
Explore the single stack drainage system, where fixtures connect to a common soil or waste stack, with WC distance 2.4 m and vertical spacing 200–600 mm.
Examine the second one pipe drainage system, designed like the single stack but with an individual windpipe and vent from fixtures, ideal for high-rise buildings.
Explore the two pipe drainage system with common or separate vents. Wastewater from the waste stack can be reused for irrigation and recycling; soil waste cannot.
Explore how pipe slope is represented in inches per foot, fractions, and percentages, with examples like 1/8 and 1%. Learn how IPC standards guide slope selection by pipe size.
Explain how interceptors—grease, oil, and sand interceptors—separate and retain fats, oils, grease, and sand in wastewater to protect the sewer.
Learn how a grease interceptor traps fat, oil, and grease from food preparation areas and sizes it by incoming flow rate and grease retention capacity using table 1003.3.5.1.
Calculate the triple compartment port sink capacity to obtain 28.05 gpm, adjust to 75% for a 21 gpm inflow, and select the grease interceptor size (£40) from the retention table.
Explain primary and secondary roof drains, emphasizing the secondary as a heavy rainfall failsafe to protect roof structural integrity from blockages. Describe scooper placement and 100-unit spacing between drains.
Analyze the architectural layout of a flat roof with low slope to define seven zones; assign one drain per zone and compute flow with C×I×A, convert to gpm.
Ventilation exchanges air between drainage pipes and the atmosphere to release sewer gases and admit air, maintaining balanced pressure and protecting fixture-trap seals from fluctuations.
Size the wet vent for a private bathroom group by calculating drainage fixture units, excluding the most downstream and symmetrical fixtures, and select a two-inch vent per the IPC table.
Understand how the positive air pressure attenuator and air admittance valve maintain balanced atmospheric pressure in drainage systems, reducing pressure and protecting trap seals with a membrane.
Explore sump pit design: wetwell diameter minimum 18 inches and depth minimum 24 inches, and calculate volume with v = t × q / 4 plus 10–15% for the pump.
Compare sump pumps and ejector pumps to learn which is built for non sanitary wastewater in unfinished basements and which handles sanitary waste in offices and bathrooms.
Design a cylindrical sump pit and pump for a drainage system, calculate pit volume with pi D^2/4, and assess peak drainage from rainwater, floor cleaning, car washing, and fire loads.
Size a sump pump system for the sun pit, meeting a peak flow of 3.15 l/s with total head 8.68 ft, accounting for 3-inch piping and gate and check valves.
Master the five-step method to size the external drainage manhole network: determine count, compute inlets and outlets, and select sizes using NBC tables.
Section – 01 Introduction to Sanitary Drainage System of Buildings
Introduction
Sanitary Drainage Pipework
Drainage Systems types – Single Stack System
Drainage Systems types – One Pipe System
Drainage Systems types – Two Pipe System
Understanding Slope of a pipe Mathematically
Significance & Selection of a pipe Slope
Section – 02 Design & Calculations of Sanitary Pipes
Introduction to Sanitary Pipework
Learn 5 Steps to size Horizontal Sanitary Branches
Learn 4 Steps to size Sanitary Stacks
Learn 2 Steps to size the Building drain
Section – 03 Traps & Interceptors
Understandings Traps & its importance in Plumbing
Traps Classification
Floor Trap or Nahani Trap
Gully trap
Intercepting Trap
P Trap
Q Trap
S Trap
Understanding Interceptors & Its types
Requirement & Sizing of Grease Interceptor
Requirement & Sizing of Oil Interceptor
Requirement & Sizing of Sand Interceptor
Section – 04 Design & Calculation of Storm Water Drainage System
Introduction to Storm Water Drainage System
Collection of Stormwater (Sources & Methods )
Understanding area of Catchment & How to Calculate it
Catchment Area Calculation for Flat surface
Catchment Area Calculation for Sloped surface
Significance of Runoff Coefficient
Understanding Rainfall Intensity with example
What is Roof Gutter & Its types
Learn 4 Steps to Design Roof Gutter & Downspout
What is Primary & Secondary Roof Drain
Learn 7 Steps to Size the Roof Drainage Network
Methods of Discharging Storm Water
Rainwater Harvesting
Section – 05 Design & Calculation of Ventilation systems in Drainage system
What is Ventilation?
Why is Ventilation needed in Drainage System?
Understanding Trap Design
Methods of Ventilation in Drainage Systems
Stack Ventilation
a) Stack Venting
b) Vent Stack
c) Relief Vent
d) Yoke Vent
6. Trap Ventilation
a) Individual/Back Vent
b) Unit/Common Vent
c) Circuit/Loop Vent
d) Wet Vent
7. Design of Wet Vent
8. Design of Circuit Vent
9. Design of Vent Stack
10. Design of Unit Vent
11. Design of Individual Vent
12. An Introduction to Active Drainage Ventilation System
13. Understanding Positive Air Pressure Attenuator (P.A.P.A) & its working
14. Understanding Air admittance Valve & its working
15. Design Guidelines for Active Drainage Ventilation in High Rise Buildings
Section – 06 Design & Calculation of Basement Drainage system
An Introduction to Basement Drainage System
Design Considerations of Sump Pit
Basement Drainage Pumps – Sump Pump & Ejector Pump
Design & Calculation of Wet Pit or Sump pit (Sump Pump )
Design & Calculation of Wet Pit or Sump pit (Ejector Pump )
Section – 07 Design & Calculation of Building External Drainage system
Understanding Invert Level of Pipe
How to Calculate Invert level of Straight & Slope Pipe ?
Slope Calculation using Pipe Invert levels
Concept of External Foul Drainage system in Buildings
What is Manhole/Inspection Chamber & Its types?
Location of Manhole/Inspection Chamber
9 Important Design Considerations of Manhole/Inspection Chamber
Learn 5 Steps to Design Building External Drainage system