You are designinga new art gallery in the Blue Mountains. In keeping with the na

Question

You are designinga new art gallery in the Blue Mountains. In keeping with the natural surrounds, timber is heavily utilised as a structural material.

As shown in figure 3, the art gallery is to have

- A timber floor which is supported by 12 bearers (beams) 295mmx80mm (depthxwidth)

- The bearers selected are of machine graded sawn, unseasoned Mountain Grey Gum (Strength group S3, Stress Grade F14)

- The bearers have a clear span of 4m and the ends of the bearers sit on 100mm wide supports.

- The compression flange of the bearers are restrained by joists at 450mm centers (Hint: Lay - 450mm

- The spacing between bearers is 2.5m

- The live load applied along the length of the bearer has been calculated to be 1.8N/m. The dead load applied along the length of the bearer, including self weight has been calculated to be is 1.5N/m

Check the adequacy of the bearers to the requirements of Australian Standards in relation to:

(a) bending strength

(b) shear strength

(c) bearing strength

(d) limiting deflection

Show all assumptions, formula, references and diagrams

Explanation / Answer

Please post the figure. I will see if i can help you

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