Dual Stringers

Description

Configurable off the shelf in 1 to 17 treads in a continuous pair, Dual Stringers can cover up to
3150mm in vertical height.

Suitable for interior or exterior applications, Dual Stringers are robust and weather resistant, hot-dip galvanised for maximum corrosion resistance.

Features

Designed with walking comfort in mind, Dual Stringers have an incline angle of 35 degrees with steps placed at a consistent 175mm rise allowing for a ‘going’ distance of 250mm.

    • Simple to configure design.
    • Easy to install via concrete cast-in or optional bolt-down bracket available.
    • Hot-dip galvanised to AS/NZS 4680:2006.
    • Designed to take a maximum tread width of 1000mm.
    • Rectangular Hollow Sections (RHS) of up to 5mm thickness.
    • Complies with the National Construction Code^ when a minimum tread height of 50mm is used.
    • Complies with AS1657:2018, engineered to the requirements of AS1170.1:2002 (up to a UDL of 4.0kPa and a point load of 4.5kN).

^ Dual Stringers comply with the requirements of the National Construction Code Volume 2 for Class 1 and 10 buildings Part 3.9.1 when installed with treads at least 50mm thick. The minimum 50mm thick tread is to meet the dimensional requirements of Figure 3.9.1.4 to prevent a 125mm sphere from passing between the treads.

Configuring Dual Stringers

To calculate the number of treads required simply:

1. Measure the vertical height from the ground to the finished floor level of the landing.

2. Divide the height by the rise of each tread (175mm)

3. Round the result to the nearest whole number, then reduce by one for the top landing. The result is the number of treads required.

For Example:

Height = 1000mm divided by 175mm = 5.71.

Rounded up to 6, then reduced by 1 = 5 tread configuration required.

Dual Stringer
Product Code
Number
of Treads
Vertical Height#
(mm)
Horizontal Distance#
(mm)
RHS Thickness
(mm)
Weight Per
Pair (kg)
G1TS
G2TS
G3TS
G4TS
G5TS
G6TS
G7TS
G8TS
G9TS
G10TS
G11TS
G12TS
G13TS
G14TS
G15TS
G16TS
G17TS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
350
525
700
875
1050
1225
1400
1575
1750
1925
2100
2275
2450
2625
2800
2975
3150
240
490
740
990
1240
1490
1740
1990
2240
2490
2740
2990
3240
3490
3740
3990
4240
3
3
3
3
3
3
3
3
3
3
3
3
5
5
5
5
5
8
14
19
24
30
35
41
46
51
57
62
67
105
113
120
128
136

# Measurement is for stringer only and does not include the vertical or horizontal dimension of the added step tread.

Additional Parts

Dual Stringers are supplied as pairs with tread mounting brackets. Additional parts are available on request. Fixings not included.

Tread Mount Bracket

Product Code: GTMB
Pack Size: Each
Item Weight: 0.42kg
L: 200mm, W: 57mm, H: 71mm

Bolt-Down Bracket

Product Code GBDB
Pack Size: Each
Item Weight: 0.27kg
L: 90mm, W: 55mm, H: 80mm

Steel Stair Treads

Product Code GTNS655-MK2
Pack Size: Each
Item Weight: 9.5kg
L: 1000mm, W: 260mm, H: 50mm

Contact Galintel

Got a question about Dual Stringers? Get in contact with us using the form below