El IMC es un tipo de conducto que:
a. tiene un grosor de pared mayor que el del RMC.
b. tiene un grosor de pared menor que el de un conducto de paredes delgadas.
c. tiene un grosor de pared menor que el del RMC pero más grueso que el del EMT.
d. está fabricado en PVC.
c. tiene un grosor de pared menor que el del RMC pero más grueso que el del EMT.
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When installing multi-family services, the service disconnect _____.
a. must always be placed outside b. must always be placed indoors c. may be placed indoors under specific circumstances d. must be inaccessible to tenants
How are the switches in electrical circuits that control parallel loads connected? If the switch opens, what happens to the circuit?
What will be an ideal response?
There is a strong tendency among managers to put too much faith in the quantitative output
of a computer information system.
Indicate whether the statement is true or false.The reinforced concrete girder shown in Figure P7.44a is prestressed by a steel cable that induces a compression force of 450 kips with an eccentricity of 7 in. The external effect of the prestressing is to apply an axial force of 450 kips and equal end moment M P = 262.5 kip · ft at the ends of the girder (Figure P7.44b). The axial force causes the beam to shorten but produces no bending deflections. The end moments M P bend the beam upward (Figure P7.44c) so that the entire weight of the beam is supported at the ends, and the member acts as a simply supported beam. As the beam bends upward, the weight of the beam acts as a uniform load to produce downward deflection. Determine the initial camber of the beam at midspan immediately after the cable is tensioned. Note: Over time the
initial deflection will increase due to creep by a factor of approximately 100 to 200 percent. The deflection at midspan due to the two end moments equals ML 2 ?(8EI). Given: I = 46,656 in.4, A = 432 in. 2 , beam weight w G = 0.45 kip/ft, and E = 5000 kips/in. 2 .
