PPD Flashcards
What is the most secure type of lockset and why?
Mortise Locks
because the mechanism is concealed within the leaf of the door
Means of egress consists of what 3 things?
exit, exit access, and exit discharge
Important considerations when designing a fire rated ceiling
hold down clips & composition of the floor/ceiling assembly
3 methods of sawing a log
plain sawing, quarter sawing, and rift sawing
Sawing method that makes the most efficient use of the log and is the least expensive
plain sawing
Sawing method that results in a grain pattern that is uniformly vertical
quarter sawing
Sawing method with the most consistent vertical grain
rift sawing
Method for controlling moisture under hydrostatic pressure
water proofing
Method for controlling moisture that is not under hydrostatic pressure
dampproofing
Water force exerted on structures
hydrostatic pressure
3 positions waterproofing can be placed
- positive side - most common; placed on the side of the element exposed to water (i.e. exterior of foundation wall) after the element is in place
- negative side - applied after element is in place to the side of the element that is not exposed to water (i.e. interior of foundation wall)
- blind side - applied before element is in place (i.e. shored excavation against which a concrete foundation wall will be poured)
4 basic types of waterproofing materials
sheet membranes
fluid applied systems
cementitious systems
bentonite systems
damp proofing coatings are always applied on the ____ side of the element
positive side (or wet side)
5 methods of dampproofing
admixtures bituminous coatings cementitious coatings membranes plastics
The most critical strategy to employ for the acoustics of an office space with a surrounding corridor
extend partitions from deck to deck and provide acoustical seals at the top and bottom of the walls
Materials that are made from plants that can be grown and harvested relatively quickly, generally within 10 years
rapidly renewable building materials
i.e. wheat board cabinetry, linoleum, bamboo paneling
Benefits of using laminated glass
acoustical control
decorative purposes
safety
security
Factors to be considered when selecting the type of glass to be used
amount of light to be transmitted the degree of transparency strength and security sound isolation insulation qualities cost availability
Types of glass
Float Glass (Annealed Glass)
Heat Strengthened Glass
Tempered Glass
Laminated Glass
Most common type of glass in the US
Float Glass/Annelaed Glass
Glass type that has twice the strength of annealed glass but is the same thickness; used where the surface is subject to solar-induced thermal stresses and cyclic wind-loading
Heat strengthened glass
Produced by subjecting annealed glass to a special heat treatment and then cooled; Four times stronger than annealed glass. Can be used in hazardous locations
Tempered Glass
Consists of two or more pieces of glass bonded together by an interlayer of resin. When broken the resin layer holds the pieces together; Used where very strong glazing is needed; Also used where sound control is desired
Laminated Glass
What type of elevator should be specified for a 40 story office building
Gearless traction
Two different types of electric elevators
gearless traction & geared traction
Elevator type only used in low rise buildings generally less than 6 stories
hydraulic
3 common types of membrane roofing
- built-up bituminous roofing
- single-ply roofing
- elastic liquid roofing
Roofing membrane type that consists of several overlapping layers of bituminous-saturated roofing felts cemented together
built-up bituminous roofing
Best single-ply roofing system type for a climate with hot summers and cold winters with extreme temperature fluctuations
loos-laid EPDM
Most common process used to disinfect water to make it potable
chlorination
Sprinkler system that admits water to the sprinkler pipes after the system detects a fire
preaction system
A photoelectric detector will warn of a fire when the fire reaches the ____ stage
smoldering stage
2 primary types of water supply systems
upfeed and downfeed
Upfeed water supply systems will work in building up to ___ ft tall
40-60 ft
Amount of pressure required to lift water through a piping system in a building
static head
equation for determining water pressure at each floor of a building
pressure at the building main - (static head x building height)
typical voltage for residential
120/240 voltage, single phase power
typical voltage for small commercial buildings
120/208 voltage, three phase power
Minimum desirable width of an elevator lobby
10 feet
HVAC system that allows for individual control of temperature, quiet operation, and minimal maintenance
variable air volume
Reflection of sound along a curved surface
creep
Rules for placing conduit and other pipes in concrete slabs
- Should always be placed in the part of the slab that is in tension
- Cover the conduit with at least 3/4” of concrete
- Outside of the diameter of the conduit should be no greater than 1/3 of the slab thickness
- Allow adequate amount of space between parallel runs of conduit (3 times the outside diameter of the largest tube)
- Pipes carrying fluids and gasses must be pressure tested prior to the placement of the concrete
Spaces intended to highlight spoken-word presentations should be ___ spaces
dead
-have short reverberation times
Musical presentations should be in ___ spaces
live
-have long reverberation times
In case of a fire, which fire protection building items can be activated by building occupants
fire extinguishers
wet standpipes
two-way communications devices
Large pipe running vertically through a building and connected to at least one hose on each floor that can be accessed by building occupants
wet standpipe
A sensor in a sprinkler head that is activated by a rise in ambient temperature indicating the presence of fire
fusible link
The most effective sound attenuation site planting strategy
plant a combination of deciduous and evergreen trees
To minimize glare, the brightness ratio between a task and its adjacent surroundings should be limited to approximately
1 : 1/3
Relationship between the illumination levels of the surfaces within a person’s field of vision
brightness ratio
Two types of glare
Direct and reflected
glare when a light source in the field of vision causes discomfort and interference with the visual task
direct glare
glare when a light source is reflected from a viewed surface into the eye
reflected glare
Which type of HVAC system occupies the most space within a building
forced air
Technology that uses a carbon dioxide sensor to increase or decrease ventilation of a space according to occupancy
demand controlled ventilation
-best used for spaces where the occupancy of the space can vary greatly at different times during the day or week and where there is not a high concentration air contaminants that need to be exhausted through a continuously operating HVAC system (i.e. bowling alley)
security that secures building entry points such as doors and windows
perimeter security
Elevator operating system that collects calls and answers the up calls on the up trip, travels to the floor level with the highest call, then collects and answers the down calls on the return trip to the floor level with the lowest call.
Selective collective operation
-works best with more than one car because cars can be making separate trips and answering calls simultaneously
Elevator operating system that is programmed based on data about building traffic patterns and analysis of the most important calls
computerized controls
Elevator operating system that answers one call at a time, delivers that passenger, and then responds to the next call
single automatic control
Elevator operating system that answers all calls without differentiating between ups and down calls
collective control
Good guideline for the initial layout of ceiling diffusers in a room is …
space them approximately the same distance apart as the room is height; Diffusers at the edge of the space should be placed about half that distance from the perimeter walls
An assembly suspended from the ceiling to prohibit movement of smoke and flame
curtain board (draft curtain)
3 types of photovoltaic cells
- crystalline
- polycrystalline
- amorphous (thin film cells)
Which type of PV cell produces the most power
crystalline
Criteria to keep in mind when planning for the location and design of mechanical rooms
- each mechanical room should have at least one exterior wall
- the boiler room should be adjacent to the chilled water plant
- ceilings in both rooms should be at least 12 feet high
How much clear space should be allowed within a plumbing wall for wall mounted toilets on each side
24 inches
How much clear space should be allowed within a plumbing wall for wall mounted toilets on one side
12 inches
How much clear space should be allowed within a plumbing wall for floor mounted toilets on each side
16 inches
____ generally demands half of the total energy consumed by an office building
Electric lighting
____ generally demands 30? of the total energy demand of an office building
Heating and cooling systems
What building type has the highest percentage of total construction cost allocated for HVAC
full service, sit down restaurant
Sound intensity levels decrease ___ dB for every doubling of distance
6 dB
Which type of glass is most appropriate for a location in the northeastern United States
low-e
because it has a low U-value, which means that it can minimize heat loss while still allowing some solar heat gain