Stair Flights

Stair flights

Stair flights are a solid structural element containing multiple steps and or entry, midspan or exit landings. they are manufactured with concrete and reinforcing steel inside mould forms, they are structurally sound with excellent fire resistance properties, Concrete stair flights are commonly used in fire egress stairwells and heavy traffic flow locations

When designing Stair flights dimensions are critical to ensure level surface transitions both onto and off the stairs to prevent trip hazards.  As every building is designed to unique shape and size, so to stairs also need to scale to meet the requirements of the building.

Antislip nosings are specified by designers for application following installation by others.

Nauhria maintain common stair flight moulds that may be suitable for your buildings needs, it may be possible to modify some dimensions to accommodate width and step numbers however tread goings, taper depth and riser heights are fixed within the mould form.

requirements outside of these parameters will require moulds to be manufactured.

Common N-Flight Moulds:

N-Flight 001

Reference	Dimension
Total Unit Length:	8777 mm
Total Unit Height:	2677 mm
Lower Landing Width:	900 to 1580 mm
Lower Landing Going Length:	500 to 1300 mm
Lower Landing Thickness:	150 to 200 mm
Upper Landing Going Length:	500 – 1798 mm
Upper Landing Width:	900 to 1580 mm
Upper Landing Thickness:	150 to 200 mm
Step Width:	900 to 1580 mm
Step Riser Height:Going Length:	175 mm
Riser Tapper Depth	25 mm
Step Going Length	310 mm
Total Riser Height	2520 mm
Throat thickness	150 to 200 mm
Total No. Of Risers	13 Nos.

Click image to download PDF Sheet.

N-Flight 002

Reference	Dimension
Total Unit Length:	8777 mm
Total Unit Height:	2677 mm
Lower Landing Width:	900 to 1540 mm
Lower Landing Going Length:	500 to 3169 mm
Lower Landing Thickness:	150 to 225 mm
Upper Landing Going Length:	500 – 1798 mm
Upper Landing Width:	900 to 1540 mm
Upper Landing Thickness:	150 to 225 mm
Step Width:	900 to 1540 mm
Step Riser Height:Going Length:	180 mm
Riser Tapper Depth	25 mm
Step Going Length	285 mm
Total Riser Height	2520 mm
Throat thickness	150 to 225 mm
Total No. Of Risers	14 Nos.

Click image below to open PDF

N-Flight 003

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Reference	Dimension
Total Unit Length:	6292 mm
Total Unit Height:	2974 mm
Mid Landing Going Length:	1516 mm
Mid Landing Thickness:	150 to 200mm
Upper Landing Going Length:	600 mm
Upper Landing Width:	1000 to 1200 mm
Step Width:	1000 to 1200 mm
Step Riser Height:	176.5 mm
Riser Taper Depth:	25 mm
Step Going Length:	280 mm
Total Riser Height (A):	1057 mm
Throat Thickness (A):	150 to 250 mm
Total Riser Height (B):	1762 mm
Throat Thickness (B):	150 to 250 mm
Total No. Of Risers (A):	7 Nos.
Total No. Of Risers (B):	10 Nos.

Click image below to open PDF