As the project progressed, its focus shifted from proposing a prototype to sparking ideas for clean water access in Ifakara, Tanzania, and beyond. With only 50% of Tanzanians having safe water access and 34% with improved sanitation, addressing water needs is vital. Enhanced rainwater harvesting systems emerge as a solution. The innovative hexagonal brick assembly raises the question: Can water systems merge with structures? Could walls collect, shield, and filter water safely? Shared rainwater harvesting walls within communities offer a decentralized, cost-effective solution, unlike exclusive individual systems. These stations, as community infrastructure, improve health, accessibility, and resource utilization, setting a precedent for decentralized initiatives.
Initial structural testing employed a hydraulic press to assess a brick’s load-bearing capacity. With a surface area of 6.99in², each brick could withstand approximately 2,740 PSI. Thermally, water flowing through the wall could cool the building. During a three-hour sun exposure, two prototype bricks reached around 35°C. Pouring water through the structure for five minutes resulted in a 10-degree temperature drop. Additionally, the air gap in the brick wall facilitates airflow, aiding in cooling as colder air circulates through and exits the top. Despite maintenance concerns with encasing piped networks in concrete or brick walls, this introductory concept paves the way for implementing passive water systems to cool buildings before storage for usage. Filtered rainwater could serve sinks, showers, or even as potable water.