Brick Strength & Padstones

[HammieUK]

I've just had some calculations through from a structural engineer for steels for a loft conversion, which says that no padstones are required assuming the existing bricks have a minimum compressive strength of 20MPa (N/mm^2). The bricks are standard solid red bricks, house built around 1930, what are the odds they'll be strong enough? Or should I get padstones/bearing plates put in just to be sure?

I'd ask my structural engineer but she takes a week to respond to any of my questions! Shouldn't complain too much I suppose, I'm paying her about a pittance for the job

 

[tkmax]

I'd put padstones or spreader plates in to be on the safe side, I'd never rely on the strength of any one non-engineered brick.

 

[noseall]

Put the steel straight onto the brick.

In the event that someone decides that pads are needed, wind an acro prop under and replace existing brick with a padstone.

 

[jeds]

20N isn't a lot. Old red imperial bricks tend to be as hard as nails - probably 50N+. I'd probably use a padstone though, if it were me. Especially if it's easy to fit.