THE GREENFILL

Mohamed Noeman

Project idea

The project transforms a neglected drainage canal corridor (Rashah) in Helwan, Greater Cairo, Egypt into a Waste Management Community Park that simultaneously addresses environmental, social and urban challenges. Originally serving nearby agricultural lands, the Rashah lost its function due to informal urban expansion and the disappearance of surrounding farmland. As a result, residents gradually began using it as an open dumping ground for household waste, often burning garbage on-site, creating severe environmental and public health issues.
The proposal reimagines this undesirable problematic space as a community asset. It provides a structured waste disposal and collection system while introducing much needed public open space within a dense informal settlement lacking recreational areas. The project changes the perception of waste from an urban burden into an opportunity for environmental improvement, education and community engagement. Through the integration of landscape, public communal facilities and waste management infrastructure, the project creates a healthier, more livable and approachable environment for local residents.

Project description

Located in the Rashah area of Helwan, the project addresses the environmental and social consequences of uncontrolled waste disposal within a dense informal settlement. The former agricultural drainage canal became an open dumping ground where residents dispose of and burn household waste, creating unpleasant odors, visual pollution, health risks and a barrier between neighborhoods. The project seeks to reverse this condition by transforming a place people avoid into a place people actively choose to visit, interact with and benefit from while still solving the waste disposal problem.
The proposal combines waste management infrastructure, public open space and community services within a single integrated intervention. Rather than concealing waste operations, the design incorporates them into the architectural experience through a series of vertical landmark towers distributed throughout the site. Residents descend in pedestrian ramps from street level to these towers and deposit household waste through multiple disposal points inside the tower. The waste is collected in underground storage pits beneath each tower before being transferred through service ramps and routes to garbage collection areas in basement level used for loading trash bins onto service trucks, which then transport it off-site to recycling and treatment facilities. This system preserves the familiar disposal behavior of residents while replacing informal dumping with an organized and hygienic process.
The towers extend beyond their infrastructural role to become environmental and social spaces. Designed as open vertical void aromatic planted courtyards, they combine reinforced concrete structures with lightweight steel frameworks that support planter boxes, elevated walkways, mesh screens and climbing vegetation. Aromatic planting helps improve air quality and creates a sensory contrast to the site's previous condition. Visitors can move through the towers via stairs and catwalks, engaging with planting workshops and educational activities before reaching the elevated park level above. The towers therefore act simultaneously as waste collection points, environmental filters, circulation nodes and visual landmarks that give identity to the project.
Above the operational layers, the project creates a continuous public park that serves as a much-needed open space for the surrounding community. The landscape incorporates gathering areas, kids play areas, outdoor planting areas planted with aromatic and flowering species. Community facilities are integrated throughout the project, including classrooms, a library, a multipurpose hall, flexible workshops, planting workshops, social support spaces, awareness exhibition areas, a market zone, co-working and learning spaces and dedicated areas for children and families.
Through the integration of landscape, Architecture and environmental infrastructure, the project redefines the relationship between the community and waste. What was once a source of pollution, unpleasant odors and environmental degradation become a vibrant communal destination that promotes education, social interaction environmental awareness and community well-being.

Technical information

The project is constructed using reinforced concrete flat-slab structural system. The waste collection towers are designed as reinforced concrete structures with ring beams, complemented by secondary lightweight steel structures are attached to the concrete frame with plates and bolts to support the vertical vegetation systems. These include steel catwalks, mesh screens and steel planter boxes.
Waste management is organized through a multi-level system. Residents dispose of household waste at designated drop-off points inside the towers at basement level after descending in pedestrian ramps where waste is stored into extending RC pits allowing waste to accumulate beneath each tower. From these pits, access openings allow waste to be directly dropped into the bins positioned in the basement service zone. Trash bins are then moved through controlled service ramps and routes to centralized collection areas, where it is loaded onto service vehicles. Dedicated trucks access the basement level via service ramps, where they are loaded with trash bins and then leave the site toward external recycling and processing facilities.
The irrigation system serves both the park and the vertical towers through a network of wet pipes fed by underground water storage tanks and pump rooms. Water is pumped from the basement to roof level valve control boxes, from which it is distributed into a zoned irrigation network. In the park, irrigation is divided between sprinkler systems and drip irrigation depending on planting areas, while the sloped landscape allows water to move efficiently through gravity along different levels without the need for continuous pumping. Within the towers, water is similarly distributed from the upper valve system and then descends through a gravity-fed piping network to each floor, supplying steel planter boxes and vertical planting systems. The planting strategy incorporates native and aromatic species, including Ficus Benjamina trees, rosemary, lavender and flowering shrubs. Human Scale trees are planted in elevated soil beds supported by beams, ensuring adequate soil depth while maintaining usable clear height beneath.
The project combines environmental infrastructure, landscape architecture and community facilities within a multi-level design that responds to the site's main problem and existing urban conditions, creating a sustainable model for reclaiming neglected infrastructure within informal urban settlements.