Interior Material and Assemblies Flashcards
Gypsum Wallboard and Partitions panel sizes:
4’wide x 8’, 10’ or 12’ tall
Gypsum Wallboard and Partitions thicknesses
¼” = used for curved surfaces or new finishes over old surfaces ⅜” = double layer or over finished walls in a remodel ⅝” = typical ¾” = 2-hr rated
7 Varieties of GWB:
- Type-x
- Foiled-back = vapor barrier
- Backing board = tile base
- Water-resistant = moist conditions
- Abuse-resistant = high traffic
- Mold-resistant
- Predecorated with vinyl wall covering
Metal stud sizes:
1 ⅝”, 2 ½”, 3 ⅝”, 4”, 6”
Wallboard trim:
when is it required?
4 types?
= required when the edges are not otherwise protected
- LC bead = shaped like an L, requires finishing with joint compound
- L bead = edge trim without the back leg, requires finishing with joint compound
- K bead = used with a kerfed jamb,requires finish with joint compound
- U bead = U-shaped, has noticeable edge and does NOT require finishing with joint compound
NRC =
Min NRC =
noise reduction coefficient
0.85 for offices and other spaces where noise control is a concern
SRA =
speech range absorption. Similar to NRC, but tested at sound levels closer to human speech
Ceiling attenuation class (CAC) =
measures transmission loss through ceiling tiles between two closed rooms when there is no separation above the ceiling tiles
What are 3 types of Suspended acoustic tiles systems
- Lay-in system or standard T-bar = least expensive
Least expensive tile size = 24x24”. Costs go up with 24”x48” or 20”x60” tiles. - Tegular tile = more expensive that T-bar
- Concealed grid = even more expensive
4 seismic risk categories defined by the IBC:
I = miscellaneous structures (ie minor storage facilities) II = standard occupancy structure (ie. small office buildings, retail stores) III = hazardous structures IV = essential structures (ie. hospitals, fire stations, and power-generating stations)
6 seismic design categories:
A = least restrictive, requires no special design details B = requires no special design details C = sim to D, E, F, but less stringent D E = requires ceiling detailing
5 soil classifications for seismic design:
A = hard rock B = rock C = very dense soil and soft rock D = stiff soil E = soft soil F = special soil
How must a ceiling be designed in structures in D, E, and F seismic design categories?
For structures in D, E, and F seismic design categories, the ceiling cannot be used to provide lateral support for partitions
Instead, partitions must be braced with vertical and diagonal wire bracing and a diagonal partition bracing that is independent of ceiling grid bracing
How must a ceiling be designed in structures in C seismic design categories?
For structures in C seismic design category, partitions may attach to the ceiling grid IF the ceiling is braced to move laterally. This means the ceiling cannot be attached to the perimeter, but instead rigidly braced and clipped to the floor/roof above with a gap around the perimeter that provides the space to move laterally.
2 types of Tile =
standard sizes?
- Quarry tile = more durable and water resistant, good for floors
Standard sizes = 3x3, 4x4, 6x6, 8x8, 8x4, 6x3 - Ceramic tile
Standard sizes = 1x1, 2x2, 4x4, 6x4, 6x6
2 methods of tile installation:
- Full mortar bed = traditional
1.25” layer of portland cement with reinforcing tops either wood framing or concrete
Tile is set into this bed
Used with wood framing or concrete
Good where deflection is expected
Can even out minor variations in floor level - Thinset
Tile with a thin coating of mortar is laid on a substrate of cementitious panels nailed to the subfloor
Used in wood framing
Advantages of Terrazzo over tile
tbd?
4 types of terrazzo
Standard terrazzo (small chips) Venetian terrazzo (larger chips) Palladian terrazzo (fractured slabs of marble) Rustic terrazzo (exposed chips)
4 installation terrazzo methods:
- Sand cushion = best way to avoid cracking since terrazzo is independent from structural slab
Terrazzo tops a reinforced underbed with a layer of sand directly on the structural slab - Monolithic = terrazzo is directly laid onto the structural slab. Needs control joints.
Best used when floor thickness is an issue - Bonded = use when floor movement or deflection is not expected
Terrazzo tops an underbed that is bonded directly to the concrete slab - Thinset = thin layer of terrazzo directly laid onto structural slab
Best used when floor thickness is an issue
Is terrazzo available in precast floor tiles? How to install?
Yes Terrazzo is also available in precast floor tiles in 12 in and 16 in
Installed in cement mortar similar to stone or ceramic tile
4 basic types of wood flooring:
- Strip
- Plank
- Block
- Solid block
- Resilient floors
Strip wood flooring =
Where is it used
thin strips from 1.5” - 2.25” wide, with tongue-and-groove edges.
Used in residential and commercial applications
Plank wood flooring =
Where is it used
sim to strip flooring but wider, from 3.25” to 8”
Used primarily in residential or historic applications
Block wood flooring =
Where is it used
= preassembled wood flooring laid in two directions (ex. herringbone)
Unit block flooring = standard strip flooring assembled into a unit and held together with steel or wood splines
Laminated block flooring = made with cross-laminated wood veneer
Solid block wood flooring =
Where is it used
= solid pieces of wood laid on end with adhesive
Very durable, used for industrial or heavy-duty commercial applications
Resilient wood flooring =
Where is it used
= wood strip floors laid on a resilient system that provide extra buoyancy
Used as dance and theater floors
Relocatable wood flooring =
Where is it used
= systems of modular units that can be quickly installed and dismantled.
Good for athletic or institution floors where frequent maintenance is needed
3 Types of engineered flooring
Engineered hardwood
Laminate
Parquet
What are 2 common field finishes for hardwood floors?
Water-based urethane = durable, quick drying, low VOC
Oil-based urethane = durable, slow drying, higher VOC
2 methods for wood flooring installation over concrete:
- ¾ in. plywood subfloor base
2. 2x4 wood sleepers set into asphalt mastic
2 methods for wood flooring installation over wood framing:
¾ in plywood subfloor, can be nailed down or floating
4 types of resilient flooring
- Vinyl
- Rubber
- Linoleum
- Cork
How to prep the subfloor for resilient flooring?
Surface on which resilient flooring is to be laid must be smooth and dry
- Control joints should be filled in with a latex patching compound
- if wood framing, underlayment will help smooth out any unevenness
Seamless flooring =
mixture applied in a liquid form that cures to a hard, seamless surface
- Extremely hard, easy to clean, high resistance to water, stains, chemicals
- Use for industrial, commercial kitchens, factories, labs, hospitals, correctional facilities, parking garages
4 types of carpet
- Wool = most expensive
- Nylon = economical option, strong and wear resistant
Common for residential and commercial - Acrylic
- Polypropylene
3 ways to install carpet
- Direct glue-down = carpet glued directly to floor
- Stretch = tacked at perimeter and stretched
- Double glue-down = glues down cushion underlayment, then glues carpet to that
How is door handing determined? Left-hand door = Right-hand door = Left-hand reverse = Right-hand reverse =
from the outside
Left-hand door = hinged on left, swings away
Right-hand door = hinged on right, swings away
Left-hand reverse = hinged on left, swings toward
Right-hand reverse = hinged on right, swings toward
Sash door =
with glass lites
Louvered door =
horizontal metal slats to provide ventilation
2 common frame profiles of steel frames?
- Standard double rabbet
2. Single rabbet
3 common steel frame assembly types:
- Single = one single piece, welded together
Must be installed before the partition is framed - Knock down = jambs and head are all separate and installed on-site.
Must be installed after the partition is framed - Slip-on = jambs and head are all separate and installed on-site.
Must be installed after the partition is framed
Not available with welded corners
Steel door frames can be used with which types of slabs?
steel or wood
Aluminium door frames can be used with which types ofs slabs?
Use with aluminum or wood doors
How are steel doors finished?
painted at the factory or on site
How are aluminum doors finished?
anodized or factory coated
What is the difference between hollow and solid core wood doors?
Hollow Core = interior applications where no fire-resistance rating is required
1 ⅜ in thick
Solid Core = can be fire-rated from 20 min to 90 min
1 ¾ in thick
What are common fire ratings of wood frames? Metal frames?
Wood frames = 20-, 30-, and 45- min ratings
Metal frame = 1-hr ratings
Can revolving doors be counted as required exits or in determining total exit width?
No
Overhead coiling doors =
garage or industrial doors. Can be fire rated
Sectional overhead doors =
garage or industrial doors.
What is panic hardware? In which occupancies is panic hardware required on doors?
For occupancies over 50 in A and E panic hardware is required on doors. No levers or knobs.
Fire-protection-rated glazing =
wired glass that provides 45 min rating
- Limited to 9 sf with max dim 54 in
Fire-resistance-rated glazing =
glass that has been tested as part of a fire-resistance-rated wall assembly, provides up to 2-hr rating
- No size limitations
3 fire-rated glazing labels:
D = glazing has been tested for use in doors H = glazing meets the hose stream test T = glazing meets temperature rise requirements
2 fire-protection-rated glazing labels:
OH = glazing has been tested for fire window openings W = glazing has been tested for use as a wall and meets fire, hose, stream and temp rise requirements
Difference between finish carpentry and architectural woodwork?
Finish carpentry = done on the job site
Architectural woodwork = done in a factory
- superior quality
- mostly made from veneer
Difference between heartwood and sapwood?
Heartwood = comes from center of the tree Sapwood = comes from the tree’s perimeter
3 methods of cutting wood:
- Plain sawing = most efficient use of the log and least expensive
- Results in “cathedral” patterns - Quarter sawing = log is cut into quarters and then sawed perpendicular to the diameter
- Results in more vertical sections and stronger wood panels - Rift sawing = log is cut into quarters and then sawed radially to the center of the tree = the most waste and most expensive
- Results in even more consistent vertical grain
5 methods of cutting veneer:
- Rotary
- Plain slicing
- Quarter slicing
- Half-round
- Rift slicing
What is the rotary method of cutting wood veneer?
Rotary = log is mounted on a lathe and turned on a knife, which peels off continuous layer of exterior
- Results in very pronounced grain patterns but minimizes waste
What is the half-round method of cutting wood veneer?
Halved log and slicing slightly across annular growth rings
- Results in grain patterns somewhere between plain and quarter slicing
What is the rift slicing method of cutting wood veneer?
= quartering log and slicing at a 15 deg angle to growth rings
- Results in a straight-grain pattern
