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