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An external parabolic or elliptical mirror captures zenithal daylight, and converges it, to let it pass through a narrow opening in the exterior wall. On the inside, two parabolic mirrors widen the beam to around 60°. The floor area next to the conventional window is lit by the window. Anidolic mirror lighting systems can be divided into three ...
The drainage system collects any water entering the basement and drains it to an internally placed sump pump system, which will then pump the water out of the basement. The Federal Emergency Management Agency (FEMA) recommends basement waterproofing with a water alarm and "battery-operated backup pump" as a preventive measure against the high ...
A basement wall is thus one kind of retaining wall; however, the term usually refers to a cantilever retaining wall, which is a freestanding structure without lateral support at its top. [2] These are cantilevered from a footing and rise above the grade on one side to retain a higher level grade on the opposite side.
The first expanded polystyrene ICF Wall forms were developed in the late 1960s with the expiration of the original patent and the advent of modern foam plastics by BASF. [citation needed] Canadian contractor Werner Gregori filed the first patent for a foam concrete form in 1966 with a block "measuring 16 inches high by 48 inches long with a tongue-and-groove interlock, metal ties, and a waffle ...
Twenty-two attorneys general urged a federal court Wednesday to reject a proposed $10.3 billion settlement over contamination of U.S. public drinking water systems with potentially dangerous ...
The Target Light System, built by 3M at Target headquarters in Minneapolis [72] 3M's Pollution Prevention Pays (3P) program was established in 1975. The program initially focused on pollution reduction at the plant level and was expanded to promote recycling and reduce waste across all divisions in 1989.
PAUL, Minn.--(BUSINESS WIRE)-- 3M today introduced a new product designed using the latest technology in wall repair, making it possible to paint without priming when patching a wall. 3M™ Patch ...
Chemical manufacturer 3M Co. will pay at least $10.3 billion to settle lawsuits over contamination of many U.S. public drinking water systems with potentially harmful compounds used in ...
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