Hello,

I wish to install a couple of windows (approx. 90cm. wide)into a single-thickness brick wall of a garage, which I want to convert into a store-room/workshop.

The garage is typical 60s design on semis: Flat roof, too small for a car.

The windows I'm thinking would be of a size that would leave only 3 courses above to the top of the wall. So I am surmising that the easiest would be to support the roof joists, remove the three courses and install a simple lintel.

But which type of lintel? I'm not an expert but it seems that this is a low-load situation and therefore a fairly minimal lintel should suffice. I have seen LA types listed. Is there a simple way to calculate or estimate the spec. needed?

Thanks for any advice.

Chris

wrote in message
...
Hello,

I wish to install a couple of windows (approx. 90cm. wide)into a
single-thickness brick wall of a garage, which I want to convert into a
store-room/workshop.

The garage is typical 60s design on semis: Flat roof, too small for a car.

The windows I'm thinking would be of a size that would leave only 3
courses above to the top of the wall. So I am surmising that the easiest
would be to support the roof joists, remove the three courses and install
a simple lintel.

But which type of lintel? I'm not an expert but it seems that this is a
low-load situation and therefore a fairly minimal lintel should suffice. I
have seen LA types listed. Is there a simple way to calculate or estimate
the spec. needed?

Thanks for any advice.


Lintel needs to be 1.2m long.
For a 4.5" wall:
Either a pre-stressed concrete lintel 100mm wide or a steel box lintel for
about 4 times the price.

For a 9 " wall, as above x 2

mark

On Thursday, June 27, 2013 4:44:38 PM UTC+1, wrote:

Hello,
I wish to install a couple of windows (approx. 90cm. wide)into a single-thickness brick wall of a garage, which I want to convert into a store-room/workshop.
The garage is typical 60s design on semis: Flat roof, too small for a car.
The windows I'm thinking would be of a size that would leave only 3 courses above to the top of the wall. So I am surmising that the easiest would be to support the roof joists, remove the three courses and install a simple lintel.
But which type of lintel? I'm not an expert but it seems that this is a low-load situation and therefore a fairly minimal lintel should suffice. I have seen LA types listed. Is there a simple way to calculate or estimate the spec. needed?
Thanks for any advice.
Chris

A simple wood lintel should be more than adequate in this case. Or if the roof doesnt need the support, just a strip of pvc that looks like a lintel.


NT

wrote:
Hello,

I wish to install a couple of windows (approx. 90cm. wide)into a
single-thickness brick wall of a garage, which I want to convert into
a store-room/workshop.

The garage is typical 60s design on semis: Flat roof, too small for a
car.

The windows I'm thinking would be of a size that would leave only 3
courses above to the top of the wall. So I am surmising that the
easiest would be to support the roof joists, remove the three courses
and install a simple lintel.

But which type of lintel? I'm not an expert but it seems that this is
a low-load situation and therefore a fairly minimal lintel should
suffice. I have seen LA types listed. Is there a simple way to
calculate or estimate the spec. needed?

Thanks for any advice.

Chris

Just use the pre stressed concrete lintels available at the sheds, anything
metal is probably going to cost a lot more and are not worth the money, nor
are they any better in this situation.
Keep 2 of the courses of brick for going back in - the concrete lintel will
only occupy one course, and have the lintel sat on about 100mm (half a
brick) at each side