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MITEK ROOF AND FLOOR TRUSS MANUAL - Madera …

MITEK roof ANDFLOORTRUSSMANUALFORARCHITECTSAND ENGINEERSMiTek Industries, N. Outer Forty Suite 300 Chesterfield MO (Fax) intersection of two or more members.(Also referred to as a Panel Point.)Joint SpliceA splice of the 4x2 chordmember at a chord-and-web short partition stud wall toincrease a wall height, typically from theconcrete wall plate to the FLOOR BraceA member placed andconnected at right angles to a chord or webmember of a ReturnA lumber filler placedhorizontally from the end of an overhang tothe outside wall to form a RatioThe ratio of the TRUSS span (L) toits depth (D), both dimensions in LoadAny temporary applied load to afloor TRUSS chord; typically roof live load issnow, while FLOOR live loads are furniture,human occupancy, WallA wall specificallydesigned to transfer a roof load and/orupper FLOOR load into the Stress Rated Lumber (MSR)Lumber which has been individually testedby a machine at the lumber mill todetermine its structural design Lumber is designated by a flexural(bending) stress and Modulus of Elasticity, , Content of WoodThe weight of themoisture in wood expressed as a percentageof its oven-dry structural measure of the effectsof b

MITEK® ROOF AND FLOOR TRUSS MANUAL FOR ARCHITECTS AND ENGINEERS MiTek Industries, Inc. 14515 N. Outer Forty Suite 300 Chesterfield MO 63017 800.325.8075 • …

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Transcription of MITEK ROOF AND FLOOR TRUSS MANUAL - Madera …

1 MITEK roof ANDFLOORTRUSSMANUALFORARCHITECTSAND ENGINEERSMiTek Industries, N. Outer Forty Suite 300 Chesterfield MO (Fax) intersection of two or more members.(Also referred to as a Panel Point.)Joint SpliceA splice of the 4x2 chordmember at a chord-and-web short partition stud wall toincrease a wall height, typically from theconcrete wall plate to the FLOOR BraceA member placed andconnected at right angles to a chord or webmember of a ReturnA lumber filler placedhorizontally from the end of an overhang tothe outside wall to form a RatioThe ratio of the TRUSS span (L) toits depth (D), both dimensions in LoadAny temporary applied load to afloor TRUSS chord; typically roof live load issnow, while FLOOR live loads are furniture,human occupancy, WallA wall specificallydesigned to transfer a roof load and/orupper FLOOR load into the Stress Rated Lumber (MSR)Lumber which has been individually testedby a machine at the lumber mill todetermine its structural design Lumber is designated by a flexural(bending) stress and Modulus of Elasticity, , Content of WoodThe weight of themoisture in wood expressed as a percentageof its oven-dry structural measure of the effectsof bending on a member due to RiseVertical distance frombottommost part of the bottom chord touppermost point on extension of the top chord ofa TRUSS beyond the heel for Parallel Chord TRUSS ,the TRUSS Plate Institute (TPI)

2 Specificationdesignation for trusses with parallel chordsand 4x2 chord orientation, titled DesignSpecification for Metal Plate ConnectedParallel Chord 4x2 Wood Trusses .PLFP ounds per lineal foot, acting along astructural member, usually equal to theuniform load (PSF) times the TRUSS per square foot of uniform LengthThe distance between thecenterlines of two consecutive joints alongthe top or bottom chord segment defined by twoadjacent PointThe point where a web or websintersect a on TRUSS where the sloped topchords of vertical rise for each 12inches of horizontal horizontal wood framing member,typically the top and bottom 2x4 members ofa stud wall and the 2x6 sill plate bolted to aconcrete wall for FLOOR structural , the use of the entire floortruss cavity formed by the FLOOR above andthe ceiling below as a supply or return air duct.

3 Plumb CutTop chord end cut to provide forvertical (plumb) installation to fascia (facetrim board).Plumb RiseVertical overall measurementsat the end of a TRUSS where the top andbottom chords PlatesConnector Plates pressedinto the top and bottom 3-1/2" faces of two4x2 chord members prior to final FLOOR trussassembly to achieve a structural chord structural components,spanning between primary structuralmembers and supporting the Pointpoint on triangular, Fink or Howetruss where the webs connect to the top PointPoint on triangular, Fink trusswhere the webs connect to the total load transferred from theuniform load (PSF) applied to the FLOOR trussdeck, then into the FLOOR TRUSS , and ultimately,to the FLOOR TRUSS bearing or formed by TRUSS JoistAn exterior transition membersupporting the decking edge and wallsheathing, usually tying the ends of floortrusses together.

4 (Also referred to as aRibbon or Band Board.)RiseVertical distance from bottom most partof the bottom chord to inside of the timber connected to a trussto effect a splice, extension or DrawingDetailed drawings of a rooftruss or roof framing showing criticaldimensions such as span, overhang,cantilever, slope, centerline-to-centerlinedistance between overall distance between adjacentinterior supports or to the outside of supportswhen at the end of a TRUSS . (See detail above.)Splice Point(Top & Bottom chord splice). Thepoint at which two chord members are joinedtogether to form a single member. It mayoccur at a panel point or between panel CutEnd of top chord cutperpendicular to slope of the 2x6 lateral brace, used withits long dimension in a vertical orientation,running perpendicular to the trusses, andattached to the TRUSS vertical web structural element resisting thetruss, usually a wall or beam.

5 (Also referredto as a Bearing.)Symmetrical TrussTruss with the sameconfiguration of members and design loadingoccurring on each side of TRUSS ChordThe continuous 4x2 memberforming the top of the FLOOR Chord BearingA FLOOR TRUSS supportcondition in which the TRUSS load istransferred to the bearing or support throughthe top chord and 4x4 block end the 4x4 block length is extended, thisis referred to as Mid-Chord pre-built component that functions asa structural support member. A TRUSS employsone or more triangles in its component designed toprovide structural connection of trusses towall plates to resist wind uplift Grade LumberLumber which has beenvisually rated at the lumber mill for structuralproperties through rules established bynational lumber species TrussA general TRUSS configurationwith repetitive web W orientation.

6 For floortruss applications, the top and bottom chordpanels are typically 30" length, usually witha 24" wide rectangular chase or ductopening at the vertical or inclined member connectingthe top and bottom chords of a TRUSS . 192 GLOSSARY OFTERMSH eadquartered in St. Louis, Missouri, MITEK Industries, Inc. is the leadingsupplier of connector plates, trussmanufacturing equipment, designsoftware, and engineering services for the worldwide component over 35 years MITEK companies have developed and refined theirconnector plates into the state-of-the-artproducts they are anddependable!With MITEK you re assured of the bestquality. MITEK connector plates aremanufactured under strict quality controland undergo extensive testing in our R & D s connector plates meet or exceedall building code and industry associationrequirements.

7 Acceptances includeBOCA, ICBO, HUD/FHA, SBCCI,Dade County, Wisconsin/ DILHR, andLA City. MITEK also offers the very best inframing layout and engineering softwarefor roof and FLOOR trusses, as well as wallpanel design. These programs provideour fabricators with fast and accuratelayout and design engineering department is availableto review and seal our customers offices in NC, Missouri andCalifornia, MITEK s professional engi-neers can furnish seals for all 50 states!Look to a MITEK fabricator for the bestthe industry has to offer! This brochurereviews the benefits of roof and floortrusses, but MITEK fabricators also offer a full line of builders hardware and acomplement of other building compo-nents including wall panels and MITEK , we are committed toproviding the best products and services in the industry and will continue ourtradition of customer.

8 2 Wood TRUSS Advantages ..3 TRUSS Advantages .. 3 Handling, Installation and Bracing ..4 Basic roof TRUSS Configurations ..5-6 Construction DetailsSupport Details ..7 Joint Details .. 8 Lateral Bracing Information .. 9 Cantilever Framing .. 10 Stairway Framing ..11 Technical InformationArchitectural Specifications ..12 Recommended Depth, Deflection and Camber Limitations ..12 Construction Guidelines ..12 Mechanical Service Guidelines .. 13 Cantilever Concentrated Loads .. 13 FLOOR Decking Information .. 14 Connector Plate Code Approvals .. 14 Fire Rating Information .. 15 Sound Transmission Ratings .. 16 Construction Material Weights .. 16 Representative FLOOR and roof Loads .. 16 FLOOR Loading Max-Span Information .. 16 FLOOR Loading Max-Span Tables .. 17 Glossary of Terms ..18-19 TABLE OFCONTENTSPAGE , FLOOR TrussSpan TRUSS LengthSpan No.

9 230 Panel60 Panel Modu;eTrussDepthCantivelerLength318 ARCHITECTS ANDDEVELOPERS Savings in design costs-one basicstructural design for shell with minor FLOOR plan variations. Better project cost control, with component costs known in advance. Better cash flow with earlieroccupancy due to reduced on-sitelabor. Faster shell completion time. Using trusses of smaller dimension lumber, in place of beams and columns. Greater flexibility in locatingplumbing, duct work, and electrical wiring. FLOOR plan freedom in locatinginterior partitions often withoutadditional support Pre-determined, pre-engineeredtruss system. Fewer pieces to handle and reduced installation time. Wide 3-1/2 nailing surface for easy FLOOR deck application. Eliminate notching and boring joists for electrical wiring and plumbing.

10 FLOOR trusses offer better availability and less in-place cost than 2x8 or 2x10 joists. Factory-manufactured components to exact span requirements. Reduced HVAC, plumbing, and electrical subcontractor time on job. No column pads to pour, no steel beams and posts to place. Job site material pilferage and cutting waste Lower construction costs. Clearspan flexibility. More flexibility in architecturalappearance and FLOOR plans. Easier remodeling possibilities inmoving interior ANDFLOORTRUSSADVANTAGESGLOSSARY OFTERMSWHYUSEWOODTRUSSES?CONTRACTORSANDB UILDERSKNOW!Contractors and Builders know thata MITEK engineered roof or floortruss system ensures quality costs are known in advance,there s no guesswork. Your siteerection time is greatly reduced anddollar losses from job site materialshortages and pilferage areeliminated.


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