Podcast
Questions and Answers
What is the primary concern when using metal studs in drywall construction?
What is the primary concern when using metal studs in drywall construction?
- Ensuring the aesthetic appeal of the wall finish
- Minimizing the weight of the partition
- Preventing noise from leaking through the walls
- Preventing flames from reaching the studs or supports (correct)
Which factor does NOT influence the effectiveness of a sound-control partition?
Which factor does NOT influence the effectiveness of a sound-control partition?
- The amount of sound absorbed by the partition
- The level of noise on the other side
- The amount of noise in the area
- The size of the partition (correct)
How much can a 1-inch squared hole reduce the sound-blocking ability of a 100 square-foot wall?
How much can a 1-inch squared hole reduce the sound-blocking ability of a 100 square-foot wall?
- Approximately 10 decibels
- Approximately 5 decibels
- Approximately 28 decibels (correct)
- Approximately 50 decibels
What additional feature can lower sound transmission through a door?
What additional feature can lower sound transmission through a door?
What is the first step in building a metal partition on the floor?
What is the first step in building a metal partition on the floor?
Flashcards
Metal partition assembly
Metal partition assembly
The process of constructing a metal partition by first assembling it on the floor, then raising and securing it to adjacent walls, and finally making adjustments for plumbness and fastening the floor track.
Sound control in partitions
Sound control in partitions
Preventing sounds from passing through a wall by using materials and construction methods that absorb or block sound waves.
Sound transmission
Sound transmission
The amount of sound that is allowed to pass through a partition, measured in decibels. Lower decibel levels indicate better sound control.
Noise leak
Noise leak
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Sound isolation by doors
Sound isolation by doors
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Study Notes
Wallboard Application
- Horizontal wallboard: Screws spaced no more than 12 inches apart in the field and along abutting joints.
- Vertical wallboard (fire rating): Screws spaced at 12 inches in the field and 8 inches along vertical abutting edges (2-hour fire rating).
- Fastening: Fasten wallboard to floor and ceiling track with one screw midway between vertical stud flange.
- Screw heads: Should slightly depress the wallboard surface.
- Placement from edges/ends: Screws should be driven at least 2 inches from edges/ends.
- Corner beading/trim: Easily applied using electrical screw guns and appropriate fasteners.
- Ceilings: Studs used as joints on top of track, at 24-inch intervals. Provide backing at the plate line. Wallboard applied on joists with drywall screws.
Metal Partition Procedure
- Building in open areas: Erecting partition on the floor before raising it to ceiling.
- Assembling procedure:
- Complete wall assembling on floor.
- Raise, position, fasten to intersecting/abutting walls.
- Plumb doors & walls, fasten floor track.
Selection of Metal-Stud Partitions for Sound and Fire Control
- Sound Control: Careful selection of well-tested partitions important.
- Preventing flames from reaching studs: Primary design concern for fire control.
- Factor variables (fire protection): Type of wallboard & number of layers needed to maintain a fire for a pre-determined length of time.
Control of Sound
- Assessing Sound Control Function: Factors include area noise level, other side's noise level, and absorption loss during transmission.
- Noise leaks/vibrations: Can compromise control planning (tiny openings can significantly reduce sound blocking).
- Sound reduction through doors: An ordinary slab door reduces sound transmission by about 10 decibels; even more so when weather stripping is added.
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