Workout the quantity of earthwork for a portion of a road.

1. Top width of formation = 12m
2. R.L of formation at zero chainage = 51.4m
3. Falling gradient = 1 in 200

4. Side slope $\hspace{1cm}$ 1V:2H (Banking)

   $\hspace{2.70cm}$ 1v:1.5H (Cutting)

Mumbai University > CIVIL > Sem 7 > Quantity survey Estimation and valuation

Marks: 12 M

Year: Dec 2014

Enbarkment

$A_{banking}=bh+sh^2=6h+2h^2$

Cutting

$A_{cut}=bh+sh^2=5.5h+1.5h^2$

Falling gradient – 1: 200

$$\frac{1}{200}=\frac{x}{30} \\ \; x=0.15$$

$$\frac{x}{30-x}=\frac{0.4}{0.25} \\ \; x=18.46$$