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Permit Review Detail
Review Status: Completed
Review Details: COMMERCIAL - TI
Permit Number - T18CM09904
Review Name: COMMERCIAL - TI
Review Status: Completed
| Review Date | Reviewer's Name | Type of Review | Description | Status | Comments |
|---|---|---|---|---|---|
| 01/30/2019 | MARTIN BROWN | FIRE | REVIEW | Approved | Pre M. Ashford 1/26 |
| 03/04/2019 | PIMA COUNTY | BUILDING-COMMERCIAL | REVIEW | Reqs Change | BUILDING – COMMERCIAL On the ‘R’ and ‘U’ Values table, sheet TS1.0, change the maximum Glazed Fenestration SHGC to 0.25. Ref. 2012 IECC Table C402.3 change the maximum window U-value to 0.50 (fixed) and 0.65 (operable). For glazed entry doors add that the maximum U-factor is 0.83. On the ‘R’ and ‘U’ Values table, sheet TS1.0, change the maximum Glazed Fenestration SHGC to 0.25. Ref. 2012 IECC Table C402.3. For exiting purposes the occupancy load of a building must be based on the function of each individual space calculated using the occupant load factors in 2012 IBC Table 1004.1.2. The Code Study on sheet TS1.0, item 6, divides the entire space by the occupancy load factor 100, used for business areas. While the Chapter 3 use and occupancy classification is B business, not all rooms in this facility are business functions. For example, the lobby 184 is an assembly use, as are the break room 168, the group room 177, the reception 101, and the conference room 167; and the load factors for these rooms is not 100 sf per occupant per Table 1004.1.2. The pharmacy 105 and medical supply 114, and other storage rooms also would not use the 100 sf per occupant load factor. Please revise the occupant load calculation to be in conformance with the Table 1004.1.2 intent. Also revise the occupancy loads at each exit in the exit width calculations and on the egress plan, sheet TS1.1. The code review on sheet TS1.0 and exiting plan on sheet TS1.1 show that to comply with maximum allowable building areas of 2012 IBC Table 503 this existing single building is to be divided into two areas (called building “B” and building “C”) with a fire wall separating them. This is allowed per 503.1.2 and 706.1. Per Table 706.4 the minimum fire rating for this fire wall shall be 2-hours which is shown on the egress plan for the portion of wall at the interior of the building. The new fire wall at the interior of the building separating building “B” from building “C” shall be a party wall per sub note c of Table 602. And per 706.1.1 party walls shall be constructed without openings. The opening through the fire wall between building “C” and building “B” with the 90-minute drop down fire shutter for this non-sprinkled structure might be allowed by the Chief Building Official with the submittal of an Appeal to the Building Official. Be sure to note that the building is non-sprinkled in the Appeal. Please include the approval/denial letter with the next submittal. A yard is shown between building “B” and building “C” to the south of the new party wall. Per 705.3 an imaginary line shall be located between the two buildings from which fire-rating of exterior walls are derived per Table 602 based on distance from the imaginary line. Per this Table, for Type VB construction and B occupancy, the minimum distance from the imaginary line for a non-fire-rated exterior wall is 10-feet. Since the distance between the existing exterior walls between building “B” and building “C” is 14-feet the west exterior wall of building “B” must be fire-rated. Line 1 of this Table shall be used for the required fire rating of the exterior wall since the distance is less than 5-feet. The required fire-rating for this exterior wall is 1-hour. The new roof structure/feature spanning from the east wall of building “C” to the west wall of building “B” is not allowed by 2012 IBC 705.2 as is extends to less than 2-feet from the imaginary line (which is located at the exterior wall of building “B”). However, if the building “B” exterior wall were to be made a 2-hour fire wall (party wall) per 2012 IBC 706 instead of a 1-hour wall per building comment 6 above this roof connection would be allowed. To do that, include a UL or other approved agency tested assembly for the exterior fire wall. A similar proximity situation to imaginary line occurs between the new entry 100 structure and the existing building “D” to the south of building “C”. While the existing building “D” and remodeled building “C” are 20-feet apart and no fire-rating for exterior walls is required per Table 602 assuming an imaginary line is located equidistant from each building, the new entry canopy vertical framing and elevated front wall extend to within 1-foot of the imaginary line. Per Table 602 the canopy structure support and front wall must be 1-hour fire-rated. The new roof span from the new entry structure for building “C” across the imaginary line to the existing building “D” shown on the reflected ceiling plan, sheet A2.0, and framing plan, sheet S3.0, is not allowed by 2012 IBC 705.2. Another proximity situation occurs between the southern exterior wall of fully remodeled building “B” and the existing building “A” to the south. In this case the existing exterior walls are about 10-feet apart and existing canopy structures connect the two buildings. However, since building “B” is being gutted and completely remodeled you are required to comply with current Codes regarding it and to propose a solution that complies with the intent of the 2012 IBC regarding these two connected buildings. One solution might be to convert the building “B” south wall to a 2-hour fire wall in compliance with 2012 IBC Section 706. 1 ½ hour fire-rated doors at the porch openings might be approvable with an Appeal to the Building Official. The plumbing fixture calculations on sheet TS1.0 provide the required fixtures for men’s and women’s rooms calculated for the structure as a whole. However, since this structure has been separated by a fire wall into two separate buildings, plumbing fixture calculations shall be done for each building separately and toilet rooms provided in each building per their calculations. Since the toilet room arrangement for this facility was not designed for two separate buildings, you will need to include this item in your Appeal to the Building Official. On demolition the plan, sheet D1.0, various partitions are shown to remain. However, where these walls are in corridors and are required to have a 1-hour fire rating, the existing drywall will have to be removed and replaced with Type X and the walls might need to be extended vertically to the underside of roof deck. Please identify these walls on the demolition plan and add appropriate keynote. Ref. 2012 IBC 107.2.1. On neither the reflected ceiling plan, sheet A2.0, nor the lighting plan, sheet E3.0, is an exit sign located above the exterior door in break room 168. Building “B” has an occupant load in excess of 50 people, therefore a second exit is required. The required exit cannot route through another building per “party wall” requirement in 706.1.1, and even if it could the proposed fire shutter (if approved by the Chief Building Official) would shut this path off in event of fire. This door shall be an exit. However, Per 2012 IBC 1015.2.1 the exit doors in non-sprinkled buildings shall be separated a minimum distance of ½ or the length of the maximum overall diagonal dimension of the building measured in a straight line between exit doors. The maximum overall dimension for building “B” scales at 124-feet. Therefore the minimum distance between exit doors of 64-feet. However, the distance between exit doors for building “B” scales 56-feet. On sheet A1.0 the exterior walls for the east wall of building “C” and the west wall of building “B” are shown as wall type E1. Please add a new exterior wall description so that the exterior wall for building “B” is 1-hour fire-rated. Include a UL or other tested assembly. See building review comment 6 above. The fire wall is shown on the floor plan, sheet A1.0, terminating at the inside of the existing exterior wall. This is allowed per 2012 IBC 706.5, exception 1, as long as the exterior wall is 1-hour fire-rated to 4-feet out on each side of the fire wall and the window opening in room 152 has ¾-hour fire protection. Wall section detail 3/A1.0 for the fire wall shows the wall terminating at the underside of the roof deck. This is allowed per 2012 IBC 706.6, exception 4, as long as there are no openings in the roof within 4-feet of the fire wall, the roof covering is Class B, and the roof is protected with 5/8” Type X gypsum board directly beneath the underside of roof sheathing supported by a minimum 2x ledgers attached to the sides of the roof framing members for a minimum distance of 4-feet on both sides of the fire wall. Fire wall details are shown in three places: details 3/A1.0, 3/A1.3 and 5/A1.3. Only detail 3/A1.3 shows the required drywall fire-shield to 4-feet either side of the fire wall. Revise all details to show the required drywall. Detail 3/A1.0 shows the top of the fire wall tied/braced to roof structure on each side of the wall. However, 2012 IBC 706.2 requires that a fire wall have sufficient structural stability under fire conditions to allow total collapse of the building on one side of the wall without collapse of the wall for the 2-hour fire period. Please explain how the wall, braced to roof structure would not be compromised by the collapse of the structure it is tied to. Details 4 and 5/A1.3 show the 1 ½-hour fire shutter set off 11 ¼” from the fire wall plane. This leaves an unrated space at the ceiling and at the jambs for fire to penetrate between buildings. Please revise these details to provide 2-hour horizontal and vertical extensions from fire wall to fire shutter track. Ref. 2012 IBC 107.2.1. The front wall of the front entry canopy shown in detail 1/A1.3 shall be 1-hour fire-rated. See building review comment 7 above. Ref. 2012 IBC 107.2.1. On neither the reflected ceiling plan, sheet A2.0, nor the lighting plan, sheet E3.0, is an exit sign located above the exterior door in break room 168. Building “B” has an occupant load in excess of 50 people, therefore a second exit is required. The required exit cannot route through another building per “party wall” requirement in 706.1.1, and even if it could the proposed fire shutter (if approved by the Chief Building Official) would shut this path off in event of fire. There are exit signs missing from the reflected ceiling plan, sheet A2.0,that are correctly shown on the lighting plan, sheet E3.0. Please coordinate the disciplines so that the same information is shown on both plans. Ref. 2012 IBC 107.2.1. On the building section A/ A3.0 please show the fire-rated corridor walls extending to the underside of the roof deck. Even though detail 3/A1.0 is referenced, the information given shall match. Ref. 2012 IBC 107.2.1. Doors in type 4B (1-hour fire-rated) partitions must be shown in the Door Schedule on sheet A4.0 to be 20-minute fire-rated per Table 716.5 and self-closing per 716.5.9. Add both exit doors from building “B” to the Door Schedule showing appropriate exiting hardware. Ref. 2012 IBC 107.2.1. X-ray room doors and frames 158 and 159 must be lead lined and noted as such in the Door Schedule, sheet A4.0. Ref. 2012 IBC 107.2.1. Sections and details 2 and 3/A1.0, and 1/A1.3 indicate new R-38 ceiling insulation. Per the building envelope COMcheck the framing cavity is not exposed, meaning insulation is existing. Per 2012 IECC C101.4.3 exception 3 existing ceiling and wall cavities exposed during construction do not need to comply with the current code regarding insulation R-value as long as these cavities are filled with insulation. Please explain the new ceiling insulation shown in these details. The Doors and Windows Specification on sheet SP1 shall indicate the minimum prescriptive values for new glazed fenestration per 2012 IECC Table C402.3: Fixed fenestration: max. U-factor = 0.50, operable fenestration: max. U-factor = 0.65, entrance doors: max. U-factor = 0.83. Maximum SHGC = 0.25. Please add a lead-lined products Section to the specification sheets SP1 through SP3. Ref. 2012 IBC 107.2.1. Please submit a City of Tucson Special Inspections Certificate. |
| 03/04/2019 | KROBLES1 | WATER | REVIEW | Completed | |
| 03/04/2019 | PIMA COUNTY | PLUMBING-COMMERCIAL | REVIEW | Completed | |
| 03/04/2019 | PIMA COUNTY | ELECTRICAL-COMMERCIAL | REVIEW | Reqs Change | ELECTRICAL – COMMERCIAL The exterior door in the break room must be an exit. Add exit signs leading to and located above this door. Coordinate with Architect regarding this item. Ref. 2012 IBC 107.2.1. |
| 03/04/2019 | PIMA COUNTY | MECHANICAL-COMMERCIAL | REVIEW | Reqs Change | MECHANICAL – COMMERCIAL Please submit heating and cooling load calculations summary sheets for the two new RTU’s to justify the scheduled capacities. Ref. 2012 IMC 106.3.1. |