Replies

1. 
   dovetail97128 | Jun 28, 2007 05:16am | #1

   Jon S,

   There is a code that applies to this ?

   News to me.

   "Poor is not the person who has too little, but the person who craves more."...Seneca
2. 
   IdahoDon | Jun 28, 2007 05:53am | #2

   Inside the garage it's better to have any moisture drain to the exterior or a drain.  I can't say I've seen a code requirment and it never comes up since we always slope it, but there might be.

   1/8" per foot is what we shoot for, but even 1/16" per foot with a very even finish is much better than flat.

    

   Beer was created so carpenters wouldn't rule the world.

3. 
   davidmeiland | Jun 28, 2007 06:40am | #3

   IRC '03... section R309 is Garages and Carports

   309.3 The area of the floor used for parking of automobiles or other vehicles shall be sloped to facilitate the movement of liquids to a drain or toward the main vehicle entry doorway.

   I was talking about this a couple of days ago with my concrete sub. He is pouring a huge slab for a hangar. First plan was for a monopour, then the requirement for slope came to light, which converted the job into a footing/wall pour followed by a second pour of a sloped slab. Obviously they can't slope the whole building.

1. 
   caseyr | Jun 28, 2007 06:52am | #4

   "Obviously they can't slope the whole building."Oh, I don't know about that - I have seen a lot of sloped buildings and even lived in a few... Of course, none of them were intentional.

2. 
   CapnMac | Jun 28, 2007 05:16pm | #5

   He is pouring a huge slab for a hangar. First plan was for a monopour, then the requirement for slope came to light, which converted the job into a footing/wall pour followed by a second pour of a sloped slab. Obviously they can't slope the whole building.

   He ought to be glad it's not the facility we did in San Antonio--4-phase hanger facility, of "units" of 250' x 250' to eventually be a 500'x500' building circa 45-50' tall.  Engineer & clinet had some fancy requirments, too (like verifiable decimal slope not found on the average level <g>)  Top concrete layer not only had to slope to drains and to exterior, but had to be anti-static as well.

   This was about 25 years ago now, well before laser levels, so, how they set the screeds to the 0.10"/foot required slope, I clean do not know.

   Concrete man had to rip a bunch of stuff out of that project during phase one, too.  The vapor-proofed, and fire-resistant sumps & drains built into the slab just vexed that contractor no end (not helped by some slope uh-ohs by the fireprotection consultant).Occupational hazard of my occupation not being around (sorry Bubba)