sommier de répartition

23:05 Mar 20, 2020 

"An exception to the use of the term plate for a large, load-bearing timber in a wall is the bressummer, a timber supporting a wall over a wall opening (see also: lintel)."
https://en.wikipedia.org/wiki/Wall_plate

Also, the term "plate" has no binding connotation to "steel plate"...or any other metal... :)

14:44 Mar 19, 2020 

See https://en.wikipedia.org/wiki/Bressummer for perfect clarification of this term (with thanks to the omniscient Alex G). He also suggests "bearing pad" or "concrete bearing pad", eg "Armtec's Bin-Wall bridge abutment is a crib-type abutment
with a compacted granular material and a CONCRETE BEARING PAD to support the bridge super-structure and traffic loadings..."

09:36 Mar 16, 2020 

Load spreader?

16:09 Mar 15, 2020 

https://theconstructor.org/structural-engg/shear-key-constru...

Some would say load bearing plate, some time ago there was question in Norwegian, beton, term Shear Key, which in concrete is not automotive term, ....to support a bearin weight wall, a steel plate with feet, etc is imbedded in concrete, idea is to distribute the weight throgh the attacements, rods, (But as pointed out by others, the exact term is......?)

13:16 Mar 15, 2020 

http://www.leplancherpoutrelleshourdispourlesnuls.com/faq/da...

quite close to the situation described in the ST.

L'entreprise de charpente/couverture a omis de réaliser ou de faire réaliser des sommiers de répartition béton armé sous les poutres bois mises en place par ses soins
=
all the weight of the roof is pressing on just few bricks (creating te risk that these bricks or the whole wall could be damaged) instead of the weight of the roof being spread on a bigger contact surface by using "sommiers de répartition béton armé"