Form help needed for 40x60 steel building

[ml504]

I'm rather new to the forum, but have finally put a deposit on a steel building (40x60 rigid steel). The company is local (Louisiana) and gave me the drawings and anchor bolt locations yesterday. I believe the total weight of the building is between 14,000 and 16,000 lbs. There are no specifics on the foundation plan, only what the salesman told me on how they do it if they are contracted to install. He is very knowledgable, however, I wanted to get more opinions before beginning to make sure this is not over-engineered. I have listed his suggestions below:

-16" x 24" footing all around perimeter
-24" x 24" footing under each main support beam
-(2)16" x 16" footings tying each main support beam in the center of the slab
-5/8" rebar (3 runs) all around perimeter and center footings
-#6 6x6 wire mesh

My question, is can I do the following or should I stick with the above. For reference, we built our brick house (2200 sq ft living, single story) 2 years ago using the steel listed below and only 12" x 18" footings. They were recommended by the foundation engineer.

My idea:
-12" x 12" footing all around perimeter
-24" x 24" footing under each main support beam
-(2)12" x 12" footings tying each main support beam in the center of slab
-1/2" rebar (3 runs) all around perimeter and center footings
-#10 6x6 wire mesh

Thanks for any advice!
Matt

 

[ml504]

Any suggestions?

 

[kbs2244]

I don't think the dollars you would save by shaving the foundation will be worth it.
Most of your cost is going to be in time, not materials, even if you do it your self.
Go with his recomendations.
They know what they have to do to avoid call backs.
You don't want to be kicking yourself in 5 years over a $200.00 saving.

 

[Charles (in GA)]

Get an engineer familiar with your area and local requirements.

Charles