Structural Loads Part 1 Civil Engineering and Architecture
- Slides: 30
Structural Loads Part 1 Civil Engineering and Architecture Unit 6 Structures
Engineering Failures
In this lesson: Forces and Loads Beams and Columns Building Design Problem with calculations
Structure of a Building
Structural Characteristics Stability Strength Economic Value
Structural Elements Stringers or Beams Girders Columns Footings Connections
Steps in Structural Design Plan Create preliminary design Establish the loads Size the members Analyze the members Evaluate and compare to preliminary design Redesign
Design Loads: Live vs Dead Snow Live Load Walls, Floors, Materials & Structure Dead Load Roof Materials & Structure Dead Load Occupants, Moveable Fixtures & Furniture Live Load
Typical Building Live Loads Please click here to obtain Live Load Chart.
Dead Loads Weight of the structure (steel, concrete, timber) Electrical fixtures Partitions/ Walls Roof coverings Ductwork Ceiling Piping Floor coverings
Typical Building Dead Loads Please click here to obtain Dead Load Chart.
Snow Loads Ground Snow Load (in NY State) – Rochester, NY – Albany, NY – Watertown, NY – White Plains, NY 50 lb/ft 2 55 lb/ft 2 65 lb/ft 2 45 lb/ft 2
Design Loads: Wind D N WI t if pl U re u s s e Pr Suc tion
Designing for Wind Loads Dead Load Addition of Steel beams and bracing Floor slab
Design Loads: Earthquake
Structural Efficiency Dead Load Live Load Professional Development Lesson ID Code: 8008
Dead Loads * 1. 4 Live Loads * 1. 7
Loads and Load Paths Snow and/or Roof Load Fixture and Occupancy DL &LL Weigh of Structure DL Ground Reaction
Beam Design
Beam Deflection
Beam Deflection Formula Deflection – L/240 of the total load Used if there is no plaster/drywall on underside L/360 of the total load Used if plaster/drywall is used
Beam Types Simple Continuous Cantilever Moment fixed at one end
Supports Pin Connection Roller Connection Fixed Support
Columns Designed for compression. Additional loads can cause bending in the columns. F (External) WCOL (External) R 1 (Internal) R 2 (Internal) WFTG (External) RSoil (External)
Building Design Problem A Steel Framed Retail Building with Concrete Floors and Flat Roof Please click here to obtain Revit file of the building.
Second Floor Framing Girder Beam Footing Column
Design Steps
Curriculum Alignment: Unit 6 – Structural Engineering Lesson 6. 1 – Introduction to Structural Engineering Act. 1. 1 – Structural Calculations Act. 1. 2 – More Load Calculations Lesson 6. 2 – Roof Systems Lesson 6. 3 – Columns and Beams
References: Jefferis, A. & Madsen, D. A. (2001). Architectural Drafting and Design, Albany, NY: Delmar Kane, K. & Onouye B. , (2002). Statics and Strength of Materials for Architecture and Building Construction, 2 nd ed. , Saddle River, NJ: Pearson Education, Inc Shaeffer, R. E. (2002). Elementary Structures for Architects and Builders, 4 th ed. . Columbus, OH: Prentice Hall Manual of Steel Construction, 8 th ed. , American Institute of Steel Construction http: //pbs. org/wgbh/buildingbig/lab/forces. html
Credits: Writer: Constance Bertucci Content Editor: Donna E. Scribner Narration: Donna E. Scribner PLTW Editor: Ed Hughes Production: CJ Amarosa Video Production: CJ Amarosa Audio: CJ Amarosa Project Manager: Donna E. Scribner
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