Shed specifications

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					                                GWYDIR LEARNING REGION
                            AUTOMOTIVE TRADE TRAINING CENTRE
                             APPENDIX B – SHED SPECIFICATIONS

Prepared by Bluescope Lysaght Technology

Shed Dimensions
Length - 36200mm Width - 21000mm Eave height - 4800mm

Wind Design
Region B
Terrain 2.5
Importance Level 2

All Designs must be Shed Safe Accredited

All Plans must be analysed in accordance with Codes of Practice
AS/NZS 1170.2, AS4100, AS2870 and AS/NZS 4600.

It is preferred that all steel used is made from BlueScope Steel or equivalent. Imported steel is
not the preferred steel to be used. All steel is to be stamped with the steel company’s name.

Roof Pitch
Roof pitch is to be 10 degrees.

Shed Structure
Main columns are to be no less than C300/30 back to back cold rolled C Section with 1800mm long

Main rafters are to be no less than C250/24 back to back cold rolled C Section with 1800mm long stiffeners

Roof and Wall Girts
Roof and wall girts must be no less than C150/15 Z or C Purlin bolted.

Hold down Bolts
Main column bolts must be 24mm Diameter x 450mm long , using no fewer than Four (4) for each column.

Securing columns
No columns are to be concreted into the ground.

Cladding and Roof Material
Colorbond cladding must be used with a thickness of no less than 0.42bmt on both roof and walls.
Roofing must be Trimdek or equivalent. Coloured screws must be used.
Guttering and Down Pipes
Guttering is to be Lysaght Sheerline or equivalent, and must be slotted.
Down Pipes should be 100mm x 75mm Colorbond or equivalent. They are to be supplied to ground level
and connected to a designated exit point.

Roller Doors
Roller Doors are to be B & D Series 2 Industrial with Wind locks fitted.
Grifco Motors (Single Phase) are to be fitted to 4125mm h x 4280mm w doors x 2
B & D Industrial Type motors are to be fitted to other two Roller Doors x 2.
All motors are to have Up and Down control boxes on the inside of the shed.

Insulation to be fitted to the roof must be Aircell Glare Shield Anti Glare. It must be lapped a minimum of
150mm and wire safety mesh fitted.

All materials and workmanship shall be in accordance with relevant and current SAA codes and with by-
laws and ordinances of the relevant building authorities except where varied by the project specification.
All dimensions shown should be verified by the builder on site.
During construction the structure shall be maintained in a stable condition and no part shall be
Temporary bracing shall be provided by the builder to keep the works and excavations stable at all times.
The structural components must be designed in accordance with the relevant SAA codes and normal
engineering practice.

Structural steel specification
All structural steelwork to be carried out in accordance with the latest editions of the following SAA codes
and specifications:
      AS 4100 steel structures code
      AS/NZS 4600 cold formed steel structures code.
      AS 1511 high strength structural bolting.
      AS 1111 commercial bolts and screws.
      AS 2887 farm structures (where applicable).
Proprietary products are to be in accordance with the respective manufacturer’s instructions.

High Strength Bolts
Connections with 8.8s bolts specified are designed as friction type joints. Bolts, nuts and washers shall
comply with the relevant requirements of AS 1252.
High strength friction grip bolts are to be installed in accordance with AS 1511 and tensioned by an
approved method to produce the following shank tensions.

Bolt Size Shank Tension (kN)
M12 50
M16 90
For this design an acceptable tensioning method is snug tight (podger spanner tight) plus half a turn.
Cold Formed Steel Framing
All structural steel framing to be manufactured from hot dip zinc coated steel conforming to AS 1397.
Unless Noted Otherwise, material grades shall be as follows:-
1.0 BMT - GRADE G550, Z350
1.2 BMT - GRADE G500, Z350
1.5 TO 3.0 BMT - GRADE G450, Z350

Frame Assembly
Correct frame assembly is important to achieve optimum performance of the structure.

Roof and Wall Cladding
Roof and wall cladding are to be installed in accordance with AS 156 and the manufacturer’s instructions
to the same wind load rating as the building structure.

Doors and Windows
Where building is designed as fully enclosed:-
    All walls are equally permeable with cpi = + 0.0 or - 0.3.
    All doors and windows are to have the same wind load rating as the structure.
    Doors and windows are to be kept closed when unattended and during storms.

Where building is designed as open, a dominant opening is assumed with Cpi = - 0.65 or + 0.7.

Design Loading
The structural components shown on these drawings have been designed for the following load conditions
in accordance with:
AS/NZS 1170.0, 1, 2, 3 - IMPORTANCE LEVEL 2

Internal pressure cpi +0.0 or -0.3 (enclosed)
Roof dead load - self weight only
Roof live load - (1.8/a+0.12) but not less than 0.25kpa and 1.1kn
Floor live load - light industrial

Occupational Health and Safety
Erection of metal buildings can be dangerous or hazardous.
Metal building erectors are responsible for their own and fellow workers’ on-site safety.
It is common sense to work safely and to protect yourself and others from accidents on site. To do this,
you must ensure you have in place safe work practices and appropriate equipment.
Safety involves:
      Personal protection:
              of eyes
              of skin(from sunburn)
              of hearing (from noise).
      Fall protection. Fall protection must also be in place as applicable including:
              safety mesh
              personal harnesses
              perimeter guardrails.
It is recommended that you familiarize yourself with applicable laws, regulations, rules, guidelines, codes
of practice and standards and that you adhere strictly to them.

Some DOs and DON’Ts
    Do have all electrical leads checked.
    Do use only approved ladders and/or scaffolding.
    Do wear protective clothing, eye, foot and head wear.
    Do read tool operating manuals before using power tools.
    Do secure the construction area to prevent unauthorised access.
    Do make sure you have adequate insurance to cover site accidents.
    Do not leave materials or tools in a location where they might cause someone an injury or be
      subject to blowing in the wind.

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