Steel bearing plate design example pedestal. This publication provides guidance for the design of cast-in steel plates for connecting structural steel beams to concrete core walls. Dec 27, 2024 · This tutorial provides an AISC connection design example. Typically, these beam-column base plates have been designed and/or analyzed by using service loads1 or by approximating the stress relationship assuming the com pression bearing location. beam size 2. Designing base plates for HSS columns is very similar to base plate design for wide flange columns with a few key diferences in the specific details. It provides three key points: 1) A method for determining the required thickness of a bearing plate based on the load, allowable bearing pressure, and overhanging cantilever span is presented. Base plate design is a key part of any structure design because loads are transferred from the superstructure to the foundation via the base plate. SCM Figure 14-3 on pg 14-5 shows the critical dimensions. Oct 24, 2025 · Base plate design example with compression loads using AISC 360-22 and ACI 318-19. A bearing plate is generally a rectangular plate that can described by its dimensions as shown in Figure 8. The designer should account for these in the design of the bearings. ) Apr 7, 2016 · Can we consider the vertical steel when designing bearing plates on CMU? I've not seen a bearing plate design or example that allows this. Foreword The Steel Bridge Design Handbook covers a full range of topics and design examples to provide bridge engineers with the information needed to make knowledgeable decisions regarding the selection, design, fabrication, and construction of steel bridges. pdf), Text File (. Apr 3, 2025 · An example of some AISC base plate design code calculation examples that are commonly used in base plate design. In addition, they are used for mounting of equipment and in outdoor sup-port structures, where they may be affected by vibration and fatigue due to wind Jun 16, 2011 · Section 8. An excellent discussion on the procedure for designing column base plates can be found starting on SCM page 14-4. The Steel Bridge Bearing Design Guide and Commentary summarizes these design requirements and provides software to aid in the design of a steel reinforced elastomeric bearing. Shaft sections may be fabricated in various lengths ranging from 36” to 240” depending on job requirements. Jul 9, 2025 · Design approach according to AISC 360 There is two main design requirements: to design against crushing of the concrete footing by calculation of the footing's allowable bearing strength, and to determine the minimum base plate thickness by calculation of the "critical base plate cantilever length". The AISC Partners in Education Committee has condensed the set of Design Examples to include 43 example problems that will be most likely to address topics that are studied in a first semester structural steel design course. Furthermore, if the horizontal shear force is greater than one-fifth of the minimum permanent dead load, the bearing is subject to slip and must be secured against horizontal movement The document discusses the design of steel bearing plates used to support columns and beams. 2 The authors present another approach, using factored loads directly in a method consis tent with the equations of static equilibrium and the LRFD Specification. 1 is a free body diagram of the base plate cut at the location of critical moment in the base plate. Steel reinforced elastomeric bearings can handle larger rotations and translations than other elastomeric bearings by employing multiple elastomer layers, but the design must satisfy stability requirements. Four base plates are shown for illustrative purposes, however, up to 100 plates may be designed and displayed in one run of this application. It then outlines design assumptions for square and rectangular bearing plates, including assuming a uniform bearing stress distribution and variable concrete bearing T H E DESIGN OF base plates of columns in steel frame build ings is simple but time consuming. Apr 13, 2021 · The bearing plate is necessary to avoid crushing of the weaker material and to distribute the reaction force over a sufficient length of beam to prevent web yielding or crippling. The steel girder design criteria are obtained from Figures 3-1 through 3-3 (shown below), from the concrete deck design example, and from the referenced articles and tables in the AASHTO LRFD Bridge Design Specifications (through 2002 interims). 1 Typical Column Bearing on Concrete Footing. Start your ASDIP STEEL free trial Circular Base Plate Example As an example, consider the circular base plate subject to the dead and wind loads shown below. Apr 13, 2021 · Section 8. SCM Figure 14-3 on SCM page 14-5 shows the critical dimensions. I often come up with plate thicknesses exceeding 1", as a result of both the load and the beam shape "k1" value. 01 radians), the designer may alternatively choose to use fl at sole plates and design the bearing accounting for the theoretical sole plate bevel. A tapered bearing plate, sometimes known as either a ‘sole plate’ or a ‘seating plate’, is nearly always required between the upper surface of the bearing and the underside of the flange so that the bearing remains truly horizontal. This module handles base plate design for the following conditions: •where the resultant eccentricity is zero, •where the resultant eccentricity is within the middle third for full bearing 16. The base plate itself is subject to shear and moment. Shaft and helical bearing plate sizes available are shown in Appendix A. -thick concrete walls at both ends as shown in Figure below. A bearing must be designed so as to control the stress in the steel reinforcement and the strain in the elastomer Microsoft PowerPoint - SteelDesign_PlateGirder_Fu_New. steel plate thickness 4. l= 2 k/ft , fc’= 4000 Psi ). Known for their simplicity and ease of installation, single plate California Department of Transportation | Caltrans This document provides details on common structural steel connection designs. net/d A W21 x 68 beam has a span length of 16 feet (center to center of supports) and is supported on Jul 30, 2011 · A bearing plate designed to transfer loads between two structural elements follow the same principles as discussed in the prior section, however the limit state of bearing on concrete or masonry is not used. Oct 24, 2025 · Base plate design example with compression loads using CSA S16:19 and CSA A23. Designing steel braces with welded gusset plate connections is a critical aspect of structural engineering, ensuring both stability and strength in framed structures. An excellent discussion on the procedure can be found starting on SCM pg 14-4. 15 = 1. 2. To support the designer, this written guide along with the Jun 16, 2011 · Section 8. 5: This problem illustrates the design of a typical continuous beam that uses cover plates to increase beam strength in locations of negative moment. The document discusses the design of column base plates and beam bearing plates according to the AISC Steel Construction Manual. Therefore, the size and thickness of base BEARING PLATE Situations When Bearing Plates Are Necessary Bearing plates are mostly used to transfer the load between end of steel structures member into its ground support. The design examples provide coverage of all applicable limit states, whether or not a particular Jun 27, 2017 · The bearing stiffeners in this design example consist of one plate welded to each side of the web. The AISC Manual of Steel Construction contains tables of base plate sizes and thickness for maximum loads on columns of short lengths. 2 Design Step 6. bolt diameter 5. Jul 30, 2011 · A bearing plate is generally modeled as a double cantilevered beam as shown in Figure 8. resting on masonry are details associated with the design of all steel structures. Shear connections between I-shaped sections are some of the most common connections in steel design. 3. Be sure when spec-bers which combine the strength D and based on the wood members being composed ifying flitch plates to indicate that the plate stiffness of structural steel with the ver- of Douglas Fir - Larch #2 as well as laminated is made of steel. Oct 23, 2006 · Once you have checked the slab and assuming it works, then you can design your bearing plate per AISC Specifications. Advanced steel design course material on beam bearing plates and column base plates. Design of elastomeric bearings is typically the responsibility of the design engineer whereas for most high-load Jun 16, 2011 · A bearing plate designed to transfer loads between two structural elements follow the same principles as discussed in the prior section, however the limit state of bearing on concrete or masonry is not used. 2 Column Bearing on Concrete Bearing plates are also frequently used to transfer column forces to concrete footings as shown in Figure 8. Maximum plate pressure - This is the maximum pressure the plate can withstand before it fails. Please watch other lectures on steel design to get a complete understanding of the steel design procedure. 1 AMERICANINSTITUTE OFSTEELCONSTRUCTION iii PREFACE The primary objective of these design examples is to provide illustrations of the use of the 2010 AISC Specification for Structural Steel Buildings (ANSI/AISC 360-10) and the 14th Edition of the AISC Steel Construction Manual. The first example uses a directly welded splice, while the second example uses splice plates on four sides of a rectangular HSS column. E1. Flitch plate beams are composite mem- section properties indicated in R Table 1 are available in Grade 50 steel. The use of beveled sole plates and cambering of beams have an impact on the design rotations for bearings on steel bridges. 1. Design Requirement 1. Sep 3, 2020 · Development of a Comprehensive Design Example for a Steel Girder Bridge with Commentary Apr 3, 2025 · Steel Base Plate Design Australian Code Example Below is an example of some Australian Base Plate Calculations that are commonly used in base plate design. Baseplate Design The baseplate plays a crucial role in distributing stresses arising during the transfer of column forces to the concrete The intent of this course is not to provide an exhaustive coverage of column design. Apr 3, 2025 · Steel Base Plate Design Example Eurocode Below is an example of some Eurocode Base Plate Calculations that are commonly used in base plate design. If the flange width of the beam exceeds the maximum possible plate width, I see no reason to have the plate thickness exceed Jun 27, 2017 · Bearing Design Example Obtain Design Criteria Design Step 6. location of the bearing plate Once all the information is entered, the calculator will provide the following results: 1. 1. 2-1 Steel reinforced The required input includes column loads, ratio of the concentric concrete support area to the plate area, the yield strength of the base plate steel, rounding factors for plan dimensions and thickness, and the column widths and depths. AISC Design Guide 1 Third Edition (AISC DG1) explains the design process for various ELASTOMERIC BEARING DESIGN (STEEL GIRDERS) (Based on IDOT Bridge Manual 2023) Step 1: Determine Size and Type of Bearing (A) Select the plate size based on the loading for Types I & II bearings. It provides information on selecting base plate dimensions, thickness, and anchor bolt requirements for columns. The design process involves a thorough evaluation of the forces imposed on the shear tab and the careful determination of the tab's capacity to manage these shear loads effectively. The more recent editions of the Handbook Condensed for Use in First Semester Structural Steel Design Classes The AISC Committee on Manuals prepares design examples to illustrate the application of the This input is used to ensure min. The course covers design of the column, along with base plate design. Dec 20, 2024 · The design of baseplates and anchor rods is a critical component in ensuring the safety and constructability of steel structures, particularly in effectively resisting section forces (axial force, shear force, and bending moment) of steel columns. <<< Previous Section <<< >>> Next Section >>> Design of Steel Bearing Plates RUSSELL S. Design a plate girder. 1 Design of base plate for thickness (Elastic Design) Upto this point, the chief concern has been about the concrete foundation, and methods of design have been proposed for arriving at a base plate area that will keep the permissible stress in the support within the specification. 0 BEARING TYPES Steel bridge bearings may be divided into three general types: elastomeric bearings, high-load multi-rotational bearings, and mechanical bearings. Includes step-by-step guide and clear, transparent calculations. However, in actual practice the column loads for various column sizes are seldom maximum as tabulated in the AISC Manual. Often when designing base plates, we will consider a few different checks relating to the various components of a base plate, namely: Jun 22, 2023 · A bearing plate designed to transfer loads between two structural elements follow the same principles as discussed in the prior section, however the limit state of bearing on concrete or masonry is not used. Jun 27, 2017 · The first design step for a steel girder is to choose the correct design criteria. Apr 15, 2024 · When the bearing pressure under a beam flange exceeds the allowable, a bearing plate should be inserted under the flange to distribute the beam load over the concrete or masonry. It is in effect an overhanging beam and must be 1. Column cross-sections will be limited to wide flange sections and hollow structural sections because both are common for structural columns. Figure 8 Design Examples V14. The force that is transferred is distributed over the two bearing lengths B and C. 1 on Page 25 Save My Inputs Load My Inputs About This Spreadsheet Designing single plate shear tab connections is a fundamental aspect of structural engineering, ensuring reliable load transfer in steel frameworks. The Aug 6, 2020 · In the design of portal frames and other steel structures, moment-resisting bases can be provided if large lateral forces and bending moments are anticipated. A design example of the three span continuous composite plate girder bridge is given to illustrate the design procedure. FLING BASE PLATES for columns and bearing plates for beams resting on masonry are details associated with the design of all steel structures. WisDOT policy item: girder superstructures is -30°F to 120°F. Installation temperature is 60° if using laminated elastomeric bearings, res Steel Base PlateNeed more? Ask Us a Question This module designs steel column base plates according to the latest Edition AISC Steel Construction Manual and the AISC Design Guide 1, Second Edition. Figure 8. 3 The moment-resisting base plate must have For W18 x 50 beams is simply supported on 10-in. For example, foundation of the column or beam, or even the connection between column and beam. Base plates for columns and bearing plates for beams resting on masonry are details associated with the design of all steel structures. Each example will provide commentary along the way to provide pertinent information to consider during the design process. ppt [Compatibility Mode] resting on masonry are details associated with the design of all steel structures. 67db and 3db), different Fu (58 and 65 ksi), and different bolt diameters (5/8 – 1-1/2 in. plate thickness for rigidity as the concrete bearing pressure is assumed to be linear in the design. 1 Commentary for 1: Includes: Movement (longitudinal and transverse), Rotation (longitudinal, transverse and vertical), Loads (longitudinal, transverse, and vertical) Select Optimum Bearing Type S14. This moment is resisted by the critical Jun 16, 2011 · The bearing plate is necessary to avoid crushing of the weaker material and to distribute the reaction force over a sufficient length of beam to prevent web yielding or crippling. more Nov 13, 2023 · Column base plates are provided beneath steel columns in order to transmit the applied design forces safely to the foundations. load capacity 3. Note that the base plate is a double The design of a steel reinforced elastomeric bearing requires an appropriate balance of compressive, shear and rotational stiffnesses. For bearings requiring sole plates with minor bevels (<0. 0 Section 2 - Special Design Requirements for Different Bearing Types ELASTOMERIC BEARING PADS AND This example illustrates the design of an expansion curved plate elastomeric bearing for a steel plate girder bridge. Design Examples V14. Jun 16, 2017 · Steel Beam Bearing Plate Design Example and Tutorial https://www. Moment capacity - This is the maximum moment the plate Oct 14, 2025 · Explore comprehensive base plate design examples covering standards such as AISC, CSA, AS, EN, and NSCP for accurate and code-compliant structural calculations. of m/4 and n/4 ( m and n are plate overhangs in two directions ) No description has been added to this video. The shape factor affects the compressive and rotational stiffness, but it has no impact on the translational stiffness or deformation capacity. However, this method does not limit plate deflections or consider minimum plate thicknesses needed for small Sep 6, 2014 · This example bridge is modeled after Example 1 from “Four LRFD Design Examples of Steel Highway Bridges”, Volume II, Chapter 1B of the Highway Structures Design Handbook produced by the American Iron and Steel Institute except this example bridge is not skewed like the one in the handbook. Couplings are inertia welded to the shaft ends to allow attachment of extensions for deeper penetration into the ground when needed. 1: width (N), length (B), and thickness (t). The Companion consists of design examples in Parts I, II and III. Yield stress of steel, fy Material factor for steel, γm Dead Load factor, γfd Imposed load factor, γfλ = 250 N/mm2 = 1. The designer must determine which bearing type is best suited to cost effectively accommodate the design requirements. Appendix 12C Design Example; Steel Laminated Elastomeric Bearing with Sole Plate - Fixed (Type EB) Note: Highlighted values on the following pages require user input. AI generated definition based on: Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges, 2014 Feb 26, 2009 · Is there a good reference out that would give examples of how to design the bearing plates and anchorages attached to a steel pile or a drilled shaft for tied back walls? Example Problem 8. Base plates help provide a uniform distribution of superstructure loads to the foundation, and therefore conform By Mike Manor, PE, MLSE All steel columns need a base plate to transfer the axial and/or flexural forces from the building above into the supporting foundation. Example 4 (LRFD Procedure): Design a plate for a W10 x 100 column supporting a dead load of 188 kips and a live load of 338 kips, bearing on a 25 x 25 in. Feb 27, 2024 · The design of circular base plates may present a challenge when considering axial load and bending moments that produce large eccentricities. These 43 example problems can be found on the following pages. The second image in Figure 8. If the yield point of the steel is known, the thickness of the plate required can be determined by the procedures outlined on pages 2-44 or 3-75 of the AISC 2. 2. txt) or read online for free. Mar 27, 2004 · I have a bearing plate design example that I follow. Design a beam bearing plate at the concrete wall supports assuming the following (beam length 20 ft centers to center of the support, N= 6in, Wd. For a more detailed discussion, reference may be made to texts by Chen and Duan (2014), Barker and Puckett (2013), FHWA (2015), and Taly (2014). 3:19. If the yield point of the steel is known, the thickness of the plate required can be determined by the procedures outlined on pages 2-44 or 3-75 of the AISC All steel columns need a base plate to transfer the axial and/or flexural forces from the building above into the supporting foundation. The span is 36 m and carries two concentrated loads as shown in Fig. Steel and Aluminum Structural Plate Design Guide Table of Contents This design guide is provided by Contech Engineered Solutions to assist designers with most applications and design aspects of MULTI-PLATE®, Aluminum Structural Plate (ALSP), Aluminum Box Culverts (ALBC), SUPER-SPANTM, SUPER-PLATE®, BridgeCor®, and Steel EXPRESS®. Includes design procedures and calculations. The design bearing strengths are given for different bolt spacings (2. ) Built-up Plate Girders, Part 1 -- 2 slides per page Built-up Plate Girders, Part 1 -- 4 slides per page Calculate the steel base plate checks for a range of design standards, using this quick and easy baseplate calculator! Jul 24, 2025 · Design a base plate according to Eurocode 3 for steel I-sections in axial compression. height of the bearing plate 7. From this, the overhanging cantilever span can be determined. l =1. Given the load and allowable bearing pressure, the area of the plate is easily computed. If is selected, the min. It describes a test of a bearing plate anchorage assembly where the tendon is stressed to destruction. 35 = 1. The uniform force method provides a systematic approach to this design, starting with the calculation of the free-body diagram of the gusset plate to understand the forces at play. Hence, it is the practice to provide a steel plate beneath the column in order to Slide Bearing Plates Design and Application of Slide Bearing Plates in Mechanical Systems Download Slide Plates General Information Slide bearing plates are a very cost-effective way of providing for movement of mechanical systems. 4. If the loads were considerably larger, pot bearings, which are more expensive than elasomeric bearings, would be an option. The Handbook has a long history, dating back to the 1970s in various forms and publications. Handouts for the Live Webinar, Design of Built-up Plate Girders based on AISC 360-16 Specification for Structural Steel Buildings -- Part 1: Bending, are available below. Given the load and allowable bearing pressure, the area of the plate is easily com puted. The guidance can be extended to connections of other elements (eg support brackets for services). Often when designing base plates, we will consider a few different checks relating to the various components of a base plate, namely: The Concrete base - generally checked against bearing Subscribed 22 842 views 6 months ago Beam- Bearing Plate Design Per AISC 16th Editionmore 8. Some builders believe that T Oct 13, 2022 · The design process of steel column base plate is discussed here based on the design examples given in the AISC Steel steel construction manual. Can i subtract the allowable bearing on the vertical steel from the total reaction and THEN apply the difference ONLY to the grouted CMU, and THEN divide by the 375? Jun 27, 2017 · For the abutment bearing design, a steel-reinforced elastomeric bearing was selected. engineeringexamples. The bearing is based on Bridge Details Part I, B355. The resulting distributed loads are shown. . 4 Bearing Plate Design Bearing plates are used to transfer concentrated compressive forces between two structural elements. bearing area 6. Typically this occurs in two conditions: When a beam or column is supported by concrete or masonry, or When a beam supports are large concentrated load from a supported element, such as a column. A temperature setting table for steel bearings is used for steel girders; where 45°F is the neutral temperature, resulting in a ran of 120° - 45° = 75° for bearing design. These con-nections are used in buildings to support gravity loads and function as part of lateral-load-resisting systems. The next three sections look at these conditions: Beam bearing BASE PLATES for columns and bearing plates for beams resting on masonry are details associated with the design of all steel structures. In addition, they are used for mounting of equipment and in outdoor sup-port structures, where they may be affected by vibration and fatigue due to wind The two examples in this article will focus on demonstrating field welded splice options. The base plate acts as an interface between the superstructure and the foundation; thus, completing the load path into the foundation. The AISC Manual of Steel Construction has design examples for this. It discusses bearing plate design, hollow structural section column connections, truss panel point connections, and provides an example of checking the strength of welded connections in a steel truss. plate thickness will be the max. 0 INTRODUCTION Column base plate connections are the critical interface between the steel structure and the foundation. Bearing plate is defined as a structural component that distributes loads from rollers to a concrete foundation, with its dimensions and thickness determined by factors such as concrete strength, roller spacing, and bending moment distribution. The primary objective of this Companion is to provide guidance and additional resources of the use of the 2016 AISC Specification for Structural Steel Buildings(ANSI/AISC 360-16) and the 15th Edition AISC Steel Construction Manual. Designing base plates for HSS columns is very similar to base plate design for wide flange columns with a few key differences in the specific details. (These handouts include editorial updates made to Slides 77 and 100. This document shows a step-by-step circular base plate example using ASDIP STEEL software. This lecture discusses about the design of Beam Bearing Plates following AISC guidelines. It does, however, cover fundamental concepts used in common applications. 2 Commentary for 2: See list of bearing types and selection criteria in AASHTO Table 14. Both an interior and an end application are considered. Steel columns are heavily loaded, and their cross-sections are typically small. 6: This problem illustrates the design of bearing plates. The connections to the web will be designed to transmit the full bearing force due to factored loads and is presented in Design Step 5. If the yield point of the steel is known, the thickness of You will need end bolts to transfer the steel plate load to wood members for bearing, unless the steel plate bears on a steel bearing plate. Therefore, the size and thickness of base Beam Bearing Plates - Free download as PDF File (. Applying these loads directly on the foundation could possibly result in a shear or punching failure. Abstract Steel bridge bearings may be divided into three general types: elastomeric bearings, high-load multi-rotational bearings, and mechanical bearings. Oct 24, 2025 · Base plate design example with tension loads using AISC 360-22 & ACI 318-19. Provide following design parameters : This document presents a simplified analytical method for calculating bearing plate stresses under post-tensioning anchorages. 6. Use LRFD method and A992 steel material Wanted: Design bearing plates for the following conditions: Size the bearing plate at point A for a reaction force equal to 75% of the shear capacity of the W18x35. Example Problem 8. From AISC Design Guide 1: Base Plate and Anchor Rod Design 2nd Ed Fig. Final Considerations This is just one example of how to design the bolting for a flitch beam; there are certainly other valid methods and assumptions that will provide an adequate design. 50 9000 mm W1 w 18000 mm It provides background information on the specific issue of plated steel structures addressed in EN 1993-1-5. 5 k/ft and Wl. For the design of plated steel structures, the rules for shear lag effects and plate buckling that have been specified in EN 1993-1-5 may look novel for many practitioners who so far have been acquainted to traditional national rules. T H E DESIGN OF base plates of columns in steel frame build ings is simple but time consuming. wbm nqtmn thnpi zbzx ckdb scdn epykyaig egva rvqqnvb taar yswos qylmu aqaj mkmjyyj rknuh