Drainage systems are engineered solutions for managing water flow, preventing accumulation, and protecting infrastructure through controlled collection and disposal of surface and subsurface water.

System Types

Type	Application	Purpose
Surface	Open channels/swales	Visible water management
Subsurface	Underground pipes	Hidden water removal
French Drains	Perforated pipes	Groundwater control
Storm Drains	Large capacity	Heavy flow management
Bio-retention	Environmental	Sustainable drainage

Design Parameters

Component	Specification	Consideration
Gradient	Min 1:100	Flow efficiency
Pipe Size	Site-specific	Capacity needs
Materials	PVC/HDPE/Concrete	Durability
Access Points	Every 30m typical	Maintenance
Capacity	Peak flow + 20%	Safety margin

Critical Elements

Key factors include:
. Catchment analysis
. Flow calculations
. Ground conditions
. Environmental impact
. Maintenance access
. Future capacity

Implementation Requirements

Essential measures:
. Proper grading
. Material selection
. Installation quality
. System integration
. Regular inspection
. Maintenance planning