In article , Imm wrote:
In the USA it is common to support brick walls with TJIs.

It's a fundamentally unsound idea. TJI beams have got next to no
lateral stability. This is not a problem with floors because the
diaphragm effect of the floor deck keeps them straight and upright.
If you put a beam under a wall where does the lateral support come
from? In addition the OP wants to take out a wall at ground floor
level and support the wall over with a beam taking ? 2-3 tons which
means that at either end there will be an upward reaction of one ton
or more on the bottom flange of the beam. There's no way any
checking engineer would let you do this on a ply web beam without
designed stiffeners.

If you can direct us to some span/load tables we might just see what
would be needed.

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Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk
Free SEDBUK boiler database browser http://www.sda.co.uk/qsedbuk.htm