Explain the Earthwork

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written 8.8 years ago by

teamques10 ★ 69k

• modified 8.8 years ago

Calculate the quantities of earthwork is cutting and banking for a portion of road with the following data:

Chainage(m)	R.L of Ground level
0	0,135.6
30	133.8
60	133.5
90	135.3
120	135.8
150	136.2
180	136.3
210	136.5

Formation width of road is 10m. Formation level of at starting chainage is 135.5m. The road surface shall be given a falling gradient of 1 is 120. Side slope is cutting 1:1.5 and is banking 1:2

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

Marks: 10 M

Year: Dec 2012

quantity survey estimation and valuation

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1 Answer

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written 8.8 years ago by

teamques10 ★ 69k

$A_{banking}=bh+sh^2=10h+2h^2$

$A_{cut}=bh+sh^2=10h+1.5h^2$

$\frac{1}{120}=\frac{x}{30} \\ \; x=0.25$

$\underline{\mathrm{Means \ \ area \ \ method}} \\ Volume = \frac{A_1+A_2}{2}×L= \frac{18.7+19.5}{2}×30=573 m^3$

$\frac{x}{30-x}=\frac{0.1}{1.45} \\ \; x=1.935$

$\hspace{5cm}$

$\frac{x}{30-x}=\frac{1.5}{0.55} \\ \; x=21.95$

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