AC Exam Cheat Sheet 2

Using the Partial ACI Design Tables 7-2, 7-5.1, 7-5.2 and 7.8.1 provided in this quiz, and given the following conditions for a wall system: Concrete Pressure = 1102 psf Wall Height (h) = 22 feet high Rate of Pour (R) = 10 feet per hour Concrete Temperature (T) = 75 Degrees Fahrenheit Wall Thickness = 15 inches Loading Duration = Long Term Sheathing: = 3/4" B-B Class 1 Plyform, Face Grain Parallel to Span What is the maximum allowable spacing of the studs in inches?

8

Assume the Concrete Mix id Type II cement without retarder, the concrete unit weight (w) is 150 pcf and the wall form system has the following design conditions: Wall Height (h) = 6 feet high Rate of Pour (R) = 10 feet per hour Concrete Temperature (T) = 60 Degrees Fahrenheit Wall Thickness = 15 inches What is the maximum design pressure on the wall in pounds per square foot (psf)?

900

At what depth in feet did they hit water during drilling for Soil Boring #5?

1

Which of the following values is a typical number for the Modulus of Elasticity (E)?

1,300,000

Assume you are pouring a wall that is 151 feet - 4 inches long by 16 feet high an 16 inches thick wall, and the placement will be done using a crane. What is the volume of concrete to be poured in cubic yards?

119.27

Given the following conditions for a wall form system: Concrete Pressure = 1102 psf Wall Height (h) = 22 feet high Rate of Pour (R) = 10 feet per hour Concrete Temperature (T) = 75 Degrees Fahrenheit Wall Thickness = 15 inches Stud Load: = 1000 pounds per lineal foot Stud Lumber = No. 2 Southern Pine, S4S Stud Support Conditions = Continuous over 3 or more spans Stud Horizontal Shear (Fv) = 225 psi Studs = 2 x 8 studs, spaced 10 inches center-to-center Wale Load = 2000 pounds per lineal foot (plf) Wale Lumber = No. 2 Southern Pine, S4S Wale Support Conditions = Continuous over 3 or more spans Wale Horizontal Shear (Fv) = 225 psi Wales = 2 x 8 wales 36 inches center-to-center Maximum Tie Spacing = 45 inches What is the Wall Tie load capacity in pounds (rounded to whole number)?

12398

Assume that your concrete weighs 150 pounds per cubic foot and the concrete slab is 10 inches thick. What id the total dead load for the slab in pounds per square foot?

125

A wall forming system has the following design conditions: Concrete Mix = Type III Cement with retarder Concrete Unit Weight (w) = 150 pcf Wall Height (h) = 15 feet high Rate of Pour (R) = 10 feet per hour Concrete Temperature (T) = 75 Degrees Fahrenheit Wall Thickness = 15 inches What is the maximum design pressure on the wall in pounds per square foot (psf)?

1323

If the Unit Weight Coefficient is 1.0, what is the weight range of a cubic foot of concrete for design purposes?

140-150

According to the ACI 347-04 Committee, what is the maximum rate of pour allowed for a wall in feet per hour having a placement height greater than 14 feet?

15

A steel shape S12 x 50 is 30 feet long. How much does it weigh?

1500 pounds

Assume you are pouring a wall that is 151 feet - 4 inches long by 16 feet high an 16 inches thick wall, and the placement will be done using a crane. Assume the bucket has a capacity of 2.5 cubic yards and it takes 7 minutes per cycle. What is the rate of delivery in cubic yards per hour?

21.43

A column system has the following design conditions: Column Height (h) = 15 feet high Rate of Pour (R) = 20 feet per hour Concrete Temperature (T) = 70 Degrees Fahrenheit Column Thickness = 24 inches by 24 inches What is the maximum design pressure on the column in pounds per square foot (psf)?

2250

Using the Average Soil Weights Table, what is the swell percentage using a Loam?

23.8

Assume you have a beam that is 16 feet long and carries a concentrated load of 900 pounds at a distance of 4 feet from R2. Reaction (R1) is pinned 12 feet from the load. What is the maximum bending moment in lb-ft?

2700

Assume you are pouring a wall that is 151 feet - 4 inches long by 16 feet high an 16 inches thick wall, and the placement will be done using a crane. Assume that you can place 33 cubic yards per hour. How many hours are required to place the cubic yards of concrete?

3.61

Given the following conditions for a wall form system: Concrete Pressure = 1102 psf Wall Height (h) = 22 feet high Rate of Pour (R) = 10 feet per hour Concrete Temperature (T) = 75 Degrees Fahrenheit Wall Thickness = 15 inches Stud Load: = 1000 pounds per lineal foot Stud Lumber = No. 2 Southern Pine, S4S Stud Support Conditions = Continuous over 3 or more spans Stud Horizontal Shear (Fv) = 225 psi Studs = 2 x 8 studs, spaced 10 inches center-to-center Wale Lumber = No. 2 Southern Pine, S4S Wale Support Conditions = Continuous over 3 or more spans Wale Horizontal Shear (Fv) = 225 psi Wales = 2 x 8 wales 36 inches center-to-center What is the uniform wale load (rounded) in pounds per lineal foot?

3000

Assume you have a wooden beam that is 20 feet long and carries a concentrated load of 500 pounds at a distance of 15 feet from Reaction (R2). Reaction (R1) is pinned 5 feet from the load. What are the values in pounds for R1 and R2? A. 475 and 25

375 and 125

Using the Partial ACI Design Tables 7-2, 7-5.1, 7-5.2 and 7.8.1 provided in this quiz, and given the following conditions for a wall system: Concrete Pressure = 1102 psf Wall Height (h) = 22 feet high Rate of Pour (R) = 10 feet per hour Concrete Temperature (T) = 75 Degrees Fahrenheit Wall Thickness = 15 inches Stud Load: = 1050 pounds per lineal foot Stud Lumber = No. 2 Southern Pine, S4S Stud Support Conditions = Continuous over 3 or more spans Stud Horizontal Shear (Fv) = 225 psi Studs = 2 x 8 studs, spaced 10 inches center-to-center What is the maximum allowable spacing of the wales in inches?

44

According to OSHA, what is the minimum ratio for a layered soil system?

4h:1v

Assume you are pouring a wall that is 151 feet - 4 inches long by 16 feet high an 16 inches thick wall, and the placement will be done using a concrete pump with a capacity of 635 cubic feet per hour. How many hours are required to place the cubic yards of concrete.

5.07

Assume you are pouring a wall that is 151 feet - 4 inches long by 16 feet high an 16 inches thick wall, and the placement will be done using a crane. Assume the bucket has a capacity of 2.5 cubic yards. The pour is 55 feet above the ground, the rate of travel up for the bucket is 80 feet per minute, and the rate of travel down is 100 feet per minute. Assume the load time is 30 seconds and unload time is 4.0 minutes. What is the cycle time in minutes?

5.74 mins

Assume a wale load given below, and using the Partial ACI Design Tables 7-2, 7-5.1, 7-5.2 and 7.8.1 provided in this quiz, and given the following conditions for a wall system: Wale Load = 1550 punds per lineal foot Wale Lumber = No. 2 Southern Pine, S4S Wale Support Conditions = Continuous over 3 or more spans Wale Horizontal Shear (Fv) = 225 psi Wales = 2 x 8 wales 36 inches center-to-center What id the maximum allowable tie spacing in inches?

52

Assume you are pouring a wall that is 151 feet - 4 inches long, 14 feet high and 16 inches thick and the daily placement rate is 735 cubic yards per 8-hour day. What is the rate of pour in feet per hour?

6.27

Assume you have a beam that is 16 feet long and carries a concentrated load of 900 pounds at a distance of 4 feet from R2. Reaction (R1) is pinned 12 feet from the load. What is the maximum shear?

675

What is the Ground Elevation in feet for Soil Boring #5?

683.2

Assume you are pouring a wall that is 151 feet - 4 inches long by 16 feet high an 16 inches thick wall, and the placement will be done using a crane. Assume that it takes 2.25 hours to place the 151' 4" long by 16' high y 16" thick wall. What is the rate of placement in feet (vertical) per hour?

7.11

What is the minimum live load for motorized buggies in pounds per square foot?

75

What is the stress term called in a wood frame structure which works in unison to support the load on the structure and allows part of the load from a weaker member to be distributed to adjacent members?

Extreme Fiber Bending (Fb) in Repetitive members

This type of steel shape have equal flange and web thicknesses and are most commonly used for bearing pile.

HP-Shape

What is the stress term called that is induced by the tendency for the upper fibers to slide over the lower fibers as a beam bends?

Horizontal Shear parallel to the grain (Fv//)

Under the structural lumber classification system, what is the name of the top grade?

Select Structural Grade

What does the abbreviation of S2S stamp on a piece of lumber mean?

Smooth Two Sides

What does the abbreviation SPT mean?

Standard Penetration Test

Wall ties are being ordered. Which of the following items must you provide the supplier with to have a complete description?

Wall thickness, tie load capacity, break back, and tie extension

What is the soil state called if it is in its natural, in place, in situ, or undisturbed state?

bank

Deflection is a result of what type of stress?

bending

The soil is protruding from the face of the open excavation into the excavation. What is the visual inspection term called?

bulging

What type of weld fits two pieces of metal together end-to-end for welding?

butt

Which field manual test is used to differentiate between cohesive material with fissures, unfissured cohesive material, and granular material?

drying test

What are the drawings called that are issued to the contractor from the manufacturer indicating the locations and proper positioning of each piece of steel within the structure.

erection drawings

Which party is responsible for the design of the concrete formwork?

field engineer

Assume you have a square weld symbol with a solid flag on a pole coming up from the change in direction of arrow. What does the solid backwards flag on a pole tell you?

field weld

Which of the following is structural steel most susceptible to for failure?

fire

Which of the following soils is considered cohesionless?

gravel

The soil is protruding up from the bottom of the excavation. What is the visual inspection term called?

heaving

This type of hollow structural shapes can be square, rectangular, circular, or elliptical. They have radiuses that that approximately twice the thickness of the wall. Engineers commonly use these shapes in welded steel frames that experience loading in different directions.

hss-shaped

Using the Relative Density and Consistency Table, Soil Boring #5, and assuming the Penetration Resistance "N" is 7, what is the material description from the Table?

loose

What structural steel component is the steel designation "VL" referring to?

metal decking

What is sprayed onto structural steel to increase its fire resistance capability?

mineral wood

_______________ is a measure of its ability to cause turning, rotating or twisting about the axis of rotation.

moment

How is the fireproofing of a steel structure determined?

occupancy

Using Soil Boring #5, is there any unsuitable soil?

organic topsoil

Which of the plyform orientations provides the strongest formwork system?

parallel to span

What is a wood member called that is graded according to its bending strength on its wider dimension which is 2-4 inches thick and at least 6 inches wide?

planks

Which panel wood product is made up of thin layers of wood veneers adhered together in alternating directions?

plywood

A small amount of material suddenly separates from the face of an excavation and trickles or rolls down into the excavation. What is the visual inspection term called?

raveling

Often referred to as the American Standard Beam, the inner flange surfaces are sloped.

s-shape

Which of the following tests is performed on cohesionless soils to determine the distribution of grain size?

sieve analysis

What do the field thumb penetration, pocket penetrometer and the shearvane measure?

unconfined compressive strength

When a force causes a structural member to fail by cutting perpendicular to the beam's longitudinal axis at or near the beam's support it is called:

vertical shear

This type of steel shape have parallel flange surfaces and the flange thickness is not necessarily equal to the web thickness. This shape is most commonly used for structural beams in a building.

w-shape

Vertical loads on formwork include dead loads and live loads. Which of the following would not be considered a live load?

weight of concrete

Concrete formwork encounter lateral loads whose main component is a horizontal force acting on the structure. Which of the following is not considered a lateral load?

weight of reinforcement

Vertical loads on formwork include dead loads and live loads. Which of the following would not be considered a dead load?

weight of workers

What is the wood member called that is graded according to its bending strength on its narrow edge which is at least 4 inches thick and at least 2 inches wider than they are thick?

Beams and Stringers

What does the abbreviation bpf mean?

Blows per foot

What is the stress term called which is the measure of the stiffness or resistance to deflection?

Modulus of Elasticity (E)

Given the following conditions for a wall form system: Concrete Pressure = 1102 psf Wall Height (h) = 22 feet high Rate of Pour (R) = 10 feet per hour Concrete Temperature (T) = 75 Degrees Fahrenheit Wall Thickness = 15 inches Stud Load: Stud Lumber = No. 2 Southern Pine, S4S Stud Support Conditions = Continuous over 3 or more spans Stud Horizontal Shear (Fv) = 225 psi Studs = 2 x 8 studs, spaced 10 inches center-to-center What is the uniform stud load (rounded) in pounds per lineal foot?

918

Given the following design conditions for a wall form system: Concrete Mix = Type II Cement without retarder Concrete Unit Weight (w) = 150 pcf Wall Height (h) = 10 feet high Rate of Pour (R) = 6 feet per hour Concrete Temperature (T) = 70 Degrees Fahrenheit Wall Thickness = 15 inches What is the maximum design pressure on the wall in pounds per square foot (psf)?

921

Plywood veneer panels are stamped A, B, C, or D veneer grade based on the number of defects found in the surface layer veneer. A veneer garde of ___ means the panels have very few to no defects.

A

The soil report discusses the Penetration Resistance "N" Blow Count Summation procedure. What is the correct summation procedure?

Add Blow Counts 2 and 3

Which of the following references is incorporated by reference for the design of vertical and horizontal forms, copy of which shall be maintained on the jobsite at all time?

American Concrete Institute's publication titled Formwork for Concrete

Which organization publishes structural steel design properties manuals and manuals that cover steel construction methods?

American Institute of Steel Construction

What does the steel designation C12 x 20.7 mean?

C is the steel shape, 12 is the nominal depth and 20.7 is the pounds per foot

What is the stress term called that is induced by pressing the fiber together longitudinally on its cross section?

Compression parallel to the grain (Fc//)

What is the structural lumber grade used where straightness and strength are the most important consideration, such as formwork?

Construction Grade

Which of the following soft wood species used for structural lumber have the highest Fiber Bending and Modulus of Elasticity (E) values?

Douglas Fir and Southern Yellow Pine

What is the stress term called that has the narrow dimensions carrying the load with the fibers at the top in compression and the bottom fibers in tension?

Extreme Fiber Bending (Fb)

What is the wood member called that is graded according to its bending strength on its narrow edge which is 2-4 inches and at least 6 inches wide?

Joists

What is the moisture content percentage of the lumber stamp abbreviation of S-DRY?

Less than 19

What is the Soil Classification for Boring #5 shown at 6 feet?

Loose to Very Loose Brown Fine to Coarse Sand

________________ is and ideal product for concrete forms because of it's durability, strength and water-resistance. The smooth, slick finish imparts a consistent, even surface to the face of the concrete.

Medium Density Overlay Plywood (MDO)

Which test is specified for fill material designated for use under areas where high design loads are anticipated, such as airport runways and paved areas?

Modified Proctor

What structural steel component is the steel designation "LH" referring to?

Open-web Joist

Which panel wood product is typically used in floor, wall, and roof sheathing and is less expensive than plywood?

Oriented Strand Board (OSB)

Assume you have a fillet weld symbol on the top of the welding symbol arrow. Which side will the weld be placed on?

Other side from where the arrow is pointing

This type of wood panel product is typically used in shelving, plastic laminate counter-tops, and other non-structural applications.

Particle Board

Which field manual test checks for cohesive soil?

Plasticity Test

What is the wood member called that is graded according to its load being carried on the cross section?

Post and Timbers

What is the stress term called that when the stress is induced by pulling apart in a longitudinal direction?

Tension parallel to the grain (Ft//)

What does the B-B designation plyform refer to?

The front and back surface plies have a solid surface with smooth repair plugs

What is the standard in North America for the outer layer of plyform?

The grain of the outer layer is parallel to the long dimension.

What are the most commonly used soil classification systems based on grain size?

Uniified Soil Classification System (USCS) and the American Association of State Highway and Transportation Officials (AASHTO)

What type of hammer and fall distance was utilized for sampling the soil borings?

a 140-pound hammer falling 30 inches

Which of the following techniques is used to determine the liquid, plastic, semisolid, and solid states of consistency for a cohesive soil?

atterberg limits

If the weld is supposed to be on all four sides, what symbol will be used?

circle

What type of soil is the most dangerous because the excavated faces appear to be solid and stable, but are drastically affected by water, wind, and pressure?

clay

Which party is responsible for comparing the soil borings to the standard Relative Density and Consistency Table provided in the Soil Report?

contractor

What is the term for a material that deforms slowly when a force is applied to it for an extended period of years, even though the force is too small to cause failure in a short period of time?

creep