Hi Guys, busy calculating how many loads of 19mm and 9.5mm road stone I need to transport to a job site 340km away from my home. Will be able to transport 30 tonnes at a time with my truck.

OK, the road is 45KM long, 9 metres wide. In the Bill of Quantities, the 19mm stones goes on as one layer and the 9.5mm stone as another layer on top over the entire 45 KM road.

The specific gravity for the 19mm stone and 9.5mm stone ranges between 1.55 and 1.65, so lets use 1.6 as a standard to keep it simple. I need to calculate the exact amount of loads required for each type of stone to cover the entire road. These stones are spread with a chip spreader so they are basically evenly spread.

My thinking is like this, feel free to give me some insight:

1. OK, 45000 metres long road x 9 metre width x 0.019M (stone) = 7695 Cubic metres

2. 7695 Cubic metres x 1.6 SG of material = 12312 Tonnes

3. 12312 Tonnes divide by 30 tonnes per load = 410 Loads

That is my thought on the 19mm stone , now for the 9.5 mm stone:

1. 45000 metres x 9 metres x 0.0095 = 3847.5 Cubic metres

2. 3847.5 Cubic metres x 1.6 SG of material = 6156 Tonnes

3. 6156 Tonnes divide by 30 tonnes per load = 205.2 Loads

Please give me some input guys, much appreciated.

Regards

Cedric

OK, the road is 45KM long, 9 metres wide. In the Bill of Quantities, the 19mm stones goes on as one layer and the 9.5mm stone as another layer on top over the entire 45 KM road.

The specific gravity for the 19mm stone and 9.5mm stone ranges between 1.55 and 1.65, so lets use 1.6 as a standard to keep it simple. I need to calculate the exact amount of loads required for each type of stone to cover the entire road. These stones are spread with a chip spreader so they are basically evenly spread.

My thinking is like this, feel free to give me some insight:

1. OK, 45000 metres long road x 9 metre width x 0.019M (stone) = 7695 Cubic metres

2. 7695 Cubic metres x 1.6 SG of material = 12312 Tonnes

3. 12312 Tonnes divide by 30 tonnes per load = 410 Loads

That is my thought on the 19mm stone , now for the 9.5 mm stone:

1. 45000 metres x 9 metres x 0.0095 = 3847.5 Cubic metres

2. 3847.5 Cubic metres x 1.6 SG of material = 6156 Tonnes

3. 6156 Tonnes divide by 30 tonnes per load = 205.2 Loads

Please give me some input guys, much appreciated.

Regards

Cedric

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