Tools › Civil and Geotechnical › Surveying and Earthwork › Earthwork Volumes and Mass Haul › Example
NAVEDTRA 14337 Table 10-2: cumulative yardage of a 2,000-ft road and its mass diagram with a 500-ft free haul
| Tool | Earthwork Volumes and Mass Haul |
| Source | Naval Education and Training Professional Development and Technology Center (1994). Engineering Aid 2. Nonresident Training Course NAVEDTRA 14337, U.S. Navy, Pensacola, FL. Chapter 10, Table 10-2 (table of cumulative yardage) and Figure 10-10 (profile and mass diagram with the 500-ft haul-limit lines); Department of the Army (1985). Construction Surveying. Field Manual FM 5-233, Washington, DC. Chapter 4 (areas) and chapter 3 (curves). |
| Level | Undergraduate |
Problem
Cross sections of a road were taken at every 100-ft station from 0+00 to 20+00 and at the plus stations where the cut or the fill runs out (3+50, 9+08, 10+50, 15+07, 16+50); the cut and fill end areas are those of the manual's Table 10-2 (186 ft² of cut at 0+00 down to 0 at 3+50, 186 ft² of fill at 7+00, both cut and fill at 9+00, 14+00, 15+00 and 20+00). Compute the volumes between stations by the average-end-area formula in cubic yards, the cumulative-yardage column, the balance points of the mass diagram, and, with a free-haul distance of 500 ft, the free-haul and overhauled volumes and the overhaul in station-yards of each loop.
Inputs to Enter
- 26 stations 0+00 … 20+00 with the Table 10-2 end areas (cut 186, 65, 44, 22, 0 … ; fill 0 … 22, 44, 65, 186, 119, 46 …), average end area, fill factor 1.00 (no soil conversion, as in the table)
- Free-haul distance 500 ft, overhaul rate 0.50 per station-yard (illustrative), no borrow cost (no limit of economic haul)
Answers
- Volumes: 0+00 to 1+00 cut 100 (186 + 65)/2/27 = 464.8 yd³ (table +465); 1+00 to 2+00 201.9 (+202); 7+00 to 8+00 fill 564.8 (−563); every printed volume reproduced within 1 yd³ except the 15+07 fill, printed −8 where the arithmetic gives 2.9
- Cumulative: +465, +667, +789, +809 at 3+50 (the first grade point), back to 0 at 7+00, −862 at 10+50, +491 at 16+50, −416 at 20+00 (exact arithmetic −408.2: the manual's rounding accumulates 7.8 yd³)
- Balance points 0+00, 7+00, 13+99, 18+73; three closed loops (809 yd³ forward, 865 backward, 497 forward) and an open end with 408 yd³ of borrow
- Loop 1: the 500-ft free-haul line fits at +465 from 1+00 to 6+00 (the line drawn in Figure 10-10), free haul 344 yd³, overhauled 465 yd³ with an average haul of 600 ft (centroids at 0+50 and 6+50), overhaul 465 station-yd; loop 2 overhaul 515 station-yd; loop 3 (474 ft) all free haul; total 980 station-yd
- Totals: cut 2,611 yd³, fill 3,019 yd³, net deficit 408 yd³
Notes
The tool's default inputs are this table; press Submit. Switch the sub-tool select to see the FM 5-233 chord-definition curve (PI 18+00, I 45°, D 15°: R 383.07, T 158.67, L 300.00, E 31.56, M 29.16, LC 293.19 ft, PC 16+41.33, PT 19+41.33), its Figure 3-20 sag curve (−10 % to +5 %, 600 ft, PVI 90+00 at 50.00: V_m 11.25, low point 91+00 at 60.00, second differences 2.50) and the manual's station 305 cross section (coordinate area 540.3 ft², three-level formula 507.71 ft²). The haul numbers come from the tool's exact piecewise-linear treatment of the ordinate checked by scipy (test_earthwork_volumes.php); the manual draws the line by eye and wastes and borrows the ends of its first two loops instead of overhauling.