How much bearing does a lintel need?
A common minimum end bearing for a domestic lintel is 150mm at each end, so a lintel is usually 300mm longer than the clear opening. Always check the manufacturer schedule and loadings.
Lintels need to sit far enough onto the masonry at each end to spread the load safely. For most domestic openings a minimum end bearing of 150mm each side is standard, which means ordering a lintel around 300mm longer than the clear structural opening.
Wider spans and heavier loads can call for greater bearing, and the correct lintel type and duty must come from the manufacturer load tables and the structural design for the job.
Otis helps a customer identify the right lintel length and type from the opening size, checks stock and prices it for the account, while pointing them to the manufacturer schedule.
General guidance for the trade. Always follow current Building Regulations, manufacturer instructions and the specifics of the job.
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