Hi Everyone, need your expert suggestions ---
I am building a 2nd story addition and need to build a build a perimeter stem wall and foundation underneath and existing interior wall. THis is all happening in an existing crawl space in a 50 year old home.
So my 2 questions.
1. i cant use a regular "build it bottom up" approach..so here are the steps i was thinking of a) attach the mudsill to the bottom of the existing girders
b)drill the holes for the hold downs from the wall bottom plate through the subfloor, girders, through the mudsills and install the j bolts..with nuts etc. So at this point they are just hanging down from the floor in the crawl space. c) dig the footing to line up with the j bolts d) build forms for the stem wall..but instead of using stakes i would "hang and brace" the stem wall forms from above/using 2x4 braces attached to the existing girders and subfloor. see attached sketch
2. I was planning to pump in the concrete...my next question - do i just drop the concrete in the space between the mudsill and form? should i make a "door" in the form to fit the hose and then close it up when full???? not sure the best way.
Thanks again for the help!
I am building a 2nd story addition and need to build a build a perimeter stem wall and foundation underneath and existing interior wall. THis is all happening in an existing crawl space in a 50 year old home.
So my 2 questions.
1. i cant use a regular "build it bottom up" approach..so here are the steps i was thinking of a) attach the mudsill to the bottom of the existing girders
b)drill the holes for the hold downs from the wall bottom plate through the subfloor, girders, through the mudsills and install the j bolts..with nuts etc. So at this point they are just hanging down from the floor in the crawl space. c) dig the footing to line up with the j bolts d) build forms for the stem wall..but instead of using stakes i would "hang and brace" the stem wall forms from above/using 2x4 braces attached to the existing girders and subfloor. see attached sketch
2. I was planning to pump in the concrete...my next question - do i just drop the concrete in the space between the mudsill and form? should i make a "door" in the form to fit the hose and then close it up when full???? not sure the best way.
Thanks again for the help!