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Showing 1 to 20 of 23 for “"metal building"”.
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Flange bracing requirements for metal building systems
… for complex frame geometries typically found in metal buildings can prove to be an arduous task given current methods. The American Institute of Steel Construction's Appendix 6 from the 2010 Specification for Structural Steel Buildings affords engineers a means for determining brace strength and …
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LRFD evaluation of full-scale metal building rigid frame tests
Metal building companies commonly use rigid frames to meet the requirement of large, open spaces which are unobstructed by interior columns. These rigid frames are optimally designed and constructed using tapered columns and rafters, connected at the knees and ridge by moment end-plate connections. …
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Effective Lengths of Web-Tapered Columns in Rigid Metal Building Frames
Current procedures for estimating effective length factors for web-tapered members rely heavily on the use of charts and graphs. This makes them difficult to implement using a computer. In addition, they are often based on unrealistic assumptions. In cases where these assumptions are not satisfied, …
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Towards a Better Understanding of the Fundamental Period of Metal Building Systems
Metal buildings account for over 40% of low-rise construction in the US. Despite this, predictive fundamental period equations that were obtained empirically for mid-rise construction are used in seismic design. Analytical modeling of metal building frames implied that these equations significantly …
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Development of Prediction Methods for the Lateral Anchorage Requirements in Metal Building Roof Systems
Metal building roof systems with C- or Z-section purlins require restraint to resist lateral forces developed within the roof system under gravity loads. The currently available procedures for predicting these forces have been shown to be inaccurate for sloped roofs and difficult to apply to roof …
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Direct Strength Method for the Flexural Design of Through-Fastened Metal Building Roof and Wall Systems under Wind Uplift or Suction
The design of metal building roof and wall systems under uplift and suction wind loading is complicated because the laterally unbraced purlin and girt's free flange is compressed, and the cross-section rotates due to the shear flow. The objective of this thesis is to introduce a Direct Strength …
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Assessment of Analytical Procedures for Designing Metal Buildings for Wind Drift Serviceability
While designing metal buildings for wind drift, for simplicity of analysis and design, connection at base of column is considered as pinned which provides no rotational restraint. The actual behavior of the connection however, is partially rigid, that provides some rotational stiffness even in case …
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Structural Optimization using the Principle of Virtual Work and an Analytical Study on Metal Buildings
… was then used to analyze the behavior of metal building frames under various loadings. The focus of this study was to determine the effect modeling the column base connection as partially rigid has on wind drift in metal building frames. Before beginning the study, a literature review was …
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Synthesis of multicomponent heavy alkali metal amide systems and extensions to zirconium chemistry
… 1 and includes an introduction on reported homometallic lithium, sodium and potassium salts of the bulky utility amines [HMDS(H), TMP(H) and DA(H)]. The second section, Chapter 2−Chapter 5, includes the achieved results obtained during the course of this PhD work based on the homometallic alkali …
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Standing seam roof system strength under uplift loading
… of C- and Z-purlin supported, standing seam metal building roof systems. To achieve this end, eight sets of full-scale roof system tests were conducted. Each test set consisted of a single span base test and a three-span, multi-purlin line, confirming test. The base test method for uplift …
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Implications of P-Delta analysis and LRFD of gable frames
… steel design specifications as they apply to the metal building industry. Since these buildings are primarily for industrial use, their optimization suggests the use of gabled rigid frames with tapered elements to provide the required load carrying capacity. Results of the research indicate that …
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Simplified method for design or moment end-plate connections
… connections are extremely popular in the metal building industry due to economics and construction ease, yet have proven to be quite complicated from the analysis and design standpoint. Past research has shown that the design of these connections is controlled by either the strength of the …
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Computational and Experimental Study on the Behavior of Diaphragms in Steel Buildings
… lateral force resisting system (LFRS) of a steel building consist of two parts, i.e., a vertical LFRS such as braced frames or shear walls, and a horizontal LFRS with diaphragms playing a crucial role. There are various types of floor and roof diaphragms in steel buildings, such as concrete-filled …
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Simplified design of moment end-plate connections
… end-plate connections are widely used in the metal building industry and portal frame construction. This is due to the advantages of the field-bolted construction and excellent performance of moment end-plate connections. These connections have been studied extensively. Yield-line analysis has …
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Response of Cyclically Loaded Extended End-Plate Moment Connections When Used With Welded Built-Up Sections
… typical connection configurations used in the metal building manufacturing industry. Four of the beams were shallow (30 in. or less), and seven were deep (60 in. or more). Two of the beams had compact webs, two had non-compact webs, and seven had slender webs. All specimens were designed …
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Experimental and analytical investigation of the LRFD strength of tapered members
… rigid gable frames are commonly used by the metal building industry for light, industrial buildings. These rigid gable frames are usually constructed of built-up, web tapered, columns and rafters for reasons of economy. The tapering of the webs optimizes the members to develop a …
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Influence of Column-Base Fixity On Lateral Drift of Gable Frames
In a typical light metal building, the structural members are designed for the forces and moments obtained from the wind drift analysis, which assumes pinned connections at the base. The pinned connections provide no moment at the base and have zero rotational stiffness. However, in reality every …
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Cold-Formed Steel Behavior: Elastic Buckling Simplified Methods for Structural Members with Edge-Stiffened Holes and Purlin Distortional Buckling Strength Under Gravity Loading
… developed DeltaSTUDs manufactured by Steelform Building Products, Inc. and a series of common Steel Stud Manufacturers Association (SSMA) members. Furthermore, a suite of simplified methods for determining elastic buckling parameters used to predict capacity with the Direct Strength Method (DSM) …
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Prediction of Lateral Restraint Forces in Sloped Z-section Supported Roof Systems Using the Component Stiffness Method
… are widely used as secondary members in metal building roof systems. Lateral restraints are required to maintain the stability of a Z-section roof system and provide resistance to the lateral forces generated by the slope of the roof and the effects due to the rotation of the principal …
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