A simply supported beam with dimensions of b = 18 in., h = 22 in., d = 19.5 in., and L = 18 ft supports a uniform service (unfactored) dead load consisting of its own weight plus 1.2 kips/ft and a uniform service (unfactored) live load of 0.8 kips/ft. The concrete is normal-weight concrete. Determine the moment due to the factored loads, Mu.      

Suppose that a young couple has just had their first baby and they wish to ensure that enough money will be available to pay for their child’s college education. They decide to make deposits into an educational savings account on each of their daughter’s birthdays, starting with her first birthday. Assume that the educational savings account will return a constant 9%. The parents deposit $2,400 on their daughter’s first birthday and plan to increase the size of their deposits by 7% each year. Assuming that the parents have already made the deposit for their daughter’s 18th birthday, then the amount available for the daughter’s college expenses on her 18th birthday is closest to ________.

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“Mi hija no tiene hábitos saludables y estoy preocupado”. ¡No [q36]! Todos podemos hacer pequeños cambios para mejorar la calidad de vida.

A beam has dimensions of b = 16 in., h = 22 in., and d = 19.5 in. and is reinforced with 3 No. 8 bars. The concrete strength is 7,300 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the tensile force T in the reinforcement.

¿Qué quiere la anunciadora al hacer las preguntas?

A beam has dimensions of b = 14 in., h = 24 in., and d = 21.5 in. and is reinforced with 5 No. 7 bars. The concrete strength is 5,500 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the nominal moment capacity, Mn, of the beam.

If C represents the internal compressive force and T represents the internal tensile force in a singly-reinforced concrete beam that has no applied axial load, then _______.

MACARENA: Hola, José. ¿Qué tal tu viaje a Costa Rica? JOSÉ: Estupendo. Mi novia y yo pasamos una semana en las [q5] en el interior del país. Nos gusta mucho la playa, pero también nos encanta [q6] en caminos bonitos. MACARENA: ¡Qué bien! No sabía que os gustaba caminar y hacer vías ferratas. JOSÉ: Bueno, somos principiantes, pero es que hay muchas actividades para hacer allí… Nuestra excursión favorita fue cuando exploramos una [q7] con linternas. También nos encantan los animales y pudimos [q8] a caballo y [q9] las aves desde una distancia recomendada. MACARENA: ¡Me alegro! Estoy pensando en mis próximas vacaciones y quiero ir a un destino como Costa Rica, donde cuidar la [q10] es muy importante para el turismo. JOSÉ: Sí, ¡Costa Rica es un destino perfecto! El gobierno y la industria turística trabajan juntos para limitar la [q11] que dejan los turistas.

A beam has dimensions of b = 16 in., h = 30 in., and d = 27.5 in. and is reinforced with 5 No. 5 bars. The concrete strength is 7,600 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the depth to the neutral axis, c.