2012 International Existing Building Code. Jim Tinner, Building Official City of Bellingham May 15, 2013

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1 2012 International Existing Building Code Jim Tinner, Building Official City of Bellingham May 15, 2013

2 Adopted by State Law IEBC is referenced by the International Building Code. Does not apply to single-family homes, duplexes or townhouses. Use must be requested by the permit applicant.

3 Historic Building Provisions The IEBC treats historic buildings differently than other existing buildings. To be deemed a Historic Building, the structure must be eligible to be placed on a historic register. There is some local discretion regarding that eligibility.

4 Historic Building Provisions Provides some flexibility for existing narrow hallways, stairways or corridors. The code official may approve such components when it is determined that the overall exit capacity of the building is safe.

5 Historic Building Provisions When multiple exits are provided for large assembly spaces, the main exit door may be allowed to swing inward.

6 Historic Building Provisions In buildings 3 stories or less, fire rated stairway enclosures are not required however. Stairway enclosures need tight fitting doors to limit the passage of smoke.

7 Historic Building Provisions When one-hour fire restive assemblies are normally required, they are allowed to be omitted where existing wall and ceiling finishes are lath plaster.

8 Historic Building Provisions Grand stairways which are not deemed structurally dangerous are allowed to maintain existing handrails and guardrails. Replacement handrails and guardrails may be placed in original configurations.

9 Historic Building Provisions When an accessible entrance at the main entry is not feasible, an alternate accessible entrance is allowed.

10 Prescriptive Compliance Method When a change of occupancy classification is made, there is a great deal of latitude offered for existing non-conforming building components provided they do not present a distinct danger.

11 Prescriptive Compliance Method When additional exits are required due to a change of occupancy, and when conventional stairs cannot be installed, a fire escape is allowed.

12 Fire Escapes Cannot be accessed through a window. Cannot be accessed by a ladder. May only be used for up to 50% of required exits.

13 Fire Escapes Cannot be accessed through a window. Cannot be accessed by a ladder. May only be used for up to 50% of required exits.

14 Fire Escapes May only be used where exterior stairs are impossible due to; Lot lines, sidewalks, alleys, or roads which preclude the ability to install properly sized exit stairs.

15 Fire Escapes The lowest landing of a fire escape must be between 7 and 12 above grade except; When above alleys less than 30 wide, the lowest landing must be no lower than 12 above grade. There are several technical construction requirements for fire escapes.

16 Change of Occupancy The IEBC incorporates several tables that detail which occupancies are more hazardous than other occupancies. When the change is to a less hazardous occupancy, several building code requirements for new buildings are modified or waived.

17 Change of Occupancy When a partial change of occupancy occurs such as when one tenant expands into a neighboring space, and if the space would require fire sprinklers, only the expansion area would need to be sprinklered.

18 Alterations The IEBC defines three levels of alterations beginning with Level 1. Each successive alteration level builds upon the preceding level.

19 Alterations Level 1 Limited to replacement of finishes, equipment, elements or fixtures with new items serving the same purpose as those replaced items.

20 Alterations Level 1 When gas fueled appliances are changed the fuel pipe need not meet sizing requirements for new buildings provided the total BTU load is not increased.

21 Alterations Level 1 Existing restrooms are not required to be made handicap accessible when there is a structural element that would make such modifications technically infeasible.

22 Alterations Level 1 When equipment is being replaced, only gravity loads need to be considered. Seismic (lateral) forces do not need to be analyzed. Re-roofing where there are unbraced parapets may require that bracing be added to the parapet.

23 Alterations Level 2 When a space is reconfigured, new equipment added, door or window locations changed, new equipment added, or when any service systems are extended.

24 Alterations Level 2 Dead end corridor allowable length increases from 20 to 35 in non-sprinklered buildings. Dead end corridor length may be increased from 50 to 70 in sprinklered buildings.

25 Alterations Level 2 In buildings that would require fire spinklers under current code, only the floor area being altered need be considered. Fire sprinklers in such areas need only be installed when the work covers more than 50% of the floor.

26 Alterations Level 2 When more than one exit is required above the first floor, a fire escape shall be accepted as a second exit. This language means that the jurisdiction has no choice but to allow a fire escape in Level 2 alteration projects.

27 Alterations Level 2 Alterations that increase seismic or wind load on existing elements do not drive a requirement to analyze the entire structure unless: The increase is more than 10% of the existing structure s demand/capacity ratio.

28 Alterations Level 3 A Level 3 alteration is where the work area exceeds 50% of the building area.

29 Alterations Level 3 Must meet all requirements of a Level 2 alteration but also gain advantage of most of a Level 2 alteration s allowances. Some structural retrofit may be required in our Seismic Design Category.

30 Alterations Level 3 Structural retrofits are usually required when the alteration involves structural work for at least 30% of the floor or roof area. The 30% limit is cumulative and includes all alterations over a 5 year period.

31 For more information contact Jim Tinner, City of Bellingham Building Official (360) International Existing Building Code