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Engineer a Sustainable Water Supply


A number of western states, including California, have faced unprecedented water challenges over the last several years.

Your challenge is to design a solution to help conserve and/or collect this precious natural resource for the average homeowner (for example, designing a device to collect rainwater or designing a showerhead that conserves water).

The goal of the challenge is to create an original and unique way to conserve and collect water for the average homeowner in drought-challenged regions like California.

With the many new 3D printing manufacturing techniques, there are no restrictions on part manufacturability. This opens up a new world for organic and complex part shapes that could not be machined or molded from plastic with traditional manufacturing methods. Additionally, designs that had to be created as multiple parts for traditional manufacturing purposes can now be single parts that can be 3D printed.

With new generative design technology there is an easy way to optimize and transform traditional designs or otherwise prismatic parts into beautiful, unique and functional components. Optimization is also a way to reduce the strain on the environment by using less material and producing less waste.

Your final design should contain at least one (1) component that can ONLY be manufactured using 3D printing.

Extra credits will be given to designs that are also optimized to save material without compromising integrity.

The winning designs will be printed, courtesy of Stratasys, at E-Fest West on March 24, 2018 at Fairplex, Pomona, CA.


1st place: $250 + 1 Year Subscription to Solid Edge + 1 Free E-Fest West registration pass + winning 3D printed model

2nd place: $150

3rd place: $75


  • Judging Criteria:
    1. Is this design unique and creative? (test with internet searches)
    2. Is there at least one component of the design engineered for Additive Manufacturing (3D Printing)? The design should ONLY be able to be manufactured by a 3D printer.
    3. Is at least one component optimized for less material without compromising strength and functionality? Entry should include four (4) images as described.
    (Extra credit given for using Generative Design in Solid Edge)
    4. Description of material reduction: EX. Percentage of material saved
    5. Report of how the design will help to solve the problem

  • Submission File Formats:

    Native Solid Edge Part File for additional points
    STEP file of the CAD model
    BMP, JPG or PNG images of the optimized design from Top, Front and Side as well as a 3D pictorial view *
    Mass reduction report
    Word Document of description of the solution

    *The winning design file will be converted for printing.

  • Technical Requirements:

    1. Native Solid Edge files earn bonus points

    To Download a free version of Solid Edge for this challenge, visit:

    Solid Edge Free Software

    2. CAD must be capable of exporting a Step (STP) file if not using Solid Edge

    3. Photo realistic renderings (KeyShot comes with every Solid Edge download)

    4. Size of 3D printer bed – 10” x 10” x 10” (design may be scaled for 3D printing)

    BONUS POINTS for using Generative Design topology optimization to reduce weight, as well as make it an organic aesthetically pleasing shape. Check out this informative tutorial for more information: Generative Design - Topology Optimization



    The Challenge is open to everyone except employees and families of GrabCAD and the Sponsor. Multiple entries are welcome. Team entries are welcome.

    By entering the Challenge you:
    1. Accept the official GrabCAD Challenges Terms & Conditions.
    2. Agree to be bound by the decisions of the judges (Jury).
    3. Warrant that you are eligible to participate.
    4. Warrant that the submission is your original work.
    5. Warrant, to the best of your knowledge, your work is not, and has not been in production or otherwise previously published or exhibited.
    6. Warrant neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trademark, copyright or any other intellectual property right) of any other person.
    7. Warrant participation shall not constitute employment, assignment or offer of employment or assignment.
    8. Are not entitled to any compensation or reimbursement for any costs.
    9. Agree the Sponsor and GrabCAD have the right to promote all entries.
    If you think an entry may infringe on existing copyrighted materials, please email challenges@grabcad.com.

  • SUBMITTING AN ENTRY Only entries uploaded to GrabCAD through the "Submit entry" button on this Challenge page will be considered an entry. Only public entries are eligible. We encourage teams to use GrabCAD Workbench for developing their entries. Entries are automatically given the tag "asmewatersupply" when uploading to GrabCAD. Please do not edit or delete this tag. Only entries with valid tag will participate in the Challenge.

  • AWARDING THE WINNERS The sum of the Awards is the total gross amount of the reward. The awarded participant is solely liable for the payment of all taxes, duties and other similar measures if imposed on the reward pursuant to the legislation of the country of his/her residence, domicile, citizenship, workplace, or any other criterion of similar nature. Only 1 award per person. Prizes may not be transferred or exchanged. All winners will be contacted by the GrabCAD staff to get their contact information and any other information needed to get the prize to them. Payment of cash awards is made through PayPal. All team awards will be transferred to the member who entered the Challenge.

  • We will release the finalists before the announcement of the winners to give the Community an opportunity to share their favorites in the comments, discuss concerns, and allow time for any testing or analysis by the Jury. The Jury will take the feedback into consideration when picking the winners.

  • Winning designs will be chosen based on the Rules and Requirements.

  • This Challenge ends on March 9th, 2018 (17:00 EST.) Finalists will be announced March 14th, 2018 Winners will be announced March 19th, 2018.

About the jury?

GrabCAD, Stratasys, and Siemens Solid Edge Software.

About ASME's E-Fests

ASME’s E-Fest “Engineer a Sustainable Water Supply” Additive Manufacturing Challenge:

As part of ASME’s E-Fest events, you are invited to go beyond the classroom or laboratory and put your engineering design principles to the test by applying them in ASME hosted student competitions.

E-Fests, or engineering festivals, are WAY more than just a series of events. It’s a movement driven by engineering students that has gained force globally. These year-round programs empower engineering students like YOU to ignite innovation, build your resume, expand your knowledge, participate in stimulating competitions, jumpstart your career and most importantly, celebrate engineering

ASME’s E-Fest “Engineer a Sustainable Water Supply” Additive Manufacturing challenge is also sponsored by GrabCAD, Stratasys, and Siemens Solid Edge Software.


  • Fahad Rafi

    Fahad Rafi 4 months ago

    What can't you build canals and lead them to reservoirs?

    Fahad Rafi has uploaded 236 CAD models & has left 437 comments.
  • Tim Studer

    Tim Studer 4 months ago

    I have a question.

    How big is the house of an average homeowner in drought-challenged regions? Because I have seen multiple entries that just show a 5 by 5 metre square hut and that's probably not the size of the houses these water supply systems would be installed in, right?
    I also have already searched through various websites to find graphs on how much rain falls in different months and/or years, but haven't been able to find any useful information. Can someone who lives there or knows a good website tell me how much rain falls in different periods of time?


    Tim Studer

    Tim Studer has uploaded 0 CAD models & has left 15 comments.
  • wasif

    wasif 4 months ago

    5 x 5 meter just example of a unit you can multiply it at the area that you need it

    wasif has uploaded 165 CAD models & has left 299 comments.
  • wasif

    wasif 4 months ago

    My question is if there is a snow it may be close the water holes and if the building roof is flat it will accumulate the snow

    wasif has uploaded 165 CAD models & has left 299 comments.
  • Matt Firmani

    Matt Firmani 3 months ago

    Hey everyone,

    The winners for the "Engineer a Sustainable Water Supply" challenge have been chosen! Please head over to the results page to take a look, and offer your congratulations to Alfonso Cerdeno, Juan Ignacio Garcia Yncera, Fred Co., and all of the other finalists. Thanks again to everyone who participated, and we look forward to seeing you at our next Challenge.

    If you have any questions, please let me know here in the comments. And if you are one of the three winners, please direct-message me for more information on your prize winnings.

    Matt Firmani has uploaded 3 CAD models & has left 21 comments.
  • wasif

    wasif 3 months ago

    Congrats to all the winner's it was a cool challenge i like it so much

    wasif has uploaded 165 CAD models & has left 299 comments.
  • Mary Miller

    Mary Miller about 2 months ago

    With new generative design technology there is an easy way to optimize and transform traditional designs or otherwise prismatic parts into beautiful, unique and functional components. Optimization is also a way to reduce the strain on the environment by using less material and producing less waste. kissmanga https://kissmangalist.com read thoudsands of high-quality manga

    Mary Miller has uploaded 0 CAD models & has left 2 comments.
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