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2. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   Felt paper is available in several grades, the most common being Type 1—commonly called 15-pound (15#) or No. 15 (#15)—and Type 2—commonly called 30-pound (30#) or No. 30 (#30). The weight designations originated with organic base felt weighing 15 or 30 pounds per 100 sq. ft. (6.8 kg or 14 kg per 9.3 m 2).

3. Prices of chemical elements - Wikipedia

   en.wikipedia.org/wiki/Prices_of_chemical_elements

   Abundance and total mass in Earth's crust [b] (⁠ mg / kg ⁠) Price [7] Year Source Notes USD/kg USD/L [c] 1: H: Hydrogen: 0.00008988: 1400 (3.878 × 10 19 kg) 1.39: 0.000 125: 2012: DOE Hydrogen [8] [d] 1: 2 H (D) Deuterium: 0.0001667 [10] 13 400: 2.23: 2020: CIL [11] [e] 2: He: Helium: 0.0001785: 0.008 (2.216 × 10 14 kg) 24.0: 0.004 29: ...

4. Flat roof - Wikipedia

   en.wikipedia.org/wiki/Flat_roof

   A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. The slope of a roof is properly known as its pitch and flat roofs have up to approximately 10°. [1] Flat roofs are an ancient form mostly used in arid climates and allow the roof space to be used as a living space or a living roof. Flat roofs, or "low ...

5. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   The connection wires run under the ridge cap at the top of the roof. Efficiency ranges from 10–18% but costs only about $2.00–$3.00 per watt of installed capacity, compared to monocrystalline which is 17–22% efficient and costs $3.00–$3.50 per watt of installed capacity. Thin-film solar is light weight at 2.1–3.1 kg/m 2 (7

6. Coins of the South African rand - Wikipedia

   en.wikipedia.org/wiki/Coins_of_the_South_African...

   Denominations included 1 ⁄ 2, 1, 2, 5, 10, 20 and 50 cents. Silver was replaced in coins by nickel. Initially the coinage bore the portrait of Van Riebeeck, and later the State Presidents of South Africa (except F.W. de Klerk) or the South African coat of arms. The country name was given in Afrikaans, English or both.

7. Construction - Wikipedia

   en.wikipedia.org/wiki/Construction

   This is an accepted version of this page This is the latest accepted revision, reviewed on 24 February 2025. Process of building or assembling a building or infrastructure For other uses, see Construction (disambiguation). "Construction site" redirects here. Not to be confused with Construction Site (TV series). Construction site and equipment prepared for start of work in Cologne, Germany ...

8. 1 South African Infantry Battalion - Wikipedia

   en.wikipedia.org/wiki/1_South_African_Infantry...

   1 SAI is equipped with the Vektor SS77 Squad Automatic Machine gun, Fabrique Nationale 7.62 mm (0.300 in) Light Machine gun, Vektor R4 5.56 mm (0.219 in) assault rifle, 40 mm (1.6 in) Multiple Grenade Launcher (MGL), Rocket Propelled grenade launcher , [citation needed] M26 Fragmentation grenade, [9] M4 60 mm (2.4 in) patrol mortar (PATMOR ...

9. Transrapid - Wikipedia

   en.wikipedia.org/wiki/Transrapid

   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 carriages they have a floor area of about 72 square meters (775 square feet). This works out at about A$83,000 per square meter.