CurlyDave
Elite Member
I thought I would need 8 cubic yards of concrete, I ended up needing 10!
This is a much more common thing than many people realize. Even if there is not wet sand under the form. An engineer I know who worked for a big concrete form company told me that even though they know exactly how much concrete their forms hold, they were frequently needing extra.
Not that he thought the pre-mix places were shorting them on the measurements or anything, just that it was an interesting problem. And not once ever did they have any left over...
This is a much more common thing than many people realize. Even if there is not wet sand under the form. An engineer I know who worked for a big concrete form company told me that even though they know exactly how much concrete their forms hold, they were frequently needing extra.
Not that he thought the pre-mix places were shorting them on the measurements or anything, just that it was an interesting problem. And not once ever did they have any left over...