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2. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   The door slab is mounted to roller and a track at the top of the door and slides inside a wall. ... and a width of 18, 24, 26, 28, 30 or 36 ... the exterior doors of ...

3. Slab hut - Wikipedia

   en.wikipedia.org/wiki/Slab_hut

   13] As in every third panel there was a door or a window, and as the horizontal slabs stopped within two feet of the ceiling, the building was exceedingly airy, and open on all sides. [54] In this case, too, instead of grooving the posts, a channel might be made by nailing battens either side of the uprights, and the slabs fitted inside these.

4. Concrete slab - Wikipedia

   en.wikipedia.org/wiki/Concrete_slab

   A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Steel-reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving (see below). [1] [2]

5. Properties of concrete - Wikipedia

   en.wikipedia.org/wiki/Properties_of_concrete

   Engineers usually specify the required compressive strength of concrete, which is normally given as the 28-day compressive strength in megapascals (MPa) or pounds per square inch (psi). Twenty eight days is a long wait to determine if desired strengths are going to be obtained, so three-day and seven-day strengths can be useful to predict the ...

6. Joe Biden praises 'dear friend' Jimmy Carter after the former ...

   www.aol.com/joe-biden-praises-dear-friend...

   As Joe Biden's presidency nears its end, he bid farewell to a "dear friend" in former President Jimmy Carter.. Carter, 100, died on Sunday at his home in Plains, Georgia. Biden released a ...

7. Curtain wall (architecture) - Wikipedia

   en.wikipedia.org/wiki/Curtain_wall_(architecture)

   The 1 inch insulation glass is typically made up of two 1/4-inch lites of glass with a 1 ⁄ 2 inch (13 mm) airspace. The air inside is usually atmospheric air, but some inert gases, such as argon or krypton, may be used in order to offer better thermal transmittance values. In Europe, triple-pane insulating glass infill is now common.