13 Flashcards
What would be the total vertical dimension, in inches, when using three modular brick courses and three mortar joints installed in a running bond pattern?
The answer is 8”. Modular brick is manufactured so that three courses will match a standard concrete block height of 8”.
Which of the following are contract documents comprised of?
Drawings and the project manual but not the bidding requirements.
Which of the following is a concern regarding the performance of porous asphalt concrete paving?
Disintegrates under repeated heavy traffic loads
Correct. Porous paving is not suitable for heavy traffic loads.
In construction, which type of bolt is loaded mostly in tension?
Anchor
Correct. Anchor bolts hold a building to the foundation. They counteract uplift.
Ohm’s law provides the relationship between electrical current, resistance and voltage. When applied to electrical circuits which of the following statements correctly describes the relationship between the three?
Current is directly proportional to voltage and inversely proportional to the resistance
Correct. Ohm’s Law states I = V/R where I is current in amps, V is voltage, and R is resistance.
The equation can be rewritten as V = IR where voltage is the product of current and resistance.
A 24-foot long serpentine garden wall was originally designed to be double wythe, built from standard bricks. The client would like to know the cost difference to build the wall out of decorative concrete masonry units, also of a standard size of 8” x 8” x 16”. The concrete masonry unit wall will have the same footprint, size, and shape. The concrete masonry units are $2.10 each and the bricks are 80 cents each. The wall in both cases is 16” tall with a concrete cap.
Considering only the given difference in material costs, what is the cost difference between the two walls?
Incorrect - the answer is 270.00
To answer the question, we need to find the number of concrete masonry units and the number of bricks that will be needed to build the wall. Drawing a picture can help. Keep in mind that nominal sizes are implied in this question.
First the concrete masonry units: The wall is 24’-0” which is 288” long. Since a concrete masonry unit is 16” long, there will be 18 units for each course. Since the wall is 2 courses high, we will need 36 concrete units to build the wall.
Now the bricks: Find how many standard bricks at 8” long are needed to build the 288” long wall. 288” divided by 8” is 36 bricks. That is just one wythe and one course. We have 2 wythes and 6 courses, so multiply 36 times 12 for 432 bricks.
Now calculate the costs and then the cost difference: 36 concrete units at $2.10 each totals $75.60. 432 bricks at $0.80 each totals $345.60. Subtract $75.60 from $345.60 for a cost difference of $270.00.
What unit of measurement is used to measure lighting output?
Light output is measured in lumens.
For the design of new hostess area at a restaurant, a decorative brick wall is proposed. The bricks should have a uniform appearance and will be laid up with narrow joints.
Type FBX requires the highest level of manufacturing precision, meaning they are the most suitable for an application where the joints are narrow, providing little tolerance for variations in size and shape. FBX bricks also have the lowest tolerance for chippage, providing the uniform appearance that is called for.
Incorrect. Type FBS is general purpose face brick and has a wider size variation than this application calls for.
Incorrect. Type FBA permits a greater variance in size and shape among bricks, making it unsuitable for an application with tight joints.
Incorrect. NW is a brick grade, not a brick type like the other answers. NW brick is for use in locations with negligible weathering.
Class II fire hose systems are being installed in the egress stair on each floor. The hoses will be housed in cabinets as shown in the exhibit image.
What is the length of the hose that is being installed?
100 feet
Correct. Fire hoses inside cabinets are usually no longer than 100 feet.
While developing a wall section for a light-framed wood building, the senior architect redlines the drawings and asks that the material between the concrete foundation wall and the bottom plate be labeled.
What should this piece be labeled as?
Correct. The sill sealer/gasket limits air infiltration between the foundation and the frame.
An architect is reviewing the door and frame schedule and specifications for a small boutique gym. The proposed gym is to occupy a 1700 sf space in a new retail tenant space on the ground level of a strip mall. The plans show a small vestibule, an open gym area with equipment and weights, a yoga studio, an administration office, and toilet and changing facilities.
What is the maximum force allowable to open the door to the administration office?
5 pounds maximum
Correct. See ADA 2010 Section 404.2.9 Door and Gate Opening Force.
An MSDS should be requested for which of the following?
Hazardous materials
Correct. MSDS, or Material Safety Data Sheet, should be requested in the submittal requirements for all hazardous materials.
An architect is laying out the floor plan for a small community theater. The building is Type VB construction. In order to get the entire program on one floor, a 2-hour firewall must be used. At the junction where the firewall meets the exterior wall, the building code requires the exterior wall to be rated for a certain distance on either side of the firewall.
What is this distance?
4’-0”
From IBC 2015 Section 706.5:
“Fire walls shall be continuous from exterior wall to exterior wall and shall extend not less than 18 inches (457 mm) beyond the exterior surface of exterior walls.
Exceptions:
1. Fire walls shall be permitted to terminate at the interior surface of combustible exterior sheathing or siding provided the exterior wall has a fire-resistance rating of not less than 1 hour for a horizontal distance of not less than 4 feet (1220 mm) on both sides of the fire wall. Openings within such exterior walls shall be protected by opening protectives having a fire protection rating of not less than 3/4 hour.”
An architect is asked to build a small outbuilding using traditional brick masonry without steel lintels. Due to local regulations on the height of structures, the vertical space available is quite limited. The owner wants as much natural light in the space as possible.
Which type of arch should be used in this case?
Jack Arch
Correct. Only a few inches of camber are required.
Segmental Arch
Incorrect. Shorter in ratio than a perfect half-circle arch, but there is a better option.
Multicentered Arch
Incorrect. Certainly good for the height restriction, but there is a better option.
Parabolic Arch
Incorrect. These require a good deal of height per width.
An existing exterior wall of a small library is constructed with 4” nominal lumber at 12” on center, and batt insulation between the studs. The resulting U-value of this assembly has been measured to be 0.25. An architect has been retained to increase the thermal performance of the building, and they have determined that the best way to do this is to add 2” of continuous rigid insulation to the exterior of the home. The rigid insulation has an R-value of R-4 per inch.
What is the resultant U-value of the assembly after the additional rigid insulation is added?
0.083
Correct. To find the answer, first find the total R-value of the rigid insulation based on the R-value per inch given in the scenario.
4 x 2 inches = 8
The rigid insulation has an R-value of 8. Next, find the R-value of the existing wall by taking the reciprocal of the U-value.
1 / 0.25 = 4
Now add the R-value of the rigid insulation to the R-value of the existing wall.
4 + 8 = 12
Finally, to find the U-value of the proposed assembly, take the reciprocal of the total R-value.
1 / 12 = 0.083
The local authority having jurisdiction (AHJ) is asking the architect for specifications that outline the functional requirements of the project prior to permitting.
Which of the following types of specifications would the architect use?
Performance
Correct. Performance specifications describe the outcome as opposed to exact instructions (prescriptive) or specific products (proprietary).
Prescriptive
Incorrect. Prescriptive specifications describe exactly which materials and format shall be used.
Descriptive
Incorrect. A descriptive specification lists detailed requirements for materials, products, and workmanship.
Closed
Incorrect. Closed is a type of proprietary specification in which bidders are limited to one specific product.
An architect is preparing specifications for the local county jail, and needs to research the code requirements for fire and smoke dampers.
In which chapter of the IBC should they look?
Chapter 7
Correct. Chapter 7 is “Fire and Smoke Protection Features”. This is where you find information about requirements for fire walls, fire doors, and other protection features such as dampers.
Chapter 5
Incorrect. Chapter 5 is General Building Heights and Areas.
Chapter 9
Incorrect. Chapter 9 of the IBC is Fire Protection Systems.
Chapter 6
Incorrect. Chapter 6 of the IBC is Types of Construction.
Information that is project specific and serves to modify the contract may be found in which of the following 3 documents?
Special Conditions
Correct. Special conditions is where project specific information is located that expands beyond the general and supplementary conditions.
Supplementary Conditions
Correct. Supplementary conditions are modifications or supplements to the general conditions.
General Requirements
Correct. Detailed administrative or procedural requirements are located in Division 01 General Requirements.
Bid Form
Incorrect. Bidding documents are not contract documents. They do not modify the contract.
General Conditions
Incorrect. The General Conditions are applicable to most projects. Project specific information that modifies the General Conditions are called Supplementary Conditions.
Instructions to Bidders
Incorrect. Bidding documents are not contract documents. They do not modify the contract.
A luminaire has an output of 3 candelas.
How many lumens does the luminaire produce? Use the value for π rounded to the nearest hundredth. Round your answer to the nearest tenth of a lumen.
A lumen is defined as the amount of luminous flux on an imaginary sphere surrounding the light source at a distance of 1 foot away. Since the area of a sphere is 4π it follows that 1 candela equals 12.57 lumens. 12.57 lumens times 3 equals 37.7 lumens.
A mechanical engineer is designing the heating system for a house in Alaska. In order to know how much heat will be required the degree days must be calculated.What is needed in order to calculate degree days?
What is needed in order to calculate degree days?Check the two that apply.
Climate data
Correct. Degree days are calculated based on average daily temperatures.
Baseline temperature
Correct. Degree days are calculated against a baseline temperature, usually 65 degrees.
Climate zone
Incorrect. Climate zone is not a factor for calculating degree days.
Growing season dates
Incorrect. Dates of the growing season are not a factor for calculating degree days.
Comfort zone of the occupants
Incorrect. Comfort zone is not a factor for calculating degree days.
Fuel type available
Incorrect. Fuel type is not a factor for calculating degree days.
An owner has requested a basement as a part of the design of a new home in an open, suburban site.
What is the best excavation solution for the basement?
A benched excavation
Correct. This increases slope stability and the site should have plenty of room to incorporate a benched excavation.
Sheet piles
Incorrect. The basement would not require such a deep excavation method.
Trench
Incorrect. A trench is a narrow excavation for footings under walls, not basements.
Soldier Piles
Incorrect. This is a system best used on urban areas when deep excavation is needed.
An architect is developing the specifications for a publicly funded job that will be leased out by a private real estate developer.
Which of the following items falls under division 5 of the specifications? Check the four that apply.
Steel Flood Bracing
Correct. Division 5 is Metals and it includes structural steel building components.
Stainless Steel Handrail
Correct. Division 5 is Metals and it includes fabricated metal components.
Prefabricated Guardrail
Correct. Division 5 is Metals and it includes prefabricated metal components.
Roof Access Ladder
Correct. Division 5 is Metals and it includes fabricated metal components.
Metal Rainscreen System
Incorrect. While the panel is made of metal, it is part of a rainscreen system which falls under Division 7 for Moisture and Thermal.
Brass Door Hardware
Incorrect. While made of metal door hardware is a part of the door and falls under Division 8 for Openings.
An architect is preparing threshold details for a new spa located in Washington, DC, and notices that the vertical changes range from 1/4” to 3”.
What is the maximum vertical change allowed before a beveled edge will be needed? Enter your answer as a decimal.
The answer is .25”
Per the 2010 ADA Standards for Accessible Design, a maximum of 0.25” vertical change in floor levels may occur before a bevel is required. A change of more than 1/2” at a threshold is not allowed. If that occurs, it is then classified as a ramp. (The code is more lenient for existing threshholds, allowing for 3/4” maximum vertical change.)
An architect is working with a structural engineer to design the layout of a new A-frame cabin. The cabin is to have a wood joist floor, and to utilize economical spans of available lumber in the local area.
In designing the cabin, which of the following would relate to the joist span? Check the four that apply.
Deflection allowable for the intended use
Correct. Joist span is related to the magnitude of applied loads, joist size and spacing, species and grade of lumber used, and deflection allowable for the intended use.
Joist size and spacing
Correct. Joist span is related to the magnitude of applied loads, joist size and spacing, species and grade of lumber used, and deflection allowable for the intended use.
Species and grade of lumber used
Correct. Joist span is related to the magnitude of applied loads, joist size and spacing, species and grade of lumber used, and deflection allowable for the intended use.
Magnitude of applied loads
Correct. Joist span is related to the magnitude of applied loads, joist size and spacing, species and grade of lumber used, and deflection allowable for the intended use.
A new firehouse is being built to serve a large township. The architect is writing the specifications and needs to determine the best type of specification to use.
Which method of specification is best for public municipalities and government entities who are doing construction projects?
A combination of performance, description, and reference
Correct. It is advisable to use a combination of performance, description, and reference when creating specifications. A combination is used because it allows for competitive bidding, which is essential in public projects.
Performance specifying
Incorrect. It is advisable to use a combination of performance, description, and reference when creating specifications. A combination is used because it allows for competitive bidding, which is essential in public projects.
Proprietary specifying
Incorrect. Publicly-funded projects typically require open and competitive bidding.
Descriptive specifying
Incorrect. It is advisable to use a combination of performance, description, and reference when creating specifications. A combination is used because it allows for competitive bidding, which is essential in public projects.
An architect is preparing detail drawings of a site’s pedestrian path.
In a typical 5-foot-wide concrete sidewalk, what is the distance in feet between expansion joints in the direction of travel?
20’-0”
Expansion joints in a concrete sidewalk are typically 20 feet apart. Control joints are cut more frequently so that the concrete is cut into squares, which would be a distance of 5 feet apart for this scenario.
Fire alarm shop drawings must be prepared for a high-rise residential project.
Which of the following is shown on these drawings?
Annunciator panel
Correct. A fire alarm annunciator panel shows the status of various parts of a building such as fire alarms for use by the fire-fighting crew.
Fire ratings
Incorrect. Fire ratings are not part of the fire alarm plan.
Siamese connection
Incorrect. The fire department connection, or siamese connection, is not part of the fire alarm plan.
Smoke curtain
Incorrect. Smoke curtain locations are not part of the fire alarm plan.
A business owner wants to put a 3 hole golf course on their site as a perk for their employees. The site will require drainage to promote healthy soil and plant life.
Which type of site drainage system should the site designer use in this instance?
Swale
Correct. Swales are shallow linear depressions that are designed into a site’s surface in order to carry away storm water. Since they have no shoulders, they are good for designs that require a seamless integration into the landscape such as on a golf course.
Drainage channel
Incorrect. A drainage channel is for carrying heavier amounts of rainfall perhaps from a collection of swales or other channels. A drainage channel is deeper than a swale and has distinctive shoulders, making it a hazard to the golf game and a dominating feature in the landscape.
Under-drainage
Incorrect. Unless it is required, under-drainage such as perforated drain tiles isn’t used because it is expensive and prone to failure if not done right. A percolation test will determine if it is needed.
Terracing
Incorrect. Terracing is not a drainage strategy. Terraces are to reduce soil erosion.
A historic masonry-clad building with cast iron ornamentation is being repaired and restored.
During which restoration activities are dutchmen used?
Replacing a small section of deteriorated stone on a historic facade
Correct. A dutchman is a repair technique used in masonry to replace damaged or missing sections. First the damaged area is trimmed and squared. Then, new material is cut and finished to match the existing and bonded in place. Large dutchmen are anchored with dowels or cramps in addition to the adhesive bond.
Cleaning of the metal work by immersion into a chemical solution
Incorrect. This describes a caustic dip.
Replicating small, ornamental sections of broken decorative cast iron
Incorrect. A dutchman is a repair technique where damaged or missing sections are replaced. Deteriorated cast iron can be cut out and new cast iron spliced in place by welding or brazing.
Re-anchoring the stone cladding to the structure
Incorrect. Dutchmen are not used in anchoring cladding.
A terrazzo floor is to be installed in the first floor of a slab on grade office building. Cracking due to movement of the slab is of a concern.
Which is the correct order of the assembly that the architect should design and detail?
Terrazzo, Reinforced mortar underbed, Isolation membrane, Layer of sand, Slab
Correct. This describes the ‘sand cushion’ installation of terrazzo, ideal for instances where cracking from movement in the slab is a concern.
There are two identical fans that together produce 60 dB of sound.
If one fan is removed, what is the resulting dB level?
The answer is 57
Reducing sound intensity by half reduces it by 3 dB. 60-3=57.
An exterior wall assembly has an R value of 16.5.
What is the U value?
The answer is between .06 and .061
U=1/R
An architecture firm’s client requests the firm to design an animal hospital for small pets. The site is located in a suburban strip mall.
What occupancy classification is appropriate for this use?
B-Business
Correct. An animal hospital falls within the business category. This building type is typically only occupied during the day and provides office, professional, or service-type functions.
A-Assembly
Incorrect. The assembly classification is intended for gathering spaces for purposes including civic, social or religious functions; food, recreation or drink consumption; or awaiting transportation.
I-Institutional
Incorrect. Institutional occupancies are reserved for people who are not capable of self-preservation without physical assistance, or for people who are detained for penal or correctional purposes.
M-Mercantile
Incorrect. Mercantile occupancies are reserved for buildings that are displaying or selling merchandise, or are involved with the stock of goods, wares or merchandise.
The principal architect has asked the senior architect to specify the required door hardware for several different building typologies.
Which of the following four scenarios would require panic hardware? Check the four that apply.
Rear exit for a large restaurant serving 220 people
Correct. Panic hardware is required for A and E occupancies with 50 or more occupants.
Main exit for a small private high school with 75 students
Correct. Panic hardware is required for A and E occupancies with 50 or more occupants.
Main door for a storage facility housing hazardous materials with occupant load of 3
Correct. Panic hardware is required for a High Hazard occupancies regardless of occupant load.
Gates in the fence at an outdoor swimming pool serving 60 people
Correct. Panic hardware is required for A and E occupancies with 50 or more occupants. An outdoor pool is an A occupancy.
27-story apartment building with 8 apartments on each floor
Incorrect. R occupancies do not require panic hardware.
Main exit for a preschool with 35 occupants
Incorrect. The occupancy load is under 50, so panic hardware is not required.
The drawings for a slab on grade, wood-timbered structure are being prepared. The building will serve as a nature center in a state park in Minnesota.
Which of the following connectors shall be called out on the foundation plan?
Post base
Correct. The base of the post is embedded in the concrete foundation. Any anchors or embedded items are shown on a foundation plan for coordination.
Split ring connector
Incorrect. A split ring connector is used to connect heavy timbers.
Seat angle
Incorrect. Seat angles are used in steel column to beam connections.
Girder hanger
Incorrect. A girder hanger would be used in wood roof framing construction.