Module 6
This presentation is the property of its rightful owner.
Sponsored Links
1 / 13

STRUCTURAL FRAMING INSPECTION I PowerPoint PPT Presentation


  • 73 Views
  • Uploaded on
  • Presentation posted in: General

MODULE 6. STRUCTURAL FRAMING INSPECTION I. Building Subsystems. structural framing & foundations enclosure systems plumbing lighting acoustics safety systems electric power & signal systems HVAC. Transfer of forces acting on the building.

Download Presentation

STRUCTURAL FRAMING INSPECTION I

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Module 6

MODULE 6

STRUCTURALFRAMINGINSPECTION I


Building subsystems

Building Subsystems

  • structural framing & foundations

  • enclosure systems

  • plumbing

  • lighting

  • acoustics

  • safety systems

  • electric power & signal systems

  • HVAC


Transfer of forces acting on the building

Transfer of forces acting on the building

  • foundation systems are designed to transmit loads from the structural system directly to the ground

    • settlement of the completed building must be within acceptable limits

  • structural systems should be designed to transfer its loads to the foundation

    • its design must be anticipated in the foundation design


Transfer of forces acting on the building1

Transfer of forces acting on the building

  • most building structural systems consists of

    • floors

    • roof decks

    • horizontal members that support the floor and or roof

    • vertical members that support other components

  • floor and roof decks or beams that support them, are usually on load bearing walls or columns which carry the load downward

  • structural systems must be designed to transmit vertical and horizontal loads to the foundations


Transfer of forces acting on the building2

Transfer of forces acting on the building

  • vertical walls and columns carry vertical loads downward but

    • acting alone they are inadequate to resist lateral forces

  • to help counteract lateral forces

    • bracing can be implemented into the system

    • beams can be connected to columns to produce a rigid frame to resist lateral movement

    • long walls known as shear walls, in two perpendicular directions act like vertical beams in transmitting forces to foundations


Trusses

Trusses

  • the strength of the metal connector plates ( gang plates, truss plates) depends on the

    • grip of the teeth

    • shear and tensile capacity of the steel plates

  • identical truss plates are placed directly opposite each other on opposite faces


Trusses1

Trusses

  • when a truss is axially loaded, the wood fibers press against the teeth and they transfer the load throughout the remaining un-perforated sections of the plate

  • permanent bracing of a roof truss system is done in the field and must comply with the approved drawings


Principles of wood construction

Principles of wood construction

  • when in tension, wood is strongest parallel to the grain

  • if the cross-sectional area of a wood member is reduced by holes

    • the net area is reduced

    • the stress-concentrating effect must be considered when figuring out allowable loads

  • under constant loads, wood deflection will increase slightly with time


Principles of wood construction1

Principles of wood construction

  • wood is very strong when

    • shear is perpendicular to the grain

  • wood is not as strong when

    • shear is parallel to the grain

  • wood is graded by

    • species (type of wood)

    • grade (#1, #2, #3, stud grade)

    • grade-marking agency

    • moisture content


Principles of wood construction2

Principles of wood construction

  • wood is a natural insulator

    • 1 ¼” = RSI 0.22 (R 1.25) batt insulation for 1 ¼” has R 3.25

  • wood can be fire rated by being pressure treated with fire-retardant elements

  • wood that is pressure treated for fire or preservative effects do not loose significant strength


Assignment

assignment

  • Perform exercise #1, questions 1 to 23

  • Q 22

  • Summarize the general rules governing stud posts built into walls.

  • Q23

  • What general rules govern floor framing supported on flat insulating concrete form walls?


  • Login