Beam the stringer can be bolted or welded.
Steel stringer beam staircase details.
The stringers are notched so that the risers and treads fit into them.
If attached to a dog leg the stringer will be welded.
Alternately both stringers can be supported with the same supporting beam.
Stringer can vary in section 1 8 1 12 1 1 2 1 8.
Supporting beam the supporting beam supports the stringer or the dog leg if it exists.
They must be field welded with 1 8 welds similar to detail welds below.
Center square beam 100 200 6 100 150 5mm.
Stringer or string the structural member that supports the treads.
Stringer to steel platform or embedded steel at floor level landings.
A rail fixed parallel above the pitch line at the sides of a stair.
Though the treads may be supported many other ways.
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Depending upon the span larger i beams can be used to increase strength.
This i beam single stringer stair is a simple and semi industrial looking staircase.
There are typically two stringers one on either side of the stairs.