Concrete Lintel Load Bearing Wall

Do not use off cuts of bricks or blocks.

Concrete lintel load bearing wall.

Box lintels are used for solid wall construction with the 100mm ranges used for single skin internal walls and the 200mm ranges used for double skins typically external walls with no cavity. The lintel is designed to carry the full load of wet masonry as soon as it is installed but must have a minimum end bearing of 150mm each side of the opening and be bedded on mortar with all perpendicular joints filled with mortar. Lintels take the load of the wall above down to the foundations you can see from the image above that a lintel has been inserted into a load bearing wall where an opening has been formed below it. Timber lintels should not be used unless.

The nhbc recommend a damp proof course dpc or cavity tray should be installed over all openings in external cavity walls. Udl means uniformly distributed load which is measured in kilonewtons per metre kn m. Steel lintels in external walls have material coating in accordance with l11 l14 and l16 1 see table 4. 6 10 10 construction of load bearing walls and external infill walls.

Construct a full masonry unit immediately below lintel ends. To provide an opening in it it is necessary to transfer the weight of the load above this new opening to the sections of wall either side by means of a lintel. Certain lintels may need to be propped until the mortar has set under the bearings. In some cases when building under ground level a concrete lintel is the preferred option to a steel lintel.

Galvanised steel will be vulnerable to moisture and potentially rust whereas the steel in a prestressed concrete lintel is protected by the concrete. The weight of the wall a is now bearing down onto the concrete lintel. The length of lintel bearings should not be less than 100mm and 150mm for pressed steel lintels. A load bearing wall is one that supports the structure or structures above it.

The principle is the same however. Ensure the lintel is level and is bedded in mortar. The higher the value the better the load bearing capabilities on the lintel. When installing concrete floor units or other heavy components above a lintel care should be taken to avoid shock loading and floor units should not be dragged into position.

Installing a lintel in a block wall of brick or concrete isn t a difficult task but you will need to be very careful while using the power tools required for the process. Concrete steel and reinforced brickwork are acceptable materials for use as lintels.