After consulting a span table you have worked out that you need 2/150x45 floor joists at 450mm centres for a floor construction.
What does 2/150x45 mean?

Question

After consulting a span table you have worked out that you need 2/150x45 floor joists at 450mm centres for a floor construction. 
 What does 2/150x45 mean?

Accepted Answer

Two joists next to each other are required 150mm high and 45mm wide

Answer

The cross section of both joists together needs to be 150mm high and 45mm wide

Answer

The cross section of both joists together needs to be 150mm wide and 45mm high

Answer

None of the above

Answer

Two joists next to each other are required 150mm wide and 45mm high

Crowdly

After consulting a span table you have worked out that you need 2/150x45 floor j...

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