Sustainable Bamboo Greenhouse with Integrated Rainwater Harvesting System

This work presents a novel bamboo greenhouse with integrated rainwater harvesting (RWH) to sustainably address water scarcity and food insecurity in vulnerable communities. The “Juciri”-like structure features a unique hexagonal geometry and sloped roof to maximize rainwater capture and optimize cultivation space. Structural analyses compared bamboo (Guadua angustifolia) and galvanized steel as construction materials. Results show bamboo, with a dead load of 72.27 kg, provides adequate structural performance under loads, with a maximum displacement of 0.77 cm-closely matching steel but with significantly lower weight and cost. Showing a relative flexibility index for bending moments of 11.90% and a 45.42% less cost in front of galvanized steel. Environmental assessments using Life Cycle Assessment focused on Global Warming Potential (GWP100), Acidification Potential (AP), and Ozone Depletion Potential (ODP). The bamboo structure's GWP was 3.80 kg CO2-eq, over 95% lower than steel's 87.97 kg CO2-eq. The RWH system collects up to <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$23.3 \mathrm{L}/\mathrm{m}^{2}$</tex> per month from its <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$17.67 \mathrm{m}^{2}$</tex> area, ensuring reliable irrigation. Clay pot irrigation improves water efficiency by delivering moisture directly to roots, reducing evaporation and eliminating PVC use. Locally sourced bamboo minimizes environmental impacts and fosters community self-reliance through job creation. Its lightweight, cost-effective design enables self-construction and scalability to various regions. This approach offers a sustainable solution to enhance food and water security, strengthening vulnerable communities against climate change.