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The hip or valley rafter also connects the ridge to the plate, but lies at a 45-degree angle to the common rafter. This number gives the length of the hip or valley rafter per seventeen units of run. Difference in lengths jacks. The jack rafters lie in the same plane as the common rafter but connect the top plate (the wall) or ridge board to ...
Among its basic uses are marking common, hip, valley and hip, or valley jack rafters, laying out stair stringers, determining and marking angles, and making square cuts on boards. Common lines made using a speed square include perpendicular cut marks and Angles definition of an angle for roofs, stairways, and decks. The tool uses a 0° reference.
Compass rafter: A rafter curved or bowed on the top (the top surface of a rafter is called its "back") or both the top and bottom surfaces. Curb rafter: The upper rafters in a curb (kerb, gambrel, Mansard roof) roof. Hip rafter (angle rafter): The rafter in the corners of a hip roof. The foot of a hip rafter lands on a dragon beam.
Granite Rock Company was founded on February 14, 1900 by Arthur Roberts, (A.R.) Wilson, and Warren R. Porter.Wilson was born in San Francisco in 1866, graduated from MIT with the class of 1890, and returned to California where he partnered with Kimball G. Easton in a Bay Area street paving and construction firm known as Easton and Wilson.
Rock Structure Rating (RSR) is a quantitative method for describing quality of a rock mass and appropriate ground support, in particular, for steel-rib support, developed by Wickham, Tiedemann and Skinner. [1] [2] [3] The RSR concept introduced a rating system for rock masses. It was the sum of weighted values in this classification system.
Rafter – is one of a series of sloped structural members that extend from the ridge or hip to the wall plate, downslope perimeter or eave, and that are designed to support the roof deck and its associated loads. [30] A pair of rafters is called a couple. In home construction, rafters are normally made of wood. Exposed rafters are a feature of ...
Robbers Roost (unincorporated Kern County, California, also known as Robber's Roost and Bandit Rock) is a rock formation in the foothills of the Scodie Mountains portion of the Southern Sierra Nevada Mountain Range in the North Mojave Desert. The formation overlooks the southern portion of the Indian Wells Valley.
Seal Rock (San Mateo County, California) Seal Rocks (San Francisco, California) Separate Reality (climb) Stoney Point (California) Suicide Rock; T. Tahquitz Peak;
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