Top of brick pier wobbly

[JohnD]

Polio was popular 80 uears ago too

quite the reverse.

There was a bricklaying technique called "shelter bond" where vertical steel rods were placed before building the wall in ordinary frogged bricks, so that they would run in the mortar joints, due to shortage of reinforced concrete materials.

 

[^woody^]

quite the reverse.

There was a bricklaying technique called "shelter bond" where vertical steel rods were placed before building the wall in ordinary frogged bricks, so that they would run in the mortar joints, due to shortage of reinforced concrete materials.

Never heard of it.

How do you get reinforcement into frogs - which are soild? If you mean perforations then that is a very recent thing and reinforcement would not be required, as methods of construction changed when perforations came about.

 

[JohnD]

This is just an example of reinforced brickwork. Popular once but no longer seen. There is an Earthquake bond as well, not used on this country.

I couldn't find a diagram of Shelter Bond. It was used for brick-built surface air-raid shelters that your grandad will have seen outside schools and factories. Somewhat surprisingly, when tested, this reinforced brickwork withstood nearby explosions well. In one case a shelter bounced into the air slightly and fell back in one piece trapping the welt of a boy's shoe (but not his foot).

As well as the vertical rods sprouting from the ground, the bricklayers also laid rods in the horizontal mortar beds.

the rods didn't go into the frogs.

I mentioned frogged bricks as opposed to perforated bricks used by the methodists.

the vertical rods were bent over at the top once the wall was finished to go into the subsequently-poured RC roof and prevent it detaching from the walls.

 

[^woody^]

This is just an example of reinforced brickwork

That's an example of English Bond by the looks of it, and you wont get any vertical reinforcement in that. Its arguable whether that bond needs any reinforcing anyway as it's so strong, but it could have horizontal bed reinforcement for specific risks (like blasts), but that wont help the OP