Reinforcement Pattern Type

The following three pattern types are available:

• Radial
• Rectangle
• Custom

Radial Pattern

In the radial pattern, the bars are arranged in a circular pattern based on the following input parameters:

• Number of Bars
• Angle from X Axis - this is the angle of the first bar on the right side of the section. You'll notice as you increase the number of bars that the position of the right-most bar does not change.
• Cover Depth or Distance From Center
  • Cover Depth - distance from the outside edge of the section
  • Distance from Center - distance from the center of the section

EDIT COORDINATES

You can change the location of the reinforcements in the pattern by clicking on Edit Coordinates. Doing so will automatically change your Pattern Type to Custom. See below for more details on custom reinforcement patterns.

Rectangular Pattern

In the rectangular pattern, the bars are arranged based on the following input parameters:

• Peripheral bars - check the box to only include bars in the periphery (outside edge) of the pattern
• Number of Bars in X
• Number of Bars in Y
• Min Cover Depth

If you have a reinforcement pattern that has specific depth and length within the pile, this is specified in the Edit Pile Type dialog.

EDIT COORDINATES

You can change the location of the reinforcements in the pattern by clicking on Edit Coordinates. Doing so will automatically change your Pattern Type to Custom. See below for more details on custom reinforcement patterns.

Custom Pattern

In the custom pattern, the user needs to specify the number of bars and the coordinates of each bar.

If you have reinforcement pattern that has specific depth and length within the pile, this is specified in the Edit Pile Type dialog.

Ratio of Steel Reinforcement

For reinforcement patterns in reinforced concrete sections, a ratio of steel reinforcement is given. Specifically:

• Total Reinforcement Ratio - Ratio of total area of steel reinforcement to gross area of section
• Pattern Reinforcement Ratio - Ratio of area of steel reinforcement in pattern to gross area of section

This is calculated as follows:

where:

N_i is the number of rebars in pattern i,

A_r,i is the area of a rebar in pattern i

A_s is the area of cross-section