Brickwork Cracks above lintels

stuart45 said:
My 9 year old grandson knows the answer to that one woody, as he plays Minecraft whenever he gets hold of his mum's tablet.
It's to do with the thrust from the Y axis on the X which transfers back to the Z rotating the Y back on the X and cracking the joints.
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Brilliant. I look forward to his paper on molecular cohesion in a future Higgs Boson Monthly.
 
Simon Thomas said:
Thoughts on these cracks, same lintels used on the whole estate. (circa 1970's) but not seen these cracks above other windows on same estate.
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Simon Thomas said:
(and common on the same estate)
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Is it common on the same estate or isn't it? The step cracks do look lintel related but how do you explain the staggered cracking at the end of the building?
 
With calcium silicate bricks there is a lot of shrinkage, compared to clay bricks which tend to expand. You normally find that the cracks appear either at the end of the wall or at a weak spot in the wall which is at the openings. If the mortar is weak enough the joints rather than the bricks will crack.
Nowadays movements joints are used more when this type of brick is used.
This is all guesswork as they may be clay bricks.
 
Woody you need to get out more. You are turning into an internet troll as you clearly have nothing positive to say. How many years have you spent in the building trade? Maybe you should stick to whittling spoons in your shed.

A quick google of Calcium Silicate bricks brings up a nice example image of the problem:
https://www.helifix.co.uk/uploads/images/case-studies/st_nicholas_road_oxford2.jpg

Clearly the issue is related to this type of brick and rotating boot lintels and quite possible overly strong mortar. All 3 factors contributing to the overall issue, and easily fixed.
 
Simon Thomas said:
Cracking IS related to lintels
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I'm back now. That was an experience out there.

Anyway, I popped into Ladbrokes and put a a tenner on it being the lintels at 720:1 based on the sure comments of everyone who doesn't '45' in their name. The bookie just laughed and said thanks. Does he know something, or where I can get these whittling spoons from, I wondered as I hurried back to the safety of home?
 
How old are you exactly woody? You contribute absolutely nothing constructive and act like a total bellend. No doubt you will have to reply with another stupid comment because your sad ego feels it has to have the last say.
I see you have been here since 2006, and it appears all you do is leave useless comments. Clearly you have been stuck in your room beating yourself off daily over the latest issue of DIY monthly and Trolling forums for the last 11 years. I know you will be here most the time, it's quite evident you have no life outside your room, and I certainly wont be back for any of your useless DIY tips.
 
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