Building a footer with 16 inch icf stem wall and concrete floor at the top of the stem wall. Does the DWV go in before the footer and stem wall to help locate the drain locations more exactly or should drain go in first and use string reference lines to locate drains?
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
Fine Homebuilding's editorial director has some fun news to share.
Featured Video
Highlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Replies
my standard procedure is to locate before i pour the footing,then after everthing is poured relize i'm off by 4.5".lol anyway no great advice here just a bump larry
if a man speaks in the forest,and there's not a woman to hear him,is he still wrong?
Not quite certain i am understanding you .
If you are trying to locate the exit through foundation point of the drain, I figure out where along the foundation works best by discussing it with the plumber, then starting at the high point of the system (generally the furthest drain away from the exit point) I calculate how far below the finish floor the exit point has to be by using 1/4" to a ft as the required fall.
I almost always put a sleeve in at that point. It may fall below footing , or in the wall or footing itself. If it falls in the footing I over excavate and reinforce the footing so as not to have a weakened footing .
if you use batter board and string line you will know exactly where the drains will be located. the dmv really needs to go above the footer (if you have the fall) might have to step down the footing in that area. because the footing carring the load. if you can go deeper with the pipe, that be ok, but you need ar least two feet below the footing and then you have a comppaction problem.so I say footing on undistrub soil with the pipe going through the icf above the footingsome people will let you sleve the footing, I myself dont like that ideaEdited 5/1/2008 6:39 am by brownbagg
Edited 5/1/2008 6:39 am by brownbagg
I agree - I like the sleeve thru the wall or under the footing.But I don't try going that deep under it. any footing that can't bridge a 6" spot is a poorly done footing, or on some really terrible soils to begin with
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
The bottom of the footer is 24 inches deep. The drain will go under the footer at about 6 feet. Someone told me at sometime during the planning stage that you could pound a chase through the dirt underneath the footer at the 6 foot depth to complete the drain if the footer is built first. Is this reasonable? The end result of this building is a concrete floor on a single level so all the drain plumbing needs to be precise for the application.
OK, this is a clearer scenario of what is happening. If it were me I would do the digging and installation of the actual drain line or a sleeve at the point it crosses under the footing. Extend the drain line or sleeve 3-6' outside the foundation and if it works for the plumbing layout the same distance inside. Turn the inside leg up with an elbow and pipe until it rises above the inside grade of where the drain will connect. Later when you are ready to do the inside of foundation plumbing you can dig down to the vertical height needed and make the connection.
Backfill (compacting as you go ) and then set up and pour the footing and foundation. This way you can connect the rest of the system without any danger of disturbing the footing or foundation.
This is a common method of dealing with this situation in commercial work , maybe less so in residential. Draw an exact map of locations and elevations of the pipe for future reference.
They can't get your Goat if you don't tell them where it is hidden.