Podcast
Questions and Answers
What percentage of zinc is contained in brass pipes?
Which type of plastic pipe is permanently rigid and not affected by heat?
What is a characteristic of thermoplastic pipes?
What is the purpose of pipe fittings in plumbing?
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What type of fitting provides a 90° change in direction with a short radius?
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Which fitting would provide a 180° change in direction?
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Which of the following is a disadvantage of plastic pipes?
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What is a requirement for changes in direction of piping in drainage systems?
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What is the primary material used in the manufacture of seamless pipes?
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Which type of copper tube is considered the heaviest and is used in municipal residential applications?
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What is a characteristic disadvantage of Type DWV copper tubes?
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Why has the use of lead pipes become rare in modern plumbing systems?
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What material is commonly used for storm as well as sanitary sewer installations?
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What is the primary composition of copper tubes used in water supply systems?
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What is the significance of dielectric unions in plumbing?
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What standard diameter range is available for Type DWV copper tubes?
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What is the purpose of a cap in piping systems?
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Which fitting allows for the connection of pipes with different diameters?
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What is a union patente primarily used for in piping systems?
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What distinguishes an increaser from other pipe fittings?
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How is a bend offset characterized in piping?
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What is the primary use of Cast Iron Soil Pipe (CISP) in plumbing systems?
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Which type of pipe is specifically designed to handle acid wastes?
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How often must horizontal runs of Acid Resistant Cast Iron Pipe be supported to prevent sagging?
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What are the potential consequences of using defective plumbing materials?
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What is a key property of Asbestos Cement Pipe that makes it suitable for certain applications?
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Which type of galvanized steel pipe is formed by drawing a flat strip of steel and then welding it?
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What diameter range do Cast Iron Soil Pipes typically fall within?
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What is a notable drawback of galvanized steel pipe in plumbing systems?
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What is the main purpose of a Combination Wye Branch fitting?
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Which fitting is specifically designed with a slight curve in its 90° transition for improved flow?
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In drainage systems, which type of tee must be used when flow characteristics are of concern?
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What defines an Upright Wye Combination fitting?
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Which type of fitting connects different pipe materials, like galvanized and plastic?
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What is the function of a Coupling in piping systems?
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Which fitting is characterized by having external threads at both ends?
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What primarily differentiates a Socket from a Coupling?
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Study Notes
Plumbing Materials Overview
- Plumbing materials must be defect-free to avoid unsanitary conditions
- Selection of pipes, fittings, valves, and controls depends on the specific plumbing system requirements
Types of Pipes
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Cast Iron Soil Pipe (CISP):
- Fabricated from an alloy of carbon and silicon
- Available in service (standard) and extra heavy weights
- Common sizes: 50-150mm, lengths from 5' to 10'
- Corrosion-resistant to some extent; four varieties exist
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Acid Resistant Cast Iron Pipe:
- Alloy of cast iron and silicon
- Used in areas discharging acid wastes
- Requires support every 1.5 meters due to brittleness
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Asbestos Cement Pipe:
- Composed of asbestos fiber and Portland cement
- Suitable for soil and waste applications; compatible with concrete embedment
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Galvanized Steel Pipe:
- Made from mild steel, subject to corrosion from alkaline and acid water
- Two types: welded and seamless, used for various plumbing applications
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Vitrified Clay Pipe:
- Common in storm and sanitary sewer installations
- Made of clay, resistant to most acids, ideal for underground use
-
Lead Pipe:
- Composed of 99.7% pig lead; used for specialized applications
- Limited modern use due to health concerns
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Copper Tubes:
- Almost pure copper, used for water supply and sanitary systems
- Available in rigid and flexible forms; four types for different applications
- Susceptible to corrosion in certain conditions
-
Brass Pipes:
- Made of an alloy of copper (85%) and zinc (15%)
- Expensive, resistant to acids, smooth internal surface
-
Plastic or Synthetic Pipe:
- Suitable for drainage and water supply; includes thermoset and thermoplastic types
- Advantages: resistance to chemicals, low cost
- Disadvantages: poor structural stability and fire resistance
Pipe Fittings
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Designed to connect pipes and change directional flow; radius of curvature is important to prevent solid accumulation.
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Bends (sweep):
- Change direction, available as short and long sweep fittings
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Return Bend Elbow:
- Provides a 180° change in direction
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Elbow:
- Commonly has a 90° angle; used in water supply systems
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Street/Service Fitting:
- Malleable iron fitting for threaded pipe, comes with a 45° or 90° angle
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Wye/Wye Branch:
- Connects a branch pipe at a 45° angle
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Combination Wye Branch:
- Combines wye branch and a 1/8 bend for drainage direction change
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Upright Wye Combination:
- One-piece fitting for specific stack configurations
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Tee:
- Connects a branch pipe at right angles; code requires sanitary tees in drainage systems
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Sanitary Cross Tee:
- Designed to facilitate proper flow in drainage systems
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Coupling & Socket:
- Used to join or strengthen two pipes
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Adapter:
- Connects different pipe materials
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Nipple:
- Short pipe section with threads on both ends
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Cap & Plug:
- Close ends of pipes using internal or external threads
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Bushing:
- Joins two pipes of different sizes
-
Union Patente:
- Connects two pipes without turning them; seals with a rotating center piece
-
Bend Offset:
- Changes direction of pipe lines; not limited to 90°
-
Reducer & Increaser:
- Adjust sizes between pipes for compatibility
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Description
This quiz focuses on the essential materials used in plumbing systems, emphasizing the importance of quality and defect-free materials. It covers various types of pipes, fittings, valves, and controls that are vital for effective drainage and sanitation. Assess your knowledge on selecting suitable plumbing materials.
