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More stories about Slab

  • On the Job

    Retrofitting a Lally column; roof demo by crane; working wireless

  • Supporting a Wide-Span Floor With Structural Steel

    Sculptural steel columns and beams turned a two-car garage into a two-story living space

  • Why Doesn't a Post-Tensioned Slab Buckle?

    Q: Is it possible that a post-tensioned garage slab could literally buckle in half when the tendons are tensioned, or does rebar in the slab prevent that from happening? Also, why are these types of slabs so common in Las Vegas? Is it because of the soil?

  • Fixing a Radiant-Tubing Leak

    Q. I have a leak in my recently installed radiant tubing, no doubt caused by freezing last winter before the system was fully operational. The tubing is a 300-foot run buried in a 4-inch concrete slab. Is there some kind of "stop leak" that can be circula

  • Tiling a Breezeway

    Q. I've been asked to tile the floor of an enclosed breezeway that gets tracked with a lot of dirt, leaves, and snow. Besides being subject to the temperature extremes found in Ohio, the existing concrete slab has a crack running across its width. Is porcelain tile the best option in this situation...

  • Will Carpet Stifle a Radiant Slab?

    Q. I'm finishing a basement room for customers who want to put carpet over the radiant slab. I'm concerned the carpet will insulate off some of the heat, but I can't talk them out of it. The slab is 4 to 5 inches thick, and the 1/2-inch PEX tubing is laid out on 12-inch centers, with 11/2 inches of...

  • Demo Near Post-Tension Cables

    Q. What precautions should you take when tearing out a post-tensioned slab? What are the risks? We are pouring a large post-tensioned slab, and while there is no demo involved at this stage, I would like to know how to proceed in case there is a plumbing

  • Letters

    Cooling vs. dehumidification; building paper and code; manufactured stone; sub-slab moisture membrane; more

  • Exposed Aggregate Concrete

    A concrete contractor explains how he creates good-looking walks, drives, and patios by combining aggregate finish concrete with inlayed brick and stone.

  • Curing Concrete in Hot Weather

    Q. I've recently moved my contracting business to the South. Concrete finishers here tell me that a slab poured outside on a hot day won't cure properly unless it's kept wet. They do this by having someone periodically spray the slab with water from a hos