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Certification Manual

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Figure

: Types of Construc

tion Materials

Chapter 2: Construction Considerations

and Techniques

Structural Considerations

When running wire and installing components, structural

considerations must be taken into account. Does the facility have a flat

roof or a pitched roof? Does it have an attic with ample room? Does it

have suspended ceilings? If so, is it an air plenum? If not, is there room to

conceal the device boxes what type of wall construction is it? Brick or

concrete? Wood or steel studs? The answers to these questions will

determine how you pull your wire, what kind of wire is needed, what kinds

of wall boxes to use and whether or not you can run wire inside the wall or

have to use external chases such as “wiremold” or “panduit.” Other

factors include firewalls and smoke walls. While smoke walls are almost

exclusively found in attics,

firewalls can be both above

and below the ceiling. In fact,

hallway walls are considered

firewalls. Special

consideration needs to be

taken penetrating a firewall

when pulling wire in an attic

or suspended ceiling. Any

penetration must be caulked

with fire-stop caulk after the

pull is finished. This helps

prevent fire from transferring

from one section of the

building to another if a fire should occur. This is very important in our

installations.

Material Product Uses

Lumber Wood & Wood

Products

Studs, Floors,

Decking,

Rafters, Doors

Gypsum Sheetrock, Plaster Wall Finishing

Masonry Brick, Concrete

Block and Cement

Floors, Interior

and Exterior

Walls, Ceilings

Metal Light and Heavy

Gauge Steel

Light to Medium

Gauge Aluminum

Headers, Studs

and Exteriors

Doors and

Windows

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 113 114

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