES MANAGEMENT SERVICES

Rear-Screen Projection
If space is available, the projector may be located in the room behind the front wall so that the image is shone onto the back of a translucent screen fixed in the shared wall. The advantages of rear-screen projection are that the projector is removed from the main space ceiling and the lighting and window-coverings may be simplified. A possible disadvantage arises if the chalk/markerboard occupies the same wall space, unless the sliding boards can all be lowered to reveal the screen. The same image-size and projector-to-screen criteria listed above for front-screen projection applies to rear-screen projection, though projector-to-screen distance can be “folded” by using first-surface mirrors. Slide and film projectors can also rear-project. Overhead projectors require a front screen.

Additional Requirements
The projection screen width shall be greater than or equal to 30% of the longest viewing distance, plus 33% if dual slides are likely to be shown. Projection screens shall have a matt surface, not a beaded surface. Tensioned-fabric screens are preferred. Screens greater than or equal to 10 ft shall be motorized with low voltage control. Minimum screen size shall be 8 ft square with the exception of small seminar rooms, which may have 6 ft square screens. Primary screen access shall be on the center axis of the room. Secondary, smaller (width greater than or equal to 20% of longest viewing distance) screens for simultaneous use of overhead projector with chalk/markerboard shall be mounted off-center just behind or ahead of the primary screen. They may also be mounted across a front corner. Projection screen controls shall be located with lighting controls.

11150 PARKING CONTROL EQUIPMENT
The Design Consultant shall contact the University Parking Office to coordinate the current requirements for this section.

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