Frames and Walls Lateral Stability

Frames and Walls Lateral Stability

Frames and Walls Lateral Stability

A beam simply supported by two columns is not capable of resisting lateral forces unless it is braced.

If the joints connecting the columns and beam are capable of resisting both forces and moments, then the assembly becomes a rigid

frame. If we fill in the plane defined by two columns

and a beam, it becomes a loadbearing wall that acts as a long, thin column in transmitting forces to the ground.

Any opening in a loadbearing wall weakens its structural integrity. A lintel or arch must

support the load above a door or window opening and allow the flow around the opening to sections of the wall

Lateral Stability The structural elements of a building must be

sized, configured, and joined to form a stable structure under any possible load conditions. A structural system must be designed to not

only carry vertical gravity loads, but also withstand lateral wind and seismic forces from any direction.

Lateral Forces They are considered to act parallel to the

ground plane They may occur at many angles other than the horizontal

Types of Lateral Forces External Lateral Forces:

1.Wind Force 2.Seismic Force 3.Fluid pressure from water and other liquid

4.Soil against a basement or retaining wall 5.Sand, grain, coal or wood chips in a storage bin

Wind Load is influenced greatly by local terrain

Upon contact with a building, it can produce pressure and suction forces on any surface of a building and the pressure will tend to

balloon the building outward. Seismic Load forces generated by inertia of

building mass as ground moves below the structure The effect is internal

Flood waters can produce devastating effect and can destroy foundations of bridges and

buildings Internal Lateral Force restrained movement

associated with temperature change If prevented from expanding or contracting, a material will undergo internal forces and

stresses. Horizontal Diaphragm

A rigid floor structure, acting as a flat, deep beam, transfers lateral loads to vertical shear walls, braced frames or rigid frames

Rigid Frame a steel or reinforced concrete frame with rigid joints capable of resisting

changes in angular relationships. Shear Wall a wood, concrete, or masonry wall capable of resisting changes in shape and

transferring lateral loads to the ground foundation. Braced Frame a timber or steel braced with

diagonal members. Structural Patterns

References:

http://arch.umd.edu/Tech/Tech_III/Lectures/Lateral_Forces_&_Framing/I ntroduction_to_Lateral_Forces.pdf

Building Construction Illustrated Francis DK Ching Fourth Edition

Recently Viewed Presentations

  • FOTOS E ENCONTROS HISTÓRICOS - WordPress.com

    FOTOS E ENCONTROS HISTÓRICOS - WordPress.com

    Michael Jackson, Francis Ford Coppola e George Lucas Paul Newman e Robert Redford Eric Clapton e George Harrison Susan Anton, Sylvester Stallone & Andy Warhol Sophia Loren & Jane Mansfield Julie Andrews e Audrey Hepburn The Beatles e Little Richard...
  • Mercantilism - chester.k12.sc.us

    Mercantilism - chester.k12.sc.us

    Mercantilism . Have your answer sheet ready! Minimize the video and follow the PowerPoint instructions. Watch the video. Stop at 0.22. Define Mercantilism . 4 Rules of Mercantilism . Rule #1. Stop at 0.40. 4 Rules of Mercantilism . Rule...
  • Kein Folientitel - European Commission

    Kein Folientitel - European Commission

    Aid higher in prosperous M/S than in cohesion countries Being redirected to horizontal objectives Justice and Home Affairs Crime and corruption deter investors More controls and co-operation needed Better integration of 3rd country nationals Of special benefit to new M/S...
  • Rajeev Krithivasan Arjun Sinha Will Sergeant Rolling in

    Rajeev Krithivasan Arjun Sinha Will Sergeant Rolling in

    Rajeev Krithivasan Arjun Sinha Will Sergeant Rolling in the Deep Objectives Allow a DJ or party host to set up a playlist for a party Guests connect to our system to "cast votes" on the playlist songs Playlist is sorted...
  • IRS IT Overview - United States Department of the Treasury

    IRS IT Overview - United States Department of the Treasury

    Office of Information Technology IRS PROCUREMENT ORGANIZATION FACTS Obligate 1.8 Billion Per Year Spend 20% of IRS Budget 505 People Nationwide Manage 15.5 Billion in Contract Administration Contracting Support for Treasury in Several Major IT Awards Tips for Small Business...
  • Budget Project Vocabulary - Woodland Hills School District

    Budget Project Vocabulary - Woodland Hills School District

    Health Insurance. A health maintenance organization (HMO) is a type of managed care organization (MCO) that provides a form of health care coverage in the United States that is fulfilled through hospitals, doctors, and other providers with which the HMO...
  • Country Report -- USA Presented at the IEA

    Country Report -- USA Presented at the IEA

    Improved fundamental understanding of process steps and product properties Improved understanding of economics * the DOE OBP view this presentation is about one route through thermochemical conversion of biomass to biofuels fast pyrolysis and catalytic hydroprocessing of the resulting bio-oil...
  • Research and the Common Core: Can the Romance

    Research and the Common Core: Can the Romance

    PowerPoint Presentation PowerPoint Presentation PowerPoint Presentation PowerPoint Presentation Kintchian Model The vision of comprehension in the CCSS maps on to important theoretical and curricular research PowerPoint Presentation Common Core NAEP PowerPoint Presentation Kintsch's Construction-Integration Model Freebody and Luke's 4 ...