User manual RISA TECHNOLOGIES CONNECTION REFERENCE GUIDE V1.0

[. . . ] RISAConnection Rapid Interactive Structural Analysis for Connections Version 1. 0 - General Reference 26632 Towne Centre Drive, Suite 210 Foothill Ranch, California 92610 (949) 951-5815 (949) 951-5848 (FAX) www. risatech. com Copyright 2010 by RISA Technologies, LLC All rights reserved. No portion of the contents of this publication may be reproduced or transmitted in any means without the express written permission of RISA Technologies, LLC. We have done our best to insure that the material found in this publication is both useful and accurate. However, please be aware that errors may exist in this publication, and that RISA Technologies, LLC makes no guarantees concerning accuracy of the information found here or in the use to which it may be put. Table of Contents Table of Contents Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Serviceability The program will use serviceability limit state for standard holes (STD) or slots transverse to the direction of load (SSLP, LSLP). The program will select required strength level if the hole is oversized (OVS) or slots are parallel to the direction of the load (SSLPr, LSLPr). If the holes are defined with contradicting hole types, the program will use required strength level. For example if the beam bolts use a standard hole, and the attached clip angle uses oversized holes, required strength level will be used. Slip Critical Calculations Bolt Shear Strength This shear capacity check is calculated per section J3. 6 of the AISC 360-05 (13th Edition) Steel Code. Expand this section of the design report and RISAConnection will provide you with the exact equation, code reference, listed variables, as well as the code check value and pass or failure notification. Shear Connections General Reference Manual 27 Bolt & Material Design Checks Note: The Eccentricity Coefficient, C is calculated in the Bolt Group Eccentricity check, as explained above. Moment Connections If this check is part of a moment connection (End Plate or Flange Plate Moment Connection), the check will also convert the allowable shear strength to an allowable moment and check this against the user input Moment Load. Note: The Eccentricity Coefficient, C is calculated in the Bolt Group Eccentricity check, as explained above. Bolt Bearing Strength This check is calculated per section J3. 10 of the AISC 360-05 (13th Edition) Steel Code. Expand this section of the design report and RISAConnection will provide you with the exact equations, code reference, listed variables, as well as the code check value and pass or failure notification. Shear Connections 28 RISAConnection v1. 0 Bolt & Material Design Checks Rn_spacing and Rn_edge are taken as the minimum value of the Tear Out and Bearing calculations. The spacing variables Lc_edge and Lc-spacing are described below: Note: RISAConnection considers all three equations in this section (J3-6a through J3-6c) for the Bolt Bearing checks. The program distinguishes between the three equations based on the user input Bolt Hole Deformation selection (in the Solution tab of Global Parameters) and the Hole Type selection in the Components section of Connection Properties. Moment Connections If this check is part of a moment connection (End Plate or Flange Plate Moment Connection), the check will also convert the allowable shear strength to an allowable moment and check this against the user input Moment Load. Shear Yield Strength Shear yielding occurs over the gross cross section of elements in shear, such as shear tabs. The shear yielding capacity is calculated per AISC 360-05 section J4. 2. General Reference Manual 29 Bolt & Material Design Checks A special case occurs when considering the beam web shear yielding. In this case the shear yielding capacity is calculated per AISC 360-05 section G2. 1. The capacity is calculated per equation G2-1 and the Cv values are calculated using G2-2, G2-3, G2-4 and G2-5. Shear Rupture Strength Shear rupture occurs over the net cross section of elements in shear, such as shear tabs. The shear rupture capacity is calculated per the AISC 360-05 section J4. 2. Block Shear Strength Block shear is a combination of tensile rupture, and either shear yielding or shear rupture. The program checks both types of block shear per the AISC 360-05 section J4. 3. 30 RISAConnection v1. 0 Bolt & Material Design Checks Note: When multiple rows of bolts are present for a block shear calculation, a Ubs value of 0. 5 is used. Otherwise this value is taken as 1. 0. Plate Tearout This failure mode is calculated as block shear using an "inside" perimeter rather than an "outside" perimeter. Plate Flexural Yielding Flexural yielding occurs in elements of shear connections which take moment due to eccentricity. This effect is negligible, and is therefore ignored for clip angles and end plates. This effect also does not affect moment connections, since eccentricity may be ignored. The program does check flexural yielding for shear tabs, as it can be a controlling failure mode for extended configurations. This check is not required if allof the following conditions are met: The shear tab is bolted to the beam. The bolts are less than 3. 5" (horizontally) from the face of support. A horizontal edge distance equal to twice the bolt diameter is present on both the beam and the shear tab. The thickness of either the beam web or the plate is thin enough to produce ductile behavior. A minimum vertical edge distance is met for both the plate and beam (if coped). General Reference Manual 31 Bolt & Material Design Checks For more information, see the AISC 13th Edition Manual, page 10-101. [. . . ] This will allow you to print whatever is currently showing in the connection view. Print Preview Going to File - Print Preview or pressing the Print Preview button will open the Print Preview dialog. Report Print Preview This dialog allows you to preview the current print and make modifications to the header and footer. This dialog gives paper orientation options, margin selections and options for what pressing the Page Setup is to be viewed for the Header and Footer information. Note: The three Header and Footer selections give options for what to show in the left, center and right side of the headers and footers respectively. 54 RISAConnection v1. 0 Printing Once these settings have been chosen properly, pressing the Print button will print your output. Graphic Print Preview The graphic print preview gives the view shown in the Connection View window and applies a header to it. General Reference Manual 55 Units Units The Units dialog allows the user to set the units designation for the project. You can work with Imperial units (Kips, inches, etc. ) or Metric units (KN, meters, etc. ), or any combination of the two. To access this dialog, simply click the Units button from the Main menu or the Units icon from the Window toolbar. Note: Units can be changed at any time during modeling and the current units will be converted to the new units. 56 RISAConnection v1. 0 Technical Support Technical Support Technical support is an important part of the RISAConnection package. [. . . ]