Page 523 - Forensic Structural Engineering Handbook

Bearing area factor — — — C b — — —

Buckling stiffness factor h — — — — — C T —

Shear stress factor g — — C H — — — —

Column stability factor — — — — C P — — f The curvature factor C c shall apply only to curved portions of glued laminated timber bending h The buckling stiffness factor C T shall apply only to 2-in × 4-in or smaller sawn lumber truss

Form factor C f — — — — — — e The repetitive-member factor C r shall apply only to dimension lumber bending members g Shear design values parallel to grain F v for sawn lumber members shall be permitted to be compression chords subjected to combined flexure and axial compression when

Curvature factor f C c — — — — — —

Repetitive member factor e C r — — — — — — multiplied by the shear stress factors C H . plywood sheathing is nailed to the narrow face.

Incising factor C i C i C i C i C i C i — members.

Flat- use factor d C fu — — — — — —

Volume factor a, c C V — — — — — —

Size Beam stability factor b factor a C F C L C F — — — — — C F — — — — —
Applicability of Adjustment Factors Temp- Wet- erature service factor factor C t C M C t C M C t C M C t C M C t C M C t C M C t — a The beam stability factor C L shall not apply simultaneously with the volume factor C v for glued laminated timber bending members. Therefore the lesser

TABLE 14.1 Load duration factor C D F b F b ′= C D F t F t ′ = C D F v F v ′= — F c F c ′= C D F c ′= F c — E E′= C D F g F g ′= of these adjustment factors shall apply. round timber bending members. bending members.

14.13