A mass haul diagram provides viewers with a graphical representation of the material moved . In particular, the diagram will showcase the amount of material that's been transported along the centerline. It also displays the distance that the materials travel while being transported.
Why mass haul diagram is important?
The use of mass haul diagrams helps designers and contractors understand where gross material movements occur and as key indicators used to compare the economies of alternative designs. ... They are used to analyze the following aspects of the design: Distance over which the cut and fill will balance.
What is mass haul diagram?
A mass haul diagram consists of two objects: a mass haul line, and a mass haul view . The mass haul line represents the free haul and overhaul volumes in cut and fill conditions along an alignment. ... When the mass haul line rises above the balance line, it indicates a region in which material is cut.
What does a mass diagram show?
Mass Diagram- A graphical representation of the cumulative amount of earthwork moved along the centerline and distances over which the earth and materials are to be transported .
How a mass haul diagram is used to calculate the earthwork quantities?
Mass diagrams (or mass-haul diagrams) are plots of the cumulative volumes of cut and fill along an alignment. ... The most economical way to handle the distribution of earthwork volumes can be determined from the diagram. The rising curve on the mass diagram indicates excavation and a descending curve indicates embankment.
How do you make a mass haul diagram?
- Select a material list.
- Select a material to display as mass haul line (Total Volume, Total Cut Volume, Total Fill Volume, Total Unusable Volume, and any other material associated with the material list).
- Specify a mass haul line style.
How do you calculate overhaul?
The Engineer will compute the overhaul quantity by multiplying the overhaul distance in Stations by the number of units of excavation in cubic yards hauled . The Engineer may use an analytical method in lieu of the mass diagram method to determine the overhaul.
How do you calculate cut and fill area?
Perhaps the simplest (but most time consuming) method is to plot the sections on gridded paper and count the grid cells of the cut and fill areas. Multiplying the cell count by the area represented by each of the grid cells gives the cut or fill area for the section.
What is Freehaul?
– Freehaul: Distance with which there is a fixed price for excavating, hauling, and dumping regardless of the distance moved . – Mass Haul Diagram: It is a diagram provides a suitable means for studying haul and overhaul to compute the total payment.
What is meant by free haul?
The distance every cubic yard is entitled to be moved without an additional charge for haul .
How do you calculate earthwork?
In this method Sections are drawn for Each Line of Value. Area of Cutting and Filling is found out for each Section with Trapezoidal Method or Nett Area Calculation Method. Then volume is determined by multiplying Average Area with Distance between Sections.
What is mass ordinate in earthwork?
10. August, 2011. Interpretation of the Mass Diagram: Positive mass ordinates can be considered. to be the excess volume of excavated material at a particular station . As material is used for embankment construction, the mass ordinates decrease.
What is average hauling distance?
Distribution Analysis of Earthwork Terminologies Haul Distance: distance from point of excavation to point where the material is to be tipped Average Haul Distance is the distance from the centre of gravity of the excavation to the centre of gravity of the tip Free-haul Distance: is the distance (usually specified ...
How do you calculate free haul volume?
From grade points, a segment the length of the free haul distance, which is parallel to the balance line, is dropped so that the ends of the segment just touch the mass haul line . The area enclosed within the segment and the mass haul line represents the free haul volume.
What is earthwork distribution analysis?
Distribution Analysis. Distribution analysis calculates the accumulation of excavation obtained and embankment required , Station by Station, over the length of a project. Distribution analysis helps the designer to determine if the earthwork is going to be balanced, borrowed, or wasted.
What is economic haul limit?
The limit of economic haul is reached when the cost of haul and the cost of excavation become equal . Beyond that point it is cheaper to waste the cut from one place and to fill the adjacent hollow with material taken from a nearby borrow pit.
