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INSTRUCTORS:
Finley A. Charney, Ph.D., P.E., F.ASCE F.SEI
William L. Coulbourne, P.E., F.SEI, F.ASCE
Purpose and Background
This course focuses on the practical application of the ASCE 7-16 wind provisions on a variety of building sizes, building frames, and building sites. We will cover 11 different wind engineering problems for hurricane and straight-line winds and one problem for tornado wind loads that will illustrate how to use the ASCE 7 provisions. While the problems are created examples, they illustrate a variety of design conditions that are experienced in the real world of building design. The course also creates site decisions to make, building frame design choices to analyze and cladding, components, equipment, and appurtenances that must be analyzed for wind loads.
Two examples will use balloted provisions that will likely be adopted for ASCE 7-22 in the use of wind loads for ground mounted solar collectors and for tornado loads on tornado shelters. The examples were selected to offer a variety of design conditions, variations on building flexibility, and complications in building geometry that are not explicitly covered in the standard. The range of examples are intended to expose the user to a broad array of wind design problems.
Benefits and Learning Outcomes
Upon completion of this course, you will be able to:
- Apply the ASCE 7 wind provisions to real building types and design scenarios.
- Explain differences in building characteristics and how those differences influence the approach to wind design.
- Apply wind provisions for components and cladding, solar collectors, and roof mounted equipment.
- Describe the differences between the directional and envelope procedures and which one should be used in various cases.
- Explain how the building natural frequency influences the wind loads on a building.
- List important wind design parameters needed for building design.
Assessment of Learning Outcomes
Achievement of the learning outcomes by attendees will be assessed through (3) exams.
Who Should Attend?
- Design engineers
- University research associates
- Structural engineering faculty
- Engineers using wind provisions in the development of trade organization technical material
- NAVFAC
- US Corps of Engineers
- Army, Coast Guard, and Air Force facility engineering organizations
- University faculty
- Building envelope material groups
How to Earn your CEUs/PDHs
This course is worth 2.4 CEUs/24 PDHs. To receive your certificate of completion, you will need to complete (3) exams and receive a passing score of 70% or higher.
How do I convert CEUs to PDHs?
1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]
Course Outline
Week 1: Overview of ASCE 7-16 Provisions for Determining Wind Loads
Course Introduction & Week Introduction
Basic wind pressure equation
Directionality
Exposure-height
Elevation and Topography
Velocity
Wind design methods – directional and envelope (equations and look-up tables)
Wind speed maps
Learning Exercise
Conclusion
Week 2: Determine Wind Loads on a 1-story Warehouse
Introduction
Finding design wind speed
Directional procedure for MWFRS
Determine the MWFRS external and internal pressure coefficients
Learning Exercise - Using wind speed map utilities
Determine internal pressure coefficient
Calculate external MWFRS wind pressures on roof and walls
Determine C&C external pressure coefficients
Calculate C&C pressures for wall panels, wall girts, and roof trusses that span
Learning Exercise - Impact of openings on internal pressure coefficients
Conclusion
Week 3: Determine Wind Loads on a 50 ft. High Rectangular Building
Introduction
Finding design wind speed
Envelope procedure for MWFRS
Describe how to determine the MWFRS pressures on the parapet
Learning Exercise - Impact of terrain on exposure classification
Determine internal pressure coefficient
Calculate external MWFRS wind pressures on roof, walls and parapets
Determine C&C external pressure coefficients on roof, walls and parapets
Calculate C&C pressures for wall panels, wall girts, and roof trusses that span
Learning Exercise - Determine the effect parapets have on roof pressures
Conclusion
Week 4: Determine Wind Loads on Octagonal Building with Cupula 80 ft. tall
Introduction
Finding the wind speed
Describe how to determine the MWFRS pressures on the cupula
Determine the internal pressure coefficient
Learning Exercise - Theoretical exercises
Calculate external MWFRS wind pressures on roof and walls
Determine the loads at the cupula to roof connection
Determine C&C external pressure coefficients on roof and walls
Calculate C&C pressures for wall panels, wall girts, and roof framing
Learning Exercise - Practical exercises
Summary
Conclusion
Exam: Weeks 1-4
Week 5: Influence of Local Terrain on Wind Loads
Introduction
Description of Building and Local Wind Environment
Determination of Wind Speeds for Mapped Windspeed Locations
Determination of Wind Speeds for Special Wind Region
Learning Exercise - Theoretical exercises
Determination of Exposure Category for all Three Sites
Determination of Windward Wind pressure distribution for all Three Sites, and Comparison Among Sites
Modification of Wind Pressures for a Site on an Escarpment
Learning Exercise - Practical exercises
Conclusion
Week 6: Factors that Affect Wind Loads on a 10-story Building
Introduction
Description of Building
Surface Pressures and Overall Forces
Gust Factor Basics
Learning Exercise - Theoretical Exercises
Influence of Gust Factor on MWFRS Forces
Overview of Wind Load Determination
Learning Exercise - Practical Exercises
Conclusion
Week 7: Comparison of Directional and Envelope Procedures for determining wind loads on two buildings
Introduction
Description of building systems and locations. Determination of basic parameters for the buildings
Determination of Wind Loads for the Hotel using the Directional Procedure
Determination of Wind Loads for the Hotel using the Envelope Procedure
Learning Exercise - Theoretical exercise
Determination of Wind Loads for the Metal Building using the Directional Procedure
Determination of the Wind Loads for the Metal Building using the Envelope Procedure
Comparison and Discussion of Results for the Two buildings
Learning Exercise - Practical Exercises
Conclusion
Week 8: Determine Base Shear and Overturning Moments for a 20-Story office Building in Austin, Texas (Using the Directional Procedure)
Introduction
Description of Building, Intended Structural Systems, and Wind Environment
Determination of Wind Pressures and Pressure Coefficients
Determination of Lateral Loads and Torsional Loads
Learning Exercise - Theoretical exercise
Analytical Model and Wind Forces on MEFRS
Discussion on Possible Advantages for Using a Wind Tunnel Test
Learning Exercise - Practical exercise
Conclusion
Exam: Weeks 4-8
Week 9: Determine Wind Loads on Roof Mounted Equipment
Introduction
Description of the roof top equipment in conjunction with roof plan and height
Determining velocity pressures for various heights required by the problem
Determining wind force on air handling equipment
Learning Exercise - Theoretical exercise
Determining wind force on chimney
Determining wind force on trussed tower
Determine wind force on solid sign
Learning Exercise - Practical exercise
Conclusion
Week 10: Determine Wind Loads on Tanks and Chemical Processing Equipment
Introduction
Resources and how they are different (ASCE 7 and Wind Loads for Petrochemical and Other Industrial Facilities)
Determine velocity pressures for the various equipment types
Determine wind forces on both large and small tanks
Learning Exercise - Theoretical exercise
Determine wind forces on pressure vessel and cooling tower
Determine wind forces on pipe rack and partially clad open frames
Finding components and cladding wind pressures for industrial equipment
Learning Exercise - Practical exercise
Conclusion
Week 11: Determine Wind Loads on Roof Mounted Solar Collectors
Introduction
Limitations on use of ASCE 7 provisions for roof mounted solar collectors
Solar panel collector layout
Differences in solar panel provisions between sloped panels and parallel to roof panels
Learning Exercise - Theoretical exercise
Describe how differences in building plan affect solar panel layout
Determine wind pressures for the various solar panel configurations
Using C&C pressure coefficients
Practical exercise
Learning Exercise - Practical exercise
Conclusion
Week 12: Determine Wind Loads on Tornado Shelter Subject to EF3 Tornado
Introduction
Review of Tornadoes and their Characteristics
Tornado Shelters
Overview of ICC 500 and ASCE7-22 Standards
Learning Exercise - Theoretical Questions
Development of Tornado Loads for a residential saferoom
Development of Tornado Loads for a 5-Story Office Buildings
Course Review
Learning Exercise – Case study 2
Conclusion
Exam: Weeks 9-12