# Heavy civil construction tutor that knows about dozers and cut and fill sections and Average Haul Distances.

User Generated

wnxbo192

Engineering

Australian National University

## Description

The questions attached needs a tutor that knows about heavy civil construction which includes topics such as dozers, cut and fill sections and Average Haul Distances. Please only heavy civil constructions tutors reply. Thank you.

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Mass Diagram Exercise (Contd from Previous Class Handout) In the last class, you obtained the table for Mass Diagrams and after plotting, you should have the following Mass Diagram. By analyzing the mass diagram and the given elevation profile, determine the quantities, average haul distance, and average haul grades if you were to use dozers and scraper to move dirt in the first (left) haul segment. Elevations/ Profile 20 Elevation (ft) 15 10 5 0 -5 0 200 400 600 800 1000 1200 800 1000 1200 800 1000 1200 -10 -15 Axis Title Elevations/ Profile 20 10 5 400 600 -10 -15 Axis Title Volume (bcy) Mass Diagram 12000 10000 8000 6000 4000 2000 0 -2000 0 -4000 -6000 -8000 200 400 600 Choice of Equipment and Distance: 200 1. ______ / _____ft -5 0 2. _______/ _____ft 0 Length of Balance Line = ________ft Elevation (ft) 15 Station (ft) Step 1: Select length of balance line and draw on Mass Diagram for the left part of it. This divides that bump into two parts. Step 2: Estimate areas and quantities of the two parts, to be taken care of by ______ and ______. Obtain Average Haul Distances (and Quantities to move) from this step. Step 3: Estimate average haul grade by dividing cut and fill sections by two (each) in the profile drawing; taking their difference in elevation; and dividing by Average Haul Distance. You have to do this for each haul, which is why two elevation drawings are provided. SOLUTION: Step 1: Draw Balance Line Step 2: Determine Quantities and Areas For Area Calculations. Station 0 100 200 300 400 500 600 700 800 900 1000 Volume 0 2359 5563 8980 9864 7149 1749 -3386 -5592 -5492 -1725 Step 3: Average Haul Grade: Find change in elevations by projecting on to the elevation profile. 1. Project onto elevation profile from end of haul segments 2. Roughly divide the haul and cut areas in the elevation into two with horizontal lines. 3. Obtain difference in elevation between those two lines for each segment 4. Divide the change in elevation by average haul distance. Elevations/ Profile 20 Elevation (ft) 15 10 5 0 0 200 400 600 800 1000 1200 800 1000 1200 -5 -10 -15 Axis Title Mass Diagram 12000 10000 8000 Volume (bcy) 6000 4000 2000 0 0 200 400 600 -2000 -4000 -6000 -8000 Station (ft)
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## Explanation & Answer

Hey buddy! This is my final answers and solutions to your questions. Please let me know if you want me to revise anything. I just followed the instructions given in the problem. Have a nice day!

Mass Diagram Exercise (Contd from Previous Class Handout)
In the last class, you obtained the table for Mass Diagrams and after plotting, you should have the
following Mass Diagram. By analyzing the mass diagram and the given elevation profile, determine
the quantities, average haul distance, and average haul grades if you were to use dozers and scraper
to move dirt in the first (left) haul segment.

Choice of Equipment and
Distance:
1. Dozer / 328 ft
2. Scraper / 597 ft
Length of Balance Line
(Average Haul Distance):
Dozer: 224 ft; Scraper: 348
ft

Step 1: Select length of balance line and draw on Mass Diagram for the left part of it. This divides
that bump into two parts.
Step 2: Estimate areas and quantities of the two parts, to be taken care of by ______ and ______. Obtain
Average Haul Distances (and Quantities to move) from this step.
Step 3: Estimate average haul grade by dividing cut and fill sections by two (each) in the profile
drawing; taking their difference in elevation; and dividing by Average Haul Distance. You have to do
this for each haul, which is why two elevation drawings are provided.

SOLUTION IF DOZERS ARE USED
Step 1: Draw Balance Line
Balance lines have to be drawn to set the operational limitations of the equipment being used. In
the case of our problem, a dozer can move dirt at a haul distance of 328 feet or 100 meters.
Geogebra Classic was used to accurately position the 328-ft line segment with its endpoints
intersecting the mass diagram. Take n...

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