CircularHollow2D 2D Hollow Circular Section Syntax Text Only1 2 3 4 5 6 7section CircularHollow2D (1) (2) (3) (4) [5] [6] # (1) int, unique section tag # (2) double, radius # (3) double, thickness # (4) int, material tag # [5] int, number of integration points for half circle, default: 6 # [6] double, eccentricity/location, default: 0.0 Remarks The eccentricity is measured from the centre of the section.