Grid

A Grid system used to define load geometry and location. Each row in the grid defines a point and magnitude along the load surface.

Notes: Load coordinates must be entered in a Clockwise order. Do NOT close the load shape with the last row entered in the grid.

X

Direction load point is located in a horizontal direction referenced from the origin of the localized surface.

Y

Direction load point is located in a vertical direction referenced from the origin of the localized surface.

Magnitude

Identifies the magnitude at a given point on the load.

Calculator

Use the calculator to ensure that special loads are generated with valid Geometry, i.e., all load magnitudes must reflect a “flat” surface.

For example, enter four rows of values as shown. Click on “Use” for the first three rows, then “blank out” or delete field X4. Click the Calculate button for the system to generate a valid value for field X4.

View the resulting Special Shaped load that might represent Snow Drift at the corner of a building with Parapets or adjoining buildings.

Grid Insert

Inserts a row in the grid that will be used to define the Special Shaped load.

Grid Delete

Deletes an existing row in the grid.

List

Descriptions of Load Types

Standard Controls:

§ OK, Cancel, Apply, Help

See also:

§ Surface Loading - Wall and Roof

§ Load Types

§ Design - Load Cases

§ Surface Loading (Wall or Roof) – Standard Shaped Loads