TDS Drainage Glossary

Many trench drain systems offer options to include a turn or 90-degree angle. Some offer a 90-degree angle as a separate section but some have systems that require modifications. In these cases, you may have options to cut a mitered angle along the channel and grate or cut a section to assemble one channel to the top/side of the next channel instead of a miter cut. Some systems have round knockouts that allow for pipes to be assembled so that the turn is achieved with a Schedule 40 pipe underground that leads to the next channel.

American Association of State Highway and Transportation Officials – is a standards-setting body that publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United States. Many airport and highway drainage projects must meet guidelines established by AASHTO.

The Americans with Disabilities Act (ADA) states that grates in walking areas have slot openings no larger than 1/2″ in size in one direction. This measure allows for wheelchairs to safely cross grated areas. This measure can also be applied to areas that will see bicycle traffic.

This system has a variety of terms associated with it such as frame and grate or rail and grate systems. It consists of two 90-degree rails that are installed when a trench drain is formed with the intent of providing a lip or ledge for the trench drain grates to sit on. The frames also allow for locking devices to be used to hold the grates in place. These systems can be made of any number of materials but are typically made of cast iron, fiberglass, or a combination of materials. Click here to see an installation guide for a fiberglass frame and grate system.

American National Standards Institute is a private non-profit organization that manages the standardization of processes, services, personnel, and products in the US. Grate Load Classes are defined as:

Light Duty
All grates have a safe live load (as calculated in paragraph 6.1.6 of the ANSI Standard) under 2,000 lbs. (900 kg.) For pedestrian foot traffic only.

Medium Duty
All grates have a safe live load (as calculated in paragraph 6.1.6 of the ANSI Standard) between 2,000 lbs. (900 kg.) and 4,999 lbs. (2,250 kg.)

For light pneumatic tire traffic only. Sidewalks and residential parking.

Heavy Duty
All grates have a safe live load (as calculated in paragraph 6.1.6 of the ANSI Standard) between 5,000 lbs. (2,250 kg.) and 7,499 lbs. (3,375 kg.)

For commercial pneumatic tire traffic patterns and tractor-trailers.

Extra Heavy Duty
All grates have a safe live load (as calculated in paragraph 6.1.6 of the ANSI Standard) between 7,500 lbs. (3,375 kg.) and 10,000 lbs. (4,500 kg.) For forklift traffic. Roads and Highways. H-20 Load Rated.

Special Duty
All grates have a safe live load (as calculated in paragraph 6.1.6 of the ANSI Standard) over 10,000 lbs. (4,500 kg.) For airport traffic.

With a strong background in metallurgy and geology, Trench Drain Systems has created a precise technique that provides an advanced patina on cast-iron grates. Cast iron, in its natural state, may arrive in a gray or silver color but will immediately begin to rust with exposure to any moisture leaving a bright orange finish. Through a series of baths in water and oil, along with literally baking grates in an oven, the end results are grates that have a chocolatey brown patina similar to what you see in parking lot grates. Learn more about our BoOF process.

Bar grating is a term that is indicative of heavy-duty grating that usually has a variation of a grid pattern with large grate openings or flow areas. They are available in a variety of materials but are commonly available in cast iron, fiberglass, and stainless steel.

Drain grates can create a number of hazards for bicyclists with sinkholes around frames, raised frames, wide longitudinal slots, or gaps between frames and grates. If you are working on a project that requires grates that are safe for bicycle traffic; we recommend looking at ADA-compliant trench drains and grates. If they are safe for wheelchairs, they are safe for bike tires.

A bottom outlet is simply an opening in the bottom of a channel drain to allow the flow to exit below the drainage system. They are typically connected to a Schedule 40 pipe. Many trench drain systems provide either a special adapter to accept a bottom outlet or an area on the channel is marked or embossed with a knockout to facilitate drilling an outlet to accept a pipe. Click here to see examples of bottom outlets.

Trench Drain Systems offers an exclusive selection of decorative grating called Bronze Age Decorative Grates. These grates are made of aluminum, bronze, and stainless steel with over a dozen different patterns. At this point in time, the majority of the grates in this line are compatible with the 3″ NDS Mini Channels and the TDS MAX Mini drainage system but also include round point drain grates as well.

At Trench Drain Systems, we use the term ‘brushed’ to describe a polished finish we offer on our exclusive line of Bronze Age Grates. The process provides a shine and adds a high-contrast appearance to decorative designs. These grates are commonly used in courtyards and near high-end pool areas. Click here to view a selection of drainage kits and individual grates.

Trench drain systems are either straight/neutral or pre-sloped. There are several configurations that can be used to achieve a slope. Some systems offer channels that have built-in slopes to quickly divert runoff. Straight channels can be used to create either a non-sloped run or a cascade slope by using channels that are consecutively deeper and connecting them with special couplers to create a step-down effect. A mixed slope is a combination of sloped and straight channels for a smoother step-down effect. Need help planning your next project? Call our experts at 610-638-1221 or request info today.

Cast iron is a hard alloy of iron and carbon that can be cast into a mold and contains a higher percentage of carbon vs. steel, usually around 2-4%. It is one of the most common materials used for channel lids. In its natural state, cast iron begins to naturally rust with any exposure to moisture, turning it bright orange within hours. Over time, the color gradually turns to a medium shade of brown. Some customers prefer to purchase grates that have a Baked on Oil Finish (BoOF) that speeds up the process to avoid staining new concrete. Click here to view cast iron grate options.

Sometimes referred to as point drains; simply put, a catch basin is a storm drain that is used to redirect water in order to prevent flooding. They are available in a variety of shapes, sizes, and materials. Catch basins can be found lining public streets, parking lots, or near residential driveways and downspouts. Inline catch basins can be incorporated with linear trench drains along with debris baskets to allow for easy access for cleaning. Square catch basins provide many opportunities for grating with decorative options, high flow, or domed atrium grates that deter lawn debris from clogging them.

Channels, in the case of drainage systems, refer to the vehicle in which storm water and other fluids are directed. There is a multitude of related terms including trough, strip drains, gutter, canal, gully, or simply, trench drains. Trench drain systems are available in channels made of stainless steel, polymer concrete, poured concrete, fiberglass, and plastics.

Channel joints refer to how drainage channels fit together. Some systems such as HYDROPLUS have male and female ends molded into the channels for easy installation. POLYCAST also has this feature but also requires installation chairs to help suspend and level the system during the concrete pour. Some trench drains offer a rubber gasket between each channel while others may require a sealant at each seam.

For some industries, it is important for the drainage system to endure harsh chemicals and extreme conditions. Typically, these concerns are associated with chemical and industrial manufacturing as well as the food and beverage industry. In these cases, stainless steel and vinyl ester polymer concrete channels are recommended. However, feel free to contact us to inquire about specific chemical resistance information recommendations.

Commercial applications require special considerations when selecting a trench drain system. Some have sanitary requirements that are imposed by state and local governments. Others have to redirect harsh chemicals or fluids with extreme temperatures. Feel free to contact us for guidance and recommendations for your projects. Or call us today at 610-882-3630.

Continuous flow, in terms of drainage, is an uninterrupted path for stormwater and other runoff to follow. It is usually in reference to a straight run of linear trench drain system without any turns or intersections. TDS has an on-site engineering department. Contact us for project assistance.

In cases where polymer concrete channels or catch basins need outlet openings drilled in the sides, ends, or bottom core drilling with drill bits specifically designed to achieve this are used so that the units will accept pipes and adapters. This can be accomplished at the job site or in advance for specific diameters by TDS.

CSI stands for the Construction Specifications Institute which is a national association in the United States. They represent over 8,000 expert construction industry professionals who are dedicated to improving the documentation management and communication of building information as used by the construction industry.

Trench drain channels with no slope are referred to as neutral or dead level. There are complete systems that are nonsloping such as HYDROPLUS and Mini Channel. A pre-sloped system is not always needed, many factors are considered when sizing a system. Water will always flow to the lowest point, even in a neutral system, water pushes water. If you’re planning a project and need expert advice, call 610-882-3630 or complete this form.

Sometimes referred to as a trash basket, this term refers to an apparatus that sits within a catch basin that catches debris. This device prevents the drainage channel from getting blocked. They are typically made of plastic, stainless steel, or filter fabric. It is important to schedule maintenance to ensure that the baskets are emptied to allow for continuous flow.

Deck drains are designed to direct water away from patio and pool areas and divert it to another location. There are several drainage options available in this situation. You can consider trench drains, catch basins, or point drains leading to a Schedule 40 pipe. Click here to explore the options.

Grates are designed to either blend in or make a statement. Trench Drain Systems offers a variety of decorative grates as well as an exclusive selection of decorative grating called Bronze Age Decorative Grates. These grates are made of aluminum, bronze, and stainless steel with over a dozen different patterns. At this point in time, the majority of the grates in this line are compatible with the 3″ NDS Mini Channels and the TDS MAX Mini drainage system but also include round point drain grates as well.

DIN is an acronym used to represent the German Institute for Standardization. Most drainage-related companies follow the weight load standards (Load Class ratings) when specifying trench drain systems for projects.

Load Class refers to the weight of the moving traffic that will be crossing the trench drain system. For example, Load Class A refers to pedestrian traffic while Load Class F is related to highway and jetliner airport traffic. Keep in mind that the word ‘moving’ traffic is important. If you are planning a project that will have standing weight on a system, ensure that the grate and channels are able to handle the stationary weight. Click here to view a Load Class chart.

There are a few terms used when discussing the grates that cover trench drain systems while allowing water to be redirected into the channel. The more common term is grates or grating but some other terms include lids, grates, or plates. Grates are available for just about any width and length. Visit our online store to shop for replacement grates in a wide selection of sizes, shapes, and materials that include fiberglass, ductile iron, cast iron, bronze, aluminum, and plastic(s).

There are a few terms used when discussing the grates that cover trench drain systems while allowing water to be redirected into the channel. The more common term is grates or grating but some other terms include lids, grates, or plates. Grates are available for just about any width and length. Visit our online store to shop for replacement grates in a wide selection of sizes, shapes, and materials that include fiberglass, ductile iron, cast iron, bronze, aluminum, and plastic(s).

Similar to cast iron grates, ductile iron grates only have a few differences. The main difference is that ductile iron grates contain graphite that increases their flexibility. They can withstand extreme colds and not break compared to cast iron grates. They both rust over time but ductile iron oxidizes at a slower rate than cast iron. Our comprehensive Baked on Oil Finish (BoOF) process can also be applied to any ductile iron grates to avoid staining new concrete.

End caps in relation to trench drains typically refer to a solid plate that affixes to the end of the channel. In some cases, end caps may have an embossment or raised area to be used as a guide to core drill or knock out an opening for connection to Schedule 40 pipe or other fixtures.

Exfiltration trenches and trench drains have similarities but are not the same. It is a method of returning stormwater runoff to groundwater. Some include perforated pipes within the gravel to assist in redirecting runoff. These systems typically receive stormwater from catch basins and pipes for redirection. Need expert guidance for your project? Call us today at 610-882-3630 or request information online.

Extrusion is a plastic manufacturing method used by several drainage manufacturers. It provides a cost-effective and efficient process to create drainage systems. The 3″ NDS Mini Channel is created through this method. Visit our blog to learn more about the process.

EZ Frames are angled rails used for contractors who prefer to create their own trench drain system by forming channels and using these fiberglass pultruded frames to become the chair on which the trench drain grates will sit. EZ Frames are available in 1″, 1.5″, and 2″ heights and feature a low-profile anchor designed to help lock it securely into concrete during installation. Rails can be set at any width providing that the grates are appropriate for the Load Class and application. Equally important is that the height of the grates must not sit above ground level to prevent a tripping hazard.

Pultrusion is a forming process for converting reinforced fibers and resin into fiber-reinforced plastic, also known as fiber-reinforced polymer (FRP). FRP is up to 70% lighter than steel with an exceptional strength-to-weight ratio. FRP is corrosion-resistant, non-conductive, and requires less maintenance. Fiberglass grating is available individually, in frame and grate kits, or in custom sizes. Click here if you are interested in a custom quote.

Fiberglass grates are made of reinforced plastic material with embedded glass fibers. They are created with a forming process known as pultrusion, also known as fiber-reinforced polymer (FRP). FRP is up to 70% lighter than steel with an exceptional strength-to-weight ratio. FRP is corrosion-resistant, non-conductive, and requires less maintenance. Fiberglass grating is available individually, in frame and grate kits, or in custom sizes. Click here if you are interested in a custom quote.

Some catch basins offer fabric filters that facilitate seasonal maintenance. The filters keep lawn debris from building up and blocking water flow. They are designed so that the grate can be lifted to access the filter which can then be emptied, rinsed, and replaced.

Some drainage systems such as the pre-sloped FP1200 trench drain system have flanged bells at the joints to allow one channel to easily rest upon the other. One end is expanded out while the opposite end is straight and connects to the next consecutive channel. FP1200 is available for purchase in kits or through a project quote exclusively through Trench Drain Systems.

Floor Drain has a broad range of meanings in the industry. It can refer to gutter drains that are a simple narrow trench lining a basement wall, a point drain or catch basin typically located in the center of a room, or a trench drain system complete with grates. The purpose of floor drains is to divert or redirect water in order to keep the space free of pooling water.

Flow area refers to the openings in the trench drain grate where the runoff flows. Determining the flow area for grates is an important project consideration. Larger openings allow for faster water removal but can create hazards for pedestrians and bicyclists. Smaller openings can be heel-proof, ADA compliant, and prevent lawn debris from entering the trench drain system but can also become blocked and cause flooding if not properly maintained.

Flow capacity is a measure of how efficiently liquid flows through an area. Many projects with trench drain systems are specified based on a formula that helps to determine the Gallons per Minute (GPM) of the runoff. The amount of anticipated runoff, regional weather patterns (when applicable), and the amount of permeable and non-porous surface areas are all factors that determine the necessary flow capacity of the trench drain system needed. Click here for our experts to help you determine the right system for your project.

Flow rate is also known as Gallons Per Minute (GPM). It is a measure of how many gallons of water should flow per minute. Most trench drain systems have a GPM associated with their specifications. However, project planners also need to consider the diameter and placement of the outlet which can dramatically impact the flow rate. Click here for our experts to help you determine the right system for your project.

Trench drain systems are chosen based on traffic weight and load class ratings. Forklift rating, in this instance, refers to the system being able to hold a rolling weight of over 89,000 pounds. Keep in mind that the weight distribution for forklifts with solid vs. air-filled tires is different. Also, factor in the potential weight that the forklift will be moving.

Load Class refers to the weight of the moving traffic that will be crossing the trench drain system. For example, Load Class A refers to pedestrian traffic while Load Class F is related to highway and jetliner airport traffic. Keep in mind that the word ‘moving’ traffic is important. If you are planning a project that will have standing weight on a system, ensure that the grate and channels are able to handle the stationary weight. Click here to view a Load Class chart.

There are methods by which contractors may choose to create drainage channels. Some may form the channels using wood panels while others may choose to use commercially produced trench formers. Trench formers are one of two types commercially made of poured-in-place concrete trench drains. Trench forming systems use frame grates and a disposable pre-sloped form used to mold the concrete to form the drain channel. The other type of poured channels involves frame and grate systems that require a contractor to build the trench form that usually consists of a wood structure. Frame and grate systems can be made of a variety of materials including fiberglass. They provide a DIY trench drain system that allows flexibility in the width, depth, and slope of the channels. Click here to view install instructions for a fiberglass frame and grate system.

Gallons Per Minute (GPM) is also referred to as flow rate. It is a measure of how many gallons of water should flow per minute. Most trench drain systems have a GPM associated with their specifications. However, project planners also need to consider the diameter and placement of the outlet which can dramatically impact the flow rate. Click here for our experts to help you determine the right system for your project.

Galvanized steel is the process of applying a protective zinc coating to iron or steel to prevent rusting. Over time, galvanized metals will still rust. The rate at which rusting occurs depends heavily upon environmental factors. In the drainage industry, galvanized grates are available as a cost-effective alternative to stainless steel grates. Some trench drain systems offer embedded galvanized edging such as ULMA’s U100K and M100K drainage channels. Click here for our experts to help you determine the right system for your project or call 610-882-3630 today.

Many trench drain grates have openings that accept locking devices that hold the grate in place. Locking devices usually entail a bar and bolt system that locks into the coordinating channel. Some trench drains made of plastic use screws that keep grates in place. This can deter thieves who steal grates for scrap metal but also prevents debris from working in between the grates and channels which can ultimately damage the grates. Hold-down devices also keep grates from hopping when vehicles cross the trench drain system.

Gray iron, also known as gray cast iron, is a type of cast iron that has a higher blend of graphite in its mixture. It is corrosion-resistant and suitable for impact-resistance applications.

There are a few terms used when discussing the grates that cover trench drain systems while allowing water to be redirected into the channel. The more common term is grates or grating but some other terms include lids, grates, or plates. Grates are available for just about any width and length. Visit our online store to shop for replacement grates in a wide selection of sizes, shapes, and materials that include fiberglass, ductile iron, cast iron, bronze, aluminum, and plastic(s).

H20 is a load class rating that is equal to a Load Class of D. It refers to heavy-duty grates that are typically ductile iron grates used for forklifts and heavy vehicular traffic. It also implies that they are larger grates that are usually 12″ wide. However heavy-duty grates can be coupled with a frame in smaller 6″ systems with similar results. The POLYCAST 700® trench drain system would be an example of this. Call our experts for assistance with your project at 610-882-3630 or request a free quote.

HDPE is a type of plastic that is commonly used in the drainage industry. It is used to create anything from lightweight trench drain channels to robust grates that can withstand Load Class B traffic. Be sure to check the specific products for appropriate load rating and chemical resistance. Shop HDPE products or call our experts for assistance with your project at 610-882-3630.

When the term Heavy-Duty Grates is used, it is typically in reference to ductile iron grates used for forklifts and heavy vehicular traffic. It also implies that they are larger grates that are usually 12″ wide. However heavy-duty grates can be coupled with a frame in smaller 6″ systems with similar results. The POLYCAST 700® trench drain system would be an example of this. Call our experts for assistance with your project at 610-882-3630 or request a quote.

Heel-proof grates have openings that are no larger than 1/4″ to 5/16″. Because the flow area is less than 1/2″ these same grates are also considered ADA compliant and safe for bicycle traffic. This requirement usually applies to drain grates located in areas with high pedestrian traffic, including patios, pools, courtyards, and plazas.

When project managers are looking for high-capacity trench drain systems, they are referring to the flow rate of the runoff in addition to how much water can be redirected over time. GPM or Gallons Per Minute is the unit of measure that is discussed when considering which drainage system is appropriate. Looking for assistance with your project complete this form or call us today at 610-638-1221.

HLC or High Load Capacity refers to molded fiberglass grating that is engineered and created to handle forklift loads that standard fiberglass grates cannot withstand. These grates are lightweight, low in install cost, corrosion-resistant, non-conductive, and fire retardant. They can be purchased in drainage kits or if your project requires a custom size, complete this form or call us today at 610-638-1221 for pricing.

Many trench drain grates have openings that accept locking devices that hold the grate in place. Locking devices usually entail a bar and bolt system that locks into the coordinating channel. Some trench drains made of plastic use screws that keep grates in place. This can deter thieves who steal grates for scrap metal but also prevents debris from working in between the grates and channels which can ultimately damage the grates. Hold-down devices also keep grates from hopping when vehicles cross the trench drain system.

Stainless steel systems are the go-to when it comes to applications that require non-corrosive materials that are hygienic and easy to clean. With a smooth surface, the likelihood of the trench drain system becoming contaminated with harmful microorganisms and bacteria is greatly reduced. Stainless steel is a form of steel containing chromium that is resistant to tarnishing or rust. Trench drain systems composed of stainless steel are commonly used in commercial markets. In many states, they are required to meet health and hygiene standards. They are typically found in breweries, wineries, food processing, dairies, chemical plants, and pharmaceutical facilities. Standard 304 stainless steel holds up well to extreme chemicals and heat. However, drainage systems are also available in 316L stainless steel for marine-related applications.

Created from reinforced fiberglass plastic (RFP) composite. RFP is corrosion-resistant, non-conductive, and requires less maintenance. Fiberglass grating can be used for platforms, handrails, catwalks, pond skimmers, decks, footbridges, and more. Fiberglass grates are available individually, in frame and grate kits, or in custom sizes. Click here if you are interested in a custom quote.

I-bar fiberglass grates are named so based on the profile of the grates that are in the shape of an “I”. They are created from reinforced fiberglass plastic (RFP) composite. RFP is corrosion-resistant, non-conductive, and requires less maintenance. Fiberglass grating can be used for platforms, handrails, catwalks, pond skimmers, decks, footbridges, and more. Fiberglass grates are available individually, in frame and grate kits, or in custom sizes. Click here if you are interested in a custom quote.

The inlet is the point where water enters the drainage system. In some cases, Schedule 40 pipe is connected to the inlet of the trench drain but in other applications, runoff enters the channel directly through grates rather than entering from an underground source.

An inline catch basin is convenient when there isn’t room for a square catch basin. Aesthetically, inline catch basins can be added to any part of a linear trench drain run. Some project designers place it at either end but it’s not unusual to locate it with the channels sloping to the catch basin in the middle of the run.

Some product lines, such as POLYCAST, offer installation chairs to help suspend and level the system during the concrete pour. They are connected beneath the joint where two channels meet. Some trench drains offer a rubber gasket between each channel while others may require a sealant at each seam.

Regarding trench drains, an intersection refers to the point of the drainage system where straight channels, Tees or 4-way sections meet and join together. Need assistance planning a project? Contact our experts by completing this form or feel free to call us today at 610-638-1221.

Regarding trench drains, a joint refers to the intersection where two drainage channels or accessories come together. Depending upon the system configuration, channels can be connected with couplers, and installation chairs, or some are formed with tongue and groove or connect with male and female ends.

A knockout is an embossed or marked section of a drainage channel, catch basin, or end cap that accepts a pipe and/or adapter when opened. The openings are chiseled, cut or a core drill bit is used to make the opening. The method used is dependent upon the material of the product. If the product is made of polymer concrete, Trench Drain Systems offers a limited core drilling service.

Lead time in the trench drain industry refers to the amount of time the customer may need to wait for the product to be available. If items are out of stock, customers are provided with a time frame of when the product will be available from the manufacturer. Trench Drain Systems is the largest stocking distributor for POLYCAST and ULMA products within the USA which lessens the chance of having long lead times depending upon the system needed. Feel free to contact us to check for availability and possible lead times at 610-882-3630.

There are a few terms used when discussing the covers for trench drain systems. The more common term is grates or grating but some other terms include lids, grates, or plates. Grates are available for just about any width and length. Visit our online store to shop for replacement grates in a wide selection of sizes, shapes, and materials that include fiberglass, ductile iron, cast iron, bronze, aluminum, and plastic(s).

Load Class refers to the weight of the moving traffic that will be crossing the trench drain system. For example, Load Class A refers to pedestrian traffic while Load Class F is related to highway and jetliner airport traffic. Keep in mind that the word ‘moving’ traffic is important. If you are planning a project that will have standing weight on a system, ensure that the grate and channels are able to handle the stationary weight.Click here to view a Load Class chart.

Many trench drain grates have openings that accept locking devices that hold the grate in place. Locking devices usually entail a bar and bolt system that locks into the coordinating channel. Some trench drains made of plastic use screws that keep grates in place. This can deter thieves who steal grates for scrap metal but also prevents debris from working in between the grates and channels which can ultimately damage the grates. Hold-down devices also keep grates from hopping when vehicles cross the trench drain system.

Most grates have a slotted pattern that is positioned perpendicular to the trench drain system. Grates with a transverse slotted or longitudinal pattern have slots that run lengthwise rather than across the width of the drainage channels. These grates, depending upon the placement and application, can provide a more polished appearance. They are typically designed for areas needing heel-proof, bicycle-safe, or ADA-compliant grates.

Drainage grates are available in a variety of materials including metals.  Trench Drain Systems offers a wide selection of metal grates including aluminum, bronze, cast iron, ductile iron, galvanized steel, gray iron,and stainless steel. Which is better? It depends upon the application and more importantly, the heaviest traffic that will move across the system. Each has its pros and cons but if you would like some guidance, feel free to call our experts today at 610-638-1221 or request information here.

A trench drain system with a mixed slope is a combination of pre-sloped and straight/neutral channels that are connected with special couplers to create a smooth step-down effect. Need help planning your next project? Call our experts at 610-638-1221 or request info today.

The concrete industry refers to a monolithic pour as being one, all at once, pour. Depending upon the application, several layers of concrete can be poured. With trench drains, some contractors prefer several pours to set channels while other systems may require a monolithic pour. Trench Formers are one such system.

Natural grates refer to the raw condition that cast-iron grates leave the foundry as. Cast iron grates, after being produced, may arrive in a gray or silver color but will immediately begin to oxidize and rust with exposure to air and moisture leaving a bright orange finish. In some cases, grates can be processed with a Baked on Oil Finish (BoOF) to quickly settle the coloring.  It works through a series of baths in water and oil, along with literally baking grates in an oven, the end results are grates that have a chocolatey brown patina similar to what you see in parking lot grates. Learn more about our BoOF process provides a finished patina.

Nelson studs typically resemble a bolt and are found as projections on the side of drain channel frames or drainage grates in order to permanently secure trench drain systems in concrete. If you’re planning a project and need expert advice, call 610-882-3630 or complete this form.

Trench drain channels with no slope are referred to as neutral. There are complete systems that are nonsloping such as HYDROPLUS and Mini Channel. A pre-sloped system is not always needed, many factors are considered when sizing a system. Water will always flow to the lowest point, even in a neutral system, water pushes water. If you’re planning a project and need expert advice, call 610-882-3630 or complete this form.

In the case of drainage systems, no fall refers to a gradient slope. No fall simply refers to either a nonsloping landscape or a neutral system. There are complete systems that are nonsloping such as HYDROPLUSandMini Channel. A pre-sloped system is not always needed, many factors are considered when sizing a system. Water will always flow to the lowest point, even in a neutral system, water pushes water. If you’re planning a project and need expert advice, call 610-882-3630 or complete this form.

An offset adapter is typically a connection between two drainage systems, usually to Schedule 40 PVC Pipes. Standard adapters have an opening in the center of the part for the pipe to connect to. Offset adapters have the opening off-center which allows for some flexibility in placing drainage to facilitate lining up the pipes with other drainage systems such as a catch basin. If you need guidance with your project, feel free to call our experts (with no obligation) at 610-638-3630 or request information here.

Open area, also known as flow area, refers to the openings in the trench drain grate where the runoff flows. Determining the flow area for grates is an important project consideration. Larger openings allow for faster water removal but can create hazards for pedestrians and bicyclists. Smaller openings can be heel-proof, ADA-compliant, and prevent lawn debris from entering the trench drain system but can also become blocked and cause flooding if not properly maintained.

The outlet is the point in the drainage system where the water exits. Outlets are generally located on the side of the drainage channel, through an opening in the bottom of the channel, or through an open-end cap. Do you need assistance planning your project? Call 610-882-3630 or request information here.

Oxidation is defined as a corrosive reaction in which metal forms an oxide. Usually, this reaction is with a gas containing oxygen, such as air. Cast iron, in its natural state, may arrive in a gray or silver color but will immediately begin to rust with exposure to any moisture leaving a bright orange finish. In some cases, grates can be processed with a Baked on Oil Finish (BoOF) to quickly settle the coloring.  It works through a series of baths in water and oil, along with literally baking grates in an oven, the end results are grates that have a chocolatey brown patina similar to what you see in parking lot grates. Learn more about our BoOF process provides a finished patina.

Although the most popular grates have a slotted pattern, perforated grates are the second most popular grate pattern. Perforated patterns generally consist of a simple hole that is pierced, drilled, or molded into the grate. This pattern offers heel-proof, ADA-compliant, and decorative grate options. Keep in mind that although perforated grates help to keep debris out of trench drains, it is important to ensure that lawn debris doesn’t obstruct flow.

The outlet is the point in the drainage system where the water exits. Outlets are generally located on the side of the drainage channel, through an opening in the bottom of the channel, or through an open-end cap. Some systems offer special adapters that connect to pipes while others have embossed/knockouts that accommodate them. Should the system not offer an adapter, you may have the option to core drill an opening to accept the pipe.  Should you need assistance planning your project, call us at 610-882-3630 or request information here. We’re happy to help!

Point drains typically refer to shower or floor drains in bathrooms. Commonly seen in public restrooms with a round grate that fits over a Schedule 40.  However, in the drainage industry, it can also be in reference to the lowest point where water gathers. In these areas, drainage can be achieved with the pipe and grate combination mentioned or with catch basins.

Point weight is another way of stating standing or stationary weight. When determining which trench drain system is right for a project, the first consideration should be the weight of the traffic that the trench drains will endure. Typically, Load Class ratings often help to determine the type of grate and drainage system that is needed. However, it is important to consider heavy-duty options when the drains will need to be sustainable for long periods of holding massive weights, such as a horse standing in a wash bay. Normally, grates are designed to withstand rolling vehicles that have weight distribution, not stationary weight.

Pop-up emitters capture water that flows from a drainage system to a Schedule 40 pipe. The emitter sits on the end of the pipe and sits flush or level with the surface it is installed on. When heavy rainfall occurs, the runoff pushes the ‘lid’ of the emitter up to redirect water to a preferred location. They are typically installed in yards near the curb to channel the rainfall. In some instances, pop-up emitters are installed perpendicular to the curb for rainfall to flow directly into the street side of the yard.

Poured-in-place concrete trench drains are available in two options. Frame and grate systems that require a contractor to build the trench form that usually consists of a wood structure. Trench forming systems use frame grates and a disposable pre-sloped form used to mold the concrete to form the drain channel. Frame and grate systems can be made of a variety of materials including fiberglass. They provide a DIY trench drain system that allows flexibility in the width, depth, and slope of the channels. Click here to view install instructions for a fiberglass frame and grate system.

Trench drain systems are either straight/neutral or pre-sloped. There are several configurations that can be used to achieve a slope. Some systems offer channels that have built-in slopes to quickly divert runoff. Straight channels can be used to create either a non-sloped run or a cascade slope by using channels that are consecutively deeper and connecting them with special couplers to create a step-down effect. A mixed slope is a combination of sloped and straight channels for a smoother step-down effect.  Need help planning your next project? Call our experts at 610-638-1221 or request info today.

Pultrusion is a forming process for converting reinforced fibers and resin into fiber-reinforced plastic, also known as fiber-reinforced polymer (FRP). FRP is up to 70% lighter than steel with an exceptional strength-to-weight ratio. FRP is corrosion-resistant, non-conductive, and requires less maintenance. Fiberglass grating is available individually, in frame and grate kits, or in custom sizes. Click here if you are interested in a custom quote. 

Raw refers to the natural condition that cast-iron grates leave the foundry as is. Cast iron, in its natural state, may arrive in a gray or silver color but will immediately begin to oxidize and rust with exposure to air and moisture leaving a bright orange finish. In some cases, grates can be processed with a Baked on Oil Finish (BoOF) to quickly settle the coloring.  It works through a series of baths in water and oil, along with literally baking grates in an oven, the end results are grates that have a chocolatey brown patina similar to what you see in parking lot grates. Learn more about our BoOF process provides a finished patina.

Normally, grates are designed to withstand rolling vehicles that have weight distribution and are crossing trench drains. When determining which trench drain system is right for a project, the first consideration should be the weight of the traffic that the trench drains will endure. Typically, Load Class ratings often help to determine the type of grate and drainage system that is needed. However, it is important to consider heavy-duty options when the drains will need to be sustainable for long periods of holding massive weights, such as a horse standing in a wash bay.

A run of trench drain, also known as a channel drain, strip drain, linear drain or line drain, refers to a specific length of a trench that is covered with a grating and used to collect and redirect surface water.

Trench drains are typically used in places where surface water pooling is an issue and water needs to be redirected away quickly. They’re commonly seen around pool areas, driveways, parking lots, or any other paved surfaces, and can also be used indoors in places like garages or warehouses.

A run of trench drain is often made of concrete, plastic, or metal and can come in various sizes, both in terms of depth and width. The length, or the “run”, of the trench drain, is determined by the area of coverage needed for efficient water management. For example, if you were installing a trench drain in a 50-foot long driveway, your “run of trench drain” would be 50 feet.

It’s important to plan the run carefully, considering the slope of the ground, to ensure that the water will flow correctly into the drain and away from the area. It’s usually best to consult with a professional or an experienced contractor to ensure that a trench drain system is installed correctly.

TDS has experts on staff to assist with determining project needs. Call 610-882-3630 or complete an online request form.

Surface runoff is the flow of stormwater, rainwater, or other sources that are redirected by trench drain systems such as channels and catch basins. Selecting the proper drainage system depends upon many considerations including climate, traffic load, application, and applicable extreme conditions. TDS has experts on staff to assist with determining project needs. Call 610-882-3630 or complete an online request form.

A catch basin that is used for the collection of sand or other debris is also known as a sand trap. Sometimes referred to as a point drain; a catch basin is primarily used as a storm drain that is used to redirect water in order to prevent flooding. In order to facilitate maintenance, filters or debris baskets can be added to some models allowing for easy cleanout.

They are available in a variety of shapes, sizes, and materials. Catch basins can be found lining public streets, parking lots, or near residential driveways and downspouts. Inline catch basins can be incorporated with linear trench drains along with debris baskets to allow for easy access for cleaning. Square catch basins provide many opportunities for grating with decorative options, high flow, or domed atrium grates that deter lawn debris from clogging them. If you’re planning a project and need expert advice, call 610-882-3630 or complete this form.

Shallow trench drain systems typically have a total height of around 3″. Most shallow systems have no slope and are referred to as neutral. These drainage systems are commonly used in retrofit situations where concrete needs to be cut to accommodate the channels. There are complete systems that are shallow and nonsloping such as HYDROPLUS Mini and Mini Channel. A pre-sloped system is not always needed, many factors are considered when sizing a system. Water will always flow to the lowest point, even in a neutral system, water pushes water. If you’re planning a project and need expert advice, call 610-882-3630 or complete this form.

Trench drain systems are either straight/neutral or pre-sloped. There are several configurations that can be used to achieve a slope. Some systems offer channels that have built-in slopes to quickly divert runoff. Straight channels can be used to create either a non-sloped run or a cascade slope by using channels that are consecutively deeper and connecting them with special couplers to create a step-down effect. A mixed slope is a combination of sloped and straight channels for a smoother step-down effect.  Need help planning your next project? Call our experts at 610-638-1221 or request info today.

Stainless steel is a form of steel containing chromium that is resistant to tarnishing or rust. Trench drain systems composed of stainless steel are commonly used in commercial markets. In many states, they are required to meet health and hygiene standards. They are typically found in breweries, wineries, food processing, dairies, chemical plants, and pharmaceutical facilities. Standard 304 stainless steel holds up well to extreme chemicals and heat. However, drainage systems are also available in 316L stainless steel for marine-related applications.

Storm drains are drainage systems with a network of channels, pipes, and other structures used to redirect stormwater to ponds, lakes, streams, and rivers. They vary in size based on the application. Parking lots, for example, may have a series of trench drain systems and catch basins to redirect surface water. Need guidance? Call us at 610-638-1221 or request info today!

Similar to a debris basket, strainers are used to catch debris and facilitate trench drain maintenance. This device prevents the drainage channel from getting blocked. Trash or debris baskets are used as strainers for catch basins. They are typically made of plastic, stainless steel, or filter fabric. It is important to schedule maintenance to ensure that the baskets are emptied to allow for continuous flow.

Strip drains are linear trench drain systems used to divert stormwater and other fluids to desired locations. There is a multitude of related terms including trough, channel drains, gutter, canal, gully, or simply, trench. Trench drain systems are available in channels made of stainless steel, polymer concrete, poured concrete, fiberglass, and plastics.

Surface drains are drainage systems used to redirect stormwater to ponds, lakes, streams, and rivers. Surface refers to the rainwater located above ground.  Surface drains can be comprised of a network of structures including a series of trench drain systems and catch basins to redirect surface water. Feel free to call us for assistance at 610-638-1221 or request info today!

Most grates have a slotted pattern that is positioned perpendicular to the trench drain system. Grates with a transverse slotted or longitudinal pattern have slots that run lengthwise rather than across the width of the drainage channels. These grates, depending upon the placement and application, can provide a more polished appearance. They are typically designed for areas needing heel-proof, bicycle safe or ADA-compliant grates.

Sometimes referred to as a debris basket, this term refers to an apparatus that sits within a catch basin that catches debris. This device prevents the drainage channel from getting blocked. They are typically made of plastic, stainless steel, or filter fabric. It is important to schedule maintenance to ensure that the baskets are emptied to allow for continuous flow.

Trench drains are linear drain systems used to divert stormwater and other fluids to desired locations. There is a multitude of related terms including strip drain, channel drains, gutter, canal, or gully drains. Trench drain systems are available in channels made of stainless steel, polymer concrete, poured concrete, fiberglass, and plastics.

Trench drain systems are linear drainage channels that redirect rainfall or other fluids to desired locations. There is a multitude of related terms including strip drain, channel drains, gutter, canal, or gully drains. Trench drain systems are available in channels made of stainless steel, polymer concrete, poured concrete, fiberglass, and plastics. Need help planning a project? Call our experts at 610-882-3630 or complete this form.

Trench formers are one of two types of poured-in-place concrete trench drains. Trench forming systems use frame grates and a disposable pre-sloped form used to mold the concrete to form the drain channel. The other type of poured channels involves frame and grate systems that require a contractor to build the trench form that usually consists of a wood structure. Frame and grate systems can be made of a variety of materials including fiberglass. They provide a DIY trench drain system that allows flexibility in the width, depth, and slope of the channels. Click here to view install instructions for a fiberglass frame and grate system.

Trough drains are linear trench drain systems used to divert stormwater and other fluids to desired locations. There is a multitude of related terms including strip drain, channel drains, gutter, canal, gully, or simply, trench drains. Trench drain systems are available in channels made of stainless steel, polymer concrete, poured concrete, fiberglass, and plastics.

Vinyl ester is a type of resin used to manufacture products that withstand demanding conditions including harsh chemicals, corrosion, extreme temperatures, and marine applications. In the drainage industry, vinyl ester trench drains are commonly found in breweries, chemical processing plants, restaurants, and food processing facilities. During periods when the vinyl ester is difficult to come by, consider stainless steel channels as an alternative. Click here if you are interested in a custom quote. 

The Americans with Disabilities Act (ADA) states that grates in walking areas have slot openings no larger than 1/2″ in size in one direction. This measure allows for wheelchairs to safely cross grated areas. This measure can also be applied to areas that will see bicycle traffic. Click here to view ADA-compliant trench drain systems and grates.

Some drainage systems are custom-formed by contractors. In those situations, frames or rails are available to embed in concrete in order to provide a ledge or chair for the drainage grates to rest on. The wye frames that Trench Drain Systems offers are made of fiberglass and have a distinctive “Y” shape that allows for a robust anchor point that locks concrete in place during the pour. Fiberglass frames and grating kits are available through our online store. Looking for something custom? Click here if you are interested in a custom quote. 

Zipper drains are linear drain systems used to divert stormwater and other fluids to desired locations. There is a multitude of related terms including strip drain, trench drain, channel drains, gutter, canal, or gully drains. Trench drain systems are available in channels made of stainless steel, polymer concrete, poured concrete, fiberglass, and plastics.