All headers require the attachment of the HDSC™ Clip at each end with headers installed open side up.
Recommended HDSC™ Clip attachments above are based on the jamb stud thickness being equal to or greater than header thickness.
Header framing was calculated with a sill height of 0" for worst case design.
Section properties are based upon the AISI S100-16 (2020) w/S2-20.
Increase strength in cold work of forming was used per AISI S100 section A3.3.2
For deflection calculations, the effective moment of inertia was used. Reference the AISI S100 commentary B5
On exterior framing, lateral deflection calculations are using 0.7 times the wind load.
Dead load deflection calculations are limited to L/240 or 0.5" max. deflection.
For Wall Dead Load calculations, 12 psf is used for exterior framing.
Header lengths should be ordered 1/2" shorter to fit inside clips. Listed capacities are based on a maximum gap between the clip and the end of the header of 1/4".
Spans listed are based on unpunched members.
Span tables are based on ASD load capacities for the HDSC clip.
Jamb Design Table Notes
This table is based on the sill heights listed in the table and the condition where the opening is centered in the jamb span. Other conditions may result in differing results.
Opening widths are limited to 16'-0" for 3-5/8" & 4" members and 20'-0" for 6" & 8" members.
On exterior framing, lateral deflection calculations are using 0.7 times the wind load.
Physical properties and this table have been calculated in conformance with the AISI S100-2016 (2020)
Effective properties incorporate the strength increase from the Cold Work of Forming as applicable per AISI S100-2016 (2020) w/S2-20 section A3.3.2.
The strength analysis included separate bending and shear checks plus the combined interaction of bending and shear effects per section H2 of AISI S100-2016 (2020) w/S2-20.
The strength analysis included separate bending and axial load checks plus the combined interaction of bending and axial load effects per section H1 of AISI S100-2016 (2020) w/S2-20.
Web crippling strength check includes both single stud per section G5 of AISI S100-2016 (2020) w/S2-20 and stud-to-track connection per section B3.2.5.1 of AISI S240-20.
Single stud web crippling strength is based on minimum of all conditions and load cases in Table G5-2 of AISI S100-2016 (2020) w/S2-20.
The tabulated values for flexural stress were based upon a fully braced side jamb.
This table is not applicable for axial load bearing walls but is applicable for non-axial load bearing walls.
Tables were prepared using a 16" o.c. spacing from the jamb stud to the first adjacent typical wall stud.
Wall base track is assumed to be 18ga (43mils) minimum thickness with one screw per stud flange. Wall top connection is assumed to have a minimum 1.25" bearing on the top track.
