What is a Catnic lintel used for?
Box lintels are a versatile form of structural support, easily coursed in with standard masonry units in solid external walls, masonry cavity walls, and internal walls.
What is the maximum span for a Catnic lintel?
Product Benefits Standard lengths are available in increments of 150mm at lengths up to 3000mm, 300mm at lengths from 3000mm – 4800mm (including 4575 but excluding 4500mm). The SWL (safe working load) is based on the total UDL (uniform distributed load) over maximum span using 150mm end bearings.
What is Catnic lintel?
The Catnic Thermally Broken Lintel, or TBL, is a type of thermally broken steel lintel for use in masonry cavity wall build-ups. It provides support over structural openings such as doors and windows, while minimising linear thermal bridging heat loss compared to conventional cavity lintels.
What is the minimum bearing for a Catnic lintel?
150mm
Lintels generally require a nominal minimum end bearing of 150mm at both ends, meaning the total lintel length is the span of the opening plus 300mm.
When would you use a lintel?
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 are Catnic lintels made from?
Initially, Catnic standard lintels are manufactured from hot-dipped galvanised steel to BS EN 10346: 2009 plus coating type Z275. A coating of thermal setting polyester powder is then applied by an electrostatic process, further protecting the lintel.
Do I need building regs for a lintel?
but normally under normal or usual conditions to many people do not apply, but for the peace and safety reason , as a rule I would say YES, alterations of a structural nature require Building Control approval. Generally, the installation of a beam or lintel is required.
How do I calculate the load on a lintel?
Where the lintel is supporting only masonry, the load ratio is generally 1:1. Typically this increases to 3:1 (inner to outer leaf) for lintels carrying timber floor loads, and 5:1 where concrete floor used. In eaves applications, the load ratio is 19:1.
Who owns Catnic lintels?
Today. Having been sold to Corus Group, Catnic have developed other steel-based building products, including Qwikpost.
Do you always need a lintel?
If the work that you’re carrying out on your property compromises the structural integrity, then a lintel is required. The lintel material used will depend on the structure of your property. Timber-framed buildings need load-bearing support, and therefore you may need additional lintel support.
Can you cut a Catnic lintel?
It is important that lintels are installed as supplied and not cut or modified without seeking advice from the manufacturer.