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Materials and Methods of Construction exam 2 questions and answers (verified for accuracy).
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Materials and Methods of Construction exam 2 questions and answers (verified for accuracy).
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Materials and Methods ofConstruction exam 2 questions
and answers (verified for
accuracy)
Purpose for ceilings - answer 1. Acoustics
2. Accessibility
3. Light Reflectance
4. Aesthetics
5. Support for light fixtures
6. Hide ductwork, wiring, pipes and structure
2 methods of ceiling attachment - answer 1. GWB, Plaster, Metal-
can be attached to joists, rafters and concrete slabs
2. Fiberous Panels (ACT)- inlaid into and exposed or concealed grid
of light gauge metal T's suspended with metal hangers
Ceiling Types - answer - Exposed timber structure
- open grid suspended ceiling
-GWB ceiling
-Plaster Ceiling
- Vaulted Ceiling
- Cathedral Ceiling
- Tray ceiling
- Structural tile ceiling
-domed ceiling
,- coffered ceiling
- soffit
-cove lighting- up light
-cove lighting- wall wash
- painted ceiling
- tin ceiling
- specialty ceiling
-acoustical tile or panel ceiling
Specialty ceiling - answer -hides the exposed plenum
-if you look up you can see it but at eye level it Is out of view
GWB Ceilings - answer -most common
-used for hospitality and commercial design
-more expensive because more labor intensive
-reflects sounds rather than absorbs it
GWB construction sequence - answer -attach 1/4 pencil rod to
underside of deck above
-attach 1/2' cold rolled steel channel (black iron)
-attach furring channel (hat channel)
-screw GWB into furring channel
- Tape, spackle, and paint
Soffit purpose - answer Hides elements like: beams, arches, stairs
plaster ceiling construction - answer -attach 1/4" pencil rod to deck
above w/ clip angle
,-attach 1-1/2" black iron steel channel 4' O.C. to pencil rods with
friction clip
-attach 3/4" black iron grid 16" O.C. to 1-1/2" black iron with wire
- attach metal lath to 3/4" black iron
-apply coats of plaster
Vaulted ceiling construction - answer -use a plywood template to
define the curvature of the arch
-grounds located on either side of the arch and in the center
Vaulted ceiling construction - answer -use a plywood template to
define the curvature of the arch
-grounds located on either side of the arch and in the center
Veneer plaster ceiling construction - answer -4 wide gypsum
plastering base sheets having a special absorptive face (blue face)
and putting a thin layer of plaster on it
Blue face - answer A gypsum base sheet that is highly absorptive
Advantage of veneer plaster system - answer 1. More rapid
installation
2. Appearance better and less expensive than plaster
3. High resistance to cracking or abrasion failure
Ceiling better for noise reduction - answer -acoustical tile bc it has
a softer and absorptive surface for better sound control
Advantages of acoustical ceiling - answer -easy access to plenum
-used bc a quiet environment increases productivity
, -less expensive than GWB or plaster
Acoustical ceiling construction - answer -1/4" pencil rod attached
to underside of deck above
-attach 1-1/2" black iron 4' OC to pencil rods with friction clip
-suspend hanger clip to black iron
-insert tees through hanger
-secure runner to main tees
-set tees on wall angle
-install acoustical tile
Outside of NYC for acoustical ceiling.. substitute.. - answer The
hanger with just a wire
The state most strict with ceilings - answer New York
2 types of acoustical ceiling - answer -lay in/ exposed grid
-concealed spine
Lay in/exposed grid ceiling - answer -acoustical panels that are the
least expensive: panels are 2X2 or 2X4
Concealed spine ceiling - answer 12"X12" tiles attempt to mimic
plaster ceiling: more expensive than lay in
Layout options for acoustical ceiling tile - answer -centering on a
full tile on the centreline of the room
-cantering the grid on the center kind of the room
Uses for doors - answer -visual privacy
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