Allowable header spans for 5 psf

Allowable header spans for 10 psf

Allowable header spans for 15 psf

Allowable opening widths for Interior Jambs

For opening conditions outside the profiles listed in the above charts, please submit a RedHeader RO Sizing Sheet
to CW Technical Services.

Note: Charts below are based on a Deflection Factor of 0.7
IBC 2000, 2003 & 2006 allows a load reduction of 0.7 times the component and cladding load when determining deflection limits per IBC Table 1604.3, note f. 

Allowable header spans for 20psf (DF = 0.7)

Allowable header spans for 25psf (DF = 0.7)

Allowable header spans for 30psf (DF = 0.7)

Allowable opening widths for Exterior Jambs
(DF = 0.7)

For opening conditions outside the profiles listed in the above charts, please submit a RedHeader RO Sizing Sheet
to CW Technical Services.

Note: Charts below are based on a Deflection Factor of 1.0
1.0 load factor denotes no reduction in component and cladding load when determining deflection limits.  

Allowable header spans for 20psf (DF = 1.0)

Allowable header spans for 25psf (DF = 1.0)

Allowable header spans for 30psf (DF = 1.0)

Allowable opening widths for Exterior Jambs
(DF = 1.0)

For opening conditions outside the profiles listed in the above charts, please submit a RedHeader RO Sizing Sheet
to CW Technical Services.