Permit approved!

[Firebrick43]

New Issue? The these jokers dug the footer trench 18” wide instead of the required 16”. Maybe a dumb question but would it be acceptable to just add 2” of polystyrene insulation board to the inside of the trench? And if it would be acceptable how would one anchor it so it doesn’t float out during the pour? Looking for options, ive heard of people insulating underneath slabs before, but im far from knowledgeable about this.

Thanks

Ground spike thru Xps foam would work but why? Concrete is probably 1/2 the cost per cubic foot than the foam.

 

[no704]

Ground spike thru Xps foam would work but why? Concrete is probably 1/2 the cost per cubic foot than the foam.

Very good point! Guess we have a winner!

 

[LXCam]

First congrats you’re finally moving forward with it. As for the footer, you’re only talking a tick over one yard of concrete. I sure wouldn’t **** with it for a couple hundy. But don’t let them pass the buck into you and watch out for any bs short load costs if they try.

 

[PCustoms]

Are they adding forms or just dumping the crete in a trench?

 

[KenC]

In my world the drawings are minimum sizing for concrete. It is nearly impossible to size a trench footing exactly, dirt is not a precision material. I'd expect 2" to be really good. And, the customer pays for the concrete to fill the hole, not the prints.

 

[mm08822]

In my world the drawings are minimum sizing for concrete. It is nearly impossible to size a trench footing exactly, dirt is not a precision material. I'd expect 2" to be really good. And, the customer pays for the concrete to fill the hole, not the prints.

Agree 100%. I was also thinking the outer form boards were filling that space. (And that would be tight!!)

 

[larry4406]

Are they adding forms or just dumping the crete in a trench?

Not sure what the OP is doing but we do both at the job depending on what the pour is. Not an appropriate technique if weep holes and perimeter system is needed.

A good hoe operator can make a near perfect trench. Then pound in grade pins using a laser, prepare rebar per plan along with the UFER, inspect, and fill the trench and screed to the grade pin. This is an example of the trench method for a detached garage. The conduit is for the electric service that goes up the concrete wall and the adjacent piece of rebar painted white is the UFER. Grade pins are visible.



For a footing with weep hole and perimeter drainage, we cut the pad 8" below top of slab. This allows 4" of gravel, then an additional 4" for the slab. The footing forms are then "railed up" with 2x forms and we then dig downwards an additional 4" within the interior of the form boards. We call this "dig 4 rail 4" and is used when we have good soils for 8" tall footings. Here is a progress pic of dig 4 rail 4 and the grade pins are visible.

 

[Sturgeon]

And your paying there wages, stay strong and best of luck. Few years ago pulling my permit and county building dept woman going thru blue permits saw one of two covered porches and said hold on. More $$$ and out the door I went. In credibly demeaning experience.

 

[no704]

Are they adding forms or just dumping the crete in a trench?

Only forming the top 6”’slab. Footings are just crete in a trench with some rebar.