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Half-Turn Staircase Layout

Half-Turn Twin-Stringer Steel Staircase with Oak Treads

Two parallel steel-supported flights reverse direction across one half-height landing. Compare three floor rises, the 18-rise layout and open oak treads, with the U-plan, landing and supporting connections coordinated as one staircase package.

Stair construction: Two parallel steel-side-stringer flights with open oak treads and half-turn landing
Floor-to-floor rise: 3000 mm floor rise · 18 rises · approximately 166.7 mm each
Oak treads: 16 separate treads; each 900 W × 260 going × 40 T mm

Floor-to-floor rise 3000 mm rise

3000 mm rise 2800 mm rise 3200 mm rise

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Twin Side Stringers, Open Oak Treads and a Return Landing

Two Steel Side Stringers per Flight

Each straight flight carries its treads between two carbon-steel side plates. The steel finish, tread brackets and connections remain tied to the engineered staircase assembly.

Sixteen Open Oak Treads

Eight separate treads form each flight, giving sixteen individual 900 W × 260 going × 40 T mm oak treads. The open-riser arrangement and exposed wood edges remain part of the selected staircase appearance.

Half-Height Landing and Guard Package

A 2000 × 1000 mm rear landing joins the two flights through a 180° turn. The package coordinates its oak landing surface, steel support, vertical-bar guards and oak handrails with both flights and floor arrivals.

Upper steel side stringers, oak open treads and their upper landing connection.

Three Floor Rises with One 18-Rise Layout

Three eighteen-rise alternatives with half-height landings at 1400, 1500 or 1600 mm.

3000 mm Main Floor Rise

The main layout divides 3000 mm into eighteen equal rises, about 166.7 mm each. Nine rises reach the 1500 mm landing; the next nine reach the upper floor.

2800 mm Floor Rise

The lower-rise configuration retains eighteen rises, about 155.6 mm each, and places the landing at 1400 mm. The tread widths, 260 mm goings and half-turn plan remain the same design basis.

3200 mm Floor Rise

The higher-rise configuration uses eighteen rises, about 177.8 mm each, with the landing at 1600 mm. Floor/head connections and the guard geometry follow that complete elevation.

Half-Turn Staircase Configuration Dimensions

Stair construction	Two parallel steel-side-stringer flights with open oak treads and half-turn landing
Floor-to-floor rise	3000 mm floor rise · 18 rises · approximately 166.7 mm each
Default rise and landing	3000/18 mm exact rise basis; nine rises to the 1500 mm landing
Oak treads	16 separate treads; each 900 W × 260 going × 40 T mm
Flight run and landing	Eight 260 mm goings per flight = 2080 mm run; landing 2000 × 1000 mm
Plan module	2000 W × 3080 L mm; 200 mm central well between tread-width zones
Engineering and guards	Side plates, brackets, beams, anchors, guard dimensions and handrails coordinated with actual opening
Supply unit	Two-flight stair set with four side stringers, 16 treads, landing, guard/handrail and engineered connection schedule

2000 × 3080 mm U-plan, opposite flight directions, 1500 mm default landing and eighteen equal rises across 3000 mm.

U-Plan Opening, Headroom and Structural Connections

Set the Two Opposite Flight Directions

The lower flight rises away from the entrance toward the rear landing. The upper flight returns in the opposite plan direction toward the upper arrival, with a 200 mm central well between the 900 mm tread-width zones.

Coordinate Opening and Headroom

Each flight has eight 260 mm goings, giving a 2080 mm plan run. Adding the 1000 mm landing depth forms a 3080 mm plan module; the structural opening detail adds supports, projecting fixings, guard space and the required clear passage/headroom.

Engineer the Complete Support and Guard Assembly

The structural schedule sets side-plate sections, brackets, landing beams, floor anchors and head connections against the actual building. Guard/handrail dimensions, fixing access and installation sequence are coordinated with that same stair opening.

Half-Turn Steel Staircase Supply Schedule

Floor Rise and Staircase Quantity

Quote the 2800, 3000 or 3200 mm floor rise with the eighteen-rise layout. Opening references retain the U-plan, landing elevation and number of staircase sets.

Steel Side Plates and Landing Structure

List four side stringers, tread supports, landing steelwork and the engineered connection package. Finish references, site interfaces and fabrication/assembly responsibilities stay with those structural components.

Oak Treads, Landing and Guard Components

Schedule sixteen oak treads, the landing surface, vertical steel bars, posts and oak handrails. Wood finish, nosing/edge details and the full guard layout remain tied to the assembled stair.

Piece Labels and Site Delivery

Label flight, tread, landing and guard parts by opening and assembly position. Protection, actual piece weights, receiving/lifting access and the installation sequence follow the delivery schedule.

Half-Turn Staircase Order Configuration

Geometry: Floor rise, 18-rise layout, U-plan, landing and opening reference
Steelwork: Side stringers, tread supports, landing beams, finish and connections
Oak and guards: Treads, landing surface, posts/bars, handrails and wood finish
Site delivery: Piece labels/weights, lifting access, assembly and destination

Twin-Stringer Half-Turn Staircase Questions

How do the two flights form a half turn?

The lower flight rises toward the rear landing. The upper parallel flight leaves that landing in the opposite direction, returning toward the upper arrival through a 180° change in route.

Which floor rises can be chosen?

Choose 2800, 3000 or 3200 mm floor-to-floor rise. All three use eighteen equal rises, giving approximately 155.6, 166.7 or 177.8 mm per rise respectively.

How many individual treads are in the layout?

Each flight uses eight individual oak treads before the landing or upper floor, giving sixteen treads in total. Nine rises per flight include the rise onto that landing or floor.

What are the tread and landing dimensions?

The oak treads are 900 mm wide, have 260 mm goings and are 40 mm thick. The rear landing is 2000 × 1000 mm, with eight goings giving a 2080 mm plan run per flight.

How is the staircase matched to the building?

The opening/structural detail coordinates floor levels, plan space, headroom, clear passage and supporting construction. It defines the steel sections, landing beams, anchors, head connections and complete guard arrangement.

What information belongs in a staircase quotation?

Include floor-to-floor levels, opening/floor sections, the chosen rise and room plan. Add tread/steel finishes, support and guard requirements, installation sequence, actual-piece handling, access and destination.

Request a Half-Turn Steel Staircase Quote

Complete half-turn U-shaped staircase with two parallel flights at opposite slopes, oak open treads, dark steel side stringers, a rear half-height landing and an upper arrival platform.

Half-Turn Twin-Stringer Steel Staircase with Oak Treads3000 mm rise

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Half-Turn Twin-Stringer Steel Staircase with Oak TreadsRequest a Quote