The Right Footings for Strong Foundations - Fine Homebuilding
Allowing concrete to freeze as it cures also will weaken it. Additional causes of weak concrete are improper rebar size and spacing, and poor rebar installation practices. Undersized footings. Most formed footings for a typical home in New England that I design are somewhere in the range of 16 to 24 in. wide and 8 to 12 in. thick.
Forming and Pouring Footings - Fine Homebuilding
1998年11月1日 · Rebar is then inserted under the brackets and pushed down about 8 in. into the concrete, using the shovel as a gauge. As rebar is pushed in, we jiggle it with the shovel to remove any trapped air. A 2×4 cuts the keyway. We level the concrete by vigorously pushing it with the flat of the shovel until the concrete is at finish grade.
FOOTINGS; re-bar vs. no re-bar - Fine Homebuilding
2006年3月19日 · Basically, concrete is great for compressive loads and lousy under tension. Rebar is placed in concrete to add tensile strength. It will also help hold things together if a foundation cracks. Check your building codes for rebar requirements. They will tell you how much you need, what size you need, and how it should be spaced.
Suspend rebar from bottom of footing - Fine Homebuilding
2006年4月10日 · Typo. 2 by 4 by 1-1/2 inches is what I am familiar with. Two-foot long would be OK in some cases but something that long and thin in concrete might tend to fall apart in handling.They were also used along the sides of beams and columns to keep the rebar away from the forms. later we would pull the forms and you could often see where the blocks were …
rebar in sonotube - Fine Homebuilding
2009年5月18日 · I’m going to be pouring some footings using sonotubes. They will be about 24″ deep 12″ in diameter. The bottom of the hole will be 18″d, I’ll pour about 4″ then set the sonotube in then fill it up. The footings will support a small mud room on the back of a small cabin.
My builder didn’t put any rebar in my foundation walls
2017年6月9日 · We've hired a builder (won't name names) to build us a home in Michigan with 9' basement walls. They were poured 6" thick with 3,000 PSI concrete on concrete footings. The unbalanced dirt is about 7'-8'. There will be a solid concrete slab, with standard mudsill/platform framing. I was present for the footing pour, and the steel form placements for the walls, and …
Pouring Concrete Footings and Piers - Fine Homebuilding
2008年6月21日 · Since the footings are in the ground, I think that I would dig them out at 24" diameter and 18" deep and let the ground be my "form". I would just pour the footings and stick 2-3 pieces of ~36" long rebar in the wet concrete so they will be …
Footing and Foundation in One Pour - Fine Homebuilding
2004年9月1日 · This article details the entire process of filling the footing and foundation in one pour, from building the forms, to smoothing and strengthening the concrete through vibration without putting too much pressure on the forms. Jim Blodgett also shares a great tip for bending rebar quickly and easily without an expensive rebar bender.
Joining Rebar Inside an ICF Foundation - Fine Homebuilding
2016年11月28日 · Use this tip for tying rebar together that’s out of reach. By Fine Homebuilding Editors Builder Mike Guertin knew he needed to reinforce the FHB House ICF foundation walls with continuous rebar from bottom to top, but rebar protruding 8-plus ft. from the footings was not only a hassle to deal with when dropping ICF blocks into place, it was ...
Placement of rebar in a slab - Fine Homebuilding
2007年1月23日 · rebar does nothing till you put a load factor on it, doing the calculation it was proven that 2 #4 is fine but you put in 7#4 then that would be a waste of 5 bars of rebar.Rebar in patio, does nothing, no load factor except if you want a hot tub. rebar in sidewalk does nothing, rebar in curb does nothing except the impact of a car tire, so its ...