|-7.5 ft 12 ft |-9- 750 lb/ft² x 아12 ft 1217 lb/ft²

Two solid cylindrical rods (1) and (2) are joined together at flange B and loaded as shown. If the normal stress in each rod must be limited to 280 MPa, determine the minimum diameter d₂ required for rod (2). 80 KN d₁ O 18.2 mm O 28.7 mm O 24.6 mm O 30.2 mm O 21.7 mm 140 KN 140 KN B (2)

An engineer proposes as a solution to the problem of the dam, to reinforce it according to the figure shown, but now the critical height h of the water level must be determined, which would make the indicated concrete reinforcement on the verge of overturning due to the water pressure. The density of the concrete 2.40 Mg/m^3, H=18m and d= 6m. Hints: use typical values ​​of water, consider one meter width of the dam to then generalize and don't forget point A.

6. Determine the critical height of the water level that causes the concrete gravity dam to be on the verge of tipping over. Assume water also seeps under the base of the dam and produces a uniform pressure under the dam. The density of concrete is pc = 2400 kg/m³. Hint: Work the problem using a 1-m width of the dam. 18 m h -6m

For the dam given in the figure, compute for the total horizontal load, total vertical load, the factors of safety against sliding and overturning, the resultant of the forces, its location, and the total moment at the toe.  coefficient of friction is 1.5, unit weight ng concrete is 2400 kg/m^3.