AEC 204 - 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 a interior column?

1,000ft^2

The total approximate dead load of a floor in a typical wood frame residential building is

10 psf

For most of the United States, the design wind speed for an average-risk building is

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?

250ft^2

The design wind speed at a location is the peak

3-s gust speed

A reinforced concrete beam measures 12in. x 24in. in cross section. If the density of the reinforced concrete is 150lb/ft^2, the weight of the beam is

300lb/ft

The floor live load in a residential occupancy is generally assumed to be

40 psi

The total approximate gravity load on a floor in a typical wood residential building is

50 psf

(T/F) Roof live load is a function of the building's occupancy.

False

(T/F)An average tornado strikes a larger area on the ground than a hurricane

False

(T/F)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

False

(T/F)For wind blowing along one of the two major axes of a rectangular building, the side walls is subjected to positive (toward the wall) pressure

False

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

True

The design snow load on a roof is a function of

all of the above

The design wind speed is also referred too as the

basic wind speed

Which of the following loads can be estimated with the greatest certainty?

dead loads

With respect to wind pressure, a building site is classified in terms of

exposures b, c, and d

The two main categories under which all building loads may be classified are

gravity loads and lateral loads

On a leeward wall, the wind pressure

is almost constant with height above the ground

The loads on a column are generally expressed in

lb

The loads on a beam are generally expressed in

lb/ft

The loads on a floor are typically expressed with

lb/ft^2

The roof live load in a building in generally

less than the floor live load

Which of the following occupancies has the largest floor live load

library stack rooms

An earthquake measuring 7.0 on the Richter scale is

none of the above

The design wind speed for an average risk building at a location has a probability of occurrence of

none of the above

In which of the following roofs will you consider the effect of rain load

roof with a parapet

The number of mild (minor to very minor) earthquakes occurring on the earth is almost

several thousand per year

According to the geologists, the earth surface is composed of several segments that are called

tectonic plates

Highest wind speeds are usually obtained in

tornadoes

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

true

The region of the united states that is relatively more earthquake prone is the

western united states