Plumbing Design & Drawings —
Water, Drainage & Sanitation
Cold water, hot water, sanitary drainage, and roof drainage system design with pipe sizing calculations and full AutoCAD layout drawings — delivered remotely worldwide.
Complete Building Plumbing Design Service
Our plumbing design service covers every element of a building's water supply, hot water generation, and sanitary drainage — from the incoming supply main to the final fixture connection. We size pipes, produce layout drawings, and deliver full documentation suitable for authority submission and contractor tendering.
Green Power Corporation has designed and installed plumbing systems in hospitals, pharmaceutical plants, hotels, commercial towers, and food-service chains across Pakistan — the same 30 years of operational experience that informs every remote design we produce.
Plumbing Systems We Design
- Cold water supply and distribution
- Domestic hot water (solar, gas, electric)
- Hot water circulation and trace heating
- Sanitary drainage — soil and waste stacks
- Roof and balcony rainwater drainage
- Grease interceptors and grease traps
- Water storage tank sizing and design
- Booster pump systems
- Irrigation and landscape supply
- Medical gas identification (coordination)
What's Included in a Plumbing Design Package
Pipe Sizing Calculations
Loading unit calculations per BS EN 806 / CIBSE Guide G for water supply; discharge unit calculations per BS EN 12056 for drainage.
Cold & Hot Water Layout Plans
AutoCAD layout plans showing cold and hot water pipe routes, sizes, and isolation valve positions on each floor.
Sanitary Drainage Plans
Soil and waste pipe layouts, stack positions, inspection chambers, and connection points shown on floor plans and in section.
Riser & Schematic Diagrams
Cold water, hot water, and drainage riser diagrams showing vertical distribution and connections per floor.
Water Storage & Pump Sizing
Storage tank capacity sizing based on daily demand and supply frequency, plus booster pump selection and specification.
Equipment & Fixture Schedule
Complete fixture schedule, water heater specifications, and equipment data sheets for procurement and tendering.
Plumbing Designs Built on 30 Years of Site Delivery
Plumbing that looks right on paper but is uninstallable on site costs contractors time and money. Our engineers have routed and installed plumbing systems in hospitals where infection-control drainage routing is critical, pharmaceutical plants where cross-contamination risks require special drainage, and commercial kitchens where grease trap sizing is non-negotiable.
That hands-on experience translates into remote designs that are coordinated, buildable, and free of the common errors that result in expensive on-site redesign.
Request a Plumbing Design Quote →Inputs We Need
Architectural floor plans · Number of fixtures per floor · Building location · Water supply pressure (if known) · Applicable standard or local authority
Standards Applied
BS EN 806 · BS EN 12056 · CIBSE Guide G · ASHRAE Plumbing Engineering Design Guide · UAE / local authority requirements
Typical Turnaround
Single-floor layout: 2–4 days · Full building package: 5–10 days · Timeline confirmed at quote stage
Request Your Plumbing Design Quote
Send us your floor plans and fixture schedule. We'll respond with a fixed fee and timeline within 24 hours.