PDD

Question 1

Wood beam vs steel beam

Answer 1

Strength of beam shape is the ratio of how much the beam wants to smile to how much the bottom of the beam’s midpoint wants to pull apart

Section modulus = maximum bending moment/ bending stress

Bending stress of steel will always be less than bending stress of wood

Question 2

Nominal vs actual wood dimensions

Answer 2

2-6” pieces reduce by 1/2

8 “+ reduce by 3/4

Question 3

Proprietary specification

Answer 3

Identifies a single manufacturer - closed spec

Question 4

Prescriptive specification

Answer 4

Instructs the bidder, in detail, how to build the railing

Question 5

Performance specification

Answer 5

Leaves flexibility to contractor of methods, provided the railing performs properly

Question 6

Expansion joint

Answer 6

General category of full- separation joints

Question 7

Isolation joints

Answer 7

Expansion joints

Question 8

Slip joints

Answer 8

Vertical full separation joints for walls

Question 9

Construction joints

Answer 9

Full break between yesterdays concrete pour and todays

Question 10

Contraction joints

Answer 10

1/4 “saw cut - crack control

Question 11

Control joints

Answer 11

1/4” groove min for cracking

Question 12

Increase in building size means what for electrical service?

Answer 12

Typically volts can stay the same, but we need an increase in amps (wire size) to support the needs

Question 13

Steel column height

Answer 13

Typically can support 2 stories (next column is joined a few feet above floor slab )

Question 14

Shear force in beam

Answer 14

Middle of beam - shear force of a simply supported beam at the middle is almost zero, so this is a good place to disturb it if you have to

Question 15

Rim exit devices

Answer 15

Used for single door

Question 16

Panic bar

Answer 16

Required for high occ. Load

Question 17

Card reader

Answer 17

Install on lock side or outside the secured door

Question 18

Surface mounted electric strike

Answer 18

Jamb mounted- works with the rim exit device for proper latching

Question 19

Marine environment

Answer 19

Ocean spray acts as an electrolyte and can cause galvanic corrosion with aluminum and steel

Question 20

Duct attenuator

Answer 20

Reduces sound transmission through ducts

Question 21

Where does a vent go in a soil pipe that serves multiple fixtures?

Answer 21

Near the last fixture

Question 22

Direct outside air system

Answer 22

Consistently provides high indoor air quality by separating ventilation requirements from heating and cooling demands

Question 23

Elevator control - single automatic push button

Answer 23

Single family residential- handles one call at a time, providing an uninterrupted trip for each call

Question 24

Elevator control- selective collective

Answer 24

4 story lab, 4 story apartment, department store - stores all calls until they are answered and automatically reverses the direction of travel at the highest and lowest calls - most common type

Question 25

Elevator control- destination dispatch

Answer 25

High rise - optimization technique used for multi-elevator installations in which groups of passengers head to the same destinations using the same elevators, thereby reducing waiting and travel times

Question 26

Supplementary conditions

Answer 26

Where owner specific items are located In the specs. Supplements or changes the general conditions of the contract. .

Question 27

Requested alternates

Answer 27

In open proprietary specs with requested alternates, the arch can list b and c as alternates. Bidders will include both base bid (A) and prices for each alternate. No subs, allowed.

Question 28

Construction documents estimate

Answer 28

Labor and material estimates

Question 29

Passage latch

Answer 29

The latch bolt retracts by the lever on either side , doesn’t lock

Question 30

Privacy lock

Answer 30

Outside is locked by an inside thumbturn/ turning the inside over or closing the door automatically unlocks the outside lever, if you are locked out, an emergency key can open it

Question 31

Office or inner entry lock

Answer 31

A key outside or inside thumbturn locks / unlocks to the outside lever, inside lever automatically retracts latchbolt for eyres

Question 32

Classroom lock

Answer 32

A key locks/ unlocks the room from the outside, the inside lever automatically retracts the latch bolt for egress

Question 33

Classroom security lock

Answer 33

A key locks/unlocks the room from the outside and the key also locks unlocks the room from the inside, the inside lever automatically retracts the latchbolt for egress

Question 34

Electrically locked (fall safe) hardware

Answer 34

The door is unlocked by aer 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

Question 35

Electrically unlocked ( fail safe)

Answer 35

The door is unlocked by a key outside, the outside lever is continuously locked but can also be unlocked by a 24 volt AC or DC current, an electrical switch unlocks the door remotely, but in a power failure, remains locked. Inside lever automatically retracts latch bolt for egret

Question 36

Storeroom lock

Answer 36

The door is unlocked by a key outside, the outside lever is inoperative, the inside never automatically retracts latchbolt for egress

Question 37

Incidental use (code)

Answer 37

A required space that takes up less than 10% of the floor area but is more hazardous to life safety than the occupancy it is in, so it still requires fire wall separation

Question 38

Accessory use (code)

Answer 38

An additional space within an occupancy that is less hazardous and takes up less than 10% of overall floor area - check incident al use chart - no fire separation

Question 39

Types of conduit

Answer 39

RMC - rigid metallic conduct - thicker, normally threaded
IMC - intermediate metal conduit - medium thickness -threaded
EMT - electric metallic tube conduit _ thinner and sometimes called “ thin wall” - too thin to be threaded. Used for smaller branch circuits and not designed for robust connections less expensive
GRC - galvanized rigid conduit - galvanized for corrosion resistance and thick enough to be threaded

Question 40

Panic hardware

Answer 40

Allows lots of people to leave quickly when pushing against the bar on the door (no lever)required in A, E, an high hazard occupancies with an occupant load of 50 +

Question 41

Fire stopping

Answer 41

All of the systems used to seal the small gaps and maintain the fire rating of the assembly

Question 42

Fire safing

Answer 42

A type of fire stopping, it is fire-resistant mineral wool that can stuff a gap to maintain fire rating

Question 43

Bending stress

Answer 43

How much the bottom of the beam center wants to split apart

Question 44

Bending moment

Answer 44

How much the beam wants to “smile” when loaded

Question 45

Section modulus

Answer 45

How strong is the shape of the beam

Question 46

Modulus of elasticity

Answer 46

How strong is the beams material (steel, wood, reinforced concrete)

Question 47

Ground fault circuit interrupters ( G F C I )

Answer 47

’ A receptacle or breaker and switches power Off in the presence of water - outdoors, laundry, garages, crawl spaces, basements, kitchens

Question 48

Arc fault circuit interrupters ( Afci)

Answer 48

Switches the circuit off in the presence of static electricity - a billowing curtain, a nail through a wire, smashed prongs - required in residential any where there’s not a GFCI

Question 49

Variable frequency drive ( VFD )

Answer 49

When we want to control the speed of a motor I this electronic allows the motor to be more versatile than an on/off

Question 50

How wide is a corridor?

Answer 50

44” min