Dry, pressurized, or wet risers and fire hydrants

From design to installation, Axima Fire Safety offers the best fire protection and fire safety solutions in compliance with current standards.

For the installation of dry risers, wet risers, or fire hydrants, Axima Sécurité Incendie provides support for all types of projects.

Dry or loaded riser: an effective fire protection system

A dry column: What is it?

A dry riser is a system designed to fight fires because it saves firefighters time. It is installed in buildings with multiple stories or basements.

It consists of a rigid pipe that runs through the building. A fire hose can be connected to each end. It is, in a sense, a pre-positioned fixed hose. One end is located in the area to be protected, and the other is located outside.

The dry riser: invaluable to firefighters

During a fire in a protected area, the firefighting team responsible for the water supply connects the dry riser to the fire truck using a flexible hose. The team responsible for tackling the fire goes up to the affected floor (or the floor below), unrolls its hose, and connects it to the other end of the dry riser.

Simply put, the dry riser serves as a shortcut to deliver the water needed to extinguish the fire in the shortest possible time.

Regulations for Dry Fire Protection Stands

Outdoor power outlets must be no more than 3 m from the entrance to the building where the riser is located and less than 60 m from a fire hydrant or a fire hydrant post.

For establishments open to the public (ERP)

They are required whenever high-risk areas are located on floors whose lower edge is more than 18 meters above the level of the roadway accessible to fire department vehicles.

For covered parking garages

Also required when the parking garage has at least three levels immediately above or below the reference level. In such cases, dry risers are installed in each stairwell or in the evacuation lobby.

Loaded (or wet) columns: What are they?

These are fixed, rigid pipelines that operate under pressure and are designed to facilitate firefighter operations.

Unlike a dry standpipe, a wet standpipe—also known as a “pressurized” standpipe—is pressurized and continuously supplied by pumps and a water reservoir. A wet standpipe can be thought of as an fire hydrant located indoors.

They are continuously supplied with water and are connected to pumps, reservoirs, boosters, or any other device capable of supplying water to the fire hoses used by firefighters.

The Advantage of the Loaded (or Wet) Column

In the event of a fire, the firefighting team assigned to tackle the blaze connects its hoses directly to the affected floor. The responsible unit significantly reduces the time required to reach the affected area as quickly as possible.

Installation and Maintenance of Dry Columns and Loaded Columns

We provide these services in accordance with the NF S 61/759 standard.

Fire hydrant: for rapid access to water

Fire hydrants are firefighting devices installed by municipalities or private companies (industry, public-access facilities, military sites) on their premises.

What is the purpose of a fire hydrant?

Through an underground or overhead water supply network, fire hydrants provide pressurized water for use by firefighters. Fire hydrants consist of pipes with an internal diameter of at least 100 mm.

Installation and Maintenance of Fire Hydrants

Axima Fire Safety: Comprehensive support from design to installation of your fire hydrants:

Layout and sizing studies
Compliance studies
Preparation and monitoring of administrative procedures, compliance reports
Earthwork and hydrant installation

We provide the mandatory maintenance of fire hydrants as well as any necessary repairs and troubleshooting, in accordance with the NF S 62-200 standard.

During the winter, the underground drain valve opens when the water valve is completely closed to prevent the water from freezing.