Prestressed concrete lintel CARLSBERG BJÆLKER™

load-bearinghorizontal

Pre-stressed 1- and 2-layer lintels rarely have to support any loads, as the back-up walls represent the bearing structure for a roof or a floor division. By using TB-Trough instead of traditional roofing felt over brick lintels, an improved strength of the brick beams is achieved. Pre-stressed lintels guarantee that: No displacement cracks appear through support A lintel never lays or presses on window and door frames The crossbars - on which the brick beams lay - must be on both sides at least 1/2 bricks. Up to 12 bricks (2,870 mm) long. Used for light distances of maximum 2,630 mm. Up to 22 bricks (5,270 mm) long. Used for light distances of maximum 5,040 mm. The existing masonry doesn't represent a load for the pre-stressed front lintel, as long as no masonry paper is inserted in the length joints, as the lintel and the masonry form a composed brick beam. On the contrary, it relieves, because it divides the load. The number of the masonry layers lying over the lintel is thus important for the calculation of the correct lintel size. For the gable surface it's important to consider the minimum number of layers, as well as the maximum. The sizing and static calculation are included in the price, in the case of pre-stressed lintels in standard format, from Carlsberg Bjælker™.