Question about footings

[kcir]

I am wanting to build a 20x40 concrete pad 4" with a metal roof only, no sides. What kind of foooting do I need around the peremiter? 12"X12", 18"x18"?

I am in east Texas so no frost/freeze. Does anyone here know?

Thanks,
Rick

 

[BTDT2]

What kind of soil? Compacted or loose?

 

[Egon]

The footing size would be determined by the loading.

 

[kcir]

It's a hard sand, not red sand the yellow sand. Loose sand will get very hard here after a good rain. So sand/clay.

 

[/pine]

check with local contractors and see what is the norm for the locaton...

 

[Carykong]

With "no sides" on your structure all the weight will be bearing on your posts,right? If that be the case,you do not need a perimeter footer.

 

[Duffster]

I am wanting to build a 20x40 concrete pad 4" with a metal roof only, no sides. What kind of foooting do I need around the peremiter? 12"X12", 18"x18"?

I am in east Texas so no frost/freeze. Does anyone here know?

Thanks,
Rick

Posts in the ground or on the slab?

 

[Mousefield]

The footing size would be determined by the loading.

What kind of soil? Compacted or loose?

It should depend on the two above. I just poured a 12ft X 28ft foundation a couple of weeks ago and we went 18 inches wide based on the soil and building load.

 

[cycle_gator]

Mousefield:

Just curious, what is the slab inside the one end of the footing for?

 

[dcyrilc]

It should depend on the two above. I just poured a 12ft X 28ft foundation a couple of weeks ago and we went 18 inches wide based on the soil and building load.

Greenhouse?