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 the longest lintel I can buy?

Concrete lintels are available in a range of lengths including: 600mm, 900mm, 1200mm, 1350mm, 1500mm and 1800mm. Bespoke lintels are available to order.

How long is a lintel?

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. On top of that, there are other things to be aware of during installation to ensure the lintel is correctly supported and able to do the job expected of it.

How far can lintels span?

Lintel spans of up to 3 meters generally have a minimum of 150 mm resting above the brickwork on either end. Lintel spans of between 3 meters and 6 meters generally have a minimum of 300 mm resting above the brickwork on either end. The lintel should always be bedded on mortar.

Are Catnic lintels load bearing?

All lintels are designed to carry a specific safe working load (SWL). If you are not skilled in the method of load assessment, or the load has not been supplied to you by a third party, for advice please contact Catnic Technical Services on 02920 337900.

Can Catnic lintels be cut?

Can you cut Catnic lintel? While some steel lintel beams can be cut, this is not the case with Catnic products. This is because they feature a reinforced end which if removed will weaken the integrity of the beam. As a result, Catnic advise that their beams are not cut under any circumstances.

How long can you get a Catnic lintel?

Standard lengths are available in increments of 150mm at lengths up to 3000mm, 300mm at lengths from 3000mm – 4800mm (including 4575 but excluding 4500mm).

Are concrete lintels stronger than steel?

Steel lintels are stronger than concrete ones. However, a high strength pressurized concrete lintel has comparable strength and is considerably less expensive.

What size RSJ for 2.5 m span?

Partition load (from Table 1) [kN/m run]Clear span of beam [m]Smallest suitable Universal Beam size [mm x mm x kg/m]5 to 7up to 2.5 2.5 to 3 3 to 4 over 4127 x 76 x 13 152 x 89 x 16 178 x 102 x 19 see Note 2

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.

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What is a 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 are Catnic lintels 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. A typical external solid wall is 200 to 215mm wide and comprises a double thickness of standard masonry units (whether bricks or concrete blocks).

Do concrete lintels need Padstones?

General installation tips for steel and concrete lintels 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 Catnic lintels need DPC?

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.

What length lintel do I need?

Measure the size of the open space between the walls where the door/window frame is fitted. Add a minimum of 150mm to each end. For example, for a structural opening or clear span of 1,800mm, the minimum lintel length required will be 1,800 + 150 + 150 = 2,100mm.

How far can a steel lintel span?

As standard our steel lintels increase in length by 150mm, the two values represent the length of the lintel that the values in that column relate to. If it is 600 | 1200 it means the load span details can be applied to any lintel between 600mm and 1200mm.

Who owns Catnic lintels?

Having been sold to Corus Group, Catnic have developed other steel-based building products, including Qwikpost.

Where are Catnic lintels made?

Catnic is the leading UK manufacturer of steel construction products for the residential sector. Based in Caerphilly, Wales, Catnic brought the original steel lintel to the construction industry in 1969.

What is Alintel?

A lintel or lintol is a type of beam (a horizontal structural element) that spans openings such as portals, doors, windows and fireplaces. It can be a decorative architectural element, or a combined ornamented structural item.

How much should a Catnic lintel overhang?

150mm minimum for all lintels.

How do you install Catnic?

1. Install the lintel with a nominal 150mm bearing at each end.
2. Ensure the total length is 300mm more than the clear span.
3. Make sure the lintel is fully bedded on bricklaying mortar.
4. Check the lintel is level across both the width and the length.

Can prestressed concrete lintels be cut?

Prestressed concrete Lintels may be cut using a high speed diamond cutting disc. … Under no circumstances should the Ultra-Fire Range of Lintels be cut down in size.

How big of a beam do I need to span 20 feet?

Wood beam size for a 20 foot span:- as per general thumb rule, for a 20 foot span, size of wood beam or lumber joist should be 2×14 which placed at 16″ apart from centre used for residential building or projects or construction in which depth of section of beam is 350mm (14″) and width of beam is 50 mm or 2″.

What size beam do I need for a 12 foot span?

A double ply beam can span in feet if there is no overhang beyond it. A double 2×12 beam can span 12 feet, a double 2×10 can span 10 feet, and so on.

Are Padstones always required?

It is also worth noting that padstones are not always necessary. If the combination of loads and wall strength mean that the wall would not be over-stressed, then there is absolutely no point in using a padstone. … Don’t just buy an off-the-shelf padstone and assume that it will be sufficient for any beam on any wall.

Can I use a concrete lintel instead of a RSJ?

You could use a 152×102 prestressed concrete lintels as its only a short span. However you would need a se to do calcs for this type of work. I would recommend UB’S Universal beams (They dont make rsj’s any more)as the price difference would be minimal i would also have them painted in red oxide.

Are all concrete lintels Prestressed?

All of our concrete lintels are prestressed meaning they have heightened strength by way of steel wires, which have been set to high tension running through the middle of the lintel.

What size lintel do I need for a chimney?

Buy a concrete lintel 4″x3″x whatever length required plus some and then cut it to length (ideally using a 9″-wheel angle grinder as a 115mm wheel will not quite get through) and ensure it is long enough to be well supported each end (4″ or 6″ overlap, see next paragraph).

Why do lintels fail?

The most common reasons for lintel failure are faults with the lintel such as the corrosion of the steel. It’s important to note that lintels may be cracked or blown due to other structural issues such as movement in the wall or foundations.

Can you use engineering bricks as Padstones?

For padstone sizes less than 215mm x 100mm, engineering bricks will be suitable.

Do I need building regs for a lintel?

Yes, if the alterations are of a structural nature. … The insertion of a beam or lintel which affects the structural stability of the building will also require approval.