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As it looks to be part of a side extension, the planning permission for the extension could have a condition such as 'garage space not to be used other than for parking a car' or some such wording. But in the real world, its unlikely that the council would do anything, even if they got to find...

If its a standard box lintel (possibly Catnic?) it will be in their catalogue, giving the maximum load-bearing capacity for any given span. Its actually quite easy to work out the loads - your beam will be carrying part of the floor load, and possibly a wall above. There are standard tables with...

Is it a patented 'box' lintel, or a steel 'I' beam?

So it seems it is intended as a way of saving the planet? More NetZero b******* then?

Is it just me or has anyone noticed that more and more motorway lights seem to be off at night. I regularly drive up and down the M61 and M6 between South Lancashire and Glasgow. Granted most rural motorways are unlit but where complex junctions are situated, or when coming into urban areas, the...

It depends largely on the strength of the mortar, and also the care which has been taken to make the opening. Modern cement mortar can have good adhesion to the brick and may well hold up the triangle of brickwork across the opening. Older, lime mortars are not so reliable in this respect. It's...

Sacrilege.

You've hit the nail on the head here. On completion, Building Control are now sending out forms for the Principal Designer to confirm that the work complies with Building Regulations. It raises the question as what exactly is Building Control's job? In getting an architect or other professional...

As cbde says, 152 x 152 x 23 would be more than adequate. Dont forget a thin (3mm) steel plate spanning from the top of the beam into a joint in the party wall. just to stop any lose bricks in the wythes from dropping down.

If it is a shallow arch, it suggests that it was originally part of an opening in the rear wall, eg a door and adjoining narrow window? Can you not leave the arch as it is? - they are intended to be self-supporting. If you really feel you want to support it, a steel rectangular hollow section...

Those steels will probably last until the Four Horsemen come riding in...

Have a look at this: https://link.springer.com/article/10.1617/s11527-020-01536-2 It's Italian research done about 5 years ago (in English) into direct pull-out tests of resin-fixed bolts into brickwork of various types (resin-fixed are far better that plastic-plugged screws). I've used this...

Woody is correct. Timber under long-term load is subject to 'creep', whereby the timber keeps its deflected shape. If you try to jack it straight, it might lift the rafters at the end. As it's not showing externally. just reinforce it as it is by any convenient method, adding extra timber or...

If the joists are firmly supported off the bottom flange of the beam, or securely fixed to the web some way, the reason they have sheared is because the joists have shrunk. When they were installed, they will have had a relatively high moisture content, perhaps being stored uinder cover but...

The purlin prop won't affect your new lintel; any load will just go down vertically against the new door jamb.

Its survived the Luftwaffe in 1940, Dunkirk and D-Day. The atomic bomb over Japan didn't shift it, and it survived the Suez Crisis and the later Cuban Missile crisis, not to mention JFK's assasination. The £-in-your pocket devaluation of 1967 had no effect, nor did the Winter of Discontent. It...

Whether or not its a serious issue depends on a) the depth of the cut; b) the depth of the joist and c) the span of the joists. Can't really tell much of that from the pic. Usually a notch near the end of the span is not as critical as one nearer the centre of the span.

A good beam would be a 152 x 152 x 23, with 6mm plate welded underneath. If supporting 3 courses of dense block cavity wall (and no load from the roof), the deflection would be around 3mm. If there are 2 or 3 block courses above, put a couple of 30 x 5 steel straps built into the inner skin and...

Yes, I think even replacing non-permeable with alternative non-permeable would still need P.P. (which of couse you probably wouldn't get). :<(

A quick way to find the size of a new pier is to work out the horizontal wind load on a portion of the wall and assume the wind is trying to push it over. Then, assume that all the wind load is to be resisted by the pier alone, and then work out the weight of pier required to more than...