GEOFLAM® Smoke extraction and ventilation ducts
Smoke extraction and ventilation
In the event 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.
The smoke extraction ducts will allow to protect all along the path of a so-called internal fire, the premises crossed while the ventilation ducts will allow to protect the internal volume of a duct from a fire, usual expression “external fire”.
Learn more about passive fire protection.
GEOFLAM® ventilation and smoke extraction ducts
GEOFLAM® ventilation ducts are made by juxtaposing GEOFLAM® F-Light 2-hour fire resistant boards (35 mm thick) or GEOFLAM® FX 3-hour fire resistant boards (50 mm thick).
GEOFLAM® ventilation ducts using the same range of boards are installed with the help of ductile blocks (a mixture of GEOPLÂTRE®, GEOCOL® glue and sisal fiber).
These systems are available for fire ratings of EI 120 and EI 180: 2- and 3-hour fire stop, according to the fire rating standards EN 13501-3 and EN 13501-4.
All GEOFLAM® F- Light fire-resistant boards are moulded to standard dimensions, with a rebate on both sides for 35 mm thick ducts, to facilitate their assembly, in the case of 2-hour fire resistant duct installations: EI 120.
GEOFLAM® FX fire resistant boards, of unique dimensions, do not have longitudinal rabbets for easy cutting and assembly, in the case of 3-hour fire resistant duct installations: EI 180.
System advantages
- 2 to 3-hour fire resistance rating
- 100% natural gypsum-based products
- Ease of installation
- Time saving
- Compatible in particular with Rft products
System performances
GEOFLAM® 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 | GEOFLAM® F-Light | 35 | EI 120S | PV n° 13-A-895 | 0x0 to 1250x1000 | 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) | Polochonnage (mixture of sisal fibre and glue) |
| Horizontal and vertical smoke extraction | GEOFLAM® FX | 50 | EI 180S | PV n° 10-A-067 Rév.3 | 0x0 to 2500x2000 | 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) | Polochonnage (mixture of sisal fibre and glue) |
GEOFLAM® 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 | GEOFLAM® F-Light | 35 | EI 120S | PV n° 13-A-894 | 0x0 to 1250x1000 | 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) | Polochonnage (mixture of sisal fibre and glue) |
| Horizontal and vertical ventilation | GEOFLAM® FX | 50 | EI 180S | PV n° 12-A-344 Rév.3 | 0x0 to 2500x2000 | 7 ml (2 reinforcement collars) 10 ml (3 reinforcement collars) | Polochonnage (mixture of sisal fibre and glue) |
Associated Products
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).
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).
GEOTEC® SX30 boards
1 hr. fire protective board, thickness 30 mm and unique dimension 1200 (W) x 1000 (L) mm.
GEOTEC® SX45 boards
2-hr. fire protective board 45 mm thick and unique dimension 1200 (W) x 1000 (L) mm 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.
GEOTEC® A U-plaster
Pre-moulded elements of variable dimensions for the protection of the metal supports of horizontal ducts.
GEOCOL® fireproof glue
Powder-coated glue, available in 25 kg bags, especially formulated for the assembly of GEOTEC® and GEOFLAM® boards.
GEOPLÂTRE® N plaster
Specific plaster for finishing work on fire-resistant Geostaff structures, in combination with our prefabricated elements.
Sisal fiber
Vegetable fibre used in the mixture of the "polochonnage" to fill in the joints between the boards.
