How much bearing does a Catnic lintel need?

How much bearing does a Catnic lintel need?

How much bearing does a Catnic lintel need?

The lintel must be installed with a nominal 150 mm bearing area at each end, meaning that the total length should be 300 mm more than the clearspan. The lintel should be fully bedded on bricklaying mortar and level both along its length and across its width.

Are lintels load bearing?

A lintel is a structural horizontal support used to span an opening in a wall or between two vertical supports. It is frequently used over windows and doors, both of which represent vulnerable points in a building's structure. Lintels are generally used for load-bearing purposes, but they can also be decorative.

What lintel do I need for a load bearing wall?

What size concrete lintel do I need? The lintel should be installed with a minimum end bearing of 150mm, so measure your opening and add at least 300mm. Unlike steel lintels, a concrete lintel is often used in visible areas and painted if required.

Do I need a heavy duty lintel?

There are generally standard, heavy duty and extra heavy duty lintels available. Standard-duty lintels should only be used where there are triangulated masonry loads, uniformly distributed masonry and timber loads, i.e where there are no point loads from beams. In general, lintels are suitable: Up to three storeys.

What is the minimum bearing for a lintel?

Lintel bearings Ensure the lintel is level and is bedded in mortar. The length of lintel bearings must be no less than 100mm with the manufacturers recommendations for minimum end bearing followed on all occasions.

Is it OK to drill into a lintel?

Due to how tough lintels can be it is recommeneded that you only use an SDS drill and drill bits. When drilling any holes it is also important that you hold your drill straight so that the hole you drill is also straight.

Are concrete lintels stronger than steel?

Strength. It is not a myth that steel lintels are stronger than concrete; this is generally the case, but it is a little more complicated. A high strength prestressed concrete lintel can often offer better supporting properties than a similar steel version at certain lengths and can be considerably cheaper.

How far should a lintel overhang?

Lintels should be installed with a minimum end bearing of 150mm at each end, and should be levelled and fully bedded on bricklaying mortar. Masonry may overhang the supporting lintel by a maximum of 25mm.

What should a lintel sit on?

The lintel should be bedded on mortar and levelled both along the lintel and across its width. Full bricks, blocks or padstones should be used as bearing areas. DO NOT bear lintels onto cut blocks.

What are the different types of Catnic lintels?

Loads replicate existing safe working loads of the existing Catnic CG, CH & CX lintel ranges allowing simple conversion Range Cavity widths from 90 to 165 mm Standard duty, heavy duty and extra heavy duty lintels Standard and wide inner leaf options Mitred corner and bay window lintel Installation No propping during construction

Can a lintel be carried by an outside leaf?

Furthermore, where the lintel carries an external cavity wall, no more than half of the safe working load should be carried by the outer leaf. Also, before concrete floor loads are applied, make sure the total loads have been checked by a structural engineer or the Catnic technical team.

What is the minimum bearing length for lintel?

Table 5: Lintel bearing Minimum bearing length (mm) Span (m) Simple lintel Lintel combined with cavity tray Up to 1.

Do you need damp proof course for Catnic lintels?

It is a National House Building Council (NHBC) requirement to apply a damp proof course (DPC) over each lintel to protect it. Many Catnic lintels feature a Duplex Corrosion Protection coating and a unique profile shape that acts as a built-in DPC.


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