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2. Hollow-core slab - Wikipedia

   en.wikipedia.org/wiki/Hollow-core_slab

   The precast concrete slab has tubular voids extending the full length of the slab, typically with a diameter equal to the 2/3–3/4 the thickness of the slab. This makes the slab much lighter than a massive solid concrete floor slab of equal thickness or strength. The reduced weight also lowers material and transportation costs.

3. Gypsum concrete - Wikipedia

   en.wikipedia.org/wiki/Gypsum_concrete

   Gypsum concrete is lightweight and fire-resistant. A 1.5-inch slab of gypsum concrete weighs 13 pounds per square foot versus 18 pounds per square foot for regular concrete. [10] Even though gypsum concrete weighs less, it still has the same compressive strength as regular concrete, based on its application as underlayment or top coat flooring ...

4. Square (unit) - Wikipedia

   en.wikipedia.org/wiki/Square_(unit)

   The square is an Imperial unit of area that is used in the construction industry in the United States and Canada, [1] and was historically used in Australia. One square is equal to 100 square feet. Examples where the unit is used are roofing shingles, metal roofing, vinyl siding, and fibercement siding products.

5. Transrapid - Wikipedia

   en.wikipedia.org/wiki/Transrapid

   Due to the 3.7 m (12 ft 2 in) width of the Transrapid carriages they have a floor area of about 92 square meters (990 square feet). This works out at between A$179,000 and A$217,000 per square meter. In comparison, InterCityExpress which are also built by Siemens cost about A$6 million per carriage. Due to the 2.9 m (9 ft 6 in) width of the ICE ...

6. Screed - Wikipedia

   en.wikipedia.org/wiki/Screed

   Screed (material) pumping truck. A development in the UK is the delivery, mixing, and pumping of screed from a single vehicle. Where previously screed jobs required a separate pump to administer the screed, these new machines can now administer the screed directly from the mixing pan to the floor at a range of up to 60 meters.

7. 10 Vintage Porcelain Dolls That Are Worth a Fortune

   www.aol.com/10-vintage-porcelain-dolls-worth...

   Price on eBay: $8,500 Porcelain dolls don’t have to be more than 2 feet tall to be worth a lot of money. This little lady stands only 15 1/2 inches tall, but her ornate details and impressive ...