Combination: roof hatch RHT7090 and scissor stair type Small

Specification

TÜV certified according to EN 14975, with label ''Baumuster geprüft"

Roof hatch, type RHT7090
Standard opening size: 700 x 900 mm
Weight: 33 kg
Gorter® - completely assembled with

Thermal separated and insulated aluminium construction
Counterbalancing system for assisted opening and controlled closing
Double sealing for water and weather tightness
Diagonal handrail to safely enter and leave roof hatch
Fully opened lid engages automatically, with release button
Cylinder lock (31 x 60 mm) with 3 keys, in and outside operation.

Performance:

Insulation value (EN-ISO10077-1/2): Rc = 3,2 (m².K)W; U = 0,31 W/(m².K)
Sound reduction (EN-ISO140-3): 27 dB
Wind and water tightness (EN1027/EN1873): 650 Pa
Construction strength (EN1026/EN1027): ± 3000 Pa
Air tightness (EN 1026): 0,5 m³/hm1
Snow load EN 1991-1/5): 200 kg/m²

Standard powder coating:

RAL 7047 (outside) and RAL 9010 (inside).

Scissor stair, type Small
Casing:

For structural opening size (W x L x H): 700 x 900 x 320 mm

Stair:

Material: cast aluminium
Size steps: 360 x 140 x 26 mm, anti-skid
Distance of steps 250 mm, depending on room height
Horizontal position of steps is adjustable

Room height: ........ mm (max. 3000 mm)
to be specified from top of floor to bottom of cover.
Projection while opening:
500 mm (3000 mm room height)
Hardware:

Hook and eye
Handrail prepared for padlock to secure retracted stairs against misuse
Stair guide control system

Options

Gorter® - Electrical Operation of Roof Hatches and Floor Doors

electrical_operation Depending on door type, cover weight and other requirements we can install one or more rack-and-pinion drives. These drives are available in 24 Vdc or 230 Vac
Operation and control 230Vac
This system is controlled with a surface mounted or built-in switch. Operation of two drives through one switch is possible.
Operation and control 24Vdc
Operation of one or more drives is controlled by a control box with rectifier that is connected to the electricity network.
Features

communication with central alarm system
emergency switch
certified for smoke vent system / fire resisting system
programmable
operation control of other objects
control by automatic detectors - smoke, rain, wind, fire etc.
automatic sequence control of two covers that are overlapping
automatic stop in case of unequal load or overload
etc.

Depending on the features we will recommend a suitable control box type.
Emergency hatches and doors:
It is of life importance that an emergency door opens after a break down of the electrical system. For those reasons a control box can be provided with a built-in emergency power pack.
If the emergency situation is very critical it advisable to apply doors that can be manually operated after a total break down of electrical network system and the emergency power pack.
Electrical installation:
Roof Hatches and Floor Doors will be supplied with drives installed together with required options as control box, switches, detectors, installation drawings and electrical diagrams. Electrical installation should be carried out by an electrical contractor.

Specification Gorter® Safety Railing

safety_railing Partition and marking of safe area on the roof
Components: