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| De-humidistat
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A control mechanism used to operate a mechanical ventilation system based upon the relative humidity in the home. |
| Dead air space
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Space, isolated from circulation, which contains trapped air that creates thermal insulation |
| Dead blow hammer
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Hammer that has a hollowed head that contains lead pellets which reduces the rebound when used. |
| Dead bolt
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A lock that requires a key to open from the outside and a turn bolt from the inside, which slides into a receptacle in the doorjamb. It is also called a deadbolt lock or a dead lock. |
| Dead end
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(1) The end of a street that has no regular exit. (2) An impasse. (3) Capping off a piping system to terminate. |
| Dead end street
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Street that terminates at one end has only one outlet and is not a through street. |
| Dead flat
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Non-glossy painted area. |
| Dead level
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Refers to a roof with no slope or pitch. |
| Dead load
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(1) The burden a building structure creates on itself by virtue of its own weight as opposed to that caused by things that are not built into the building, which is called live load. Both the dead and live loads must be taken into consideration when designing a building. (2) The fixed load that would be on the structure of a crane created by the rest of the crane attachment on the bridge. |
| Dead load deflection
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Vertical deviations, which are caused by the weight and the weight of the attachments of the crane bridge. |
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