How to read a Truss design drawing A B C D E F A G B H I KJ M L U T W X 16 S V P rooF key Q R N O A - Cumulative Dimensions - Cumulative B -APanel Length (feet - Dimensions inches - sixteenths) - Panel Length (feet - inches - sixteenths) CB - Slope DC - Plate Size and Orientation - Slope E - Overall Height D - Plate Size and Orientation F - Bearing Location - Overall Height Ge - Truss Span (feet - inches - sexteenths) - Bearing HF - Plate Offsets Locations I -G Design Loading (PSF)(feet - inches - sixteenths) - Truss Span J - Spacing O.C. (feet - inches - sixteenths) H Plate Offsets K - Duration of Load for Plate and Lumber Design - Design Loading (PSF) L -i Code MJ - TC,- BC, and Web Maximum Indices Spacing O.C. (feetCombined - inchesStress - sixteenths Nk - Deflections (inches) and Span Deflection Ratio - Duration of Load for to Plate and Lumber Design O - Input Span to Deflection Ratio - Code P -LMiTek Plate Allowables (PSI) - TC,Requirements BC, and Web Maximum Combined QM - Lumber R - Reaction (pounds) Stress Indices S - Minimum Bearing Required (inches) n Deflections (inches) and Span to Deflection Ratio T - Maximum Uplift and/or Horizontal Reaction if Applicable - input SpanBracing to Deflection Ratio Uo - Required Member V -PMember AxialPlate Forces Allowables for Load Case (PSi) 1 - MiTek WQ - Notes - Lumber Requirements X - Additional Load/Load Cases r - Reaction (pounds) S - Minimum Bearing Required (inches) T - Maximum Uplift and/or Horizontal Reaction if applicable U - Required Member Bracing V - Member Axial Forces for Load Case 1 W - Notes X - Additional Load/Load Cases
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