Calculate roller production, Civil Engineering

Assignment Help:

Calculate Roller Production

An excavating contractor determined through a test strip, that a smooth steel-wheel vibrating roller compactor operating at 3-mph can compact a 6-inch layer of borrow material to a proper density in four passes. The width of the smooth steel drum is 8.0-ft and operates 50-min per hour.   The number of compacting rollers required to maintain a material delivery rate of 540-bank cubic yards per hour is most nearly (1 bank cubic yard = 0.83 compacted cubic yards):

Solution: Calculate roller production.

Step 1: Compute a conversion factor to standardize the various units of measure:

(5280 ft/mile) x (1 cubic yard / 27 cubic feet) x (1 foot / 12 inches) = 5280/27/12 = 16.3

Step 2: Compute compacted cubic yards (CCY) per hour:

Compacted cubic yards per hour = (16.3 x 8-ft x 3-mph x 6-inch x 50-min/60-min) ÷ 4 passes = 489 CCY/hr

Step 3: Compute compacted cubic yards (CCY) per hour to bank cubic yards (BCY)

489-CCY/hr ÷ 0.83-CCY/BCY = 589.2 bank cubic yards per hour

Step 4: Compute the number of roller compactors needed.

Thus, 540 BCY/hr ÷ 589.2 BCU/hr = 0.92 < 1-roller compactor  

Therefore, only one roller is required to keep up with the delivery of borrow material.


Related Discussions:- Calculate roller production

Find the youngs modulus of the rod, Find the Youngs modulus of the rod: ...

Find the Youngs modulus of the rod: A composite rod is made by joining a copper rod end to end with a second rod of different material but of same cross-section. At 25oC, the

Why nautical mile is different from statute mile, One nautical mile is desc...

One nautical mile is described by one latitude minute of arc (there are 60 like minutes to a degree). This equals 1852 meters, and roughly (but coincidentally) 2000 yards or 6000 f

Third law of thermodynamics, Is there any application by using the third la...

Is there any application by using the third law of thermodynamics. A Actual application without explained the calculation

Calculate the uniform pressure on the soil, The plan of a proposed spoil he...

The plan of a proposed spoil heap is shown in Fig. The heap will stand on a thick deposit of soft clay with E-value 15 MN/m 2 . The uniform pressure on the soil may be suppose as 1

Explain pressure balance method and compressed air method, Pressure balance...

Pressure balance method vs. compressed air method in pipe jacking Pressure balance method generally requires the use of mechanically operated tunnel-boring machine at its cutti

Function of waterproof membrane for concrete carriageway, Q. Function of wa...

Q. Function of waterproof (or separation) membrane for concrete carriageway A layer of waterproof (or separation) membrane is usually placed between sub-base and concrete slab

Explain Fluid mechanics or properties - specific gravity, Fluid Mechanics o...

Fluid Mechanics or Properties - Specific Gravity Dimensionless ratio of a fluid's density to some standard reference density. For liquids and solids, the reference density is p

Why we need a high strength concrete in prestressing, Why we need a high st...

Why we need a high strength concrete in prestressing There is another aspect to why we need a high strength concrete in prestressing. Prestressed concrete is subjected to high

Average heating season outside temperature, Produce a manual determination ...

Produce a manual determination to determine the instantaneous rate of heat loss (kW) through one part of the fabric (eg roof, glazed area, wall) based on an internal building desig

Stone, Explain briefly physical classifications of stone

Explain briefly physical classifications of stone

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd