depth of footings
 

can anyone tell me what the mass code is for depth of footings for a deck?

4 feet

thank you.

Maybe you'll get "lucky" and hit ledge around two feet down :bl:

Four feet is to get it below frostline. The last foot takes forever....inch by inch.....

i'm at about 42". at 24" i hit hard packed clay.it's like opening an ice fishing hole w/ a spoon. thanks again

Now that your into Clay, your supposed to flair out the bottom

4ft is code

Don't let the rain fill up your tubes - :crying:

You don't want to have to do it twice. The rain will soften them and they will cave in on you. ... yes, that was learned from experience. :fishslap:

42"? Good enough.

if you hit clay you need to use bigfoots niko, or at least last I knew, and unless you hit and unmovable boulder they need to be at least 4' you building at your house?

Definately use bigfoots. You will not be sorry later. Especially if you close it in and heat it later. 4 ft. is code, but the extra support from the bigfoot will not allow any movement later. Especially on clay.:bounce:

have fun with the knuckle busters. Built decks and proches for a summer, i dont think my hands have ever been the same

Don't use big foots, you will have to dig a 3'wide hole! Just flair the bottom out with your shovel. 48"and not an inch less if your inspector is an ass. 42" is fine if you don't have a permit.

If you opt not to use bigfoots, just pour into the sonotube as you usually would and when full just lift it up about eight inches and let the concrete flair out the bottom.