72"D Galvanized Steel Code Compliant Spiral Stair Kit - 85"H - 152"H
In stock
From $8,561.30
To $14,740.00
The Galvanized exterior spiral stair line is created by manufacturing the spiral staircase out of carbon steel. Then, to prepare the galvanized steel staircase for exterior use, it goes through a "hot-dipped galvanizing process", which involves numerous steps to prepare the parts to be dipped into a vat of hot zinc. The zinc coats every inch of the staircase to form a protective barrier against the elements. This process creates a maintenance free barrier to prevent the galvanized steel staircase from rusting making it a great outdoor choice.
This code compliant steel spiral staircase kit is designed to comply with Universal Building Code (UBC), International Fire Code (IFC), Building Officials Code Administrators International (BOCA) and International Residential Code (IRC). Always check with you local code enforcement officer for local code requirements.
Finish:
The hot-dipped galvanizing process ends up with an industrial gray finish, that some customers are looking for, which actually bonds the steel to the zinc alloy. You can paint the galvanizing at your home if you properly prepare the surface and use the correct paint. The hot-dip galvanizing process uses a multi step process to prepare the steel and these particular metal spiral stairs are done with a very high quality of care. A hot alkali solution is used, then a dilute acid solution, and finally dipped in flux or a heated bath of Zinc Ammonium chloride solution which ensures that all the rust, paint, oil, etc is completely removed. All those cleaning steps ensure that a proper bond can occur between the steel and zinc alloy dipping process which chemically bond the zinc protection to the steel. Finally, each individual piece is hand checked for quality and to ensure no sharp edges are left from the galvanizing dip
Standard Features:
- Hidden weld and hardware design visually maintains sharp, crips lines for an overall finished look.
- Open tread ends
- 1" Round aluminum balusters
- Baluster pockets - which allows the baluster to mount inside the tread corner
- Diamond pattern tread covering provides a non-slip surface while providing architectural styling.
The Galvanized code compliant spiral staircase kit includes:
- Hot-dipped galvanized finish(industrial gray)
- Center column, base plate and top cap
- 1" outside diameter round balusters (1 per tread)
- Center balusters to reduce spacing to less than 4" between balusters
- 1-1/2" outside diameter aluminum handrail
- Platform railing - 1" x 1" frame with 1" round balusters, platform (square)
- 40" tall column extension
Height Range | Num Rises/Treads | Degree of Rotation | Minimum Finished Opening Size | Platform Size | Clear Walking Path |
85" - 95" | 10 / 9 | 270° | 74" x 74" | 37" x 37" | 26" |
93" - 104" | 11 / 10 | 300° | 74" x 74" | 37" x 37" | 26" |
101" - 114" | 12 / 11 | 330° | 74" x 74" | 37" x 37" | 26" |
110" - 123" | 13 / 12 | 360° | 74" x 74" | 37" x 37" | 26" |
119" - 133" | 14 / 13 | 390° | 74" x 74" | 37" x 37" | 26" |
127" - 142" | 15 / 14 | 420° | 74" x 74" | 37" x 37" | 26" |
136" - 152" | 16 / 15 | 450° | 74" x 74" | 37" x 37" | 26" |
Weight(LBS) | 0.000000 |
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