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Street elbows are available with bend angles of 90°, 45°, and 22.5°. They can be used in many plumbing applications, including water supply, drainage, sewers, vents, central vacuum systems, compressed air and gas lines, heating and air conditioning, sump pump drains, and other locations where plumbing fittings would be used to join sections of pipe.
Membership on the B16 Standards Committee [1] and its Subordinate groups include a variety of representations from the field in various interest classifications. These interest classifications are; Manufacturer, Distributor, Material Manufacturer, Consumer/User, Designer/Constructor, Regulatory, Insurance/Inspection and General Interest.
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
The 45th parallel north is often called the halfway point between the equator and the North Pole, but the true halfway point is 16.0 km (9.9 mi) north of it (approximately between 45°08'36" and 45°08'37") because Earth is an oblate spheroid; that is, it bulges at the equator and is flattened at the poles. [1]
The record, fitting in with the popular surfing craze of the time, swiftly rose up the Billboard Pop charts, reaching No. 4 and becoming a classic 1960s hit. [5] The tune featured Alberti bass arpeggios. Although they had myriad surf tunes, "Pipeline" was The Chantays' only hit single, and is considered one of the landmarks of the surf genre.
The elbow method is considered both subjective and unreliable. In many practical applications, the choice of an "elbow" is highly ambiguous as the plot does not contain a sharp elbow. [ 2 ] This can even hold in cases where all other methods for determining the number of clusters in a data set (as mentioned in that article) agree on the number ...
The Barcol hardness test characterizes the indentation hardness of materials through the depth of penetration of an indentor, loaded on a material sample and compared to the penetration in a reference material.
Elbow's fifth studio album, Build a Rocket Boys!, was released on 7 March 2011. [29] [30] [31] [non-primary source needed] Upon its release, the album hit Number 2 in the UK album charts, the highest of any Elbow album to date. [32] Build a Rocket Boys! also earned the band their third nomination for the Mercury Prize. [33]