Civil and Environmental Engineering Answers

Solve PDE

A beam of length L is embeded at its left and simply supported at its
right. And

Why the procurement strategy is so important in construction?

design a reinforced concrete combined rectangular footing for two columns a and b located 3.60m apart. the sizes of columns are 400mm × 400mm and 600mm × 600mm and the loads of them are 1000kn and 1500kn respectively. the projection of the footing parallel to the length of the footing beyond the axis of the column a is limited to 590mm. the safe bearing capacity of the soil is 280 kn/m^2. use m20 concrete and fe415 steel

A ball A is thrown vertically upward from the top of a 30 m high building with an initial velocity of 5 m/s. At the same instant another ball B is thrown upward from the ground with an initial velocity of 61.1 ft/s. Determine the height (m) from the ground and the time (s) at which they pass.

A hollow cast-iron pole has an outside diameter of 450 mm and an inside
diameter of 350 mm. It is subjected to a compressive force of 1200 kN
throughout its length of 1.2 m. The pole is braced to prevent bending and
buckling. E = 100 GPa. (a) What is the resulting stress due to the
compressive force? (b) Calculate the total contraction of the member due
to the compressive force. (c) Find the load that would result to a total
compressive strain of 0.003 mm/mm.

A nationwide survey of 20,000 students by the university revealed that almost 78% disapprove of smoking. If 15 of these seniors are selected at random and asked their opinions are selected at random and asked their opinions, what is the probability that more than 11 but less than 14 disapprove of smoking? *

Amsterdam, February 2006. Wednesday morning, 9 AM, a large beer truck, full of beer, was driven onto the market square shown above. The driver of the truck suddenly felt the ground moving. “It just looked as if there was an earthquake”, he said. There was a tear of more than 10 meters in roof of the parking garage below and people were afraid that the parking garage would collapse. The truck could only be removed when the floor on which the truck was standing had been reinforced with supporting beams.
As a result of this an independent investigation will take place. Assume you have graduated and are part of the investigating team. What questions would you ask and what information would you require in order to recommend the best course of action?

A helicopter is moving horizontally at 90 km.p.h. at a height of 200 m towards a target on the ground,
which is intended to be shelled, Estimate the distance from the target , where the shell must be released in
order to hit the target.
Also find the velocity with which the shell hits the target and the direction of shell at the time of hitting
the target.