A storm water drain system on a campus plays a crucial role in managing rainwater and preventing flooding, erosion, and waterlogging. In architectural design, it involves strategically planning and integrating channels, gutters, and underground pipes to efficiently collect and direct rainwater away from buildings, pathways, and open spaces.
The system often incorporates sustainable practices such as permeable pavements, bioswales, and rain gardens to enhance groundwater recharge and reduce runoff. Proper slope design, site grading, and the use of catch basins ensure smooth water flow while minimizing structural damage and maintaining the aesthetic appeal of the landscape.
A well-designed storm water drain system not only addresses functionality but also harmonizes with the campus’s environmental and visual context, contributing to a resilient and eco-friendly built environment.
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Storm water drain detail drawing – 1
A storm water drain detail in construction involves several key components to ensure proper collection and discharge of rainwater. Here’s a textual description of the typical layers and elements involved:
Trench Excavation:
- Excavate the ground to the required depth, ensuring proper slope (typically 1–2% gradient) for smooth water flow.
- Compact the base to provide a stable foundation.
Base Layer:
- Lay a compacted gravel or crushed stone layer (100–150 mm thick) to support the drain and facilitate percolation.
- Optionally, add a layer of concrete (M15 grade) as a blinding layer for additional support.
Drain Body:
- Construct sidewalls using brick masonry, stone masonry, or reinforced concrete (RC) depending on load conditions.
- Typical wall thickness: 150–300 mm.
- Provide a smooth plaster finish inside to reduce friction and prevent debris buildup.
Drain Bed:
- Cast a reinforced concrete base slab (150–200 mm thick) with proper slope toward the outlet.
- Install reinforcement bars (8–12 mm diameter) at appropriate spacing if structural loads are expected.
Inlet and Outlet Points:
- Integrate catch pits or inlets at regular intervals (every 20–30 meters) to collect water from surrounding areas.
- Connect the main drain to a larger municipal stormwater system or natural discharge point.
Grating and Cover:
- Provide a cast iron or galvanized steel grating on top for safety and to prevent debris from entering.
- Use removable precast concrete slabs for periodic cleaning and maintenance.
Final Touches:
- Backfill around the drain with compacted soil or gravel to stabilize the structure.
- Ensure surrounding ground is sloped towards the drain for effective surface water collection.
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