How to Compute Cut or Fill with the Grid Method
This video explains how to manually compute the number of cubic yards and dump truckloads of cut or fill earthworks using the grid method.
Duration 9:45
It was created by Su Leone, M.S.Ed. for the Project Management & Estimating course in the Civil Engineering Technology degree program at Wake Technical Community College. For more information on this course, please visit geomatics.waketech.edu
Пікірлер: 22
Nice Explanation. Thanks you for making video.
Aren't you supposed to calculate the swell before calculating the trucks?
Nice explanation, but I got dizzy with the moving camera.
Plz show completely screen
I dont understand, i did this method when I did my ICC soil plan reading and still failed the exam. It is really frustating i dont know what im doing wrong
kzread.info/dash/bejne/lI1q1bCzqpmwmc4.html
This would have been a better video if your hand wasn't in the way.
In real world examples, it becomes a little more tricky when you have an Asphalt road running through three quarters of the grid and you have a building foundation running through one quarter of the grid. Then you have to account for their individual thicknesses avg it (3 x road thickness + 1 x building fdn thickness)/4 to get the average bottom elevation. Of course there are earthwork takeoff software like Roctek Winex etc. to automate all these calculations and get a very accurate cut/fill takeoff.
HI, Very nice example ... it was a good refresher on manual earthwork takeoff calculations for me ... just some minor corrections if I may point out please... one the 4th point 159-157.5 is 1.5 (instead of 2.5) and so the average is (.6+.3+1+1.5)/4 = 0.85 ft Fill Height. Vol = 30 ft x 30 ft x 0.85 ft = 765 c.ft. And I guess here's the important part.... since this fill is compacted and we have a soil shrinkage of 12% we need more soil i.e., 765 x 1.12 = 857 c.ft. / 27 cft per yd = 32 cyd. And 1 truck being 13 cyd. We need 32/13 = 2.46 that's approx 3 truck loads of soil fill. Same as your final answer luckily unless you can order 2 and a 1/2 truck loads. Anyways nice example. Thanks.
I'm lost, so once you figured 36.67 cy of fill required for this section wouldn't you then multiply 36.67 x 1.12 = 41 cubic yards? That's adding 12% for shrinkage? Or is it 12% less? -4.4 yards = 32.3 cubic yards? If the fill shrinks after compaction then 41 cubic yards would go in and be compacted down 12% = 37 cubic yards. Is this right?
awesome content