QUESTION 15 A 20 m normal weight concrete pile is driven into the ground. How long will it take in seconds for the first blow to reach the bottom and return to the top?

A wood beam carries the loading shown in the figure. calculate the magnitude of the bending stress (in Pa) on a section 2.59 m from A if P = 5112 N, W = 2120 N/m, a = 0.78 m, b = 1.28 m, c = 1.03 m, L = 84 mm and h = 212 mm. Round off the final answer to two decimal places. W P mpantin 커다 C b → Add your answer

2. Determine the balanced hauls and indicate the direction of haul for the mass diagram shown below. The LPH is 4,000 ft. Also, show on the profile what cut sections will be hauled to what fill sections, and indicate any borrow or waste sections. Calculate the average haul distance for each. balanced haul.. 75000 50000 25000 0 -25000 -50000 -75000 0 Distance along centerline, ft 14000 15000

A column in the upper story of a building is subjected to a compressive load from the followingsources: dead load = 30.8 kips, occupancy live load = 1.7 kips, roof live load = 18.7 kips, and snowload = 19.7 kips.a. If load and resistance factor design (LRFD) is used, determine the factored load (requiredstrength) to be used in the design of the column. Which ASCE load combination controls?b. What is the required design strength of the column?c. What is the required nominal strength of the column for a resistance factor phi of0.9?d. If allowable strength design (ASD), determine the required load capacity (requiredstrength) to be used in the design of the column. Which ASCE load combination controls.e. What is the required nominal strength of the column for a safety factor Omega of 1.67.