CMT 310 Final Exam

Which of these masonry insulating techniques affects the exterior appearance of the wall? - interior insulation - EIFS - wall cavity insulation - hollow-core insulation - internal CMU polystyrene insulation

- EIFS

The performance of glazing as a thermal insulator is quantified as its ____________ and is expressed at BTUs per sq-ft-hr-degree Fahrenheit - solar heat gain coefficient - U-factor - translucent light gain - None of the above

- U-factor

Water permeability of paving can be improved by - using permeable paver - laying pavers in a herringbone pattern - spacing conventional paving units and filling in gaps with sand - a and c only - all of the above

- a and c only

When compared to light gauge framing which of the following are advantages over wood framing - versatile - noncombustible - simple to construct - all are advantages over Wood Framing

- all are advantages over Wood Framing

Which of the following is taken into consideration when determining the right glass for Building Codes - structural adequacy - breakage safety - wind and impact loads - prevent fire spread - all of the above

- all of the above

Which of the following would be used as a sustainable practice for quarries being mined for construction materials - encourage vegetation - land shaping - habitat restoration - all the above

- all of the above

Light-gauge steel buildings must be stiffened by - bracing at 4' intervals - diagonally bracing walls - adding stiffeners at the end of joints - none are necessary - all of these are necessary

- all of these are necessary

Lighter weight CMU blocks are: - lower thermal conductivity - less expensive to transport and lay - higher fire-resistance rating - all the above

- all the above

Masonry walls can be insulated by which of the following thermal systems - within the wall - outside face - inside face - all the above

- all the above

Which of the following can occur if differences in expansion and contraction are not considered in a composite masonry wall - stresses - bowing - cracking - all the above

- all the above

A composite masonry wall is so named because it features: - structural steel embedded in the CMU - two wythes of brick sandwiching a core of reinforced grout - polymers added to the mortar to increase strength - multiple wyths of rigid board insulation alternating with wythes of brick - an outer wythe of stone or brick and a backup wythe of CMUs

- an outer wythe of stone or brick and a backup wythe of CMUs

A joint sealant can fail overtime due to - improper tooling - lack of a bond break - incorrect sealant class selection - any of the above

- any of the above

Flashings used in masonry cavity wall construction can be made out of each of the following materials except - ashlar - copper sheet metal - stainless steel sheet metal - plastics - elastomeric materials

- ashlar

Which of the following terms is not associated with achieving longer spans in steel - joist girder - backup bar - castellated beam - rigid frame member - plate girder

- backup bar

The steel used for light gauge steel framing differs from the steel discussed in Chapter 11 ("Steel Frame Construction") in that light gauge steel is: - more susceptible to corrosion - always solid, with no openings for wiring, plumbing, ect - never produced in the United States, due to environmental concerns - has superior insulating capabilities - cold rolled

- cold rolled

Steel production does not include - coking of coal - reheating in a breakdown mill - continuous casting of molten steel into W-shapes - electric furnace melting - disposal of slag

- continuous casting of molten steel into W-shapes

The tooled joint lines that you can see on a typical concrete sidewalk are - expansion joints - control joints - building joints - seismic joints - construction joints

- control joints

Which of the following has the principle function of providing lateral stability to a steel frame - shear connections - diagonal bracing - anchor bolts - high-strength bolts - all of the above

- diagonal bracing

Brick masonry is considered a Green and Sustainable product because it uses - earth abundant materials - red oxidizers - inexpensive to ship - all the above

- earth abundant materials

Slip forming would be most beneficial when constructing: - shallow footings - slabs on grade - elevator shafts or storage silos - waffle slab - precast double tees

- elevator shafts or storage silos

Cast iron has little or no carbon, strong is tension but weaker in compression and it is relatively soft, making it easy to shape - true - false

- false

Caution is taken to protect the environment from the known health hazards associated with material glass - true - false

- false

Granite is the softest stone ised and often quarried by excavation - true - false

- false

In cold climates, continuous insulation is NOT required on one side or other of framing, to mitigate thermal bridging in light gauge framing - true - false

- false

Stone is considered a green and sustainable product because it is relatively inexpensive to transport and considered low energy intensive - true - false

- false

Topper forms are strips of wood or metal placed to contain the concrete pour at the slab edges - true - false

- false

Traditional, unreinforced solid masonry walls rely on the tensile strength of deformed rebars to stabilize their weight and durability - true - false

- false

The two unique and special qualities of bricks are their size and - color - ingredients - cost - fire resistance

- fire resistance

Which of the following metals would NOT form self- protecting oxide coatings and create a natural patina - copper - lead - zinc - galvanized aluminum - none of the above

- galvanized aluminum

Of you see a jet burner or a diamond wore cutting stone at a quarry, which stone is most likely being cut - granite - sandstone - marble - limestone - slate

- granite

Which of the following should be done to avoid detrimental impacts for quarry reclamation - habitat restoration - revegetation - land shaping - all of the above

- habitat restoration

Polysulfides, silicones, and polyurethanes are examples of: - low-range sealants - medium-range sealants - high-range sealants - materials used in backer rods - materials used in air barriers

- high-range sealants

Trussed joint reinforcement: - is used to reinforce against high loads - can span across a movement joint - is laid into the mortar bed - is an effective vertical reinforcement for CMU walls - is used to attach roof trusses to masonry

- is laid into the mortar bed

Structural steel - contains roughly 2% carbon - is made of carbon with iron as alloy - contains nickel and chromium as alloys - is largely made from scrap automobiles - is exactly what used to be called wrought iron

- is largely made from scrap automobiles

A curtain wall - is an interior, decorative wall - is supported by the floor below - is a masonry gravity wall - is suspended by the floors above - is always fully glazed

- is suspended by the floors above

This type of stone is relatively soft and more subject to weathering and erosion in comparison to granite - marble - limestone - greenstone - glazed block

- limestone

________________ are less expensive to build, produce higher-quality steel at less cost and use less energy - mini mills - electric arc mills - phosphorous mills - hydration process - cold-roll mills - none of the above

- mini mills

In a CMU loadbearing wall the weakest component is the: - mortar - CMU - rebar - concrete fill

- mortar

The material used to fill the space between masonry units is known as - mortar - grout - mine - concrete

- mortar

Which term does not belong with the others - expansion joint - mortar joint - control joint - isolation joint

- mortar joint

Welded connections - are usually weaker than bolted connections - can be performed by unskilled workers - are not sensitive to weather conditions - only require gas, not electricity - none of the above

- none of the above

The rainscreen principle attempts to: - prevent wind driven water from breaching a curtain wall by using reinforced fiberglass mesh in the cavity behind the wall - use a backer rod and high range sealants to completely seal a curtain wall against wind-driven rain - channel any water that penetrates the curtain wall down the cavity and out through weep holes - prevent wind-driven water from breaching a curtain wall by using design features that combat water's surface tension - prevent wind-driven water from breaching a curtain wall by equalizing the air pressure on both sides of the wall

- prevent wind-driven water from breaching a curtain wall by equalizing the air pressure on both sides of the wall.

In reinforced CMU walls: - only the rebar containing cores are filled with grout - rebars are only added horizontally - rebar can be placed horizontally and vertically - lintels are never grouted on the site - frogged CMUs are used to place rebar

- rebar can be placed horizontally and vertically

Which brick masonry wall would be the strongest and able to stand up against vertical loads, flexural loads and shear loads - unreinforced - reinforced - segmental - none of the above

- reinforced

Open-webbed steel joists are usually used in a commercial steel-framed building to support: - loads above relatively wide openings - stairways - roof decks - joist girders - elevator shafts

- roof decks

The main function of a backer rod is to - create a permanent seal for a gap - structurally separate the two wall elements - shape the sealant and provide a bond break - give a joint an aesthetic finish

- shape the sealant a d provide a bond break

Weathering and stainless steels are examples of: - steel alloys - heat-treated steel - wrought iron - cast iron - structural steel

- steel alloys

Which of the following is primarily responsible for preparing structural steel shop drawings, which show details of connections, exact spacing of bolt holes, anchor bolt size and locations, that are ready to be assembled without further processing - architect/engineer - general contractor - steel fabricator - steel erector - steel manufacturer

- steel fabricator

This type of glass is very strong and if is to break, the sudden release of its internal stresses reduce it almost instantaneously to small, edge granules - float glass - tempered glass - plate glass - heat-strengthened glass

- tempered glass

The waffle slab is - the two-way concrete joist framing system - a one way floor and roof framing system - the one way concrete joist framing system - an unreinforced floor and roof framing system - none of the above

- the two-way concrete joist framing system

The advantages of using light gauge steel framing members in lieu of wood framing members include all of the following except - framing members are significantly lighter than the wood members to which they are structurally equivalent - they can be used in buildings for which noncombustible construction is required by building codes - they provide better thermal insulation than do wood members of the same size - all of the above

- they provide better thermal insulation than do wood members of the same size

Analogous to wall plates and rim joists in light wood frame construction, these _____________ are used for the top and bottom of light gauge wall framing - sill plates - tracks - L- header - payne plates - double plates - studs

- tracks

Brick, stones, and CMUs are mixed and matched in both loadbearing and nonloadbearing walls - true - false

- true

Form toes can be made from steel rods, straps, wore, fiberglass or other plastics - true - false

- true

Glass is a two-way pipeline for the flow of both conducted and radiated heat - true - false

- true

Glass is capable of resisting structural loads - true - false

- true

Greater proportions of carbon generally increase the hardness and brittleness of the iron alloy - true - false

- true

In North America today, most steel is made from recycled steel scrap in "mini mills" using electric arc furnaces - true - false

- true

Light Gauge Steel components are cold-rolled from steel sheets - true - false

- true

Loadbearing masonry walls may be built without rebar reinforcement - true - false

- true

Masonry is known as the simplest of building techniques, yet one of the most labor intensive - true - false

- true

Prestressing strands for a highway girder are depressed into a shallow V shape to resist tensile forces in the beam - true - false

- true

Stone masonry supports its own weight - true - false

- true

The combination of CMU masonry construction with steel lends itself to being a desirable noncombustible system - true - false

- true

The green benefits of the use of earth for making masonry can be countered by the cost in energy and fuels to kiln dry the finish product - true - false

- true

The thermal performance of glazing can be improved substantially by the use of glass with a low-emissivity coating - true - false

- true

The process of raking and cutting out defective mortar and replacing it with fresh mortar is called: - reglet installation - string-lining - parging - tuck pointing - finger-jointing

- tuck pointing

The effect of post-tensioning a concrete masonry wall is to put the wall in - horizontal tension - horizontal compression - vertical shear - vertical tension - vertical compression

- vertical compression

Shear panels or shear walls are sometimes used in steel-framed buildings. Which component of wood light frame construction serves the same function as a shear panel/wall? - wall sheathing - exterior wall stud - rafter - prefabricated roof trusses - floor joists

- wall sheathing

Form ties are associated with which concrete element? - slab on grade - elevated slab - walls - caissons - spread footings

- walls

Shear stirrups are formed from recycled unconventional steel reinforcing - true - false

-false

A low-slope roof is defined as having no more than ______ inch rise

2

You would be most likely to find leveling nuts near which item - a coped beam to beam connection - an arc welding electrode - a column base plate - exterior x-bracing on a steel frame - a beam to column moment connection

A column base plate

Exterior sheathing for noncombustible light gauge steel walls is typically: - plywood - masonry - gypsum board - sheet metal

Gypsum board

Which of the following is NOT considered a common surface divider joint used in masonry - expansion joints - linear joints - control joints - construction joints

Linear joints

Composite steel decking reinforces the concrete slab in which direction? - parallel to beams - parallel to the girders - perpendicular to beams and girders - composite decking is used only for roofs

Perpendicular to beams and girders

Which of the following is not associated with finishing a concrete slab on grade - strike off - floating - troweling - posttensioning tendons

Post-tensioning tendons

Which of the following offers a greater floor strength and stiffness, fire resistance, acoustic isolation and integration of electrical into flooring systems - sitecast concrete topping - precast chases - precast wire slabs - none of the above

Sitecast concrete toppings

The detrimental impacts of stone quarrying can long outlive the buildings for which the stone was extracted - true - false

True