Header Size Calculator
Header and lintel sizing use the same first-pass beam screen: span, tributary load, section stiffness, bending stress, shear, deflection and bearing.
header size calculator load bearing header calculator header size by opening width
Line load from wall height
w_wall = q_wall * tributary height
Deflection check
delta = 5 * w * L^4 / (384 * E * I)
Use as a screen
This page checks a trial member. It does not replace residential header span tables, manufacturer LVL tables or engineering for unusual load paths.
Related pages
- Lintel size calculator - working opening-width and load screen.
- Beam load capacity calculator - general member capacity workflow.
- Beam deflection calculator - general beam deflection formulas.
- LVL beam calculator - preliminary LVL sizing screen.