# 6.1.2.16 IfcRampTypeEnum

## 6.1.2.16.1 Semantic definition

This enumeration defines the basic configuration of the ramp type in terms of the number and shape of ramp flights, as shown in Figure 1. The type also distinguished turns by landings. In addition the subdivision of the straight and changing direction ramps is included. The ramp configurations are given for ramps without and with one and two landings.

Ramps which are subdivided into more than two landings, or ramps with non-regular shapes are to be defined with type being USERDEFINED or NOTDEFINED.

## 6.1.2.16.3 Formal representation

TYPE IfcRampTypeEnum = ENUMERATION OF
(HALF_TURN_RAMP
,QUARTER_TURN_RAMP
,SPIRAL_RAMP
,STRAIGHT_RUN_RAMP
,TWO_QUARTER_TURN_RAMP
,TWO_STRAIGHT_RUN_RAMP
,USERDEFINED
,NOTDEFINED);
END_TYPE;