Head of openings in cavity walls.

Tuesday, February 1, 2011

The brickwork and blockwork over the head of openings in cavity walls has to be supported. Because of the bonding of brickwork and blockwork over the opening it is necessary to provide support for the weight of the brickwork or blockwork within a 450 isosceles triangle formed by the stretcher bond and the weight of floors and roofs carried by the wall over the opening.

The comparatively small loads over small openings are carried by a lintel or arch. With the adoption of cavity insulation as a principal method of enhancing the resistance of walls to the transfer of heat and the need to continue cavity insulation up to the back of window and door frames to minimise cold bridges, it is practice today to use lintels to support the inner and outer leaves over openings.

Related Posts by Category:




0 comments:

Post a Comment

 
 
 

Labels