Design the formwork $($Figure $13-2)$ for an elevated concrete floor slab $(200mm)$ thick and unit weight $(2\mathrm{.}4$kPa$).$

Sheathing will be nominal $1in.(25-mm)$ lumber while $200mm)$ lumber will be used for joists.

Stringers will be $48in.(100200mm)$ lumber.

Assume that all members are continuous over three or more spans.

Commercial $(26-kN)$ shores will be used.

It is estimated that the weight of the formwork will be $(0\mathrm{.}24$kPa$).$

The adjusted allowable stresses for the lumber being used are as follows:

Maximum deflection of form members will be limited to $\frac{\frac{?}{?}}{180}.$

Use the minimum value of live load permitted by ACI.

Determine joist spacing, stringer spacing, and shore spacing