Exam 35: Fire Rated and Acoustical Considerations

The principles that are used to stop the flow of sound through walls also apply to the floor/ceiling assembly, and wall construction is same for floor/ceiling construction.

Sound is transmitted by __________ in any material: solid, liquid, or gas.

Varying degrees of fire resistance can be achieved by using a second layer of fire-rated ______ on one or both sides of the wall.

A rating of _________ IIC for the floor would be the most satisfying for individuals.

Openings are rarely avoided in fire-rated walls.

To prevent vertical flame spread, stud spaces are not permitted to be more than ____ high.

An STC of 45 is achieved without clips by using 2 x 4 studs and 2 x 6 plates.

The spaces between the studs are closed off with ____ at each level.

The sound transmission classification of a wall can be improved greatly by allowing the studs to contact both surfaces.

The Town House party walls have stricter fire-resisting requirements in some places than in others.

A wall that is shared by two living units in a multifamily structure is called a ____ wall.

The measurement of the capability of a building element to reduce the passage of sound is its ____ (STC).

The most obvious way in which a wall, floor, ceiling, or roof can slow the spread of fire is by having a fire-resistant ____.

Fire-rated doors are ____ allowed to have a slightly lower rating than the walls in which they are installed.

Type ____ wallboard is a special fire-rated wallboard.

Party walls are often required to have double thicknesses of ____ on each side.

Using clips and sound-deadening fiberboard results in an STC rating of ____.

Approved fire ____ or fill must be used at all utility-line fire-rated wall penetrations.

Instead of wood firestops, the wall cavity can be blocked off with fire-resistant ____ insulation.

An STC of 45 can be increased to 49 by including ____ insulation.