This study focuses on distortional buckling of members with edge-stiffened elements.
The objective of this study was to develop improved coefficients for predicting the web crippling strength expression currently used in the Canadian Standard.
This report presents a design approach for laterally braced cold-formed steel flexural members with edge stiffened flanges other than simple lips.
The proposed restraint force design procedure applies to support, third-point, midspan, quarter point, and third-point plus support restraints.
This report presents the results of cyclic tests of 17 full-size, cold-formed steel-framed shear walls sheathed with oriented strand board, with and without openings.
This research project was initiated by AISI to investigate the capacity of bearing stiffeners used in cold formed steel joists.
An overview of the design procedures developed for laterally braced beams, columns and beam-columns of plain channels is provided.
This is a study to validate newly formulated design equations for the estimation of required lateral restraint forces in Z-purlin supported, sloped roofs under gravity loads.
Contained in this report are the test results of double and single shear cold-formed steel bolted connections failing in bearing.
This report contains the calibration results of single and double shear cold-formed steel-bolted connections that failed in bearing.
An analytical assessment of the current literature pertaining to sheet-to-sheet arc spot weld connections results in a proposed design recommendation.
The purpose of this research was to determine the axial load capacity of Z-purlins with one flange attached to a standing seam roof system.
Based on the results of this investigation, new web crippling and bending interaction equations have been developed.
The primary focus of this investigation involved the study of web-crippling behavior in single web cold-formed steel structural members.
The objective of this study was to develop a design equation that will represent the behavior of a self-drilling screw connection when it is exposed to combined shear and tension.
The project evolved in response to the inconclusive nature of existing test data on Cees and Zees in bending.
The object of this work was to develop a standard test method that could be used to establish the web crippling strength of cold-formed steel members.
The findings presented in this report provided a basis for establishing design options for shear walls in the AISI Standard for Cold-Formed Steel Framing – Lateral Design.
This report presents the results of structural tests that were performed at the NAHB Research Center on a prototype slit web stud.
This report presents the results of thermal studies that were performed at the NAHB Research Center on prototype slit web studs.
This study investigated the web crippling capacity of partially-fastened deck sections and re-entrant deck sections under the same loading conditions.
The objective of this research was to make improvements in the Rack Manufacturers Institute (1997) Specification and the AISI (1996) Specification.
This report investigates the structural adequacy of single steel L-headers for short openings in steel-framed residential buildings.
This report is a summary of the testing procedures and results used to develop the hybrid wall-to-floor connection detail.
This report investigates the feasibility of using three different configurations of steel top load-bearing track assemblies.
This report describes the results of an experimental investigation into the response of cold-formed steel floor assemblies to variations in the alignment of the components.
This project developed a method to estimate the drift deflection of cold-formed steel frame shear walls.
This research program was conducted to experimentally determine rational requirements for nodal bracing strength and stiffness demand of lipped cee-studs.
This report summarizes a study related to the design of cold-formed steel screw connections.
This report summarizes a previous test program conducted at the NAHB Research Center, and proposes a design methodology for single L-headers under gravity load.
This research program investigated the potential for corrosion of galvanized fasteners used in cold-formed steel framing.
This report includes the results of two series of bending tests on industry standard cold-formed steel C- and Z-sections.
This report presents the tables and details necessary to incorporate gable end wall design into future editions of the Prescriptive Method.
The results of these tests are available to serve as the basis of a code change to permit use of fiberboard sheathing on steel-framed walls.
The objective of this project was experimental determination of the strength and stiffness of load-bearing top track assemblies.
The objective of this project was to compare the requirements for use of the overstrength factor.
The results of 120 end-two-flange loading tests of typical floor configurations carried out to check and compare joist depth and thickness are presented.
This project investigated a more rational rafter design methodology for both gable and hip roofs.
This study compares the B4.1 and B5.1 methods for calculating the effective widths of longitudinally stiffened elements.
This project was part of an investigation to establish reliable life prediction data for galvanized steel products used with currently available pressure-treated woods.
The objective of this project was to perform tests in accordance with AISI TS-1-02 to experimentally determine the rotational restraint that sheathing provides to joists.
The findings from an extensive monotonic and cyclic testing program of 30-mil and 33-mil steel sheet sheathed shear walls with 2:1 and 4:1 aspect ratios are presented.
The primary objective of this research was to modify the method developed by Luttrell and Balaji such that the dimensional reduction factor is non-dimensional.
This research aims to experimentally investigate three typical failure modes in cold-formed steel bolted connections with the non-washer and oversized configurations.
Design expressions are proposed to predict the capacity of this connection for two limit states: web crippling of the jamb stud and punch-through of the track.
This report is a supplement to the July 2007 report on Experiments on Rotational Restraint of Sheathing by Schafer, Sangree and Guan.
Findings are presented from an extensive testing program of full-scale single and double cold-formed steel L-headers.
The research provides verification of the capacity-based design approach, the Rd and Ro values and the building height limit as found in AISI S213 for limited ductility CBFs.
This report presents findings to verify the capacity-based design approach, the Rd and Ro values, and the building height limit as found in AISI S213-07.
Presented in this report are the findings from an extensive testing program conducted at McMaster University on full-scale floor joists having larger web openings.
This document provides additional sound transmission class (STC) and impact insulation class (IIC) ratings for a number of walls and floors.
The objective of this study was to verify the adequacy of the proposed Seismic Performance Factors for the newly developed AISI S110.
The goal of this research was to examine the performance of deep deck and cellular deck diaphragms.
This research project extends the appealing generality of the Direct Strength Method to cold‐formed steel beams and columns with perforations.
This Phase 2 project confirms the discrepancy in the published nominal strength of 27-mil sheets discovered by the Phase 1 project, and proposes new values.
This study provides data that allows the formulation of a methodology to design screw connections subject to this limit state.
The objective of this research was to develop Canadian-specific design provisions for ordinary steel-sheathed shear walls.
This Phase 2 report gives an evaluation of the behavior and strength of bolted cold-formed steel connections with oversized and slotted holes without using washers.
This research project evaluates the behavior of the cold-formed steel track-to-concrete anchor bolt connection.
This report includes an initial evaluation of seismic equivalency parameters for cold-formed steel framed shear walls with wood structural panel and steel sheet sheathing.
The report examines the axial behavior and axial + bending behavior of cold-formed steel stud walls braced solely by sheathing connected to the stud and track flanges.
The report summarizes research that investigated the cyclic behavior and energy dissipation of cold-formed steel C-section structural axial and flexural framing members.
Research demonstrates that tested capacities of the CFS track-to-concrete PAF connections exceed those used for design under current ASCE 7 (2010) provisions.
This project determines and compares the behavior and usable strength of existing floor and roof deck sections with both DSM and EWM.
This project developed appropriate design methods for load-bearing cold-formed steel clip angles under three different loading conditions.
An analysis framework for cold-formed steel structures that captures the nonlinear cyclic behavior of critical components is presented.
This report updates the provisions of the AISI S100-12 standard for strength of arc spot welds loaded in shear and tension based on the results of four new research studies.
This research focused on the characterization of behavior under in-plane loading of CFS framed - wood sheathed diaphragms.
This report covers a new formulation for the Direct Strength Method that can account for stability and strength under multiple actions.
This report presents a research project aimed at advancing the treatment of cold-formed steel structural reliability in roof trusses.
This report derives monotonic and cyclic load-deformation backbone and pinching parameter models for cold-formed steel screw-fastened connections.
The results of a two-phase study to determine the effects of temperature on material properties are presented.
This study covers research to develop an improved design approach for cold-formed steel columns and frames.
The results of tests of 42 full-size, cold-formed steel-framed shear walls sheathed with plywood, oriented strand board and gypsum wallboard are presented.
Findings from this study indicate that cold-formed steel-framed shear walls are a viable alternative for residential construction in high wind and high seismic regions.
This report presents the results of 16 monotonic and 28 cyclic tests of flat strap X-braced walls and steel-sheathed shear walls.
The intent of this research report was to develop general design rules for the design of cold-formed steel members and connections subject to fatigue loading.
This report presents the results of monotonic and cyclic tests of 16 full-size, cold-formed steel-framed shear walls sheathed with oriented strand board.
Learn where to find additional research reports.
3/28/2017 - The free webinar will be presented by Rafael Sabelli from 2:00 pm to 3:00 pm ET and is eligible for one PDH.
3/23/2017 - The guide provides an online searchable directory of fire- and sound-rated cold-formed steel assemblies for residential and light commercial construction.
3/7/2017 - The webinar will be useful for practicing structural engineers, building officials, educators, researchers and students.