How do you do grid method calculations for earthwork by hand?

Answer 1

its called using your brain or the calculator or internet explorer but you can use a method

e.g:

156x321

100 50 6

300 30000 15000 1800 then add all of this row together except from the 300

20 2000 1000 30 add all of this row together except from the 20

1 100 50 6 add all of this row together except from the 1

then add all of them together and then thats what your answer will be