Misc - PPD Flashcards
“M” (Mortar Type)
strongest, below grade, high loads, severe frost, not workable
“S” (Mortar Type)
exterior reinforced masonry, seismic loads
“N” (Mortar Type)
general purpose
“O” (Mortar Type)
low strength, interior or non load bearing walls
“K” (Mortar Type)
very low strength and no longer used
Should mortar be weaker than brick?
Yes
What is the average mortar height?
3/8” (ranges from 1/4” - 1/2”)
FBS (Facing Brick)
- most common appearance grade, some chips, similar dimensions
- fbStandard
FBX (Facing Brick)
- less chips, more uniform
- fbeXactly the same”
FBA (Facing Brick)
-more chipping
SW (brick)
“snow brick”
hardiest
MW (brick)
“Miami brick”
middle range
NW (brick)
“iNterior brick”
weakest
N (hydrated lime)
normal
S (hydrated lime)
special - more water content so more work-ability, more $$
Type I (Portland Cement)
-most commonly used, “normal”
Type IA (Portland Cement)
- air entrained
- most commonly used, “normal”
Type II (Portland Cement)
- concrete with moderate resistance to sulfites
- used at ground where water has sulfites
- generates less hear so good for warm weather climates
Type IIA (Portland Cement)
- air entrained
- concrete with moderate resistance to sulfites
- used at ground where water has sulfites
- generates less hear so good for warm weather climates
Type III (Portland Cement)
- high early strength
- used for pre-cast cold weather construction
Type IIIA (Portland Cement)
- air entrained
- high early strength
- used for pre-cast cold weather construction
Type IV (Portland Cement)
- low heat of hydration
- used for dams and other large structures
Type IVA (Portland Cement)
- air entrained
- low heat of hydration
- used for dams and other large structures
Type V (Portland Cement)
- High sulfite resistance
- There is no Type VA!
What s is air entrained concrete?
- Tiny bubbles are added to concrete allowing water inside the concrete to freeze without inducing large internal stresses
- has freeze thaw resistance
Silicone (Sealant/Caulk)
- used in bathrooms, high moisture conditions (doesn’t work on wood/gyp.)
- excellent durability
Butyl Caulk (Sealant/Caulk)
- lower water vapor permeability, BEST water sealant
- also called polyisobutylene
Polysulfide (Sealant/Caulk)
- prolonged immersion in water
- best chemical resistance
Polyurethane (Sealant/Caulk)
- gutters, moisture and corrosion resistance, flexible
- high abrasion resistance
Screeding
done with 2x4 wood member
Darbying/Floating
follows screeding and done by hand, float to smooth surface
Troweling
Smoothest finish
TPO (Flat Roofing Material)
- thermoplastic
- seams can be heat fused (like PVC) which is an advantage when compared to EPDM
- more flexible than PVC (but not EDPM)
- more economical than PVC
- combines advantages of PVC and EDPM
R-value of an insulated glass unit with single air space?
2
R-value of monolithic tinted glass
1
R-value of insulated low-e glass w/ single air space
3
R-value of argon filled insulated low-e glass
4
Hot Water Pipes
CPVC and PB
Cold Water Pipes
PB, DE, PVC, CPVC
Graffiti Resistance
- urethane based coating
- acrylic coatings
- RTV silicone rubber coating
Wall Thickness of Plumbing Walls
fixture on one side of wall: 12”
fixtures on both sides: 16”
Heat Strengthened Glass (HS)
- falls between annealed and tempered
- tempered is 2x stronger, but it has less spontaneous breakage
- HS stays in opening if broken, but does not split into small pieces (like safety glass)
- good when there’s a thermal concern such as spandrel all glass curtain wall
- less optical distortion
Tempered Glass
- opposite of annealed glass
- 4x stronger than annealed glass
- Tempering done once glass cut to size
- Tiny cubicles called “dicing” when broken
- Safety glazing
Heat Soaked Tempered Glass
- most $$ treated glass
- much safer than other options
PVC (Flat Roofing Material)
- fully adhered
- thermoplastic so can be heat fused (unlike FDPM)
- fire resistant
- better in warmer climates due to light color
EDPM (Flat Roofing Material)
- fastened in with batten bars (taped metal or plastic)
- better in colder climates
Stucco
- lighter than concrete or masonry curtain wall system
- preferred in seismic areas because it does not add extra mass to structure
- porous and breathable, allows rainwater to evaporate
- can be applied to concrete, steel or wood
- stucco over concrete is prone to mold due to lack of water drainage
- scratch and brown coats are base coats
- there are two finishes available for stucco:
1. portland cement based and 2. acrylic polymer based
Hot Rolled Steel
- rolled heat billets to required cross section
- primarily used for structural framing members
Cold Rolled Steel
- Required shape achieved by bending thin steel sheets at room temperature
- Sheets are not heated before shaping
- Lightweight (“lightweight gauge steel”)
- Typical applications: roof decks, floor decks, wall studs
