Slot Drain Pan Uk
Slot Drainage Overview
We supply a wide range of slot drain systems to suit your specific requirements and budget. Our slot drains are suitable for a wide range of applications from smaller landscaping projects to major industrial developments. Load capabilities range from A15 all the way up to F900.
Slot drains are proving more and more popular with our customers due to their superior aesthetic finish and ease of install. From smaller projects such as landscaping schemes, shopping developments and parking facilities or larger projects such as airports and ports.
Kent Hidden Slot Drain is a highly effective yet discreet drainage solution for public realm landscapes. The Slot is cut back from 100mm to 30mm which leaves the end result as an open slot with no visible stainless steel The Kent Hidden Slot Drain System is made up of five different products; Kent Hidden Slot Channel, Recessed Access Cover, Outlet Point, Access Point and Connectors. Stainless Steel Slot Drains Favoured by landscape architects, our slot drain has been designed to offer a very discreet but highly effective channel drainage solution. The slot channels maximise flow capacity while minimising the profile visible at ground level, allowing it to fit within the surrounding area.
What is a slot drain?
A slot drain is a linear drain system that is installed underground and is used to expel groundwater to prevent flooding. Slot drains are another type of channel drain or trench drain system. In contrast to these systems, a slot drain does not include a grating on top and with less slot drain visible, it provides a less obtrusive finish. This makes it increasingly popular for areas where there is high pedestrian traffic or applications that require a better aesthetic look, such as landscaping schemes. They are, however, also popular across a wide range of applications including areas with ultra loading traffic.
What types of slot drain do we supply?
We supply a wide range of slot drain from a number of leading brands. These include Swarm Aqua, Gatic and Aco Qmax, to name but a few.
Our slot drain is supplied in a wide range of sizes and with different load ratings to suit your specific requirements. We can also arrange for bespoke sizing of slot drain to be manufactured to suit your needs.
What sizes of slot drain do we supply?
We supply a wide range of sizes in slot drain to suit your specific need. This includes widths of 12mm to 75mm, lengths from 25mm to 635mm, and depths from 290mm to 600mm. We can also arrange for slot drain to be manufacture in bespoke sizes to suit your needs.
What do the different load ratings of slot drain mean?
Load ratings of slot drain are used to distinguish between the different applications that the drainage can be used for. From A15 being the lowest to F900 being the highest.
- A15 slot drain loading:
This rating is for mainly domestic use. Types of projects include landscaping in gardens and patios, or areas used for pedestrians or cyclists. In areas where anything is over 1.5 tonnes, products with this load rating will not support the weight and not be suitable. - B125 slot drain loading:
This rating is for smaller scale projects, such as public footpaths and driveways. In areas where loads are over 12.5 tones, this channel will not support the weight. - C250 slot drain loading:
This rating is for loading applications such as commercial areas and car parks or light traffic highways. In areas where loads are over 25 tonnes, this channel is not suitable. - D400 slot drain loading:
This rating is for areas with car parking for heavy vehicles, such as factories, supermarket carparks and carriageways of major roads. In areas where loads exceed a weight of over 40 tonnes, it is not suitable. - F900 slot drain loading:
This rating is for areas with the highest weight of loading traffic, such as airports and ports. It is manufactured to withstand a weight of up to 90 tonnes.
A trench drain (also channel drain, line drain, slot drain, linear drain or strip drain) is a specific type of floor drain containing a dominant trough- or channel-shaped body. It is used for the rapid evacuation of surface water or for the containment of utility lines or chemical spills. Employing a solid cover or grating that is flush with the adjoining surface, this drain is commonly made of concrete in-situ and may utilize polymer- or metal-based liners or a channel former to aid in channel crafting and slope formation. Characterized by its long length and narrow width, the cross-section of the drain is a function of the maximum flow volume anticipated from the surrounding surface. Channels can range from 1 inch (25 mm) to 2 feet in width, with depths that can reach 4 feet (120 cm).
Trench drains are commonly confused with French drains, which consist of a perforated pipe that is buried in a gravel bed, and which are used to evacuate ground water. A slot drain, also wrongly associated with a trench drain, consists of a drainage pipe with a thin neck (or slot) that opens at the ground surface with sufficient opening to drain storm water.
Types[edit]
There are four common types of trench drains which are based on forming or installation method. These are cast-in-place, pre-cast concrete, liner systems and former systems. Newer stainless steel drains are available for residential and commercial shower installs and more commonly called 'channel drains'.
Cast in place[edit]
This is the original standard for trench drain systems. Here, a concrete trench is formed in the ground using wood forms, reinforcing bar and manual labor. It involves several steps:
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- Building a wooden mold that will ultimately form the channel for the trench drain;
- Attaching a set of metal frames to the top edge of the form (which will hold the trench grating);
- Suspending the form inside the trough (and flush with the surface elevation), such that there is space (6 inches or more) below and to each side of the form;
- Attaching the drainage pipes to the suspended form;
- Filling the trench with concrete (surrounding the form base and sides) and finishing the concrete flush with the metal frame;
- And after drying, removing the wooden form, cleaning the pipe inverts and placing the grates in the frame.
This installation method is by far the most labor-intensive. In addition, material cost is a function of the width of the grate used in the trench.There are three main reasons why this is labor-intensive: the outlet pipe position in the floor, the levelling of the trench grate in the floor, and integration of the waterproofing. If the outlet is not exactly in the centre, then the channel must be customized, increasing cost and time to construct.This can be overcome by the use of modular trench drain systems. These allow the drain pipe to be connected anywhere along the trench, giving the builder and plumber more freedom to place the services, reducing construction time and costs, particularly in high-rise situations where moving plumbing services can be nearly impossible. Achieving a curbless or hobless entrance for special needs access is more readily achieved with a modular system, as the levelling of the shower floor to the bathroom floor is inherently problematic with non-modular systems as they have no on-site adjustment.Waterproofing is possibly the most critical aspect of the bathroom when integrating a channel/trench drain. There are two ways to approach the waterproofing issue. First is to develop a proprietary method where the waterproofing and trench drain are a kit. Second is to separate the waterproofing and trench drain.The first method has the benefit of an 'all-in-one' solution, but the downside is cost and limitation of the system in varying applications, i.e. limited generally to bathroom application. The second method is generally safest as the waterproofing is completed using established proven methods that most building contractors are familiar with. A second benefit is when the waterproofing is a separate item all methods of waterproofing (cementeous, bitumized, fibreglassed, paint-on, sweat-on, lead-lined, copper pan etc.) can be utilized. This will allow a modular system to be used in many applications such as pools, balconies, thresholds, pedestrian areas, public areas, essentially most wet areas where a waterproofing system is required, be it on ground or above (suspended slab).Stainless steel trench drains can also be installed in a home's shower and in commercial locations like hospital rooms, changing rooms and operating rooms.
Former systems[edit]
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This installation method is the logical successor to the cast-in-place method. The former system gives a cast-in-place product without the hassle of making the form. Rather than wood, the forms are made of lightweight expanded polystyrene (EPS) or cardboard. The forms attach to a prefabricated frame and grate system that can then be easily set in the trough and aligned for the pouring of concrete. And, like the cast-in-place method, the form is removed after the concrete has dried. The real savings with the former method is in time required for making and setting the form. The efficiency of the former system helps speed up the installation thus reducing labor costs.One downside to the former system is the waste generated by the disposal of the EPS and cardboard.
Pre-cast concrete[edit]
Pre-cast trench drains are made in a factory that specializes in making concrete shapes. The channel pieces range in width and length, larger channels requiring heavy equipment to move them, however most channels can be picked up and moved easily by hand. The channels are formed in large metal forms that (usually) have a pre-determined channel width, depth, and slope. Like in the cast-in-place method, a metal frame is attached to the form and concrete is poured and finished in a factory atmosphere. The advantage to the pre-cast trench drain is again time savings—big time savings at the job site. Pre-cast trench drains made of a polymer concrete are also more sturdy and reliable than cast-in-place trenches. Once a trough is dug, the pre-cast trench sections can be installed and quickly be put into service through numerous methods. A patty method can be used by placing clumps of concrete at each trench drain channel joint and the channels can be levelled and set as such. Further installation methods involve clipping rebar through installation device used with the channel. Concrete will need to be poured to surround the trench drain so that the load can be transferred from the channel and grate to the surrounding areas.
Pre-cast trench drains generally come in 4-inch widths but can range anywhere from a 1-3/4-inch slot to 2-inch-wide channels with grates, and up to any size imaginable through custom trench drain divisions. A home owner could consider a pre-cast trench for a landscaping project as there are many pre-cast trench drain systems being manufactured specifically for the residential market. A person generally can go to a pre-caster or a distributor and buy 50 feet of trench drain out of the yard; the cost of the material to create the trench drains can be more expensive than simply using cast-in-place systems, however the money saved through installation, maintenance, and longevity heavily outweighs those costs.
Linear systems[edit]
The popular trend in trench drains are linear systems. Linear as in line drain. Made from materials such as polymer concrete, fiberglass, structural plastic and steel, liner systems are the channel and grate components that are assembled in the trench and around which concrete is poured to form a drain system. By themselves, these liner systems do not have the strength and integrity to hold up under the physical requirements needed for the trench drain systems. A concrete (or asphalt) drain body is required to encase the channel to give the channel compressive strength and rigidity to ensure the drain will be able to withstand the traffic load it was designed to handle.
Construction[edit]
Airports[edit]
The use of trench drains in construction began with the commission by the British Airports Authority of a company called Gatic. Airports were in need of a form of trench drainage with fewer movable parts and less tendency to collapse under heavy traffic than the traditional trench drain gratings. Gatic designed and engineered the first stainless steel slot drain, and it was installed first at Stansted Airport in the United Kingdom, following which it was specified at Britain’s most famous airport – Heathrow. These airports continue to use stainless steel slot drainage both airside and landside for surface water drainage requirements.
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Industrial, Development and Urban Landscapes[edit]
Following the use of slot drainage at airports, the manufacturers began engineering slot drainage for other types of construction project, including ports, docks, industrial areas, motorways, roads, car parks and urban developments. Differing sizes and load ratings variations of the original slot drain product now exist, manufactured by Gatic and a handful of other manufacturers, most notably Halfords and Aco technologies.
Standards[edit]
The American Society of Mechanical Engineers (ASME) publishes the following Standard:
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- ASME A112.6.3 on Floor and Trench Drains