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_________ ___________consists of a gypsum core sandwiched between heavy paper or other materials. It is connomly available in 4ft wide sheets of 8,10,12, and 14ft. |
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| GA-214-CCD, Recommended Levels of Gypsum Board Fininsh |
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| The types of finishes on gypsum wall board have been standardized by the Gypsum Association and published in ____________,R________ L______ of G________ B______ F_______. The levels provide a way to specify the exact requirements for any project. |
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| Glass-Reinforced Gypsum (GRG) |
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Definition
The term ______-________ _______ refers to a broad class of products manufactured from high-strength, high-density gypsum reinforced with continuous-filament glass fibers or chopped glass fibers. These types of products are used for decorative elements, such as covers, arches, confered ceilings, ornate moldings, light troughs, and trim. They are premanufactured products made by pouring (____) into molds. |
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| ________ is a finish material made from various types of cementing compounds, fine aggregate, and water. ________ is made from gypsum, lime, water and aggregates. |
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- The first is the traditional method using metal lath that is attached to wood or metal studs and serves as the base for plaster
- The other method of plastering uses gypsum board lath instead of metal lath. This is a special gypsum product specifically designed for plastering.
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| What are the two common types of plaster construction? |
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Definition
| _________ _________ consist of a system of individula components that can be quickly assembled, disassembled, and reused with nearly total salvageability. |
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A) When a fire rating over 90 minutes and high security and durability are required Option B is incorrect because a solid-core wood door is a steel frame could be used to meet the conditions. Option C is incorrect because a smoke-proof opening can be achieved with a wood door as well as with a hollow metal door |
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Definition
Under what conditions would a 1/34" (44.4) thick hollow metal door be used? A) When a fire rating over 90 minutes and high security and durability are requrired B) When a fire rating over 1 hour is required or steel frame is necessary C) When the door opening is expected to receive heavy use and a smoke-proof opening is required D) When the door will receive minimal maintenance under heavy use |
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Definition
| ______ ________: This type of operating hardware is used where requiered by the building code for safe egress by large number of people. Push bars extending across the width of the door operates vertical rodes that disengage latches at the top and bottom. |
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| ______: Are devices that automatically return a door to its closed position after it is opened. They also control the distance a door can be opened and thereby protect the door and surronding construction from damage. |
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Definition
| ______ _____: are used along the edges of doors to provide tight seals against smoke, light, and sound. Different types of neoprene, felt, metal, polyurethane, and vinyl are available in many configurations. |
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