|
|
|
Unique situations found in some commercial structures: |
|
| Concrete Core Sampls | |
| The concrete from which these 5" core samples were taken was reinforced with one-inch rebar. |
 |
| Ventilation Fans | |
| (Notice the flashlight and chairs for size and perspective) | |
 |
30 hp 83,700 cfm @ 1" tsp Return Fan |
|
150 hp 91,400 cfm @ 6" tsp Supply Fan |
 |
 |
Close-up of 150 hp Motor |
| Return and Intake Air Ducts | |
| 36" Below Grade Cold Air Return Air Duct |
 |
 |
54" Below Grade Fresh air Intake Duct |