Based on Figures, the amount of concrete poured, rebar, and form used in continu

Question

Based on Figures, the amount of concrete poured, rebar, and form used in continuous footings and foundation wall can be estimated. For wall width and continuous footing width, see figure below.

1)      Using a waste factor of 14 percent, determine the number of cubic yards of concrete needed to pour the continuous footings shown in Figure below. Assume that the wall is centered over the footing.

2)      Determine the amount of rebar needed for the continuous footing shown in Figure below. Allow for two inches of cover. Add 12 percent for lap and waste to the continuous bars.

#5 Dowel bar (                ) pounds

#4 Rebar @ 12” O.C (                ) pounds

#4 Continuous rebar (               ) pounds (apply waste factor for lap)

Total pounds (                          )           tons (                     )

3)      Determine the number of linear feet of forms needed for the continuous footings shown in Figure below.

Explanation / Answer

1.

length is= 25'

width is= 16'

width of footing path= 1'

so, the area of footing is = (2*23*1)+(2*16*1)=46+32= 78 sq.f

so, number of cube required = 78.

waste is 14%

now the waste is = (78*14%) = 11

so we need = (78+11) = 89 numbers of cube. (Answer)

if we use this previous waste then number of cube need (78-11) = 67 (Answer)

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.