Section 01: Industry IntroductionSection 01: Industry Introduction 2 Section Downloads 3 Section...
Transcript of Section 01: Industry IntroductionSection 01: Industry Introduction 2 Section Downloads 3 Section...
1Level 1: Section 01 – Version 3© 2014 SBCA
Section 01: Industry Introduction
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Section Downloads
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Section Downloads
Handouts & Slides can be printed Version 2.1
Other documents cannot be printed
Course binders are available for purchase Not required
Download & Print TTT I Sec 01 Slides
TPI 1-2007 Selection
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Changing the Construction Industry
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Introduction Outline
Early Use of Truss Concepts
Forerunners to Metal Plate Connected Wood Trusses
Truss Configurations
Applications
Advantages Framing The American Dream project
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Triangles
The power of the triangle…not a new idea.
2Level 1: Section 01 – Version 3© 2014 SBCA
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Early Use of the Truss Concept
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Early Use of the Truss Concept
As early as 1560, trusses were used in timber bridges.
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Early Use of the Truss Concept
In 1840, the Howe Truss won a U.S. patent.
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Tension & Compression
Section 02 - Terminology
Axial forces
Tension Compression
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Whipple Truss
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Whipple Truss Bridge
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The Bollman Bridge
ASCE
two 80-ft. spans
Quiz 1
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Forerunners to Metal Plate Connected Wood Trusses
Heavy Timber
Split Ring Connected
Bolt Plate Connected
Plywood Gusset
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Heavy Timber Truss
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Lumber Sizes
Section 05 – Truss Materials
Timber Nominal Thickness ≥ 5"
Board Nominal Thickness < 2"
Dimension 2" ≤ Nominal Thickness ≤ 4 1/2"
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Lumber Sizes
Nominal
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Lumber Sizes
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Heavy Timber LVL Truss
> 2′
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Heavy Timber Connections
Courtesy of Cleveland Steel Specialty
‘TECO Ring’
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Bolt Plate Connected Truss
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Exposed Trusses
Wet Lumber MC in excess of 19%
Decay of Wood Prolonged wetness
Metal Corrosion Double-Dipped Galvanized or Stainless Steel
Paint Coatings
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ANSI/TPI 1 ANSI - American National
Standards Institute
TPI - Truss Plate Institute
1- Standard Number
2007 - Year Published
TPI 1-2007 Selection Section 6.5
Commentary § 6.5
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Bolted Space Frame Truss
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Heavy Timber Truss
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Heavy Timber Truss
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Plywood Gusset
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Industry Pioneers
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Industry Pioneers
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A. Carroll Sanford
Gri-P-Late32
J. Calvin Jureit
Gang-Nail Plate
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Jack Schmitt
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Metal Plate Connected Wood Trusses
Trusses are the major engineered wood component used today $8+ billion industry 80% residential market share
Roof systems greater than 60% market share
Floor systems about 20% market share
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Metal Connector Plates
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Metal Connector Plates
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Metal Connector Plates
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Metal Connector Plates
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Metal Plate Connected Truss Associations
Truss Plate Institute
Structural Building Components Association
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TPI
1961: Organized
Represents truss plate manufacturers
Purpose - maintain industry on a sound engineering basis
Technical Advisory Committee
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CMC / WTCA / SBCA
1961: The Component Manufacturers Council was established within TPI
1983: Organized as WTCA Represents structural wood component
manufacturers
Serves to promote the common interests to ensure
growth, continuity & professionalism
Develops educational materials & programs
2008: Changed name to Structural Building
Components Association42
WTCA
Mission
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www.sbcindustry.com
Quiz 2
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Truss Configurations
overall
height
span (out-to-out of bearings)
cantileverbottom chord length
panel lengthpeak
splice
heel
bearing
web
panel
point
top chord
bottom chord
slope12
overhang
wedge
truss platecontinuous lateral brace
Use the controls below to stop/restart the presentation.
Section 02 – Terminology
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Truss Configurations
Heelheight
Buttcut
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Truss Configurations
standard heelheight < 4”
compressedinsulationin this area
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Truss Configurations
raised heel
9Level 1: Section 01 – Version 3© 2014 SBCA
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8 ft 8 ft 8 ft 8 ft
King PostQueen Post or Fan
Fink Howe30 ft.
Truss Configurations
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Truss Configurations TTB
TTBCONF-D
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Truss Configurations
Stub
Mono Pitch
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Truss Configurations
Hip
Half Hip
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Truss Configurations
Bowstring
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Truss Configurations
Attic Frame
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Truss Configurations
Inverted
Gambrel
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Truss Configurations
Scissors
Half Scissors
Pitch
Pitch/2
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Truss Configurations
Sloping Flat
Vaulted Parallel Chord
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Truss Configurations
Flat Vault
Vault
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Truss Configurations
Studio Vault
Tray or Coffer
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Truss Configurations
Cantilevered Mansard with Parapets
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Truss Configurations
Barrel Vault
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Truss Configurations
Dual Pitch
Clerestory
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Truss Configurations
Tri-Bearing
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Truss Configurations
Polynesian
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Truss Configurations
Double Cantilever
Gable End Frame
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Truss Configurations
Parallel Chord
4x2 With Mechanical Chase Opening
2x4 orientation
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Truss Configurations
cL
Quiz 3
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Applications
Residential roofs and floors
Agricultural
Commercial
Concrete forming
Remodeling
Manufactured (Industrialized) housing
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Hip Roof
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Large Opening Header
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Field Spliced Scissors Trusses
13Level 1: Section 01 – Version 3© 2014 SBCA
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Bracing Guidelines
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Floor Trusses & Mechanical Systems
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Floor Trusses & Girders
Section 07 – Load Development76
Cantilevered Hip Trusses
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Attic Frames
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Agricultural Trusses
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Purlin Trusses
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Truss Columns
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Commercial Buildings
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Mid-Height Bearing Trusses
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Walls & Headers
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Industrial Construction
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Concrete Formwork
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Concrete Formwork
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Top Chord Bearing Floor Trusses
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Compression Rings
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Dome Roof
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Roof Girders
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Roof Girders
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Single Bearing (Umbrella) Truss
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Complicated Roof Truss System
Quiz 4
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Advantages
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Longer Spans
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High Quality Components
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Pre-engineered
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Decreased Material Shortage Delays
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Optimize Wood Use
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Faster Installation
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Design Flexibility
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Economical
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Floor Trusses
105http://support.sbcindustry.com/structuraldetails.php
SBCA Standard Details
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Floor Truss Fact Sheet TTB
TTBFLOOR-D
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Future of Framing Brochure
TTBFUTURE-D
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Framing the American Dream™
TM
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Framing the American Dream™
Stick Frame Component
Total Hours to Construct 401 hrs. 148 hrs.
Total Hour Cost @ $20/hr. for Average FramingCrew Labor (Components used Crane @ $500)
$8,020.00 $3,460.00
Total Board Footage Lumber (Sheathing PanelsSame for Both)
20,400 bd. ft 15,100 bd. ft
Total Cost of Lumber @ $450/1000 bd. ft.(average), Sheathing @ $3748.00 (same for both)and Components at Truss Manufacturer’s SellingPrice
$12,928.00 $14,457.00
Total Lumber and Panel Scrap Generated 17 yards 4 yards
Total Scrap Cost @ $15/yd dumpster cost and 1/2hour/yd to pick up.
$425.00 $100.00
Total Cost for This Example Only $21,373.00 $18, 017.00
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What We Learned From Framing the American Dream™
FAD-D
Quiz 5
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