Figure 18.5 One of the levelled steel plates exactly levelled and cast in the pit floor to support the chassis dynamometer (one per dynamometer HD bolt location)
The need to run subfloor cable and ventilation ducts, between the control room and the pit and the drive cabinets and the pit requires preplanning and collaboration between the project engineer and builder, it can also complicate the task of creating a watertight seal against ground water. Normally there will be the following subfloor ducts: