Which lintel?

[da3533]

Hello

i want to raise the height of the garage door to install a new one. Currently, as shown in the picture attached, there is a 9x4inch timber (double) holding up the bricks above.

I want to use a concrete lintel and was told that x2 9x4 inch would be good but could be too large and maybe too heavy for to install.

The width of the opening is 247cm
The width of the garage is about 360cm.

I will be doing the job so i rather not rent out a lift and just rather get a steel one to make it easier...

was looking at something like this:

Catnic

Since 1969, Catnic has pioneered steel lintel design for UK house building and established itself as a multinational manufacturer.

catnic.com

Thereafter, i will redo the bricks to the top.


What do you guys recommend?

Thanks

 

[wessex101]

The CN71C isn't long enough but the CN81C should do it.

 

[da3533]

it will be supporting 3.2m x 1m of bricks (solid double brick wall)

isn't a 6x4 inch suppressed concrete lintel enough ?

I have calculated this as the load.

102.5mm Brickwork

2.00 kN/m²

So 3.2m2 x 2.00 = 6.4Kn x 2 (double brick) = 12.8Kn

So maybe it is an overkill to use a 6x4inch concrete lintel.

 

[Notch7]

it will be supporting 3.2m x 1m of bricks (solid double brick wall)

isn't a 6x4 inch suppressed concrete lintel enough ?

Easier to lift a catnic into place

 

[da3533]

I have calculated this as the load.

102.5mm Brickwork

2.00 kN/m²

So 3.2m2 x 2.00 = 6.4Kn x 2 (double brick) = 12.8Kn

So maybe it is an overkill to use a 6x4inch concrete lintel.

which concrete lintel size would be sufficient? 6x4? i will just hire a genie to put in place...

 

[Charlie George]

I have calculated this as the load.

102.5mm Brickwork

2.00 kN/m²

So 3.2m2 x 2.00 = 6.4Kn x 2 (double brick) = 12.8Kn

So maybe it is an overkill to use a 6x4inch concrete lintel.

which concrete lintel size would be sufficient? 6x4? i will just hire a genie to put in place...

You would need 2 concrete lintels, external one on show, better using the steel lintel as suggested, add up the cost of 2 concrete lintels plus Genie hire.

 

[da3533]

You would need 2 concrete lintels, external one on show, better using the steel lintel as suggested, add up the cost of 2 concrete lintels plus Genie hire.

Hi

Yes that’s true. Good point.

with this steel one as stated above, does the box need to be filled with anything? Just never used one before

 

[Charlie George]

No, just build on top of box section at the back, which will be seen but not matter in a garage.

Catnic External Solid Wall Lintel CN81B 2850mm

Catnic CN81B 2850mm

condell-ltd.com

 

[da3533]

No, just build on top of box section at the back, which will be seen but not matter in a garage.

Catnic External Solid Wall Lintel CN81B 2850mm

Catnic CN81B 2850mm

condell-ltd.com

Thanks

Quick qs. Does the bearing have to be 150mm similar to concrete lintels?

 

[Charlie George]

Thanks

Quick qs. Does the bearing have to be 150mm similar to concrete lintels?

For that type of lintel probably yes, for your size opening a standard 2700mm (and cheaper) would give you a bearing of about 115mm might be ok if not much weight on top, but you have a fair amount of brickwork.

 

[da3533]

Currently there are x2 7x3 inch timber supporting this 3m x1 m high walll…. This should be ok? No? Wood lintel is good? Is it compliant by regs? Or is it just steel and concrete