Do trench drains need to be sloped?
Matthew Wilson
Updated on April 24, 2026
When it comes to the in-floor draining system, your floors must have a slope that allows water to flow to the drain channel. With this system, you need a two-sloped floor to let it work properly. You can use this system for outdoor and indoor commercial, residential, and industrial applications as well.
How do you size a trench drain?
- In order to size a trench drain system (lenght and width), the following information is needed: 1 Total lenght of the trench drain (feet or meters).
- trench (feet or meters).
- area where the trench drain will be installed.
- drain run.
- Please contact FILCOTEN sales of engineering for any help you may require.
How long are trench drains?
Our products range from 6” to 14” stainless steel trench drains to molded, solid concrete drains with custom-designed frames and grates. The trench drains that we install meet industry safety standards.
How much slope does a trench drain need?
Dig a Trench French drains need to have a slope of at least 1 percent, so the force of gravity will work for you. This means that the drain should slope down a total of at least one inch for every 10 feet of pipe.
How do you slope a trench drain?
For water to properly drain, your drainage trench must slope downwards at least 1 inch every 10 feet of length. To determine slope in your yard: Mark 2 wooden stakes at 1-inch intervals. Drive stake A into the ground at the point where you wish to begin your drain.
What do I need for a trench drain?
To install a trench drain, you’ll need to create a trench for the drain to fit into. This may involve cutting and removing concrete, asphalt or other hard surfaces, digging a trench into turf or gravel and then placing the drainage elements.
What are the different sizes of trench drain systems?
Replaces All Previous Price Lists 1 PERMA-TRENCH® Z886 6″ WIDE TRENCH DRAIN SYSTEM 2 Z882 12″ WIDE TRENCH DRAIN SYSTEM 4 Z874-12 TRENCH DRAIN SYSTEM 5 Z874-18 TRENCH DRAIN SYSTEM 6 Z874-21 TRENCH DRAIN SYSTEM 7 Z874-U-XX-LDRA LIGHT-DUTY UTILITY TRENCH WITH ALUMINUM FRAME, CLAMP, AND SOLID COVER 8
What is dead level trench drain?
The Dead Level ® Trench Drain is uniquely designed to install and perform like no other trench drain system. Its pre-sloped, original design, innovative features, and durable construction combine to create a drain that delivers efficient installations with straight, level runs and stable, long-term, warranted performance.
What are the different sizes of Perma-trench® products?
1 PERMA-TRENCH® Z886 6″ WIDE TRENCH DRAIN SYSTEM 2 Z882 12″ WIDE TRENCH DRAIN SYSTEM 4 Z874-12 TRENCH DRAIN SYSTEM 5 Z874-18 TRENCH DRAIN SYSTEM 6 Z874-21 TRENCH DRAIN SYSTEM 7 Z874-U-XX-LDRA LIGHT-DUTY UTILITY TRENCH WITH ALUMINUM FRAME, CLAMP, AND SOLID COVER 8
Why choose Zurn’s trench drains?
Our Trench Drain System provides lean construction options allowing you to save time, money, and resources on the job. Zurn’s Linear Trench Drains are engineered to deliver structural strength, while being lightweight.