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GEOTEC® Smoke extraction and ventilation ducts

Smoke extraction and ventilation solutions

In the case of a fire in a building, fire, smoke, and heat are confined to the interior of the premises. The construction of a smoke and ventilation system is a crucial step in the control of a fire. This consists of sweeping the space to be cleared of smoke by a flow of air. This means an evacuation of smoke on one side (smoke extraction duct or high ventilation) and a supply of fresh air on the other (ventilation duct or low ventilation) allowing the rescue services to evacuate people and protect them.

Smoke extraction ducts will protect the premises through which a fire is passed throughout its path, while ventilation ducts will protect the interior volume of a duct from a fire, the usual expression for an “external fire”.

Learn more about passive fire protection. (Link)

GEOTEC® smoke extraction ducts and ventilation ducts

GEOTEC® Smoke and heat extraction ducts are made by juxtaposing 1000 mm long GEOTEC®S fire resistant boards of 30- or 45-mm thickness. These systems are available for fire ratings from EI 60 to EI 120: 1 to 2 hours fire resistance, according to EN 13501-3 and EN 13501-4.

All fire-resistant plates are moulded to standard dimensions with a rebate on all four sides for 45mm thick ducts and on two sides for 30mm thick ducts to facilitate assembly.

GEOTEC® fire ducts can also be made using GEOTEC®SX fire resistant sheets of 1000mm length and 1200mm width for 30mm or 45mm thicknesses. These single size sheets have no longitudinal rabbets for easy cutting and assembly.

System advantages

  • Assembly by screwing, stapling and using the “polochonnage” solution (mixture of sisal fibre and adhesive) possible
  • Light-weight materials
  • 100% natural gypsum-based products
  • CE certified
  • Ease of installation
  • Time saving
  • Compatible products including Rft products

System performances

GEOTEC® smoke extraction ducts

Tests in accordance with EN 1366-8 Board’s reference Thickness (mm) Fire resistance classification EI S i <-> o EFECTIS assessments Internal cross-sections (mm) Max ht System applied
Tests in accordance with EN 1366-8 Board’s reference Thickness (mm) Fire resistance classification EI S i <-> o EFECTIS assessments Internal cross-sections (mm) Max ht System applied
Horizontal and vertical smoke extraction GEOTEC® S or GEOTEC® SX 30 or 45 EI 60S or EI 120S PV n° EFR-16-002205 Rév.1 0x0 to 2500x2000 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) Polochonnage (mixture of sisal fibre and glue)
Horizontal and vertical smoke extraction GEOTEC® or GEOTEC® SX 30 or 45 EI 60S or EI 120S PV n°EFR-16-002203 Rév.1 0x0 to 2500x1500 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) Glue and Screw system

GEOTEC® ventilation ducts

Tests in accordance with EN 1366-1 Board’s reference Thickness (mm) Fire resistance classification EI S i <-> o EFECTIS assessments Internal cross-sections (mm) Max ht System applied
Tests in accordance with EN 1366-1 Board’s reference Thickness (mm) Fire resistance classification EI S i <-> o EFECTIS assessments Internal cross-sections (mm) Max ht System applied
Horizontal and vertical ventilation GEOTEC® S or GEOTEC® SX 30 or 45 EI 60S or EI 120S PV n° EFR-16-002204 Rév.1 0x0 to 2500x2000 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) Polochonnage (mixture of sisal fibre and glue)
Horizontal and vertical ventilation GEOTEC® S or GEOTEC® SX 30 or 45 EI 60S or EI 120S PV n° EFR-16-002202 Rév.1 0x0 to 2500x1500 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) Glue and Screw system

Associated products

Gypsum and fibreglass fire protective board for passive fire protection

GEOTEC® S30 boards

1 hr. fire protective board 30 mm thick and with dimensions from 200 to 1100 (W) x 1000 (L) mm (in steps of 50 mm).

Technical notice
Gypsum and fibreglass fire protective board for passive fire protection

GEOTEC® S45 boards

2-hr. fire protective board 45 mm thick and with dimensions from 200 to 1100 (W) x 1000 (L) mm (in steps of 50 mm).

Technical notice
Gypsum and fibreglass fire protective board for passive fire protection

GEOTEC® SX30 boards

1 hr. fire protective board, thickness 30 mm and unique dimension 1200 (W) x 1000 (L) mm.

Technical notice
Gypsum and fibreglass fire protective board for passive fire protection

GEOTEC® SX45 boards

2-hr. fire protective board 45 mm thick and unique dimension 1200 (W) x 1000 (L) mm for passive fire protection

Technical notice
Geostaff gypsum plaster fire protection accessory for passive fire protection

GEOTEC® A 1/2 Shells

Pre-moulded elements with a length of 1 ml and diameters of 90 or 130 mm (hxW) to protect the threaded rods.

Technical notice
U-plaster fire-resistant accessory for passive fire protection

GEOTEC® A U-plaster

Pre-moulded elements of variable dimensions for the protection of the metal supports of horizontal ducts.

Technical notice
Geocol adhesive Geostaff

GEOCOL® fireproof glue

Powder-coated glue, available in 25 kg bags, especially formulated for the assembly of GEOTEC® and GEOFLAM® boards.

Technical notice
Geostaff fire-resistant plaster for passive fire protection

GEOPLÂTRE® N plaster

Specific plaster for finishing work on fire-resistant Geostaff structures, in combination with our prefabricated elements.

Technical notice
Filasse Sisal Geostaff

Sisal fiber

Vegetable fibre used in the mixture of the "polochonnage" to fill in the joints between the boards.

Technical notice

Technical documentation

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Geostaff catalog
Glue & screw system

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