"tom patton" wrote in message
. uk...
The architect just specified making holes in the existing flat roof and
connecting via the joists to a made up base as you indicate.
Building control asked for an enginners report on the connection method
lo
and behold the Kerto beam design appeared.
Does this mean wherever I see the term--spiked it usually means a
predrilled
at factory connection system.


Check with building control exactly what he will be happy with. Mostly
things like that are strapped down with steel strapping down the walls
below. (So the whole lot can't blow off in one lump.)

mrcheerful