Hi,
I need help solving an assignment for my CSTN 1131 (Small Buildings) course about joist and beam selection.
We are given a single-storey house that is 42-6 long and 27-8 wide. There is one beam running along the long direction, and the joists run perpendicular to it. The beam is located 10-0 from one wall and is supported at both ends and can have a maximum of two columns. All lumber must be No.2 SPF.
I need to:
- Calculate the two joist spans (shorter and longer span)
- Determine the supported length of the beam
- Calculate the maximum span between beam supports (column spacing)
- Select appropriate joist sizes (same depth for both spans) using the span tables
- Select an appropriate beam size using the beam table
- Compare the allowable spans from the tables with the required spans
Could you please solve this step-by-step and show all calculations clearly using the span tables?
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