You can analyze and design a masonry column using either the Allowable Stress Design (ASD) or Strength Design methods. Columns can be pinned-pinned, fixed-pinned or fixed only.

Double click anywhere that the cursor turns into a finger pointer to edit the object under the cursor.

Right click over an object to see a menu.

General

• Equations used in the design are shown as part of the report.

Applied Loads

• The sign conventions for the external loads are as follows:
  Vertical Point LoadsDown is positive
  Moment LoadsCounter-clockwise is positive
  Horizontal Point LoadsLeft is positive
  Horizontal Distributed LoadsLeft is positive

Column Design

• Masonry design is based on concrete masonry.
• Minimum spacing between rebar is not checked for 1 1/2″ or 1 1/2 db.

Building Codes

• IBC 2012

  Standard Service Load Combinations – Section 1605.3.1

  Alternate Service Load Combinations – Section 1605.3.2

  It is assumed that wind loads used in the alternate service load combinations are calculated by section 1609 or the ASCE 7.

  Standard Design Load Combinations – Section 1605.2.1

  It is assumed that the seismic loads are calculated per the code and are strength level forces.

• IBC 2009

  Standard Service Load Combinations – Section 1605.3.1

  Alternate Service Load Combinations – Section 1605.3.2

  It is assumed that wind loads used in the alternate service load combinations are calculated by section 1609 or the ASCE 7.

  Standard Design Load Combinations – Section 1605.2.1

  It is assumed that the seismic loads are calculated per the code and are strength level forces.

• IBC 2006

  Standard Service Load Combinations – Section 1605.3.1

  Alternate Service Load Combinations – Section 1605.3.2

  It is assumed that wind loads used in the alternate service load combinations are calculated by section 1609 or the ASCE 7.

  Standard Design Load Combinations – Section 1605.2.1

  It is assumed that the seismic loads are calculated per the code and are strength level forces.

• IBC 2003

  Standard Service Load Combinations – ASCE 7, Section 2.4.1

  Alternate Service Load Combinations – Section 1605.3.2

  It is assumed that wind loads used in the alternate service load combinations are calculated by section 1609 or the ASCE 7.

  Standard Design Load Combinations – ASCE 7, Section 2.3.3

  It is assumed that the seismic loads are calculated per the code and are strength level forces.

• IBC 2000

  Standard Service Load Combinations – ASCE 7, Section 2.4.1

  Alternate Service Load Combinations – Section 1605.3.2

  It is assumed that wind loads used in the alternate service load combinations are calculated by section 1609 or the ASCE 7.

  Standard Design Load Combinations – ASCE 7, Section 2.3.3

  It is assumed that the seismic loads are calculated per the code and are strength level forces.

• UBC 1997

  Only Allowable Stress Design is available for design.

  Standard Service Load Combinations – Section 1612.3.1

  Alternate Service Load Combinations – Section 1612.3.2

  It is assumed that the seismic loads are calculated per the code and are strength level forces.

  Masonry Fa, Fb, and Fv are reduced by 1/2 if there is no special inspection and ASD is used.

Menus

File Menu

Revert to Saved Version…
Reload your last saved version from the server. This will remove any changes that you have made since your last save.

Save
Save your calculation to the server overwriting any previously saved version on the server.

Save As
Save a copy of your current calculation to the server and make the copy your current calculation.

Return to Projects
Return to the Projects page.

Geometry Menu

Edit Column…

Edit the column height, thickness, rebar size, etc.

Loads Menu

Vertical Point Loads…
Moment Loads…
Horizontal Point Loads 1…
Horizontal Point Loads 2…
Horizontal Distributed Loads…
Set the loads for your column. Use the arrow buttons to indicate the load direction.

The Ecc From CL distance in the Vertical Point Loads dialog is measured from the centerline of the column.

The Location in the Horizontal Point Loads dialog are measured from the base of the column.

The Top Location and Base Location in the Horizontal Distributed Loads dialog are measured from the base of the column.

Design Menu

Calculate Now…
Analyze and design the column and view the report.

The Show Controlling Load Combinations Calculations Only check box in the Report Options dialog controls whether only the controlling load combination calculations are shown or whether all load combination calculations are shown. Unchecking the check box will show all load combinations but will make for a long report.

Heading…
Enter heading information that will be shown at the beginning of the report.

Material Properties…
Set the masonry and steel properties. Please see the Definitions page for the definitions for this dialog box.

Design Criteria…
Set the service and design load combinations and masonry design.

Service Load Combinations are used for ASD calculations. Design Load Combinations are used for Strength design. Only the Standard Load Combinations are allowed for Strength Design.

Select Service Load Combinations…
Select Design Load Combinations…
Select the service and design load combinations that you wish to apply to the column. Only the checked combinations will be used. If you change the building code or load combination types in the Design Criteria dialog, these combinations will change.

Help Menu
View the documentation and/or send an email to our support staff.

Projects Menu
Go to the Projects page.

Account Menu
Go to the Account Settings page.

Logout Menu
Logout of Daystar iStructural.com.

Toolbar
You can use the buttons on the toolbar to speed up access to some commonly used commands. Hold your mouse over an icon for about 1/2 second to see a pop-up of what the icon does.

Buttons from left to right:
Save
Edit Column…
Vertical Point Loads…
Moment Loads…
Horizontal Point Loads 1…
Horizontal Point Loads 2…
Horizontal Distributed Loads…
Calculate Now…