Writing Assignment #12
Question:
Where must a chimney connector enter a masonry chimney? How is the size of a chimney flue that is connected to more than one appliance calculated?
A chimney connector shall enter a masonry chimney not less than 6 inches above the bottom of the chimney. A capped tee shall be provided for a cleanout if the connector cannot be located at least 6 inches from the bottom. The size of a flue connected to more than one appliance shall be sized based on the area of the largest connector plus 50 percent of the area of additional connectors.
Writing assignment #13
Where must gas shutoff valves be located? Where must appliance shutoff valves be installed? Equipment shutoff valves for a fireplace?
Gas shutoff valve must be located within 6 feet of any gas appliance. Equipment shutoff valves for a fireplace shall be installed in accordance with the appliance manufacturer’s instructions, and within 6 feet from the fireplace opening.
In Reference to Writing Assignment #13
*** What materials are acceptable for use as gas piping?**
Steel, stainless steel and wrought iron pipe not lighter than schedule 10 and complies with dimensional standards of ASME B36.10, 10M and one of the following standards:
ASTM A53/A53M
ASTM A106
ASTM A312
When are materials allowed to be used again? Can be used again if free from foreign materials and have been ascertained to be adequate for the service intended.
In reference to writing assignment#2
Question * What is the definition of light-framed construction?
Light-framed construction is a type of construction whose vertical and horizontal structural elements are primarily formed by a system of repetitive wood or light-gage steel framing members.
Writing assignment #14.
Question:
What is the minimum required diameter for fixture tail pieces serving sinks, dishwashers, laundry tubs, bathtubs, and similar fixtures? For bidets, lavatories, and similar fixtures?
Fixture tail pieces shall be not less than 1.5" in diameter for sinks, dishwashers, laundry tubs, bathtubs and similar fixtures. Bidets, lavatory and similar fixtures should be 1.25" in diameter.
G2406.2 (303.3)Prohibited locations.
Appliances shall not be located in sleeping rooms, bathrooms, toilet rooms, storage closets or surgical rooms, or in a space that opens only into such rooms or spaces, except where the installation complies with one of the following:
- The appliance is a direct-vent appliance installed in accordance with the conditions of the listing and the manufacturer’s instructions.
- Vented room heaters, wall furnaces, vented decorative appliances, vented gas fireplaces, vented gas fireplace heaters and decorative appliances for installation in vented solid fuel-burning fireplaces are installed in rooms that meet the required volume criteria of
Section G2407.5. - A single wall-mounted unvented room heater is installed in a bathroom and such unvented room heater is equipped as specified in Section G2445.6 and has an input rating not greater than 6,000 Btu/h (1.76 kW). The bathroom shall meet the required volume criteria of Section G2407.5.
- A single wall-mounted unvented room heater is installed in a bedroom and such unvented room heater is equipped as specified in Section G2445.6 and has an input rating not greater than 10,000 Btu/h (2.93 kW). The bedroom shall meet the required volume criteria of Section G2407.5.
- The appliance is installed in a room or space that opens only into a bedroom or bathroom, and such room or space is used for no other purpose and is provided with a solid weather-stripped door equipped with an approved self-closing device. Combustion air shall be taken directly from the outdoors in accordance with Section G2407.6.
- A clothes dryer is installed in a residential bathroom or toilet room having a permanent opening with an area of not less than 100 square inches (0.06 m) that communicates with a space outside of a sleeping room, bathroom, toilet room or storage closet.
P2503.4 Building sewer testing.
The building sewer shall be tested by insertion of a test plug at the point of connection with the public sewer, filling the building sewer with water and pressurizing the sewer to not less than a 10-foot (3048 mm) head of water. The test pressure shall not decrease during a period of not less than 15 minutes. The building sewer shall be watertight at all points.
A forced sewer test shall consist of pressurizing the piping to a pressure of not less than 5 psi (34.5 kPa) greater than the pump rating and maintaining such pressure for not less than 15 minutes. The forced sewer shall be watertight at all points.
P2503.5 Drain, waste and vent systems testing.
Rough-in and finished plumbing installations of drain, waste and vent systems shall be tested in accordance with Sections P2503.5.1 and
P2503.5.2.
P2503.5.1 Rough plumbing. P
DWV systems shall be tested on completion of the rough piping installation by water, by air for piping systems other than plastic, or by a vacuum of air for plastic piping systems, without evidence of leakage. The test shall be applied to the drainage system in its entirety or in sections after rough-in piping has been installed, as follows:
- Water test. Each section shall be filled with water to a point not less than 10 feet (3048 mm) above the highest fitting connection in that section, or to the highest point in the completed system. Water shall be held in the section under test for a period of 15 minutes.
The system shall prove leak free by visual inspection. - Air test. The portion under test shall be maintained at a gauge pressure of 5 pounds per square inch (psi) (34 kPa) or 10 inches of mercury column (34 kPa). This pressure shall be held without introduction of additional air for a period of 15 minutes.
- Vacuum test. The portion under test shall be evacuated of air by a vacuum-type pump to achieve a uniform gauge pressure of -5 pounds per square inch or a negative 10 inches of mercury column (-34 kPa). This pressure shall be held without the rem of additional air for a period of 15 minutes.
P2503.7 Water-supply system testing.
Upon completion of the water-supply system or a section of it, the system or portion completed shall be tested and proved tight under a water pressure of not less than the working pressure of the system or, for piping systems other than plastic, by an air test of not less than 50 psi (345 kPa). This pressure shall be held for not less than 15 minutes. The water used for tests shall be obtained from a potable water
source.
Exception: For PEX piping systems, testing with a compressed gas shall be an alternative to hydrostatic testing where compressed air or other gas pressure testing is specifically authorized by the manufacturer’s instructions for the PEX pipe and fittings products installed at the time the system is being tested, and compressed air or other gas testing is not otherwise prohibited by applicable codes, laws or regulations outside of this code.
P2801.7 Water heaters installed in garages.
Water heaters having an ignition source shall be elevated such that the source of ignition is not less than 18 inches (457 mm) above the garage floor.
Exception: Elevation of the ignition source is not required for appliances that are listed as flammable vapor ignition-resistant.
The proper operation of a gravity flow drainage system (Chapter 30) depends on maintaining an air path throughout the system to prevent waste and odor “blow back” into fixtures and siphoning of the trap seal in fixture traps (Chapter 32).
E3601.6.2 Service disconnect location.
The service disconnecting means shall be installed at a readily accessible location either outside of a building or inside nearest the point of entrance of the service conductors. Service disconnecting means shall not be installed in bathrooms. Each occupant shall have access to the disconnect serving the dwelling unit in which they reside. |230.70(A) (1)(2), 230.72(C)]
Premium Code Insights: # Commentary Excerpts
E3601.7 Maximum number of disconnects. P
Each service shall have only one disconnecting means unless installed using one or more of the methods specified in Sections E3601.7.1 through E3601.7.3. In all cases, the maximum number of disconnecting means for any service shall not exceed six and the multiple service disconnecting means shall be grouped.
E3901.2.1 Spacing.
Receptacles shall be installed so that no point measured horizontally along the floor line of any wall space is more than 6 feet (1829 mm), from a receptacle outlet. |210.52(A)(1)]
E3901.2.2 Wall space.
As used in this section, a wall space shall include the following: [210.52(A)(2)]
- Any space that is 2 feet (610 mm) or more in width, including space measured around corners, and that is unbroken along the floor line by doorways and similar openings, fireplaces, and fixed cabinets that do not have countertops or similar work surfaces.
- The space occupied by fixed panels in exterior walls, excluding sliding panels.
- The space created by fixed room dividers such as railings and freestanding bar-type counters.
E3901.2.3 Floor receptacles.
Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets except where located within 18 inches
(457 mm) of the wall. [210.52(A)(3)]
Writing assignment #15.
Question:
What special condition applies where a water heater having an ignition source is installed in a garage?
The water heater must be mounted 18 inches above the finished floor of the garage.
Writing Assignment # 4
- How many egress doors from a dwelling are required? Under what conditions is an additional egress door required? What is the minimum required size of an egress door?
Answer: Not less than one egress door shall be required for dwelling unit. The minimum required size of egress door is height of not less than 78inches, width of not less than 32inches.There are no other conditions where an additional egress door is required.
Writing Assignment #5
- When must a foundation wall be dampproofed? Waterproofed? What methods are used for dampproofing and waterproofing?
In areas where a high-water table or other severe soil-water conditions are known to exist, IRC states that in areas where waterproofing is not required, below-grade foundation walls should be damp-proofed. To dampproof foundation walls you can use a barrier coat and install a drainage system. For waterproofing, you can also use a barrier coat .
The purpose and scope of the International Residential Code is to achieve a reasonable level of public safety and health through the establishment of minimum requirements in construction.
Writing assignment #16.
Question:
How must a vent terminal be located in relationship to a door, openable window, or similar air intake? To an adjoining building?
A vent terminal must be located not less than 4 feet directly beneath a door, openable window or similar air intake of the building or an adjacent building. The vent may also be no less than 10 feet horizontal from such an opening unless it is not less than 3 feet above the top of the opening.
Writing assignment #17.
Question:
What minimum working clearances are required for energized equipment and panelboards? How is clearance above a panelboard regulated? What is the minimum required headroom?
The minimum required working clearances required for energized electrical equipment and panelboards is 36 inches in front of the equipment. A minimum width is 30 inches or the width of the equipment if greater. The headroom above the equipment must be kept clear to a minimum of 6 feet or to the structural ceiling.
In reference to Writing Assignment #14
What is the minimum required diameter for fixture tail pieces serving sinks, dishwashers, laundry tubs, bathtubs, and similar fixtures? Not Less than 1 1/2" in diameter. For bidets, lavatories, and similar fixtures? Not less than 1 1/4" in diameter.
Writing Assignment #6
What are the limitations for notches in floor joists? Bored holes?
Notches shall not exceed 1/6 of the depth of the member, shall not be longer than 1/3 depth of member and shall not be located in the middle of 1/3 of the span. Notches at the end of floor joist shall not exceed 1/4 depth of member.
Bored holes shall not be closer than 2 inches to top or bottom of the member or located near any other hole.
Writing assignment #18
Question:
What method is used to determine the minimum spacing requirements for convenience receptacles? What wall spaces are to be considered? How are floor receptacles regulated?
The minimum spacing requirements say that convenience outlets shall be placed horizontally along the floor line no more than six feet apart. This includes any wall space that is 2 feet or more in width. Floor outlets are counted as part of the required numbers when they are located within 18 inches of the wall.
In Reference to Writing Assignment #15
What special condition applies where a water heater having an ignition source is installed in a garage? Water heater ignition source shall be elevated not less than 18 inches above the garage floor.
In Reference to Writing Assignment #16
At what minimum height must an open vent pipe terminate above a roof? Not less than 6 inches above the roof or anticipated snow accumulation level. What if the roof is used for a purpose other than weather protection? Not less than 7 feet above the roof.
Writing Assignment #7
What is the minimum required thickness of masonry walls? Parapet walls?
Minimum thickness for soild masonry walls is not less than 6inches. Soild masonry parapet walls shall not be less than 8 inches thick. Hollow masonry parapet walls shall not be less than 8 inches thick.