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Permit Number: T21CM08534
Parcel: Unknown

Review Status: Completed

Review Details: RESUBMITTAL

Permit Number - T21CM08534
Review Name: RESUBMITTAL
Review Status: Completed
Review Date Reviewer's Name Type of Review Description Status Comments
02/07/2022 KEN VAN KARSEN BUILDING-RESIDENTIAL REVIEW Reqs Change T21CM08534
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:

An ADU is an independently functioning dwelling and requires compliance with the 2018 IRC and City of Tucson building ordinances.

Each dwelling unit with kitchen requires a separate Pima County assigned street address, R319. Show a new dwelling address on the site plan or remove cooking appliances.

A new dwelling unit will require collection of development impact fee when the building permit is processed, City of Tucson Ordinance #11203.

GENERAL COMMENTS:

1. A dwelling unit providing complete independent living facilities requires compliance with design ordinances for handicap, solar water, photo-voltaic, gray water and EV charging preparations. Design Ordinances adopted by the City of Tucson.
2. Show compliance with the Inclusive Home Design Ordinance adopted by the City of Tucson Ordinance #10463 on 10/16/2007. Notate accessible route, minimum door width, changes in floor elevation, door hardware, electrical outlet reach range, grab bar reinforcement, etc.
3. All SFR and Duplex plans submitted after March 1, 2009 require a solar water system, or future installation preparation City of Tucson Ordinance #10549 with one of the following provisions: ½”control conduit and two ¾” copper piping for water with rooftop termination; straight 3” capped sleeve; or an accessible attic (clear path 30” wide x 30” high) over the water heater. Show appropriate notation.
4. All SFR and Duplex plans submitted 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. Show breaker location.
5. All construction drawings submitted after June 1, 2010 for one- or two-family dwellings 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. See details at https://www.tucsonaz.gov/pdsd/water-energy-conservation
6. 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. Indicate the location of buildings, utility meters and gas, water, electric and sewer or septic lines from property line to building, R106.1.1. Show all utility point of connections without dependance on another dwelling.

PLANS:

1. Show a maximum ½” floor elevation changes at a notated accessible route entrance (exterior door landing) on the floor plan, R106.1.1.
2. Show roof structural members with rafter ties (or ceiling joists) and collar ties (ridge straps) when the roof pitch is equal or greater than 3” to 12”, R802.3 or provide manufacturer’s calculations and data for pre-engineered trusses dated and wet-sealed by an engineer who is registered in Arizona, R106.1.
3. Individual dwelling units require separation with 1-hour fire-resistance rated assemblies from floor to bottom of roof sheathing, R302.3. Provide a detail or notation showing compliance with 703.3 of the 2018 IBC.

SECTIONS - DETAILS:

1. Show the roof with a Solar Reflectance Index (SRI) greater than 60 or use another cool roof technology prescribed by the Cool Roof Rating Council - https://coolroofs.org/

PLUMBING PLANS:

1. Tucson Water Department limits flow rates for each water meter size in compliance with P2903.7. Show an appropriate yard pipe bypassing the existing dwelling and an upgraded water meter size.
2. Show an individual accessible water supply shut off for each dwelling unit, P2903.9.1.

MECHANICAL PLANS:

1. Provide proposed thermostat controls for interfacing with the existing HVAC. And identify the duct firestop system for an HVAC serving two dwelling units with common ducts, R302.4.1.2. Or provide a separate HVAC system.

ELECTRICAL PLANS:

1. TEP usually requires the service panel on the property at the closest building to the service transformer. A service line change or a new meter location must be coordinated with TEP for approval.
2. Show service meter on a Riser Diagram for the dwelling and detached building with a single drop from the utility. A feeder is required between distribution panels, NEC 225.30 and E3403.
3. Provide a panel schedule showing panel size, circuit numbers, ampacity, wire size and general description, E3404.13 & E3706.2.
4. Show receptacle outlets at wall spaces 2’ or more with no wall point (exclude door openings) more than 6’ from a receptacle outlet, E3901.2. Include the dining area.
5. Show or notate a disconnect means or a locking breaker for the water heater, E4101.5.
6. Provide the Electric Vehicle Supply Equipment 40 ampere 240 volt dedicated branch circuit with a NEMA 14-50R receptacle and label the circuit “EV Ready”, N1104.2.1. Include the Electric Vehicle load entry (typically 7680 watts) in the electrical load calculations (continuous demand) similar to the HVAC entry, N1104.2.2.

OUTDOOR LIGHTING CODE

1. Show the proposed fixture as full cut-off FCO style or provide an Outdoor Lighting Calculation including all exterior fixtures on the property for determining exterior lighting limits.

Please contact the plans reviewer if you have any questions:
Ken Van Karsen
(520) 837-4912 PDSD-Residential@tucsonaz.gov
City of Tucson Residential Plan Review