12 D 9 kips 9 kips 9 kips 9 kips - 30-- 6 @ 15'=90 30- P6.13

Q3. A beam is supported by a pin support and a cable. The cable runs continuously through a pulley. Determine the manitude of the horizontal and vertical reactions at the pin support and the magnitude of the tension force in the cable. ///// \\ \ \ \\ 3 m 20° 20° 3 m 3 m 250 N

PROBLEM 1: The 1500-kg beam ABC has fixed support at A and connected to beam BD by hinge at B. Beam BD has a mass of 2000 kg and supported by a cable at D. The cable is attached to the 20-cm-diameter pulley at E and pulled vertically at the other end, by tension T. Given: a = 1.5 m; b = 0.9 m; c = 1.8 m d = 0.6 m; e = 1.4 m; θ = 75°. 1. Calculate the required tension to maintain in equilibrium. (ANSWER: 12.830KN) 2. Calculate the moment reaction at A (ANSWER: 28.499) and the total reaction at A. (ANSWER: 22.192). 3. Calculate the vertical reaction at E. (ANSWER: 25.223)

Four standard concrete cylinders of 6-inchdiameter cross section were tested underuniformly increasing axial compressive loads 28days after casting concrete. The maximummeasured loads were 121,000 lbs, 116,700 lbs,128,800 lbs, and 119,100 lbs. What is the averagecompressive strength of this concrete in ksi?