October 18, 2017

Updated Steel Joist Database now Available

The Steel Joist Institute (SJI) sizes and capacities from the 44th Edition Standard Specifications Load Tables and Weight Tables for Steel Joists and Joist Girders are now available in RISAFloor v12. There were no changes from the 43rd to the 44th Editions so you’ll see that these two are grouped together in RISAFloor. Prior versions of RISAFloor v12.0 include the steel joist values from the 42nd Edition Standard Specifications Load Tables and Weight Tables for Steel Joists and Joist Girders.

Staring in RISAFloor v12.0, there are now options for Steel Joist Databases which have different capacity values. The SJI Edition from which the values are determined is selected based on the Code specified on the Codes tab in the Model Settings.

Tags: RISAFloor, New, Steel Joists

January 7, 2016 | RISA-3D, RISAFloor, RISA-2D, New, Wood

Mechanically Graded Wood Design now Available

Mechanically graded wood materials have been added for the AWC NDS 2015 design code per Table 4C, and CSA O86-14 design code per tables 6.3.2 and 6.3.3. This specification includes the updated MEL and MSR design values. A Mechanically Graded material can be selected in the Material spreadsheet in the Wood tab. The user can choose any of the existing species that are applicable, per NDS table 4C Footnote 2, from the Species dropdown menu. The shear capacity design value, Fv, depends on the species selected for the material. There are 85 new grade options available in the Grade dropdown menu from the MSR and MEL tables in the code. The Custom Wood Properties dialog now allows the user to input more specific material. Mechanically Graded wood materials can be utilized in this dialog by choosing MEL or MSR in the Type dropdown menu. To access the Custom Wood Properties input dialogue, click the Custom Wood button on the Advanced tab. This can also be accessed In the Wood Material Properties spreadsheet by selecting Custom from the Type dropdown menu, and then click the ellipses in the Species cell. Additionally, a custom wood size factor can now be entered in…

February 15, 2022 | RISAFloor, New, Steel Joists, Joists

New Updates to Steel Joists in RISAFloor

As a floor-by-floor design software, RISAFloor includes robust features for the design of steel joists, including standard joists, long-span joists and composite joists. Version 16 of RISAFloor now includes design according to the latest specification (SJI 45th Edition) as well as expanded LH-series design tables. The new 45th Edition Catalog provides a more practical approach to better define the actual use of the products in the catalog. All of these changes below are aimed at making steel joists and Joist Girders safer, simpler to use and more economical. The LH-Series Load Tables have been expanded to incorporate shorter spans with higher uniform design loads as well as additional standard designations, particularly for floor systems. Because of these expanded LH-Series Load Tables, the Safe Load as well as the LH Load/Load weight tables are no longer needed and have been removed. LH-Series Load Tables layout has been reformatted to match the K-Series Load Tables. Tables outlining bearing conditions and bridging information have been updated to include the new LH-Series chord numbers. The Duct Opening Accessories page has been updated. Added page describing additional joist minimum shear criteria for web design. For more information about using steel joists in RISAFloor, visit the…

August 26, 2010 | RISAFloor, New, Wood, Joists

How to Design Wood I-Joists with RISAFloor

RISAFloor has the capability to design wood I-Joists based on tables provided by the manufacturer, or provided by you. When modeling beams in RISAFloor, choose the Wood Product material, and choose a joist manufacturer from the shape group. If you would like to add a manufacturer’s database to the program which is not listed, or if you would like to modify the capacities of the existing databases, you can do so through Microsoft Excel. The databases are stored in the following folder: C:\RISA\Wood Schedules\I-Joists When you solve the model the program will determine the maximum moment and shear for each joist and choose the lightest adequate size from the database…