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
