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Permit Number: TC-RES-0824-04505
Parcel: 12617215B

Review Status: Requires Resubmit

Review Details: RESIDENTIAL NEW DWELLING v.3

Permit Number - TC-RES-0824-04505
Review Name: RESIDENTIAL NEW DWELLING v.3
Review Status: Requires Resubmit
Review Date Reviewer's Name Type of Review Description Status Comments
09/05/2024 Site Engineering NOT REQUIRED
09/05/2024 Bldg Permits - Post Review Express PENDING ASSIGNMENT
08/12/2024 Residential Building REQUIRES RESUBMIT TC-RES-0824-04505
PLAN REVIEW COMMENTS

Plan review for the above referenced structure has been completed. This letter reflects comments to be addressed. For facilitating a shorter back check time, please provide updated plans and calculations with a written response to each of the notated items indicating action taken. Do not cloud the changes made for comment updates; revisions are processed if changes occur after the permit is issued.

SCOPE OF REVIEW:

The scope of this plan review covers architectural, plumbing, mechanical, energy conservation and electrical. All code references are to the 2018 International Residential Code and 2018 International Energy Conservation Code. All features were checked only to the extent allowed by the submittals provided. All portions of this project are assumed to meet or will meet other departmental requirements, conditions, and concerns before permit approval.

GENERAL REQUIREMENTS:

The City of Tucson adopted the 2018 IRC with amendments and building ordinances for all dwellings.

Provide a response letter on separate file with the updated construction plan set.

GENERAL COMMENTS :

1. All plans submitted for a newly constructed one- or two-family dwelling after July 1, 2009 require a solar photo-voltaic system, or future installation preparation City of Tucson Ordinance #10549 .
a. Show a minimum 300 SF clear solar-ready zone on a roof or framing plan, T103.3. Model plans should show four typical south facing roof surfaces.
b. Label a double breaker space for future Photo Voltaic on the panel schedule opposite end from the main/supply side, T103.9. Update breaker space to the last panel space.
2. All plans submitted for a newly constructed one- or two-family dwelling after June 1, 2010, must provide gray water utilization or preparation, Ordinance #10579/11089 revised July 9, 2013. The ordinance revision now requires a gray drain line discharge from one fixture for a one-story dwelling. Additional gray fixture drains are optional. Show a second clothes washer standpipe plumbed to an exterior wall above grade when feasible, or a bathing fixture drain looped 3’ beyond an exterior wall below grade before connection to the building drain. Show a bathing fixture drain looped 3’ beyond an exterior wall below grade before connection to the building drain when a clothes washer is not located at an exterior wall. Use the appropriate detail at https://www.tucsonaz.gov/Departments/Planning-Development-Services/Building-Safety/Water-Energy-Conservation Gray Water Illustrations
3. Show compliance with the Electric Vehicle Supply Equipment Ordinance adopted by the City of Tucson Ordinance #11844 on 6/22/2021. Include a 40 ampere 240-volt dedicated branch circuit with a NEMA 14-50R receptacle for charging an electric vehicle at a proposed parking space.

SITE PLAN:

1. Show the water line location between the meter and ADU without passing through the primary dwelling, R106.1.1. Each dwelling requires an appropriate source of electrical and water supply.
2. Each dwelling unit should have an individual 3-foot clear space (including the roof projections) known as the fire separation distance for reducing fire spread. The carport roof between the dwellings provides a fire path requiring one-hour fire-resistive construction in compliance with IBC Table 721.1(2). A 5/8” Type X gypsum board ceiling provides compliance.

PLANS:

1. Notate a cool (white) roof finish (greater than 60 SRI) as required by the ADU provisions.
2. Show a maximum ½” floor elevation changes at a notated accessible route entrance on the floor plan, R106.1.1. Include all threshold conditions for a route from the exterior into the living space.

SECTIONS - DETAILS:

1. Provide a minimum 12” foundation depth (R403.1.4), along with a 6” clearance above the ground (R317.1 item 5). Update the detail on sheet #5.
2. An unvented roof assembly requires an air-impermeable rigid insulation material with a minimum R-5 value applied correctly to either side of the roof sheathing, R806.5. Show a roof design with insulation types and minimum thickness for meeting the condensation control requirement and the minimum total insulation value of R-38 or R-30 when extended over the wall top plate for additions under 500 SF. Clarify the ceiling/roof insulation detail showing the air-impermeable rigid insulation material adhered to either side of the roof sheathing and the batt insulation in contact with the roof material. Update the details on sheet #9.

PLUMBING PLANS:

1. Show an individual accessible water supply shut off and water heater for the proposed dwelling unit, P2903.9.1.
2. Show the water heater rating, P2801.1.

MECHANICAL PLANS:

1. Provide (an HVAC system with fresh air intake) whole-house mechanical ventilation with controlled exhaust, R303.4; N1103.6 & M1505.4. Show the minimum airflow rate setting and location of the device requiring this adjustable setting. A one-bedroom dwelling under 1501 SF requires a 30 CFM continuous setting.

ELECTRICAL PLANS:

1. Update the Riser Diagram showing a minimum service conductor rating of #3 copper 75 degree C for the 100 AMP feeder, E3602.1 & E3603.1.
2. Show two or more 2O AMP small appliance circuits at the kitchen countertop receptacle outlets; they may also serve the breakfast room and dining room, but not other locations, E3703.2 and E3901.3.
3. Interior 15A & 20A circuits serving outlet locations (except garage, kitchen, and bathrooms) including receptacles, lights, and smoke detectors require combination type arc-fault circuit interrupters, E3902.16. Add notation to plans.

INTERNATIONAL ENERGY CONSERVATION CODE:

1. Energy Certificate: (Mandatory) place near the indoor furnace or in utility room, N1101.14. Add notation to plans.

If you have any questions, please contact:
PDSD-Residential@tucsonaz.gov
City of Tucson Residential Plan Review

Submit a corrected plan set at https://www.tucsonaz.gov/pdsd
08/30/2024 Site Zoning REQUIRES RESUBMIT The lot coverage calculation is not correct. Per UDC Article 6.4.3.C.1.a Roofed areas, porches, open on at least one side are not included in the calculation.
08/05/2024 PDSD Application Completeness Express REVIEW COMPLETED