Chapter 10, Problem 6RQ

Assume you’re bringing in fill on a city lot that measures 500 meters by 1000 meter. Becauseof a mistake in grade, your estimate of imported soil is wrong. It leaves the entire site 5 cmbelow the specified finished grade. How much more soil is needed to correct the 5 cm mistake?

What should be the volume of the pit that remains in theborrow area after all the material required for the fill hasbeen removed?

What is the total cost of 1.2 cubic yards of soil if it sells for $44 per cubic yard?

using the data given in the image uploaded. After 10 yr of consolidation, an additional areal fill load of 49 kpa is placed on the site. compute the amount of additional settlement and prepare a plot of the settlement.

how did you get 1.025 for solving the pre consolidation?

A proposed earth embankment requires 60,000 cubic meters of soil. The soil will be compacted to a void ratio of 0.85. Two borrow pits designated as A and B are available near the site. The void ratio of the soil in each pit and the estimated cost per cubic meter for moving the soil to the site are as shown below. Pit Void Ratio Cost ($/m3) A 1.10 5.00 B 1.80 3.70 Which will have the lowest cost to move and be the most economical to use?

In construction of a highway section, the earthwork information is available as shown in the table below. The free-haul distance is 500m and the swelling factor is 20%. Draw the mass haul diagram between station 3 + 00 and station 9 + 00 and determine the extra compensation that must be paid to the contractor when the overhaul price is $200/m3 station.

The boring data shown on the drawings for two bridge piers indicated the presence of boulders at the site. The successful contractor included in his bid the cost of cofferdams to surround the piers and to permit removal of these boulders. When work started, the contractor decided to try to get along without the use of cofferdams, and he succeeded. Does the contractor have to make a refund to the owner because of the decrease in the actual cost of doing the work? Explain.

Calculate the cost per cubic yard to place concrete using each of the alternatives described. The work in both cases consists of placing 140 cubic yards of concrete in footings. a. Using a crane and bucket at a price of $225 per hour, including an operator, with a crew consisting of 6 laborers, a cement finisher, and a foreman. The concrete will be placed in 7 hours using this setup, and transportation of the crane costs $390. b. Using a concrete pump at a price of $295 per hour, including an operator and a crew consisting of 5 laborers, a cement finisher, and a foreman. With this setup, concrete is placed in 6 hours and transportation of the pump costs $290.