You are correct in that it was a typo. 4 feet wide, 2 deep, 2 long. It is
for a shed, not a foundation for a house. The shed is raised on concrete
pillars, so it is above the ground. The floor of the shed is actually 2 1/2
feet off the ground, there is no concrete foundation, so I would actually
have to build a back to the form so the concrete still doesn't spill. And
the concrete will be meeting up against wood, so would the mastic still work
for the joint, or do I know need to use something else.
Thanks.
"Colbyt" wrote in message
...

"Eric and Megan Swope" wrote in message
news:8Kpde.13976$Ab.12010@trndny04...
Travis, thanks for the great link and Colbyt for the advice. The ramp I
am
building is going to be about 2 feet in length, about 4 feet wide, and 4
feet deep at its deepest point (right near the shed). Colbyt, do you
still
think I would still need to double up on the mastic, or need it at all
with
a ramp this size? Thanks again.


There has to be a typo in the above statement.

A 2 foot run with a 4 foot rise is not something you are going to walk up
or
drive a mower up. A four foot thick slab is nothing you are going to mix
by
hand.

For the average 1000 pound garden tractor a 4" thick slab is all you need.

I think your peace of mind is worth the 2 or 3 bucks it will cost you.
All
you are doing is preventing the concrete from bonding to the old.

Colbyt