Roof hatch RHT7014 and scissor stair Large

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Combination: roof hatch type RHT7014 and scissor stair type Large

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Specifications

Roof hatch, type RHT7014

Standard opening size: 700 x 1400 mm (Hinge side = long side)
Weight: 52 kg

 

Gorter® - completely assembled with:

  • Thermal separated and insulated aluminium construction
  • Counter balancing system for assisted opening and controlled closing
  • Diagonal hand rail to safely enter and leave roof hatch
  • Double sealing for water and weather tightness
  • Fully opened lid engages automatically, with release button
  • Cylinder lock (31 x 70 mm) with 3 keys, in- and outside operation, with 1 point lock

 

CodeMark certified for Australia & New Zealand

  • Australia CM70087, New Zealand CM70088

 

Performance according to CE (ETA-15/0338):

  • Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²
  • Sound reduction (EN-ISO140-3): 26 dB
  • Watertightness (EN 12208): Class E 650
  • Resistance to wind load (EN 12210): Class E 3000
  • Resistance to snow loads (EN 1991-1-3): 3.97kN/m²
  • Impact hard body (EN 356): Class P5A
  • Impact soft body (EN 13049): Class 5
  • Air permeability (EN 12207): Class 3

 

Standard powder coating:

Powder coated in RAL7047 (outside) and RAL9010 (inside).


Scissor stair, type Large
Casing:

  • For structural opening size (w x L x H): 700 x 1200 x 250 mm

 

Ceiling height: ........ mm, standard 3000 mm.
to be specified from top of floor to bottom of cover.
Option: up to 3500 mm (type Large-H)

 

Stair:

  • Material: cast aluminium
  • Size steps: 350 x 140 x 26 mm, anti-skid
  • Step distance: ca. 250 mm, depending on ceiling height
  • Horizontal position of steps is adjustable

 

Projection while opening:

Max. 700 mm at ceiling height 3000 mm (type Large)
Max. 950 mm at ceiling height 3500 mm (type Large-H)

 

Hardware:

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


Extension of scissor stair in plenum (option):
The stair can be extended to bridge the distance between ceiling and roof hatch in cases where it is mounted in a suspended ceiling / plenum

Options

Gorter® Electrical Operation of Roof Hatches and Floor Doors

Gorter® Electrical Operation of Roof Hatches and Floor Doors

Standard Electrical operation - GT35

electrical operation gt35The Gorter GT35 electrical operation is a solution, which can be fitted on any standard Gorter RHT roof hatch or floor door of the type WA, WAPT and OP. The two powerful electric motors are always fitted as a pair on both sides of the lid. The motors are pre-fitted from the factory or can be fitted afterwards on any standard RHT roof hatch from model year 2012 and later.

 

Suitable for

  • Roof hatches type RHT standard
  • Hinged Floor doors type WA (flush), WAPT and OP

 

Operation and control 230Vac

The Gorter GT35 is a system with two motors and a control unit. The system comes standard with a wireless remote control and a compact control panel. The keypad connected with signal cable can be installed remote from control unit.

Dimensions:

Control unit: 265 x 105 x 40 mm

Keypad: +/- 70 x 50 x 10 mm

Length of signal/power cable motors: 2 m

Electrical installation:

The drives and the wiring must be installed by a certified installer

 

Operation for a hatch with double lids

electrical_operation

Depending on the access door type, the weight of the cover and the application, we can install one or more gear rack drives. These drives are available in 24 Vdc or 230 Vac.
Operation and control 230Vac

This is the simplest system with 1 motor. It can be operated with an integrated or surface-mounted switch, not included.
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, possibly combined with emergency switch
  • 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.
Electrical installation:

The drives and the wiring must be installed by a certified installer.

Extension Scissor Stairs - Attic Ladder - Type Large

Extension Scissor Stairs - Attic Ladder - Type Large

plenum_2_stepsExtension of types Large and XL

 

Safety Approval Report(EN-ISO 14122-3) available

Height: ........mm
to be specified from ceiling to roof hatch flange or roof deck.
Stairs:
Material: aluminium
Steps are anti-skid
Size steps: 360 x 140 x 26 mm (types Large)
Size steps: 480 x 140 x 26 mm (type XL)
Steps can be horizontally adjusted

Hardware:
Brackets

More information? Please click Products > Ladders and stairs > Extension of scissor stairs - attic ladder



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Maximum dimensions: 6000 x 7000 mm

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Gorter roof hatches with scissor stairs provide practical and safe access to flat roofs for maintenance work or other purposes. The roof hatch can be installed on flat roofs with a maximum pitch of 30°.

 

Access to the roof

The Gorter combination of roof hatch and Large scissor stair provides generous access to the roof and is available for ceiling heights of max. 3,000 or 3,500 mm. The roof hatch has an opening of 700 x 1,400 mm.

 

Large type: max. ceiling height 3,000 mm

Large H type: max. ceiling height 3,500 mm

 

Scissor stair ensures free space under the roof hatch

Roof hatches combined with a scissor stair are ideal for applications where occasional but also frequent access to the roof is required. When the scissor stair is folded, you always have free space under the hatch.

 

Fully thermally broken

The Gorter RHT roof hatch has a fully thermally broken curb and cover, and a proven high insulation value. This minimises the chance of condensation forming and guarantees energy cost savings.

 

Gorter RHT roof hatch with Large scissor stair:

  • Roof hatch with with fully thermally broken curb and cover
  • Roof hatch safe operation with one hand
  • Safe grip all the way to the roof

  • 10-year warranty on the roof hatch, 1 year on climbing devices

  • Roof hatch and scissor stair with optional electric control
  • High-quality aluminium construction of roof hatch and scissor stair
  • Euro cylinder lock with indoor and outdoor operation
  • Burglar- and sound-proof roof hatch
  • Fast delivery

 

Scissor stair extension for plenum

The Large and Large H scissor stair can be used with an extension of scissor stair to bridge a plenum (= space between suspended ceiling and roof).

 

Read more about the advantages of Gorter roof hatches here

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