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Structures test 1

Terms in this set (18)

Load paths must be __________________
Continuous
Members with large tributary areas receive greater live load reductions than members with small tributary areas. T/F
True
ASCE is an abbreviation for
American Society of Civil Engineers
IBC is an abbreviation for
International Building Code
Name one structure type where ice loading may be significant
Louver/ Sunshade/ Transmission tower/ Utility line
List (Braced frame, Moment frame, Shear wall) from least economical to most economical
Moment frame - Braced frame - Shear wall
List (Braced frame, Moment frame, Shear wall) from least architectural flexibility to most architectural flexibility
Shear wall - Braced Frame - Moment frame
Braced frames behave similarly to which structural element: Truss, Simple beam, or cantilevered beam
Truss
Braced frames achieve their strength and stiffness through
Axial force in members
Moment frames achieve their strength through
Member bending
In eccentrically braced frames, members have eccentric
Work points
When considering spatial requirements for braced frames, what is the name of the connecting elements which may be very large and potentially create interferences?
Gusset plates
A stiffer element in a lateral force resisting system will attract (more, less, the same) load when the lateral load is distributed through a flexible diaphragm
The same
A good rule of thumb for MWFRS wind loading for buildings in non-coastal regions and less than 30' tall is ________ PSF
15
Wind pressure can only be applied __________________ to any surface
Perpendicular
Code required snow loading on a flat roof will not be affected if the facility is converted from a car dealership to an emergency response center (i.e. no geometry change).
T/F
False
Sutes with hard soils/rocks are more suitable for constructing in high seismic regions than sites with soft soils. T/F
True
A good way to mitigate high seismic forces in a building is to add mass to the upper levels of the structure. T/F
False
Verified questions
physics
A series of parallel linear water wave fronts are traveling directly toward the shore at $15.0 \mathrm{~cm} / \mathrm{s}$ on an otherwise placid lake. A long concrete barrier that runs parallel to the shore at a distance of $3.20 \mathrm{~m}$ away has a hole in it. You count the wave crests and observe that $75.0$ of them pass by each minute, and you also observe that no waves reach the shore at $\pm 61.3 \mathrm{~cm}$ from the point directly opposite the hole, but waves do reach the shore everywhere within this distance. (a) How wide is the hole in the barrier? (b) At what other angles do you find no waves hitting the shore?
Verified answer
engineering
A steam turbine operating at steady state develops 9750 hp. The turbine receives 100,000 pounds of steam per hour at $400 \text { lbf/in. }^{2}$ and $600^{\circ} \mathrm{F}.$ At a point in the turbine where the pressure is $60 \mathrm{lbf} / \mathrm{in} .^{2}$ and the temperature is $300^{\circ} \mathrm{F},$ steam is bled off at the rate of 25,000 lb/h. The remaining steam continues to expand through the turbine, exiting at $2 \mathrm{lbf} / \mathrm{in}^{2}$ and 90% quality. a. Determine the rate of heat transfer between the turbine and its surroundings, in Btu/h. b. Devise and evaluate an exergetic efficiency for the turbine. Kinetic and potential energy effects can be ignored. Let $T_{0}=77^{\circ} \mathrm{F}, p_{0}=1 \mathrm{atm}.$
Verified answer
biology
Evaluate each integral. $\int \frac{2 x-1}{(x+4)(x+1)} d x$
Verified answer
physics
Was there a stage in the development of atomic physics in which models played a role comparable to that now played by models in nuclear physics? Are models used now in atomic physics?
Verified answer