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  Saturday, 16 May 2026
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Dear Land F/X Development Team,

I would like to propose the addition of integrated irrigation drainage system design features within Irrigation F/X.

As irrigation designers, many of our landscape projects require not only irrigation layouts, but also coordinated drainage systems to manage excess water, planter drainage, and stormwater collection. Currently, these drainage components need to be drafted manually outside the Irrigation F/X workflow.

It would be extremely valuable if Irrigation F/X could include dedicated drainage tools and workflows for the following systems:

• DWC / HDPE perforated drainage pipe systems for lawn and landscape drainage
• French drain systems with gravel trench details
• Planter box drainage systems including drain cells, drainage boards, and outlet piping
• Slot drains, trench drains, and catch basins
• Subsurface drainage networks connected to storm systems
• Drainage pipe sizing and slope calculation tools
• Automatic drainage schedules and pipe labeling
• Drainage-specific symbols, blocks, and details
• Coordination between irrigation zones and drainage areas
• Hydraulic calculations for drainage flow capacity

Suggested features could include:

• Drainage pipe libraries (PVC, HDPE corrugated, perforated pipe, geotextile systems, etc.)
• Drain cell and geocomposite drainage assemblies
• Automatic slope annotation and invert elevation tools
• Drainage layout verification similar to irrigation pipe verification
• Drainage schedule generation and quantity takeoff
• Integration with planting areas, hardscape runoff, and irrigation runoff management

This addition would make Irrigation F/X a much more complete landscape water management platform, especially for projects involving podium landscapes, rooftop gardens, sports fields, villas, parks, and urban developments.

Many landscape irrigation consultants currently design irrigation and drainage together, so having a unified workflow inside Land F/X would greatly improve efficiency and coordination.

Thank you for considering this feature request.

regards,
Shin Thant
Shin,

We have stayed away from developing a drainage system for a few reasons. Here in the US, drainage plans are typically done by the Civil Engineer, not the irrigation designer, and as such Civil3D is a quite capable platform for doing so. We haven't felt the need to engineer a less-than-capable competitor to C3D.
Although your examples are spot on, and there are certainly plenty of landscape architects that do drainage plans. The issue is, the ones we have talked to do not associate it with irrigation, and do not want to pay for an irrigation license in order to do drainage.
The common thread we've seen over the years, is people wanting us to engineer a drainage module, but not have to pay any more money for it. So overall, it doesn't quite feel worth the engineering expense.
But it's been quite a while since drainage has come up on this forum, I'd be interested to gauge interest from other users as well, to see if there might be a value to implementing some of that capability.

--J
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