Roof hatch RHT1015 and scissor stair XL

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Combination: roof hatch type RHT1015 and scissor stair type XL

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Specifications

CE ETA-15/0338

KOMO:SKG.0372.0503

Aboma certified according to EN-ISO 14122-3 for access to Lift Engine Rooms

TÜV NORD certified according to EN 14975:2010, with label ''Baumuster geprüft"

 

Roof hatch, type RHT1015
Standard opening size: 1000 x 1500 mm
Weight: 65 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
  • Fully opened lid engages automatically, with release button
  • Diagonal hand rail to safely enter and leave roof hatch
  • Cylinder lock (31 x 70 mm) with 3 keys, in- and outside operation, with 1 point lock

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

  • Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²
  • Insulating (EN-ISO10077-2): Uw ≤ 0.32 W/(m².K)

  • 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 XL
Casing:

  • For structural opening size (W x L x H) 1000 x 1300 x 250 mm 
  • With sealing all around

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

Stair:

  • Material: cast aluminium
  • Size steps: 480 x 140 x 26 mm, anti-skid
  • Distance between steps: ca.  250 mm depending on room height
  • Steps can be levelled horizontally 

Projection while opening:
600 mm (3000 mm room height)
850 mm (3200 mm room height)
Hardware:

  • Hook and eye
  • Stair guide control system
  • 2 x handrail, prepared for padlock, to secure retracted stairs


Extension of scissor stair in plenum (option):
The stair can de 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

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
  • 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. As a standard the system is supplied with a compact surface mount keypad for easy operation. The keypad connected with signal cable can be installed remote from control unit. On request the system can be supplied with wireless remote control.

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

 

Electrical operation for linking to a fire alarm systems

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 XL

plenum_2_stepsExtension of types Large, EI-60 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 and EI-60)
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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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 slope of 30°.

 

Access to lift machine rooms

The Gorter combination of roof hatch and type XL scissor stair was developed in part to reach higher lift machine rooms and utility rooms. The scissor stair is supplied with an Aboma certificate for access to (lift) machine rooms in accordance with EN-ISO 14122-3. The wide stair treads (480 mm) and larger roof hatch with an opening of 1,000 x 1,500 mm simplify taking materials to upper areas/roof.

 

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 of Uw ≤ 0.319 W/(m².K) This minimises the chance of condensation forming and guarantees energy cost savings.

 

Gorter RHT roof hatch with XL scissor stair for, among others, lift and machine rooms:

  • Roof hatch is CE (ETA-15/338), TÜV NORD, Aboma and KOMO® certified, with fully thermally broken curb and cover
  • Scissor stair with Aboma certificate for access to (lift) machine rooms (EN-ISO 14122-3)
  • 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 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 type XL 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