The provisions of Section 1301 of IEBC are adopted by reference with the following modifications:
1. Revise Section 1301.1 to read:
"1301.1 Scope.
The provisions of this chapter shall apply to alterations, additions and changes of occupancy to existing buildings, including historic buildings. The provisions of this chapter are intended to maintain or increase the current degree of public safety, health and general welfare in existing buildings while allowing alterations, additions and changes of occupancy without requiring full compliance with Chapters 6 through 12, except where compliance with other provisions of this code is specifically required in this chapter."
2. Add a new Section 1301.1.2 to read:
"1301.1.2 Minimum requirements.
Nothing in this chapter shall be interpreted to waive any requirement in the Chicago Minimum Requirements for Existing Buildings."
3. Revise Section 1301.2 to read:
"1301.2 Applicability.
Existing buildings in which there is work involving additions, alterations or changes of occupancy shall be made to conform to the requirements of this chapter or the provisions of Chapters 6 through 10. The provisions of Sections 1301.2.1 through 1301.2.5 shall apply to existing occupancies that will continue to be, or are proposed to be, in Groups A, B, E, F, M, R and S. These provisions shall not apply to buildings with occupancies in Group H or I."
4. Revise Section 1301.2.2 to read:
"1301.2.2 Partial change in occupancy.
Where a portion of the building is changed to a new occupancy classification and that portion is separated from the remainder of the building with fire barriers or horizontal assemblies having a fire-resistance rating as required by Table 508.4 of the Chicago Building Code for the separate occupancies, or with approved compliance alternatives, the portion changed shall be made to conform to the provisions of this section.
Where a portion of the building is changed to a new occupancy classification and that portion is not separated from the remainder of the building with fire barriers or horizontal assemblies having a fire-resistance rating as required by Table 508.4 of the Chicago Building Code for the separate occupancies, or with approved compliance alternatives, the provisions of this section which apply to each occupancy shall apply to the entire building. Where there are conflicting provisions, those requirements which secure the greater public safety shall apply to the entire building or structure."
5. Revise Section 1301.2.3 to read:
"1301.2.3 Additions.
Additions to existing buildings shall comply with the requirements of the Chicago Building Code for new construction. The combined height and area of the existing building and the new addition shall not exceed the height and area allowed by Chapter 5 of the Chicago Building Code. Where a fire wall that complies with Section 706 of the Chicago Building Code is provided between the addition and the existing building, the addition shall be considered a separate building."
6. Delete Section 1301.2.3.1.
7. Revise Section 1301.2.5 to read:
"1301.2.5 Escalators.
Where escalators are provided in below-grade transportation stations, existing and new escalators shall be allowed to have a clear width of less than 32 inches (815 mm)."
8. Revise Section 1301.3.1 to read:
"1301.3.1 Hazards.
Where the building official determines that an unsafe condition exists, the condition shall be abated as part of the proposed work."
9. Delete Section 1301.3.3.
10. Revise Section 1301.4 to read:
"1301.4 Investigation and evaluation.
For proposed work covered by this chapter, the building owner shall cause the existing building to be investigated and evaluated by a registered design professional in accordance with the provisions of Sections 1301.4 through 1301.9."
11. Revise Section 1301.4.2 to read:
"1301.4.2 Submittal.
A report containing the results of the investigation and evaluation as required in Section 1301.4 and proposed compliance alternatives shall be submitted to the building official."
12. Add a new Section 1301.4.4 to read:
"1301.4.4 Procedure.
The building official is authorized to establish procedures for the submission, review and acceptance of reports required under Section 1301.4.2 The building official may refer such reports to the Committee on Standards and Tests for review in accordance with Section 1004 of the Chicago Construction Codes Administrative Provisions. A permit application based on compliance with this chapter shall not be reviewed until the report has been accepted by the building official."
13. Revise Section 1301.6 to read:
"1301.6 Evaluation process.
The evaluation process specified herein shall be followed in its entirety to evaluate existing buildings in Groups A, B, E, F, M, R, S and U. Table 1301.7 shall be utilized for tabulating the results of the evaluation. References to other sections of this code or other codes indicate that compliance with those sections is required in order to gain credit in the evaluation.
In applying this section to a building with mixed occupancies, where the separation between the mixed occupancies does not qualify for any category indicated in Section 1301.6.16, the score for each occupancy shall be determined, and the lowest score determined for each section of the evaluation process shall apply to the entire building. Where the separation between the mixed occupancies qualifies for any category indicated in Section 1301.6.16, the score for each occupancy shall apply to each portion of the building based on the occupancy of the space."
13.1. Revise Section 1301.6.1 by adding a final sentence to read:
"The maximum score shall be used where the allowable height and number of stories is unlimited."
14. Revise the last two sentences of Section 1301.6.2 to read:
"In determining the area value, the maximum allowed positive value for area is 50 percent of the fire safety score as listed in Table 1301.8, Mandatory Safety Scores. The maximum score shall be used where the allowable area is unlimited."
15. Delete the last sentence of the first paragraph of Section 1301.6.4.
15.1. Revise Table 1301.6.4 by changing the value for Group R, category a from "-4" to "NP."
16. Delete the row for "I-2" in Table 1301.6.4.
17. Delete the row for "I-2" in Table 1301.6.5.
18. Revise item 3 in Section 1301.6.5.1 to read:
"3. Category c – 1-hour to less than 2-hour fire-resistance rating, with doors conforming to Section 716 of the Chicago Building Code or without corridors as allowed by Section 1020 of the Chicago Building Code."
19. Delete the last sentence of Section 1301.6.7.
20. Delete the last sentence of Section 1301.6.8.
21. Delete the row for "I-2" and note for "NP" in Table 1301.6.8.
21.1. Revise Section 1301.6.8.1, item 2 to read:
"2. Category b–Existing smoke detectors in HVAC systems and maintained in accordance with the Chicago Minimum Requirements for Existing Buildings."
22. Delete the row for "I-2" in Table 1301.6.9.
23. Revise item 4 in Section 1301.6.9.1 to read:
"4. Category d – Category c plus required voice communication systems that conform to Section 907.2.12.2 of the Chicago Building Code and a fire command center that conforms to Section 911 of the Chicago Building Code and contains voice communication system controls, and any other controls specified in Section 911 of the Chicago Building Code where those systems are provided."
24. Delete the row for "I-2" in Table 1301.6.10.
25. Delete the last sentence of item 5 in Section 1301.6.10.1.
26. Revise item 6 in Section 1301.6.10.1 to read:
"6. Category f – Each stairway shall be one of the following: a smokeproof enclosure in accordance with Section 1023.11 of the Chicago Building Code; pressurized in accordance with Appendix S of the Chicago Building Code; or shall have operable exterior windows."
27. Revise the first paragraph of Section 1301.6.11 to read:
"1301.6.11 Means of egress capacity and number.
Evaluate the means of egress capacity and the number of exits available to the building occupants. In applying this section, the means of egress are required to conform to the following sections of the Chicago Building Code: 1003.7, 1004, 1005, 1006, 1007, 1013, 1016.2, 1026.1, 1028.2, 1028.5, 1029.2, 1029.3 and 1029.4. The number of exits credited is the number that is available to each occupant of the area being evaluated. Existing fire escapes shall be accepted as a component in the means of egress when conforming to Section 504."
28. Revise Table 1301.6.11 by deleting "I-2."
29. Delete the row for "I-2" in Table 1301.6.12.
29.1. Revise Section 1301.6.12.1, item 1. to read:
"1. Category a – Dead-end corridors of a length allowed by Section 805.6."
30. Revise Section 1301.6.13, excluding Equation 13-6, to read:
"1301.6.13 Maximum exit access travel distance to an exit.
Evaluate the length of exit access travel to an exit complying with Section 1022 of the Chicago Building Code. Determine the appropriate points in accordance with the following equation and enter that value into Table 1301.7 under Safety Parameter 1301.6.13, Maximum Exit Access Travel Distance for means of egress and general safety. The maximum allowable exit access travel distance shall be determined in accordance with Section 1017.1 of the Chicago Building Code."
31. Revise Section 1301.6.14 to read:
"1301.6.14 Elevator control.
Evaluate the passenger elevator equipment and controls that are available to the fire department to reach all occupied floors. Emergency recall and in-car operation of elevators shall be provided in accordance with Chapter 4 of the Chicago Conveyance Device Code. Under the categories and occupancies in Table 1301.6.14, determine the appropriate value and enter that value into Table 1301.7 under Safety Parameter 1301.6.14, Elevator Control, for fire safety, means of egress and general safety. The values shall be zero for a single-story building."
32. Revise items 3 and 4 in Section 1301.6.14.1 to read:
"3. Category c – All elevators with Phase I emergency recall operation and Phase II emergency in-car operation as required by the Chicago Conveyance Device Code.
4. Category d – All meet Category c; or Category b where allowed to be without Phase I emergency recall operation and Phase II emergency in-car operation; and at least one elevator that complies with new construction requirements serves all occupied floors."
33. Delete the last sentence of Section 1301.6.16.
34. Delete the row for "I-2" and note for "NP" in Table 1301.6.16.
35. Revise item 3 in Section 1301.6.16.1 to read:
"3. Category c – Separations between occupancies having a fire-resistance rating at least one hour greater than required by Section 508.4 of the Chicago Building Code."
36. Revise Section 1301.6.17 to read:
"1301.6.17 Automatic sprinklers.
Evaluate the ability to suppress a fire based on the installation of an automatic sprinkler system in accordance with Section 903.3.1.1 of the Chicago Building Code. "Required sprinklers" shall be based on the requirements of this code. Under the categories and occupancies in Table 1301.6.17, determine the appropriate value and enter that value into Table 1301.7 under Safety Parameter 1301.6.17, Automatic Sprinklers, for fire safety, means of egress divided by 2, and general safety. High-rise buildings that undergo a change of occupancy shall be equipped throughout with an automatic sprinkler system in accordance with Section 403 of the Chicago Building Code and Chapter 9 of the Chicago Building Code."
37. Delete the row for "I-2" and note for "NP" in Table 1301.6.17.
38. Delete the row for "I-2" in Table 1301.6.18.
39. Revise Section 1301.6.19 to read:
"1301.6.19 Incidental uses.
Evaluate the protection of incidental uses in accordance with Section 509.4.2 of the Chicago Building Code. Do not include those where this code requires automatic sprinkler systems throughout the building including high- rise buildings. Assign the lowest score from Table 1301.6.19 for the building or floor area being evaluated and enter that value into Table 1301.7 under Safety Parameter 1301.6.19, Incidental Uses, for fire safety, means of egress and general safety. If there are no specific occupancy areas in the building or floor area being evaluated, the value shall be zero."
40. Delete Section 1301.6.20, its subsections and associated tables.
41. Delete Section 1301.6.21, its subsections and associated tables.
42. Revise Table 1301.7 to read:
TABLE 1301.7
SUMMARY SHEET – BUILDING CODE
SUMMARY SHEET – BUILDING CODE
Existing occupancy: | Proposed occupancy: |
Year building was constructed: | Number of stories above grade plane: |
Type of construction: | Height in feet: |
Percentage of open perimeter increase: % | Largest floor area per story: |
Compartmentation (Y/N): | Required door closers (Y/N): |
Corridor wall fire-resistance: | Vertical opening enclosure fire-resistance: |
Type of HVAC system: | number of floors served: |
Automatic fire detection (Y/N): | Type and location: |
Fire alarm system (Y/N): | Type: |
Smoke control (Y/N): | Type: |
Adequate exit routes (Y/N): | Dead ends (Y/N): |
Maximum exit access travel distance: | Elevator recall (Y/N): |
Means of egress emergency lighting (Y/N): | Type: |
Mixed occupancies (Y/N): | Incidental uses (Y/N): |
Automatic sprinkler system (Y/N): | Type: |
Standpipes (Y/N): | Type and location:
|
SAFETY PARAMETERS
|
FIRE SAFETY (FS) |
MEANS OF EGRESS (ME)
|
GENERAL SAFETY (GS)
|
SAFETY PARAMETERS
|
FIRE SAFETY (FS) |
MEANS OF EGRESS (ME)
|
GENERAL SAFETY (GS)
|
1301.6.1 Building height | |||
1301.6.2 Building area | |||
1301.6.3 Compartmentation | |||
1301.6.4 Tenant and dwelling unit separations | |||
1301.6.5 Corridor walls | |||
1301.6.6 Vertical openings | |||
1301.6.7 HVAC systems | |||
1301.6.8 Automatic fire detection | |||
1301.6.9 Fire alarm system | |||
1301.6.10 Smoke control | |||
1301.6.11 Means of egress | |||
1301.6.12 Dead ends | |||
1301.6.13 Maximum exit access travel distance | |||
1301.6.14 Elevator control | |||
1301.6.15 Means of egress emergency lighting | |||
1301.6.16 Mixed occupancies | |||
1301.6.17 Automatic sprinklers | ÷2 = | ||
1301.6.18 Standpipes | |||
1301.6.19 Incidental use | |||
Building score – total value | |||
(Amend Coun. J. 2-19-20, p. 14473, Art. IV, § 27; Amend Coun. J. 10-7-20, p. 21791, Art. IV, § 8)