Final Exam Part 2
Chapter 9: Finishes
- 1.Plaster of Paris is..
- A.
A mixture of portland cement and water
- B.
A compound of silica and calcium sulfate
- C.
Relatively pure calcined gypsum
- D.
Vitrified sodium sulfate
- 2.What is released into the atmosphere when gypsum is heated?
- A.
Oxygen
- B.
Carbon dioxide
- C.
Water
- D.
Carbon monoxide
- 3.What is the key benefit of using gypsum products in construction?
- A.
It provides fire protection
- B.
It provides structural stability
- C.
It provides protection from corrosion and decay
- D.
It provides security against vandalism
- 4.What is the role of aggregates in plaster?
- A.
To provide weight
- B.
To increase workability
- C.
To increase water tightness
- D.
To provide dimensional stability
- 5.Which substance is added to finish coat plasters to improve workability?
- A.
Lime
- B.
Aggregate
- C.
Calcium chloride
- D.
Resin
- 6.What is the principle cementitious ingredient in stucco?
- A.
Gypsum
- B.
Portland cement
- C.
Acrylic
- D.
Lime
- 7.Vermiculite is...
- A.
An agent which retards the setting of plaster
- B.
A light weight aggregate for plaster
- C.
An agent which speeds the setting of plaster
- D.
An additive designed to increase the workability of plaster
- 8.Which product(s) cannot be applied directly to gypsum plaster, gypsum masonry, or gypsum lath?
- A.
Gypsum plaster cannot be applied to these bases
- B.
Portland cement plaster cannot be applied directly to these bases
- C.
Neither gypsum plaster nor portland cement plaster can be applied directly to these bases
- D.
Neither gypsum plaster nor portland cement plaster are restricted from direct application to these bases
- 9.What restriction applied when plaster is to be applied directly to concrete surface?
- A.
The surface of the concrete should not be sandblasted
- B.
Rough lumber should not be used as forms for the concrete
- C.
Form release oil should not be used on the formwork
- D.
Muriatic acid should not be applied to the concrete
- 10.Identify the coats of three-coat plaster work as applied to metal lath.
- A.
Dash coat, gray coat, finish coat
- B.
Scratch coat, gray coat, white coat
- C.
Scratch coat, brown coat, finish coat
- D.
Dash coat, brown coat, finish coat
- 11.Which adjustments are allowed to a mix of portland cement plaster within three and one-half hours of the initial mixing?
- A.
Retempering with additional water
- B.
Remixing to restore plasticity
- C.
Both retempering and remixing
- D.
Neither retempering nor remixing
- 12.Rich mixes of plaster, high in cement content, generally result in plaster with...
- A.
Lower strength
- B.
Greater economy
- C.
Lower initial shrinkage
- D.
Higher intital shrinkage
- 13.Portland cement plaster should be applied over a level base in a uniform thickness..
- A.
To achieve greater economy
- B.
To reduce cracking
- C.
To improve its appearance
- D.
To increase speed
- 14.Type X wallboard is...
- A.
Water-resistant
- B.
Sound-resistant
- C.
Impact-resistant
- D.
Fire resistant
- 15.The core of water-resistant wall board is formulated with what type of additives?
- A.
Asphaltic
- B.
Acrylic
- C.
Portland cement
- D.
Aluminum oxide
- 16.The type of gypsum board is perforated is...
- A.
Backing board
- B.
Sheathing
- C.
Lath
- D.
Formboard
- 17.Regarding the attachment of gypsum board to wood members, staples are recommended only for attaching...
- A.
Fire-resistant board
- B.
The base ply in multi-ply construction
- C.
Predecorated board
- D.
Tapered board on the long dimension
- 18.Identify the disadvantage of contact adhesive for installing gypsum board.
- A.
Inability to bridge irregularities
- B.
Cannot be used to bond wallboard to metal studs in demountable partitions
- C.
Lacks significant long term strength
- D.
Does not provide immediate bond
- 19.What is the minimum temperature at which gypsum board should be installed?
- A.
35 degrees F
- B.
45 degrees F
- C.
55 degrees F
- D.
65 degrees
- 20.Which surface of a space should first be clad with gypsum board first?
- A.
Walls
- B.
Ceilings
- C.
Walls and ceiling should be clad simultaneously beginning at one end of the space and progressing toward the other
- D.
Neither walls nor the ceiling are recommended to be clad first
- 21.Caulking is recommended around the edges of partitions between apartment to...
- A.
Reduce sound transmission
- B.
Reduce the heat loss
- C.
Increase the fire rating of the partition
- D.
Reduce the need for trim
- 22.In which circumstance can foill-backed gypsum board be used?
- A.
As the backing for ceramic tile
- B.
As the face ply in laminated two-ply construction
- C.
Adjacent to a dead air space
- D.
For laminating directly to masonry or concrete
- 23.Where can gypsum board be used in exterior locations (if any)?
- A.
As fascia boards
- B.
On soffits
- C.
On rake trim
- D.
Gypsum board cannot be used in the exterior
- 24.In which location is water-resistant gypsum board recommended for use?
- A.
Shower room walls
- B.
Shower room ceilings
- C.
Sauna walls
- D.
As a base for wall tile in tub-shower areas
- 25.Partitions utilizing gypsum board..
- A.
Can be made entirely of gypsum board except for metal runners at the floor and ceiling
- B.
Required wood or metal framing for support
- C.
Cannot be assembled with a masonry substrate
- D.
Require threaded fasteners
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