Quiz
PPD_EXAM C_120 QUESTIONS_04:15 HRS
Questions in this quiz (120)
1Stone arches usually involve specially carved trapezoidal shapes and a ________ at the center top.
- Acenter stone
- Bcorner stone
- Ckeystone
- Dhead stone
2What are the four factors that create a defensible space?
- ANatural Surveillance, Fences/walls, Locks, Milieu
- BNatural Surveillance, Boundaries, Image, Environment.
- CTerritoriality, Natural Surveillance, Environment, Milieu
- DTerritoriality, Natural Surveillance, Image, Milieu
3What is the most commonly used type of communication system within a building?
- ALAN server network
- BTelephone system
- CEmail through internet server connection
- DPA system
4In architectural terms, define style.
- AThe style in which a building is designed (i.e. Gothic, Craftsman)
- BA set of repeating and identifiable elements in a design
- CA recognizable style by a certain architect, such as Frank Gehry
- DThe style the architect is trying to evoke in the design
5When considering steel over other building materials, what should be considered? Select all that apply
- Asafety
- Bseismic design requirements
- Cclimate
- Dthe owner’s budget
- Eprice of steel
- Fplacement of mechanical equipment
- Glocation of elevator
6What should you do if you discover large quantities of organic soils on a site?
- ACompact the soil and use a stem wall foundation
- BUse a mat slab foundation to float the building on the soil
- CChoose a different site as organic soils are impossible to build on
- DRemove the soil and replace it with an appropriate fill material
7In terms of site design, what are conifers best used for?
- AAdding lush greenery to the landscape
- BBlocking wind and views
- CSeparating site uses
- DProviding shade
8Which of the following street types would have the lowest level of traffic?
- ACollector/Distributor Streets
- BLocal Streets
- CArterial Streets
- DFreeways
9Which of the following are considered the different levels of soil? Select all that apply
- ALevel C - Weathered and fractured rock with little biological activity
- BLevel B - Minerals, lies below the plants roots and supports life
- CLevel D - Solid sandstone
- DLevel A - Topsoil, essential for growth of plants and takes a long time to develop
10Per ADA, the wheelchair passage width for doors is minimum clear distance of _____when open at 90°.
- A24”
- B32”
- C48”
- D36”
11Which is a method of heat transfer? Select all that apply
- ARadiation
- BConduction
- CEnthalpy
- DConvection
- EWarm breeze
- FHumidity
- GWet Bulb
12What is a benefit of incorporating sustainable design into a building?
- AElimination of property taxes
- BLEED accreditation and awards for distinguished building status
- CHealthier indoor environment for building occupants
- DLower construction costs
13Which items are included on a topographic survey?
- AProposed site features
- BProposed topography grading
- CSite datum point
- DSlab plan dimensions
14What is the correct name and description of this housing pattern?
- AStreet Front Pattern: the homes are turned at a right angle to the street
- BCluster Development: the homes are turned at a right angle to the street
- CStreet Front Pattern: consisting of houses placed linearly along the street, the street front pattern provides straightforward access for cars and people, as well as uniform orientation
- DCluster Development: densely packed units are grouped around shared common public space
15This term refers to the assembly of individual units, often of brick or stone and with or with out mortar, into an integrated whole.
- Amasonry
- Bpile building
- Cstacking
- Dcarpentry
16Which of the following strategies would NOT reduce energy use within a building?
- AInstall solar panels
- BDecrease the amount of insulation in the walls
- COrient building to sun to control heat gain
- DUse insulated windows
17The three basic types of masonry bearing wall construction are: Select all that apply
- Acavity wall
- Bdouble wythe
- Csingle wythe
- Dcobble
- Ewet stack
- Fcorbel
- Gconsole
18What building system would benefit from the use of solar energy within a building?
- AHVAC system
- BPlumbing system
- CCommunication System
- DElectrical system
19A typical service meter measures power in what unit?
- AVolts
- BkWh: Kilowatt hours
- CJoules
- DAmps
20Which technique would NOT help reduce sound transmission between spaces in a building?
- AAdd insulation to the walls
- BStrap mechanical ducts directly to the ceiling
- CExtend walls from floor to ceiling between stories
- DAdd an air space between construction assembly members
21Brick facades should be _______ whenever the joints become compromised and no longer prevent water from entering the wall.
- Arepointed
- Bsalvaged
- Ctorn down
- Dpainted
22What are ADA showers NOT required to be equipped with:
- Aa fold-down seat
- Ba front curb or step-in that would prevent a wheelchair from rolling out of the shower
- Cgrab bars
- Da showerhead attached to a flexible supply hose
23If the Occupant Load Factor for a 9,000 sq. ft. warehouse is 300 sq. ft. per person how many exits are required?
- A3
- B1
- C4
- D2
24The main plumbing vent for a building is called the:
- Asuper vent
- Bstack vent
- CDWV
- Dplumb duct
25Which term grants you the ability to use a building for your proposed use even though the zoning code normally would not allow it?
- AGrandfather clause
- BVariance
- COrdinance
- DConditional Use Permit
26What is an Arterial street?
- AAllows large volumes of traffic to move quickly between, around, or through urban centers
- BProvide access to low intensity uses in front of them
- CServe as transitional channels between local access to a neighborhood and main roads
- DAlso known as highways, they are continuous channels that connect with freeways (at the exits)
27A site is located in a dense urban area with heavy traffic, high winds and tall buildings. What information should be gathered to design a building that directly responds to the site conditions?
- AMicroclimate information - refers to the specific local conditions of the site
- BAny pre-existing site features, such as trees and water
- CMacroclimate statistics - refers to the general climate of the overall region
- DPrevailing wind patterns on the site
28How is a material sustainably harvested?
- AA tree is cut down and re-planted
- BA tree is trimmed instead of completely cut down
- CA tree is cut down and the soil is left to rest before being replanted
- DA tree is grown using energy and water efficient technologies
29What qualities could you identify of a material based on its thermal mass?
- AIt is a material's ability to absorb heat and cold; higher thermal mass can absorb more temperature
- BIt is a material's ability to insulate a building; higher thermal mass can insulate a building better
- CIt is a material's ability to transfer heat and cold; higher thermal mass can transfer more temperature
- DIt is a material's ability to allow light and air transfer into a building; lower thermal mass allows more light and air to enter a building
30Some examples of cathodes are: Select all that apply
- Atitanium
- Bnickel
- Cgold
- Dsilver
- Emercury
- Fsteel
- Giron
31Which of the following options would produce a site surface with a relatively low albedo?
- ATurf and lawn areas
- BPaving and hardscape
- CGlass and steel
- DReflecting pools and ponds.
32Before metal ties came into use for tying the brick layers in a multi-wythe wall to each other, bricks were used in what kind of courses to span a wall’s thickness.
- ALayered
- BRowlock
- CCorbeled
- DSpanning
33Which of the following would be the typical dB level for an office conversation?
- A95dB
- B30dB
- C70dB
- D165dB
34Which of the following specialty shapes are manufactured in CMU blocks? Select all that apply
- AKeystones (top of arch)
- BJamb blocks (door jambs)
- CCorner blocks (corners)
- DBond beams (headers)
- EBase shoe
- FBullnose
- GLedger
35Hydrated lime is:
- AAn inorganic compound of calcium hydroxide that comes from burning, hydrating (slaking) and drying of limestone
- BA pozzolan
- CAnother term for wet limestone
- DA cool drink often supplied on construction sites in order for workers to stay hydrated
36What foundation would be best suited for a site that has soils with poor bearing capacity?
- AStem wall
- BDeep footings
- CPiles or caissons
- DRaised foundation
37What are evenly spaced holes or wicks (often placed in vertical mortar joints) that provide a passage for water in the wall to escape.
- ATears
- BDrips
- CExpansion joints
- DWeeps
38Arranging the furniture to foster creativity, productivity or work flow would be considered
- AInterior Design
- BRetail Design
- CErgonomics
- DSpace Planning
39What is a general size and capacity for an elevator car?
- A5'X5' with a 1,500lb capacity
- B5'X7' with a 2,500lb capacity
- C10'X12' with a 10,000lb capacity
- D10'X10' with a 5,000lb capacity
40What is the maximum slope allowed for an accessible ramp?
- A1:15
- B1:12
- C1:10
- D1:08
41What three elements should be considered when laying out the ductwork design for the mechanical system?
- ALocation of light fixtures to avoid placing ductwork above them
- BCeiling clearance space
- CEfficient layout to minimize length of duct runs
- DLocation of door openings
42The city has imposed _____________ to restrict no overnight parking of RVs on Main Street.
- Aa non-conforming use
- Ban ordinance
- Ca non-conditional use
- Da zoning amendment
43Hollow brick includes any brick between ______ solid.
- A15-25%
- B60-75%
- C20-30%
- D10-20%
44What force speeds up the process of convection and of evaporation?
- Aradiation
- Bhigh humidity
- Cair movement
- Dtemperature drop
45Select all of the typical Housing Patterns from the list.
- ACluster Development
- BEnd-On Pattern
- CCourt Pattern
- DStreet Front Pattern
- EConcentric Pattern
- FSatellite Pattern
- GRadial Pattern
46Which side of the building should windows be placed in a cold climate where ample daylight is required?
- ANorth
- BEast
- CWest
- DSouth
47What type of foundation would work best on a site with hard bedrock or gravel at the surface?
- AA typical stem wall foundation
- BA raised foundation
- CA Mat Slab foundation
- DA Pile or Caisson foundation
48What question would be asked at the beginning of a Life Cycle Analysis to determine origins of building elements?
- AWhat are the by-products of its' manufacturer?
- BHow is the material delivered and installed?
- CWhere did this material come from?
- DHow is the material maintained & operated?
49__________ Zoning is a form of single use zoning.
- AIncentive
- BPerformance
- CEuclidean
- DForm-Based
50Which is the best way to mitigate disturbance to existing trees a site?
- ARe-plant disturbed areas to other parts of the site
- BMinimize night site lighting to not disturb fauna
- CMinimize disturbance to natural site water supplies
- DDo not grade past the drip line of the tree
51What term describes the study of spatial requirements of humans and the effects of population density on behavior, communication, & social interaction?
- ATerritoriality
- BProxemics
- CPersonal Bubble
- DIntimate Distance
52What is the typical bearing capacity of compacted sand?
- A1,000 - 4,000 psf
- B2,000 - 3,000 psf
- C10,000 psf
- D3,000 - 12,000 psf
53Which type of wood frame extends its studs a full 2-stories from floor level 1 beyond floor level 2 to underside of roof?
- ABlock frame
- BPlatform frame
- CBalloon frame
- DExtended frame
54If there were registers on opposite walls of a room, ideally each has a throw that reaches ______ of the way to the center of the room.
- A2/3
- B3/4
- C1/8
- D1/4
551 Watt = ____ BTU/hr?
- A3.413 BTU/hr
- B2.156 BTU/hr
- C4.534 BTU/hr
- D6.673 BTU/hr
56During which phase are design documents reviewed and approved?
- ADesign Development Phase
- BEntitlement Phase
- CConstruction Documents Phase
- D1st Plan Check Submittal
57What is the typical voltage supply to a wall outlet in the electrical system design?
- A160 volts
- B210 volts
- C180 volts
- D120 volts
58What kind of security protection would a car alarm be considered?
- ARoom protection
- BArea protection
- CPerimeter protection
- DObject protection
59Term used to describe the concept of heat transfer by mass motion of a fluid such as air or water when heated molecules are caused to move away from the source of heat, carrying energy with it.
- Aconvection
- Bevaporation
- Csensible
- Dbridging
60What is considered the "comfort zone" in terms of temperature and humidity?
- A70-85 degrees in the winter and 60-68 degrees in the summer; 80-85% relative humidity
- B60-68 degrees in the winter and 70-85 degrees in the summer; 50-80% relative humidity
- C63-71 degrees in winter and 66-75 degrees in the summer; 30-60% relative humidity
- D50-61 degrees in the winter and 80-85 degrees in the summer; 40-50% relative humidity
61Which sites would be best suited for a mat slab or pile foundation? Select all that apply
- AA site near a body of water
- BA steep site
- CA site with a high water table
- DA flat site
62What is the term used by Kevin Lynch to describe how people react to urban areas in his book "The Image of the City"?
- AUrban Imageability
- BThe Neighborhood Concept
- CSuburban Imageability
- DUrban Legibility
63When specifying a mortar the architect should be careful that they spec a mortar with __________ compressive strength than the unit of masonry that it binds.
- Aa higher
- Ba lower
- Cthree times the
- Dthe same
64Which process uses a hollow, water-cooled lance that is lowered into a container of molten iron and recycled steel scrap. A stream of pure oxygen is then blown through the lance at high pressure to burn off the excess carbon impurities.
- ABlacksmithing
- BGalvanization
- CBasic Oxygen Process
- DFiring
65What have largely replaced single- and multi-wythe solid walls as building envelopes in order to better resist moisture penetration and limit heat transfer.
- AAdobe walls
- BCurtain walls
- CCavity walls
- DStrawbale walls
66Why is it important to determine the level of the water table on a site and what building elements could be affected by the location of the water table?
- ATo know the measurement of a site's ability to absorb water; this will be important in determining how much hardscape should be provided on the site
- BTo know how much water can be added to a local storm sewer after heavy rains; this will affect the location of storm laterals into the building
- CTo know the quantity of water the site can hold before flooding; this will affect waterproofing of the building
- DTo know the level of water below the surface of the ground; this will affect the selection and design of the building foundation
67An overflow of electricity is called a_____. When two hot wires are unintentionally connected it is called a _____.
- Asurge, short circuit
- Barc, trip
- Ctrip, surge
- Dshock, arc
68A rafter with a notched top plate is called?
- Apig tail
- Bbird-mouthed
- Cgusset
- Drafter tail
69What is the advantage to using indigenous materials in a building?
- AThey may be required per local historical building codes
- BThey are more sustainable than new construction
- CThey may have cultural importance to the community
- DThey are local and readily available
70A ____________ Easement is ______________?
- AConservation; used when it is required for two private owners to use a strip of land between two houses which has a property line running in the center
- BJoint; used for public good. As in the case where required for a street, highway, railroad right of way or for a telephone or electric power line
- CUtility; used in row housing, when a common or party wall is shared by two adjacent owners
- DCondemnation; used for public good. As in the case where required for a street, highway, railroad right of way or for a telephone or electric power line
71In___________ terms, what is the purpose of building setbacks?
- AZoning Code; to allow access to light and air
- BBuilding Code; to keep buildings separated from one another
- CBuilding Code; to control the maximum size of a building on a site
- DZoning Code; to allow green space between buildings
72HVAC capacity is measured in:
- Apounds
- Btons
- Cvolume
- Dair changes per hour
73Which cost analysis process considers ways in which alternative design solutions can be implemented that will provide the highest level of performance and safety in combination with the lowest life cycle costs.
- ASix Sigma
- BLean Thinking
- CBroad Stroke
- DValue Engineering
74How can you mask unwanted noise in a building?
- ACompletely seal the building so that no noise is transmitted between spaces
- BPlay a low pitched tone to drown out the unwanted noise
- CPlay a high pitched tone to drown out the unwanted noise
- DProvide white noise to blur unwanted sounds together
75Which of the following are methods to incorporate passive cooling into a building? Select all that apply
- AArrange windows to encourage wind flow through the space and allow ample ventilation
- BSeal all leaks in the building and provide a very efficient duct system
- CUtilize the "stack effect" to vent heat up and out of a space and allow cool air to enter below
- DIncorporate louvers and overhangs on windows to block direct sunlight
- EInstall oversized HVAC equipment
- FInstall energy efficient lighting
- GUse low VOC paints
76Which fire detection system is most commonly used in buildings?
- ACombination heat and humidity detectors
- BSmoke detectors
- CCombination smoke and flame detectors
- DIonization detectors
77What is the difference between Net Density and Gross Density?
- ANet Density does not include streets while Gross Density includes everything such as streets, open spaces, and parks
- BNet Density is the best way to describe the density of a site
- CNet Density includes streets while Gross Density does not
- DNet Density and Gross Density essentially describe the same thing
78Which soil type tends to swell when frozen?
- AClay - plastic when wet, stiff when dry
- BSand - drains well, good foundation when graded
- CGravel - drains well, able to bear loads
- DSilt - stable when dry or damp, not wet.
79John is in the process of selling his home to Anne. Anne needs to close the deal in 7 days. John agrees to close the deal in 7 days, but he won't be able to move for another 60 days. The best strategy for John and Anne to implement would be a _________________.
- ASale-and-leaseback
- BCooperative transfer of Ownership
- CCondominium transfer of rights
- DFee simple or Fee absolute
80What density is required in order to support a public transit system?
- A10 persons per acre
- B30 persons per acre
- C50 persons per acre
- D100 persons per acre
81In a general sense, what is the main purpose of building codes?
- ATo limit the number of construction projects taking place at the same time
- BTo maintain a cohesive aesthetic among buildings within a city
- CTo protect the health, safety and welfare of the public.
- DTo enforce the future vision for a city or region
82Electrical lines are called ‘cables’ when the cross section is ____ AWG or larger.
- A3 AWG
- B4 0000
- C10 AWG
- D6 AWG
83The square footage of the site is 10,000 s.f. An FAR of 2:1 is allowed for this property. What is the maximum building square footage allowed on this site?
- A20,000 s.f.
- B75000 s.f.
- C10,000 s.f.
- D5,000 s.f.
84What is AHU an abbreviation for?
- AAssociation of Heating Unions
- BAir Handling Unit
- CAir Heating Unit
- DAir Humidity Unification
85Which foundation would likely be the most expensive?
- ABelled Caissons
- BDriven Piles
- CStem Wall
- DMat Slab
86Steel cages that are filled with natural stone or rubble and that can be stacked and tied together to bear structural loads or used as retaining walls are called:
- AGallows
- BStone bricks
- CRock bales
- DGabions
87Which of the following is NOT a ramp and walkway requirement per ADA guidelines?
- AMinimum width required for two wheelchairs to pass each other is 50 inches, so public walkways should be minimum 6 feet wide
- BRamps shall not be steeper than 1:12 (8.3%) slope.
- CFlared sides of curb ramps shall be 1:10 maximum slope
- DWalkways should have a maximum gradient of 5 percent (1:20), and maximum cross gradient of 2 percent (1:50)
88Which choice best describes a Planned Unit Development?
- ASmall in scale; uses only one occupancy type; completed as one entire project
- BAllows for private use; usually a cheaper development option due to high density; generally has a very short construction schedule
- CLarge in scale; utilizes mixed use of occupancies; completed in phases over an extended schedule
- DAll units are identical in floor plan; generally uses a small piece of land; very expensive due to higher density
89Which department would perform plan check first in the building permit approval process?
- ADesign Review Board
- BFire Protection
- CBuilding and Safety
- DPlanning Department
90A, U, S, or J shaped pipe that is located below or within a plumbing fixture is known as a:
- Asweep
- Btrap
- Ctee
- Dcleanout
91What is a percolation test and when would it be used?
- AA test used to evaluate the rate at which soil will absorb water on a site; necessary for septic draining or leach fields
- BA test used to evaluate the rate at which building materials absorb water; necessary in very humid climates
- CA test used to determine the rate at which water drains from a site; necessary on steeply sloping sites
- DA test used to calculate the maximum density that is required for the soil on a site; necessary when soil samples are poor
92Which of the following is a written agreement that put specific limitations or restrictions on a property?
- ADeed of Trust
- BCooperative
- CCovenant
- DEasement
93What is a continuous wall from the foundation through the roof that separates the building into different construction types?
- AFire Partition
- BSmoke Barrier
- CFire Wall
- DFire Barrier
94This type of pipe fitting is most susceptible to damage from water hammer effect?
- Adrip tape
- BPEX tubing
- Ciron pipes
- Dcopper pipe fittings
95A detail that is often used on the front face of a stone coping or a window sill that prevents water from draining down the face of a building is called a:
- Adrip edge
- Bkeystone
- Cwash
- Dcap
96A building's degree of fire resistance _______.
- Ais influenced by the building's height
- Bdetermines the building's intended use
- Cclassifies the type of construction
- Dis proportional to the building's floor area ratio
97Which of the following is an Incidental Accessory Area?
- AThe jury assembly room in a courthouse
- BA private office research laboratory
- CA print room in a large office building
- DA medical gas storage room in a regional hospital
98How does a variance affect the zoning code applicable to a particular site?
- AA variance does not affect the zoning code requirements; it is part of building and safety
- BA variance overrides the local zoning codes so that a building does not need to comply
- CA variance makes the site much more expensive to get a permit for construction
- DA variance is a request to deviate from some of the requirements of zoning (maximum height, minimum setbacks, etc.), because complying with these requirements would create financial hardship or practical construction challenges
99What type of development requires the infrastructure to be more spread out, is often less efficient and therefore more expensive?
- ALow Density
- BZero Density
- CHigh Density
- DMixed Density
100Heat gain or loss when air moves through cracks or gaps in a building assembly is called:
- Acreep
- Binfiltration
- Cseepage
- Dpermeance
101Which of the following describes the ratio of a Golden Section?
- Aa/b = a+b/b
- Bb/a = a+b/a
- Cb/a = a+a/b
- Da/b = a+b/a
102What is the Occupant Load in a building?
- AThe number of persons who occupy the building during peak hours of operation
- BThe total number of persons that might occupy a building
- CThe number of persons per business in a building
- DThe number of persons per floor of a building.
103What are two key types of lateral loads to become familiar with?
- AGravity and dynamic loads
- BSeismic and wind loads
- CEnvironmental loads
- DLive and dead loads
104The City of Santa Monica, California has implemented a new Zoning Code. What topic(s) does the Zoning Code regulate?
- ANumber of restrooms required in building
- BConstruction Type
- CAny required setbacks from property lines, rights-of-way, streets and sidewalks
- DvEnclosed stairways as a means of egress
105Alloys are a combination of pure metals to give greater ______ or resistance to corrosion.
- Awater proofing
- Bflexibility
- Cshine
- Dstrength
106Meridians are ______________.
- ALatitudinal lines North of the equator
- BLongitudinal lines South of the equator
- CLongitudinal lines running North – South
- DLatitudinal lines running East – West
107Other than providing electricity, what other use of solar energy is the most efficient in a building
- AProviding heat for a water heater
- BSolar panels for electricity is the best use of solar energy
- CProviding electricity to transfer back to the main grid
- DProviding heat during the winter
108This type of is brick used to line fireplaces or other locations where direct contact with fire was expected.
- AStove brick
- BKiln brick
- CFire brick
- DHearth brick
109This map is a case study for which city?
- ALondon
- BParis
- CNew York City
- DWashington D.C.
110What are used to distribute air from above and can take on a variety of shapes?
- Aacoustic tiles
- Bdiffusers
- Cskylights
- Dfins
111What is the dimension that would result if the same mass of concrete in a block were recast without voids.
- ATrue thickness
- BEquivalent thickness
- C10”
- D3”
112Why would thermal mass be used in a building during the winter?
- ATo keep the building cool.
- BTo hold heat within a building.
- CTo reduce the energy consumption of the building
- DThermal mass is traditionally only used during the summer
113Mass will absorb heat during hot periods (especially if the sun directly radiates on it) and then slowly re-radiates that heat energy back into a space during the evening and night as outdoor temperatures drop. This is the concept of:
- AConvection
- BRadiation
- CThermal Mass
- DThermal coupling
114Which of the following are typical design criteria for accessible parking? Select all that apply
- AMinimum number of required stalls is 10; increases in lots larger than 50 standard stalls
- BHandicapped parking stalls must have a 5 feet access aisle between every two spaces
- CStalls to be located near building entrance and provided with an accessible path to the building
- DParking stalls to be 9' x 18' minimum.
115This process uses a dry powder to electro-statically apply a finish to a metal part. That part is then cured under 200 degrees Fahrenheit, which gives the protected metal a consistent and aesthetically pleasing appearance.
- Apowder coating
- Bpowder fusing
- Ccasting
- Delectra painting
116Which of the following describes a future cost?
- ACost to the owner to sell the project once it is complete.
- BBuilding costs typically including funding the land and consequent reallocation costs, construction and related fees.
- CCost related to a building operation, including but not limited to replacement, maintenance, modifications, or renovation.
- D"These costs serve the function of the building - including security, materials, and staff. Costs due to construction include temporary space and loss of use
117What is a continuous vertical or horizontal shield with a minimum fire-resistant rating of 1 hour?
- AFire Partition
- BFire Barrier
- CFire Wall
- DSmoke Barrier
118Stair handrails must be _____ above tread nosing.
- A42-46”
- B38-42”
- C24-32”
- D34-38”
119Building codes are designed to: Select all that apply
- Aprotect health of occupants
- Bprotect building owners
- Cprotect welfare of occupants
- Dprotect safety of occupants
- Eprotect health of architects
- Fprotect safety of owner
- Gprotect personal spaces of occupants
120If a two-story, non-sprinklered building has a diagonal length of 200' how far apart should the exit stairs be located?
- A100'
- B75'
- C50'
- D150'
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