1) Timber formwork and shoring support a cast-in-place concrete slab during curing. The 9 inch concrete...

1) Timber formwork and shoring support a cast-in-place concrete slab during curing. The 9 inch concrete slab is placed on the ¾ inch plywood supports that are supported by 2 x 4 joists spaced 16 inches apart. 4 x 6 stringers spaced 36 inches apart support these joists. The shores directly underneath the stringers are 4 x 4 and are spaced at 5 ft intervals along the stringers. The lumber is No. 2 Douglas Fir Larch. The concrete has a specific weight of 150 pcf and a construction live load of 50 psf. Limit all deflection to l/360. [Weight of forms, estimated = 7.5psf]

You are asked to:

1. Check the joist spacing of 16 in.

2. Check the stringer spacing of 36 in.

3. Check shoring space of 5 ft along the stringer.

Expert Solution

Ally Wells answered 9 months ago

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