Taking the “P” Out of Splash-Back

Re-Inventing Public Sanitation Solutions

Sam Rabb, Jim McLaughlinENGN1000- Brown University

Proposal PresentationFebruary 17, 2011

The Problem• Existing surfaces of male restroom fixtures do

not achieve desired level of sanitation

Background: “Virtually No Splash” Solutions- Part 1

• Pros– Inexpensive

• Cons– NOT effective– Not efficient

Background: “Virtually No Splash” Solutions- Part 2

• Pros– Simple and inexpensive

• Cons– User reliant– Not very effective

Background: Waterless “Clean/Green” Solution

• Pros– Green

• Cons– Clean?– Expensive

Background: Anti-Splash Backguard

• Pros– Inexpensive– Easily integrated

• Cons– Hard to clean– Replaced often– Costs add up

Our Proposed Solution

• A stand-alone urinal that eliminates splash-back via improved geometry and materials

Engineering Theory

• Understand and model fluid impact and flow• Understand and utilize fluid interaction with

various materials

Engineering Technology

• Stators/Vanes• Materials

Engineering Design

• Splash must be eliminated• Ergonomics must be maintained• Maintenance requirements/Water usage must

be optimized over each iteration