Design of a Modular Selective Graywater Harvesting & Foundation-Shielded Irrigation Syste Blind

in CAD Design held by ghanima
Contest Ended, The buyer is selecting the winner(s).
  • Open
  • Choosing Finalist
  • Ended
Description:
1. Project Purpose (The "Why"):
The objective is to create a standardized Shop Drawing for a sustainable building utility that bridges the gap between residential plumbing and landscape irrigation. The system is designed to capture high-quality graywater (specifically from sinks and showers), filter out contaminants (like soap and foam), and deliver it to a specialized, fully encapsulated planting basin. A core priority of the design is Structural Integrity, ensuring that irrigation water is strictly contained to prevent any seepage into building foundations or basements.

2. System Architecture (The "How"):
The project consists of three integrated stages that must be clearly drafted:

Stage A: Selective Source Collection: A dual-track plumbing layout where graywater from specific fixtures (e.g., 3 Sinks, 3 Showers) is isolated from the blackwater (sewage) line during the construction phase.

Stage B: The Smart Control Hub [SC]: A centralized mechanical/electronic node where water quality is assessed. This hub includes a 3-way diversion valve to either direct clean water to the basin or reject soapy/contaminated water to the main sewage line.

Stage C: The Encapsulated Growth Basin: A 2000mm x 2000mm sub-surface planting zone. It is characterized by a 1000-micron Polyethylene Liner [PL] that provides 360-degree isolation from the surrounding soil. Inside, an Engineered Sponge [ES] medium retains moisture, delivered via a Perforated Injection Pipe [P-INJ].

3. Scope of Work for the Designer:
The designer is required to produce a Typical Installation Detail (Modular Design) that includes:

Plan View: Showing the convergence of graywater lines into the Smart Hub.

Cross-Section Detail: A 1:20 scale vertical section of the basin showing the liner, the sponge layers, and the injection point.

Mechanical Schematic: A detail of the [SC] Hub connections (Inlet, Irrigation Outlet, Overflow/Waste Outlet).

Technical Annotations: Detailed notes on material specifications (Liner thickness, pipe gradients, and scalability).

4. Key Technical Constraints:
Zero Seepage: The design must demonstrate a leak-proof interface where the injection pipe penetrates the Polyethylene Liner.

Scalability: The design logic must be applicable to various building heights and land sizes without changing the core mechanical principles.

Maintenance Access: The [SC] Hub must be positioned for easy sensor calibration and valve maintenance.
Wants:
Competition Evaluation Criteria (100-Point Scale)
1. Technical Logic & Fluid Dynamics (30 Points)
Separation Efficiency: How effectively does the design isolate the Graywater [GW] sources (Sinks/Showers) from the Blackwater [BW] stack?

Flow Management: Does the piping layout maintain a standard 1–2% gradient? Is the gravity flow to the Smart Control Hub [SC] clearly defined?

Modular Versatility: Does the design work as a "Standard Detail" that can be easily integrated into different building layouts?

2. Structural Protection & Waterproofing (30 Points)
Containment Integrity: Does the 1000-micron Polyethylene Liner [PL] provide a complete, continuous barrier (360-degree encapsulation) of the basin?

Penetration Detailing: Is there a professional call-out detail showing the waterproof seal/gland where the pipe enters the liner? (Critical for preventing seepage toward the foundation).

Isolation of Risk: Does the drawing confirm that the moisture zone is strictly limited to the basin area, away from the structural footprint?

3. Mechanical Layout of the Control Hub [SC] (20 Points)
Internal Configuration: Does the hub provide adequate space for the 3-way diversion valve and the quality-testing sensors?

Diversion Logic: Is the overflow path to the main sewage line clearly mapped for rejected (high-contamination) water cycles?

4. Drafting Standards & Shop Drawing Quality (20 Points)
Section Detail (1:20): Is the vertical cross-section of the 2000mm basin accurate, showing the correct placement of the Engineered Sponge [ES] and Injector [P-INJ]?

Annotation & Legend: Correct and consistent use of the mandatory technical symbols (GW, BW, SC, PL, ES, P-INJ).

Technical Notes: Inclusion of clear, professional notes regarding scalability, material specs, and installation standards.
Don't Wants:
Here are the technical red flags and "Fail Criteria" for this specific system:

1. Violation of the "Zero-Seepage" Rule
What fails: If the designer shows the pipe entering the Polyethylene Liner [PL] without a specific waterproof seal, flange, or gasket detail.

Why it's a fail: Without a professional penetration detail, water will leak out of the basin, defeating the entire purpose of "Foundation Protection."

2. Lack of "Gravity Logic"
What fails: If the piping from the sinks/showers to the Smart Hub [SC] is shown at an impossible angle or requires a pump when gravity could have been used.

Why it's a fail: It increases the building's cost and maintenance. A good design uses a 1–2% slope and smart routing to keep the system passive and inexpensive.

3. Ignoring the "Overflow" Path
What fails: If the Smart Hub [SC] only has an "In" and an "Out to Basin" but lacks a third path to the main sewage line.

Why it's a fail: This is the "Soap problem" you identified. If the water is too soapy, it must have a place to go. If there is no Overflow [OF] line, the soapy water will ruin the Engineered Sponge [ES] and the tree.

4. "Specific" instead of "Modular" Design
What fails: If the designer gets stuck asking for your exact floor plan or room dimensions instead of creating a "Typical Detail."

Why it's a fail: You need a system that can be dropped into any project (Scalability). A designer who can't think in terms of a "Modular Unit" isn't providing the engineering value you need for your broader project.

5. Incorrect Basin Depth/Diameter
What fails: Any design that alters the 2000mm x 2000mm standard without a clear engineering justification.

Why it's a fail: This volume is calculated for the root zone of a tree (like your palms). Changing it without logic disrupts the hydration balance.

6. Inadequate Legend Usage
What fails: Using non-standard symbols or ignoring the assigned tags (GW, BW, SC, PL, ES, P-INJ).

Why it's a fail: Professionalism and clarity. If a contractor or a technical reviewer can't read the legend instantly, the shop drawing is useless for execution.

Entries

= Buyer's Rating
#5 V2-Modular Selective Graywater Harvesting & Foundation-Shielded Irrigation System by alirezaemamian
#4 Modular Graywater Smart Irrigation System by adnan313
#3 Modular Selective Graywater Harvesting & Foundation-Shielded Irrigation System by hortensia
#2 Modular Selective Graywater Harvesting & Foundation-Shielded Irrigation System by alirezaemamian
#1 Modular Selective Graywater Harvesting & Foundation-Shielded Irrigation System – Executable Engineering Package by ShivamChauhan
Hidden design

Discussion

Tue, 03 Mar 2026 13:26:42 +0000
Well it seems like time is being cut short on this side and I want to thank you for the opportunity to build something that is for the betterment of the residential community and hope that you get to try out our software very soon, Here are the links to the software for you to use at your own disposal and free of charge, My apology for not having the drawings and bill of materials uploaded in time... Til next time!

https://aquaflo-pro.replit.app
https://aquaflo-pro.base44.app
Tue, 03 Mar 2026 13:03:14 +0000
Dear Buyer,
Greetings to You; My name is Daniel Clayton Fowler; My team and I have been working on this project since the very first hour that you posted it. We have a package that includes not only the desired technical drawing and bill of materials, but also a robust software that could be the next architect's tool that has been designed with you specifically in mind as the inspiration and is being implemented especially for this competition as I type this message for you. To make a long story short I am simply asking for an extension to the deadline as we would be devastated if our design were not able to be submitted to this competition. I am not asking for much more than six hours from this very minute for my team and I to have the final package uploaded and ready for your reviewal. Can you please help?

Sincerely,
-Daniel F.

ShivamChauhan

Designer

Wed, 18 Feb 2026 20:57:01 +0000
Thank you for the detailed technical guidance.
An updated revision including a dedicated Soil Moisture Sensor within the ES layer and a detailed Maintenance Hatch section will be submitted shortly to ensure full execution clarity and zero on-site ambiguity.

ghanima

Buyer

Wed, 18 Feb 2026 07:00:59 +0000
eneral Announcement to All Contestants
"I would like to express my appreciation for the initial entries, especially those focusing on the Modular Logic and Foundation Protection. To ensure we reach the highest level of technical maturity for this Standard Installation System, please focus on the following details in your upcoming submissions:
* Maintenance Accessibility: The Smart Control Hub [SC] must feature a clear Access Hatch detail for periodic sensor calibration and valve maintenance.
* Basin Intelligence: Include the positioning of a Soil Moisture Sensor within the Engineered Sponge (ES) layer, with a designated conduit leading back to the [SC] unit.
* Liner Sealing Details: High marks will be given to designs that provide a professional, leak-proof detail for where the P-INJ pipe penetrates the 1000-micron PL Liner.
We are looking for a complete Shop Drawing package that leaves zero room for error during on-site execution. Good luck to everyone!"
Tue, 17 Feb 2026 18:04:39 +0000
The workload seems huge for this contest fee

ghanima

Buyer

Tue, 17 Feb 2026 11:16:12 +0000
I appreciate your professional observation. While the concept might appear simple to a skilled eye, the 'Value' we are offering is for a Fully Executable Engineering Package, not just a concept.
To win this contest, the designer must demonstrate:
* Liability & Foundation Protection: We are paying for a design that guarantees no moisture reaches the structural foundations through a perfectly detailed 1000-micron PL Liner system.
* Industrial Application Readiness: The drawings must be in a format that we can hand over to a contractor immediately (Shop Drawings).
* System Integration: How the [SC] Smart Hub interacts with both the plumbing and the encapsulated basin as a single, flawless ecosystem.
If you believe you can provide this level of Technical Detail and Reliability, the prize is a fair reflection of that expertise. We are investing in a solution that will be implemented across multiple high-value projects."
Tue, 17 Feb 2026 09:15:04 +0000
Are you really sure you don't have anything else to ask for with the huge sum offered to potential contest winners? Don't invest too much, otherwise you'll go over your company's budget.

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