Chapter 3

In a building whose structural system consists of columns, beams, and floor and roof slabs, the columns are spaced at 40 ft on center in one direction and 25 ft on center in the other direction. What is the tributary area for an interior column? a. 1,000 ft^2 b. 1,000 ft c. 500 ft d. 250 ft^2 e. None of the above

1,000 ft^2

The total approximate dead load of a floor in a typical wood frame residential building is a. 50 psf b. 30 psf c. 10 psf d. 5 psf e. none of the above

10 psf

For most of the United States, the design wind speed for an average risk building is a. 95 mph b. 105 mph c. 115 mph d. 125 mph e. 150 mph

115 mph

In a building whose structural system consists of columns, beams, and floor and roof slabs, the columns are spaced at 40 ft on center in one direction and 25 ft on center in the other direction. What is the tributary area for a corner column? a. 1,000 ft^2 b. 1,000 ft c. 500 ft d. 250 ft^2 e. None of the above

250 ft^2

The design wind speed for a location is the peak a. 60-s gust speed b. 10-s gust speed c. 5-s gust speed d. 3-s gust speed e. 1-s gust speed

3-s gust wind speed

A reinforced concrete beam measures 12 in. X24 in. in cross section. If the density of reinforced concrete is 150 lb/ft^3, the weight of the beam is a. 450 lb/ft b. 350 lb/ft c. 300 lb/ft d. 300 lb e. 300 lb/ft^3

300 lb/ft

The floor live load in a residential occupancy is generally assumed a. 40 psf b. 10 psf c. 20 psf d. 5 psf e. none of the above

40 psf

The total approximate gravity load on a floor in a typical wood frame residential building is a. 50 psf b. 30 psf c. 10 psf d. 5 psf e. none of the above

50 psf

Which of the following loads can be estimated with greatest certainty? a. Dead loads b. Live loads c. Wind loads d. Earthquake loads e. Snow loads

Dead loads

With respect to wind pressure, a building site is classified in terms of a. Exposures A, B, C, and D b. Exposures A, B, and C c. Exposures X, Y, and Z d. Exposures P, Q, R, and S e. Exposures B, C, and D

Exposures B, C, and D

An average tornado strikes a larger area on the ground than a hurricane True False

False

For wind blowing along one of the two major axes of a rectangular building, the leeward wall is subjected to positive (toward-the-wall) pressure True False

False

For wind blowing along one of the two major axes of a rectangular building, the side walls are subjected to positive (toward-the-wall) pressure True False

False

Roof live load is a function of the building's occupancy. True False

False

Which of the following occupancies has the highest floor live load? a. Classrooms b. Hotel guest rooms c. Library stack rooms d. Library reading rooms e. Offices

Library stack rooms

In which of the following roofs will you consider the effect of rain load? a. Roof with a parapet b. Roof without a parapet

Roof with a parapet

Everything else being the same, a building constructed heavyweight materials is subjected to a greater earthquake load than a building constructed of lightweight materials. True False

True

For wind blowing along one of the two major axes of a rectangular building, the windward wall is subjected to positive (toward-the-wall) pressure True False

True

The design snow load on a roof is a function of a. ground snow load of the location b. roof slope c. wind exposure classification of the site d. all of the above e. both (a) and (b)

all of the above

The design wind speed is also referred to as the a. standard wind speed b. official wind speed c. uniform wind speed d. straight-line wind speed e. basic wind speed

basic wind speed

The two main categories under which all building loads may be classified are a. dead loads and live loads b. gravity loads and lateral loads c. terrestrial loads and celestial loads d. first-class and second-class loads

gravity loads and lateral loads

On a leeward wall, the wind pressure a. increases with height above the ground b. decreases with height above the ground c. is almost constant with height above the ground

is almost constant with height above the ground

The loads on a column are generally expressed in a. lb/ft^2 b. lb/ft c. lb d. lb/ft^3 e. none of the above

lb

The loads on a beam are generally expressed in a. lb/ft^2 b. lb/ft c. lb d. lb/ft^3 e. none of the above

lb/ft

The loads on a floor are generally expressed in a. lb/ft^2 b. lb/ft c. lb d. lb/ft^3 e. none of the above

lb/ft^2

The roof live load in a building is generally a. less than the floor live load b. greater than the floor live load c. the same as the floor live load

less than the floor live load

An earthquake measuring 7.0 on the Richter scale is a. twice as strong as a 6.0 earthquake b. 10 times stronger than a 6.0 earthquake c. 100 times stronger than a 6.0 earthquake d. 500 times stronger than a 6.0 earthquake e. none of the above

none of the above

The design wind speed for an average-risk building at a location has a probability of occurrence of a. once in 300 years b. once in 200 years c. once in 100 years d. once in 50 years e. none of the above

none of the above

The number of mild (minor to very minor) earthquakes occurring on the earth is almost a. 1 or 2 per year b. 10 to 20 per year c. 100 per year d. 1,000 per year e. several thousand per year

several thousand per year

According to the geologists, the earth's surface is composed of several segments that are called a. earth segments b. surface plates c. tectonic plates d. geological segments e. segmental plates

tectonic plates

Highest wind speeds are usually obtained in a. hurricanes b. wind storms c. thunderstorms d. tornadoes

tornadoes

The region of the United States that is relatively more earthquake prone is the a. northern United States b. southern United States c. eastern United States d. western United States e. none of the above

western United States