The development length of a bar is _______.
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Determine the casting-position modification factor, ψt, for…
Determine the casting-position modification factor, ψt, for a rectangular beam with b = 16 in. and d = 24 in., three epoxy-coated No. 7 Grade 60 tension-reinforcement bars placed in the top of the beam, and No. 4 Grade 60 stirrups located every 10 in. along the span. Assume 6,000-psi lightweight concrete and a clear cover of 1.75 in.
Verb list: escribir – comprar – salir – desayunar – beber -…
Verb list: escribir – comprar – salir – desayunar – beber – regresar Ay, mami, ¡qué día tan intenso ayer! Por la mañana, yo [q34] de casa tarde sin poder comer. Paula solo [q35] tostadas. Entonces, a las 2:30, Paula y yo tuvimos hambre y nosotras [q36] un sándwich de pollo por 12 dólares en la cafetería. Después, yo [q37] un café con una tarta de chocolate. A las 5:30, mis amigos Paula y Juan [q38] a casa para preparar la cena. Y tú, ¿[q39] tu composición de español en la biblioteca o en tu casa?
Determine the bar-spacing factor, cb, for a simply supported…
Determine the bar-spacing factor, cb, for a simply supported rectangular beam with b = 24 in. and No. 3 stirrups. This beam has three No. 7 bars as longitudinal reinforcement. The clear cover is 1.5 in.
Epoxy-coated or galvanized reinforcement is used to increase…
Epoxy-coated or galvanized reinforcement is used to increase corrosion problems.
Concrete cover may be decreased to increase a member’s fire…
Concrete cover may be decreased to increase a member’s fire resistance.
A rectangular beam has a cross section of b = 18 in., h = 24…
A rectangular beam has a cross section of b = 18 in., h = 24 in., and d = 21.5 in. It is reinforced with five No. 5 Grade 60 bars. The concrete strength is 6,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups satisfying ACI 318-14 Sections 9.7.6.2.2 and 9.6.3.3. Determine the strength φMn for this beam.
The hardest way to test the bond strength of bars in a labor…
The hardest way to test the bond strength of bars in a laboratory is by the pull-out test.
A smooth bar embedded in concrete develops bond by _______ b…
A smooth bar embedded in concrete develops bond by _______ between the concrete and the bar and by a small amount of _______.
A rectangular beam has a cross section of b = 18 in., h = 30…
A rectangular beam has a cross section of b = 18 in., h = 30 in., and d = 27.5 in. It is reinforced with five No. 5 Grade 60 bars. The concrete strength is 8,800 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the modulus of rupture of the concrete, fr.