It Gon Rain
When designing a facade for a downtown city building being exposed to high levels of acid from air pollution and acid rain, which is an appropriate stone to use?
Granite
(Limestone and marble hate acid btw)
To design a laboratory in a large city that requires concrete construction for a client that expresses interest in durability and sustainability. Would you suggest fiber-reinforced concrete or fly ash concrete?
Fly ash concrete
Adding fly ash (a by-product of coal burning) increases strength, workability, resistance to cracking, and carbon dioxide emissions
To step-down a 13,800-volt municipal power before it enters the bookstore building that is being designed you will need to find space adjacent to the building for a what?
A transformer
Transformers are needed to change the volt up or down and can be located on utility pole next to building or inside the building
What type of valve offers most control of partial flow and durability for a repeated on-off cycle for a faucet?
Globe valve
What is the actual longer dimension of a nominal 2 by 8?
21..
jk its 7.25 in
When building a boathouse in a marine climate. The building's copper roof should be affixed with what type of fasteners?
You guessed it.. copper
in wet environments, dissimilar metals in contact with each other actually precipitate metal corrosion. If you dont know, now you know
Type O mortar is used for repointing a renovated old brick bank that has been transformed into a mid-sized mixed-use building because... its softer than the brick or harder than the brick?
Softer than the brick
Because 3. pointing mortar should always be softer than the brick 1. old brick is soft brick 2. during freeze-thaw cycles, mortar expands and contracts
hardest to softest mortar type is M - S - N - O - K. AKA MaSoN wOrK
A 28,000 volt-amp transformer serves a small medical clinic. Clinic will be expanding from 20,000 sf to 25,000 sf. What will be the new power service required?
More current (amps)
Power = current x volt
watts or volt-amps = amps x volts
volts will remain constant
Which type of pipe expands more when hot water flows through it? metal or plastic?
Plastico
Designing a 14,000 sf planetarium and choosing between two roof membranes. How long must the second roof membrane last to justify the added construction cost?
Roof membrane #1: 22 year life expectancy @ $5.50 sf Roof membrane #2: @ $9.50 sf
38 years
22 * 9.50/5.50 = 38
When are roof gutter expansion joints used?
When long runs of gutter (more than 50 ft) might expand or contract excessively
Which is more expensive: wood with high-character grain or wood with low-character grain?
Wood with high-character grain costs more
higher-character grain (called “figured” wood) is more expensive
For a university campus in a cold climate that requires outdoor plaza and walkway lights with low-energy lamp and moderate-or-better color rendition, the appropriate light application would be?
LED
FYI fluorescents work poorly in cold weather, halogen and incandescent are inefficient, and low-pressure sodium offer poor color rendition
Which pipe creates less friction?
Again, plastic
What percentage of light that comes out of the fixtures, actually makes it to the desk height in the classroom?
* 2 lamps per fixture * 2500 lumens per lamp * Light loss factor = 0.60 * coefficient of utilization = 0.65 * 24 fixtures in the room * room dimensions = 20' x 30'
39%
because the CU=0.65 we are only left with 65% of our light after we account for the reflection off the room surfaces on the way down to the desk. . . And because our LLF is 0.60, we then have only 60% of what is left after adjusting for CU when we account for the light lost in the old lamp and the dirty fixture. So we are looking for 60% of 65% of the light reaching the desk . . . 0.60 * 0.65 = 0.39
What is the difference between internal and external metal roof flashing?
External is laid on top of shingles in valleys and along peaks. Internal is installed under the roof shingles.
Which better addresses uplift on the roof membrane?
An adhered membrane
A mechanically affixed membrane (screwed down)
Adhered (less opportunity for gaps to form under it).
The door is unlocked by a key outside; the outside lever is continuously locked by 24-volt AC or DC current; an electrical switch or power failure unlocks the door remotely; the inside lever automatically retracts the latch bolt for egress. What type of lock is this?
An electrically lock (fail safe)
Why separate wastewater systems into greywater (waste pipes) and blackwater (soil pipes) if the two pipe types are going to combine before they leave the building?
Soil pipes: Carry blackwater. Includes human waste and/or food waste. Pipes need to be bigger.
Waste pipes: Carry greywater. No human waste food waste. Pipes can be smaller.
Circuit A is 240 volts and 4000 watts
Circuit B ia 120 volts and 500 watts
Which circuit needs a thicker wire when W = I*V
Circuit A
Solve for "I" (amps)
Put these types of curtain walls in order from most- to least-reliable when keeping out rainwater:
Face-sealed
Pressure-equalized rainscreen
Water-managed
Pressure-equalized rainscreen
Water-managed
Face-sealed
assume that seals will leak and provide weep holes to drain components
*WILD* Would you rather.. have your dream home and have to eat tomatoes everyday like an apple OR be debt-free and have someone fart in your face every morning?
whew.. chile
What are the four conduit wall thickness classifications?
Rigid metallic conduit
Intermediate metal conduit
electric metallic tube conduit
galvanized rigid conduit
What are the copper pipe grades?
K = thickest
L = medium
M = thinnest
AKA KLM = kool look mister
The pressure in a city water main is 25 psi. What is the height above the water main, above which the water will not flow? Where 1 psi = 2.3 feet
H = 58'
H = 2.3 * 25 = 58