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  2. Score tools for 61% off during Presidents' Day: DeWalt ...

    www.aol.com/lifestyle/score-tools-for-61-off...

    Score up to 61% off tools at the Home Depot, Walmart, and Amazon as part of the brands' Presidents' Day deals. Here are the best we've found. ... DEWALT Mechanics Tools Kit and Socket Set. $67 ...

  3. Precast concrete lifting anchor system - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete_lifting...

    Suction force: S = A x 1.0 kN/m 2 = 18 x 1.0 = 18 kN; Applied loads at element lifting (sling angle and lateral tension) F = W x Ksl x Ks x 0.5 = 64.8 x 1.16 x 1.2 x 0.5 = 45.1 kN; Anchor capacity for initial lift F/n = 23 kN per anchor during initial lift (n = 2 lifting anchors) Transport loads in the yard and on-site

  4. Self-leveling concrete - Wikipedia

    en.wikipedia.org/wiki/Self-leveling_concrete

    Self-leveling concrete was invented in 1952 by Axel Karlsson from Sweden. The first product was a combination of wood glue, fine sand and cement with additives. [1] It was called flytspackel, which directly translates to "floating putty". The term self-leveling can be traced back to a patent applied by the company Lafarge in 1997. [2]

  5. Tieback (geotechnical) - Wikipedia

    en.wikipedia.org/wiki/Tieback_(geotechnical)

    Grouted tiebacks can be constructed as steel rods drilled through a concrete wall out into the soil or bedrock on the other side. Grout is then pumped under pressure into the tieback anchor holes to increase soil resistance and thereby prevent tiebacks from pulling out, reducing the risk for wall destabilization.

  6. Airlock - Wikipedia

    en.wikipedia.org/wiki/Airlock

    Saturation systems typically feature a variety of airlocks, including a stores lock for the transfer of supplies and a medical lock for secure passage of medical necessities or emergency evacuations. Complex "split-level" systems, which house divers at different pressure levels for varied work depths, may necessitate additional airlocks.

  7. Quick connect fitting - Wikipedia

    en.wikipedia.org/wiki/Quick_connect_fitting

    For hoses and piping, a quick connect fitting, also called a push fitting or Quick Connect Coupling, is a coupling used to provide a fast, make-or-break connection of gas or liquid transfer lines. Operated by hand, quick connect fittings replace threaded or flanged connections , which require wrenches.

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