Reinforced concrete quadrilateral section - rcqs

This is a section frequently adopted for the modelling of reinforced concrete quadrilateral columns.

Materials and Dimensions

Three different materials can be defined; longitudinal reinforcement, transverse reinforcement, concrete.

The required dimensions are as follows:

• Side 1. The default value is 0.45 m
• Side 2. The default value is 0.45 m
• Side 3. The default value is 0.45 m
• Side 4. The default value is 0.45 m
• Angle. The default value is 70 ͦ
• Cover Thickness. The default value is 0.025 m

Reinforcement

Longitudinal reinforcement bars can be defined in two different ways:

1. by editing the reinforcement pattern;
2. by entering the respective area and sectional coordinates (the latter being defined in the local coordinate system of the section).

Further, the transverse reinforcement may be specified, in terms of the stirrups' diameters and legs, as well as the distance between them.

Important: Re-bar distances d3 and d2 are to be measured from the bottom left corner of the section.

FRP Strengthening

FRP wrapping may be assigned by selecting the FRP Wrap from a list of the most common products found in the internet, or by introducing user defined values.

Notes

1. The confined concrete region is automatically computed by the program using the R/C cover thickness.
2. All re-bars must be located within the confined concrete region.