Podcast
Questions and Answers
The maximum height of horses supporting scaffold platforms is 20 ft.
The maximum height of horses supporting scaffold platforms is 20 ft.
False
When using a ladder, the ladder base should be placed one-fourth of the ladder length away from the structure against which the ladder is leaning.
When using a ladder, the ladder base should be placed one-fourth of the ladder length away from the structure against which the ladder is leaning.
True
A hygrometer is an instrument for measuring temperature.
A hygrometer is an instrument for measuring temperature.
False
Heat can only be transferred through conduction.
Heat can only be transferred through conduction.
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A sectional elevation drawing would provide the plumber with information as to the depth of a specific portion of the structure.
A sectional elevation drawing would provide the plumber with information as to the depth of a specific portion of the structure.
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The leveling rod is marked off in 5ths and 10ths.
The leveling rod is marked off in 5ths and 10ths.
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Water in a heating system, heated from 32°F to 212°F, will expand approximately 1/10 of its original volume.
Water in a heating system, heated from 32°F to 212°F, will expand approximately 1/10 of its original volume.
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Storage tanks up to 100 gallons capacity are tapped for 1 1/4" connections.
Storage tanks up to 100 gallons capacity are tapped for 1 1/4" connections.
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The maximum height of horses supporting scaffold platforms is 18 ft.
The maximum height of horses supporting scaffold platforms is 18 ft.
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Electrical equipment is typically protected by a water-based extinguisher.
Electrical equipment is typically protected by a water-based extinguisher.
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A hygrometer is an instrument for measuring relative humidity.
A hygrometer is an instrument for measuring relative humidity.
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The transfer of heat can only occur in two ways: conduction and convection.
The transfer of heat can only occur in two ways: conduction and convection.
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A vacuum is a space with a very low air pressure.
A vacuum is a space with a very low air pressure.
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For light gauge band iron and thinwall tubing, 40 teeth per inch is best.
For light gauge band iron and thinwall tubing, 40 teeth per inch is best.
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A sectional elevation drawing would provide the plumber with information as to the width and depth of a specific portion of the structure.
A sectional elevation drawing would provide the plumber with information as to the width and depth of a specific portion of the structure.
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Elevation measurements on piping plans are called pipe elevations.
Elevation measurements on piping plans are called pipe elevations.
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The dumpy level is rotating in a vertical plane only.
The dumpy level is rotating in a vertical plane only.
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Water in a heating system, heated from 32°F to 212°F, will expand approximately 1/5 of its original volume.
Water in a heating system, heated from 32°F to 212°F, will expand approximately 1/5 of its original volume.
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Study Notes
Ladder Safety
- The ladder base should be positioned one-fourth of the ladder length away from the structure against which the ladder is leaning.
Scaffolding
- The maximum height of horses supporting scaffold platforms is 16 ft (4.88 m).
Fire Extinguishers
- A dry powder CO2 extinguisher is composed of 99% baking soda and 1% drying agent.
Measuring Instruments
- A hygrometer is used to measure relative humidity.
Heat Transfer
- Heat can be transferred through three methods: conduction, convection, and radiation.
Vacuum
- A vacuum is a space entirely devoid of matter.
- A partial vacuum is a space where an air pressure exists that is less than atmospheric.
Band Iron and Thinwall Tubing
- 32 teeth per inch (13 teeth per cm) is best for light gauge band iron and thinwall tubing.
Drawing and Measurements
- A sectional elevation drawing provides information on the width and height of a specific portion of a structure.
- Elevation measurements on piping plans are called invert elevations.
Leveling
- Two main parts are required for shooting grade levels: the dumpy level and the leveling rod.
- The dumpy level rotates in a horizontal plane only.
- The leveling rod is also known as a dumpy level and is marked off in 10ths and 100ths.
Heating Systems
- Water heated from 32°F to 212°F (0°C to 100°C) expands approximately 1/23 of its original volume.
- Absolute pressure is the sum of gauge pressure and atmospheric pressure.
Storage Tanks
- Storage tanks with a capacity up to 82 gallons (310.4 liters) are tapped for 1" (25 mm) connections.
- Tanks with a capacity over 82 gallons are tapped a minimum of 1 1/4" (32 mm) generally.
Asbestos Cement Water Main Pressure Pipe
- The standard length of asbestos cement water main pressure pipe is 13 ft (approximately 4 m).
Plumbing Systems
- The installation of a water softener in a residential piping system causes a fairly high pressure loss.
- Pipe size measurements are always given in N.P.S.-I.D. or inside diameter.
- The building drain is the lowest horizontal piping inside the building and connects with the building sewer.
- The building sewer extends from the main sewer or other disposal terminal to the building drain at a distance of approximately 5' (152 cm) from the foundation wall.
Sewer Systems
- Public sewer manholes can be used to verify main sewer elevations and direction of flow.
- Gases found in sewer air include carbon monoxide, methane, hydrogen sulphide, carbon dioxide, gasoline, ammonia, and sulphur dioxide.
- Primary treatment in a sewage treatment plant removes floating and settleable solids.
- Secondary treatment removes dissolved solids.
- No garbage disposal unit shall be installed on any indirect fresh-air waste system or into any grease interceptor.
Ladder Safety
- The ladder base should be positioned one-fourth of the ladder length away from the structure against which the ladder is leaning.
Scaffolding
- The maximum height of horses supporting scaffold platforms is 16 ft (4.88 m).
Fire Extinguishers
- A dry powder CO2 extinguisher is composed of 99% baking soda and 1% drying agent.
Measuring Instruments
- A hygrometer is used to measure relative humidity.
Heat Transfer
- Heat can be transferred through three methods: conduction, convection, and radiation.
Vacuum
- A vacuum is a space entirely devoid of matter.
- A partial vacuum is a space where an air pressure exists that is less than atmospheric.
Band Iron and Thinwall Tubing
- 32 teeth per inch (13 teeth per cm) is best for light gauge band iron and thinwall tubing.
Drawing and Measurements
- A sectional elevation drawing provides information on the width and height of a specific portion of a structure.
- Elevation measurements on piping plans are called invert elevations.
Leveling
- Two main parts are required for shooting grade levels: the dumpy level and the leveling rod.
- The dumpy level rotates in a horizontal plane only.
- The leveling rod is also known as a dumpy level and is marked off in 10ths and 100ths.
Heating Systems
- Water heated from 32°F to 212°F (0°C to 100°C) expands approximately 1/23 of its original volume.
- Absolute pressure is the sum of gauge pressure and atmospheric pressure.
Storage Tanks
- Storage tanks with a capacity up to 82 gallons (310.4 liters) are tapped for 1" (25 mm) connections.
- Tanks with a capacity over 82 gallons are tapped a minimum of 1 1/4" (32 mm) generally.
Asbestos Cement Water Main Pressure Pipe
- The standard length of asbestos cement water main pressure pipe is 13 ft (approximately 4 m).
Plumbing Systems
- The installation of a water softener in a residential piping system causes a fairly high pressure loss.
- Pipe size measurements are always given in N.P.S.-I.D. or inside diameter.
- The building drain is the lowest horizontal piping inside the building and connects with the building sewer.
- The building sewer extends from the main sewer or other disposal terminal to the building drain at a distance of approximately 5' (152 cm) from the foundation wall.
Sewer Systems
- Public sewer manholes can be used to verify main sewer elevations and direction of flow.
- Gases found in sewer air include carbon monoxide, methane, hydrogen sulphide, carbon dioxide, gasoline, ammonia, and sulphur dioxide.
- Primary treatment in a sewage treatment plant removes floating and settleable solids.
- Secondary treatment removes dissolved solids.
- No garbage disposal unit shall be installed on any indirect fresh-air waste system or into any grease interceptor.
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Description
Test your knowledge on safety guidelines and measurement tools used in construction sites, including ladder safety, scaffold setup, firefighting equipment, and climate measurement.
