meu 4/29 (2)

Subdecks (2)

Cards (111)

  • PLUMBING/WATER SYSTEM TOPIC OUTLINE
    • STORM WATER
    • STORM SEWERS
    • ROOF DRAINAGE DESIGN
    • SURFACE DRAINAGE DESIGN
    • SURFACE DRAINAGE DESIGN SYTEM
    • STORM WATER DRAINAGE SYSTEM
    • INSTALLATION
  • Storm water
    Also known as runoff or rainwater, collects pollutants such as oil, fertilizer, and pesticides as it flows over land
  • Proper management of storm water is crucial to prevent contamination of water sources and mitigate potential damage to buildings
  • Recurrence intervals
    The statistical estimation of the probability of precipitation events
  • Recurrence intervals
    • 1 in 50 chance of 5.0 in of rain in a 24-hr period
    • Rainfall total of 5.0 in during a consecutive 24-hr period has a 50-year recurrence interval
  • Storm water systems are typically designed to handle storm water from a specific precipitation event, typically based on a recurrence interval of 100 or 500 years
  • Importance of proper stormwater management
    • Environmental protection
    • Infrastructure resilience
    • Regulatory compliance
  • Storm sewers
    Drains that carry surface water runoff from rain, melting snow, and overflow from lawn water
  • Storm sewers convey runoff to water bodies such as catch basins, rivers and lakes
  • Storm sewer components
    Above-ground drain at street-level, just below the sidewalk line, and the reservoir piping/tunneling beneath it that carries the water elsewhere
  • Private storm sewers
    A network of pipes, catch basins, and other components that collect and drain rainwater away from homes and businesses
  • Private storm sewers
    • Help to prevent flooding, erosion, and water damage
    • Typically the responsibility of the homeowner or property owner
    • Regular maintenance is important to ensure proper function
  • Combined community storm sewers
    Single pipe system that combines sanitary sewage and stormwater runoff
  • Combined community storm sewers
    • Cost-effective to build
    • May overflow during heavy rain
    • Maintenance challenges
  • Separate community storm sewers
    Two pipe network with separate sanitary sewers and storm drains
  • Separate community storm sewers
    • Reduced pollution
    • Higher upfront costs
    • Long-term benefits
  • Roof drain system
    Consists of roof drains, vertical storm drain pipes (leaders or conductors), and horizontal storm drain
  • Roof drain systems are designed for draining storm water from low-sloped (essentially flat) roofs
  • Downspouts are vertical storm drain pipes secured to the building exterior, with a concrete or plastic pad (splashblock) to prevent soil erosion
  • In locations where the leaders/downspouts can be tied into the sewage system, the system is referred to as a combined sewer
  • Roof drain systems are commonly placed on low sloped (flat) roofs with at least a 1/4 in/ft slope to ensure water will not pond on the roof
  • Gutter and downspout system

    Crucial part of a building's exterior infrastructure designed to manage rainwater runoff effectively
  • Functions of gutter and downspout system
    • Rainwater collection
    • Water diversion
    • Protect walls from water runoff
    • Helping to ensure a dry basement
    • Preventing soil erosion
    • Preserve landscaped areas
  • Components of gutter and downspout systems
    • Gutter
    • Downspout
    • End caps and corner pieces
    • Hangers and brackets
    • Gutter guards
    • Gutter elbow
  • Types of gutter systems
    • K-style gutters
    • Half-round gutters
    • Box gutters
    • Seamless gutters
  • Downspouts
    Vertical pipes connected to gutters, directing water from the roof to the ground or a drainage system
  • Surface drainage systems
    Canals with shallow ditches created for runoff water to prevent flooding or pooling on property
  • Catch basins
    Structures designed to collect and hold rainwater and other precipitation runoff from paved surfaces
  • Catch basins
    • Capture sediment, debris, and pollutants from surface runoff while allowing water to flow into the drainage system
    • Typically include a sump or reservoir where sediment settles out before water continues into the piping network
  • Storm drains
    Inlet structures that collect stormwater runoff from the surface and direct it into an underground piping network
  • Swales
    Shallow channels with gently sloping sides used to move water away from buildings, driveways, and parking lots
  • Swales
    • Infiltration basins designed to manage water runoff, filter pollutants, and increase rainwater infiltration
  • Detention ponds

    Help prevent flooding by slowing down the flow of stormwater and reducing the risk of downstream erosion and property damage
  • Retention ponds
    Help to recharge groundwater, improve water quality by trapping pollutants, and provide habitat for wildlife
  • Challenges of surface drainage

    • Proper maintenance
    • Cost
  • Swales
    • Shallow channels with gently sloping sides
    • Infiltration basins designed to manage water runoff, filter pollutants, and increase rainwater infiltration
  • Detention ponds

    • Help prevent flooding by slowing down the flow of stormwater and reducing the risk of downstream erosion and property damage
    • Often implemented in urban areas to manage increased runoff from impervious surfaces
  • Retention ponds
    • Help recharge groundwater, improve water quality by trapping pollutants, and provide habitat for wildlife
    • Commonly used in developments where preserving natural hydrology and mitigating flood risk are priorities
  • Challenges of surface drainage
    • Proper Maintenance and Cost
    • Limited Space and Land Use Conflicts
  • Addressing these challenges requires a holistic approach to stormwater management, incorporating green infrastructure solutions, land use planning, public education, and community engagement