The use of building components manufactured with lightweight aggregate will allow more building products to be carried on the same truck when compared to heavy building products. This will decrease the truckloads required to deliver the same volume of product. Less trucks on the road reduces the pollutants emitted from transportation as well as reducing traffic congestion. Switching from heavyweight concrete masonry units to lightweight concrete masonry units saves truck miles as illustrated below.
Table 13.3 Lightweight Concrete Masonry Units Saves Truck Miles
|
ITEM |
Normalweight |
Lightweight |
Difference |
|
Quantity of 8” on Job |
100,000 |
100,000 |
0 |
|
Weight of CMU (lbs) |
38 |
26 |
12 pounds less |
|
Truck capacity (lbs) |
32,000 |
32,000 |
0 |
|
Units per load |
842 |
1,230 |
388 more block per load |
|
Wall area per load (sq ft) |
748 |
1,093 |
345 more sq ft of wall per load |
|
Number of truckloads required |
119 |
82 |
37 less truckloads |
|
Distance to job (miles) |
100 |
100 |
0 |
|
Total miles traveled |
5,950 |
4,100 |
1850 less truck miles traveled |
|
Cost @ $1.85 per mile |
$11,900 |
$8,200 |
$3,700 savings in trucking cost |
|
Delivery cost per block |
$0.12 |
$0.08 |
$0.04 savings per block |
Energy Performance
Sustainability
Workforce Sustainability – Ergonomics