Lintel Calculator
Calculate lintel depth, bearing length, and steel reinforcement size for door and window openings.
How to Use the Lintel Calculator
- Enter the clear opening width in metres.
- Enter the wall height above the opening in metres.
- Enter the wall thickness in mm.
- Select the load type and click Calculate.
حالات الاستخدام
- •Sizing lintels for new door and window openings.
- •Checking existing lintels during renovation.
- •Structural assessment after opening extensions.
- •Construction specification preparation.
الصيغة
Lintel depth is proportional to span and load; bearing length ≥ 150 mm or span/10; steel size increases with load category.
الأسئلة الشائعة
What is a lintel?
A lintel is a horizontal structural member spanning a door or window opening to carry wall loads above.
What bearing length is required?
A minimum 150 mm bearing onto the wall on each side is a common requirement; longer spans need more bearing.
Is it free?
Yes, all calculators on OhMyCalc are completely free.