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Building Foundations

  • Q&A: Insulating Basement Walls

    Q. I'm doing a basement remodel and am thinking of finishing the block foundation walls by painting the masonry with Drylok, then adhering 4-mil poly over that. Next, I plan to fur the walls with Z-studs, put 2 inches of foil-faced polyiso board between t

     
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    Heavy Lifting: A Housemover's Journal (Subscriber content)

    A Massachusetts building mover details the process of lifting a 1772 post-and-beam house completely intact, transporting it over land and water, and setting it to rest at its new home.

     
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    Piling it On

    Storm surge can exert pressures against pilings in the hundreds or even thousands of pounds per square foot. Post-storm analysis may result in new design standards for oceanfront homes.

     
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    Q&A: Various Forming a Brick Shelf in a Concrete Foundation

    Q. I'm planning to form a simple 4-foot stem wall foundation for a single-story garage using plywood, snap ties, and walers. It needs to have a brick ledge for the top 10 to 12 inches, which will show above grade. What's a simple, effective way to do this

     
  • Q&A : Waterproofing ICFs

    Q. Is there a spray-on waterproofing that's compatible with ICF foundations ? that won't "melt" the polystyrene?

     
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    Q&A: Shower Pan on a Slab

    Q. While I was removing the old tile from a concrete shower pan in a slab foundation, a portion of the 1x5-inch raised concrete lip separated from the slab below. It appears that the lip was formed and placed on top of the slab, and there is nothing tying

     
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    Helical Pier Foundations for Problem Sites (Subscriber content)

    Where space is tight or soils are unstable, building on helical piers can save time and money. A Colorado remodeler who specializes in room additions explains.

     
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    Repairing a Bulging Foundation (Subscriber content)

    A veteran contractor shares his method of repairing damaged foundations with tension rods and concrete deadmen.

     
  • Q&A: Reinforcing a Slab Over Disturbed Soil

    Q. I need to pour a thickened-edge slab foundation for a two-story garage apartment across a recently dug 2-foot-wide utility trench. The backfill over the trench has subsided, and I'm concerned that the foundation may sag and crack at that point. Can I add rebar to the slab to span this area, or...

     
  • Q&A: Various Stucco Over Concrete

    Q. I'd like to finish the above-grade portion of a poured-concrete foundation with a color coat of stucco. The broken-off snap-ties are visible and are slightly rusty. Do I need to treat these with anything before I apply the stucco to prevent a rust stai

     
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    Q&A: Various Shallow Foundation for Flat Site

    Q. I have a client who wants me to build a 30x40-foot unheated barn-garage with a slab floor. The area where the building will sit is very flat, with no lower terrain nearby, so it's not feasible to build a typical 4-foot stem wall with a daylight drain. Frost depth is 48 inches around here...

     
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    A Masonry Chimney in Six Hours (Subscriber content)

    No one likes waiting for the mason, but manufactured zero-clearance fireplaces aren't the only alternative. A Connecticut manufacturer describes his innovative precast chimney system

     
  • Q&A: Various Wheelchair Accessible Shower

    Q. We are building a new home on a slab foundation that is already poured. The customer uses a wheelchair and wants a curbless shower in a bathroom with a tiled floor. Is it possible to keep the bathroom floor level with the finish floors in the other roo

     
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    Q&A: Is It Necessary to Compact Slab Sub-Base?

    Q. We need to pour a 24x24-foot concrete slab for an attached garage next to a precast foundation. The precast walls are 9 feet and 4 feet tall (see photo). Unfortunately, the trench overdig is 7 feet deep and as much as 4 feet wide in some places. We would prefer to avoid backfilling and tamping...

     
  • Q&A: Sinking Foundation

    Q. I'm looking at a wood frame house with a block foundation that is settling. The basement wall sits on a 20-inch-wide concrete footing, but someone later poured a concrete brick shelf from footing to grade and then put brick veneer siding on the house.

     
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    Getting Into Modular Construction (Subscriber content)

    Building modular homes speeds production, increases quality control, and reduces paperwork, according to this stick builder who made the switch.

     
  • Q&A: Insulating a Foundation

    Q. To turn a small outbuilding into a living space, I plan to pour a slab floor within the existing 4-foot frostwall foundation. How much and what kind of insulation should I use for the foundation, and where should I place it -- under the slab or next to

     
  • Trouble-Free Foundations for Expansive Soils (Subscriber content)

    When the soil moves, your foundation had better not. A Colorado builder shares his approach for building on difficult soils.

     
  • Foundations & Site Work (Subscriber content)

    Building roads * Retaining walls * Footings * Walkout foundations * Stem walls * Slabs * Frost-protected foundations * Foundation repair * Half wall foundations * Tying-in to existing foundations * Foundation details

     
  • Foundation Drainage (Subscriber content)

    Preventing frost action * Perimeter drain design * Details for removing roof runoff * Placing drain tile