A 90m by 90m lot is to be divided into 9 equal square sections. The elevations of the ground surface at each corner of the square section are as follows:   A=7.3m E=6.7m I=8.3m M=8.5m B=8.3m F=8.2m J=8m N=8.1m C=6.8m G=8.7m K=6.3m O=8.8m D=8.1m H=7.8m L=7.2m P=7.5m   Find the volume to be excavated if the ground surface is to be leveled to elevation 5m.

Structural Analysis
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Chapter2: Loads On Structures
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A 90m by 90m lot is to be divided into 9 equal square sections. The elevations of the ground surface at each corner of the square section are as follows:

 

A=7.3m E=6.7m I=8.3m M=8.5m

B=8.3m F=8.2m J=8m N=8.1m

C=6.8m G=8.7m K=6.3m O=8.8m

D=8.1m H=7.8m L=7.2m P=7.5m

 

Find the volume to be excavated if the ground surface is to be leveled to elevation 5m.

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