Tutorial MHD
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The document provides details on calculating earthwork volumes and costs for a road construction project based on a mass haul diagram (MHD). Key information from the MHD includes: - Freehaul distance of 600m and balance line at 400 cubic meters - Freehaul volume of 1500 cubic meters over 600m for a cost of RM9000 - Haul volume of 3075 cubic meters over 610m (average haul distance) for a cost of RM18,757.50 - Overhaul volume of 1575 cubic meters over 750m (average overhaul distance) for a cost of RM2362.50 Total estimated cost of earthwork is RM176,375.
![[object Object],Chainage , m Cut volume (m 3 ) Fill volume (m 3 ) (+ 10 % shrinkage) Corrected volume (+) CUT (-) FILL Cumulative volumes,m 3 0 100 290 200 760 300 1680 400 620 480 120 500 20 600 110 700 350 800 600 900 780 1000 690 1100 400 1200 120 0 0 290 290 760 1050 1680 2730 620 3350 120 3470 -20 3450 -110 3340 -350 2990 -600 2390 -780 1610 -690 920 -400 520 -120 400 + +](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Tutorial MHD
- 1. MASS HAUL DIAGRAM tutorial 3 PREPARED BY : KMASZ
- 5. Cumulative volume m 3 Chainage ,m Draw a MHD using the scale below: X axis : 1 cm = 100 m Y axis: 1 cm = 250 m 3 X axis : 1 cm = 100 m Y axis: 1 cm = 250 m 3 STEP 1
- 7. Freehaul volume = 6cm x 250 m 3 = 1500 m 3 Freehaul distance = 600m (given) Axis y; Measurement line = 6 cm Freehaul = Freehaul volume x freehaul distance stn.m 100 Freehaul = 1500 x 600 = 9000 stn.m 100 Axis x; Measurement line = 6 cm Freehaul distance = 6cm x 100 m = 600 m Cumulative volume m 3 Chainage ,m E F 480 m – max point STEP 3 – determine free haul
- 8. Axis y; Measurement line AB = 12.3 cm Haul volume = 12.3cm x 250 m 3 = 3075 m 3 Axis x; Measurement line EF = 6.1 cm How to determine average haul distance??? Average haul distance = Line AB /2 = 12.3 / 2 = 6.15 A B At the point line parallel with axis-x = Line EF Average haul distance = 6.1 cm x 100 m = 610 m Haul = Haul volume x average haul distance stn.m 100 Haul = 3075 x 610 = 18757.5 stn.m 100 Chainage ,m Cumulative volume m 3 E F 480 m – max point STEP 4 – determine haul
- 9. Axis y; Measurement line AB = 6.3 cm Overhaul volume = 6.3cm x 250 m 3 = 1575 m 3 How to determine average over haul distance??? Average overhaul distance = Line AB /2 = 6.3 / 2 = 3.15 At the point line parallel with axis-x = Line EF A B Axis x; Measurement line EF = 7.5 cm Average overhaul distance = 7.5 cm x 100 m = 750 m Overhaul = Overhaul volume (average overhaul distance – freehaul distance) stn.m 100 Overhaul = 1575 (750 – 600) = 2362.5 stn.m 100 STEP 5 – determine overhaul Chainage ,m Cumulative volume m 3 E F 480 m – max point
- 12. TOTAL COST OF EARTHWORK Freehaul prices in freehaul distance = freehaul volume x freehaul distance x freehaul prices = (22 000 + 10 000) x 200 x RM1.25/200 = RM 40 000 Overhaul prices in freehaul distance = overhaul volume x freehaul distance x freehaul prices = (18 000 + 21 500) x 200 x RM1.25/200 = RM 49 375 Overhaul prices in overhaul distance = overhaul volume x ( average overhaul distance – freehaul distance ) x overhaul prices = [(18 000 x (245 – 200) x (RM1.25 + RM0.40)/100) + (21 500x (360 – 200) x (RM1.25 + RM0.40)/100)] =RM 70 125 Borrow prices = borrow volume x borrow prices = 22500 x RM 0.75 = RM 16 875 TOTAL COST OF EARTHWORK = RM 176 375