ADOPTS WITH AMENDMENTS:

International Existing Building Code 2009 (IEBC 2009)

Heads up: There are no amended sections in this chapter.
Level 1 alterations as described in Section 403 shall comply with the requirements of this chapter. Level 1 alterations to historic buildings shall comply with this chapter, except as modified in Chapter 11.

An existing building or portion thereof shall not be altered such that the building becomes less safe than its existing condition.

Exception: Where the current level of safety or sanitation is proposed to be reduced, the portion altered shall conform to the requirements of the International Building Code.
In flood hazard areas, alterations that constitute substantial improvement shall require that the building comply with Section 1612 of the International Building Code.
All newly installed interior wall and ceiling finishes shall comply with Chapter 8 of the International Building Code.
New interior floor finish, including new carpeting used as an interior floor finish material, shall comply with Section 804 of the International Building Code.
All newly installed interior trim materials shall comply with Section 806 of the International Building Code.
All new work shall comply with materials and methods requirements in the International Building Code, International Energy Conservation Code, International Mechanical Code, and International Plumbing Code, as applicable, that specify material standards, detail of installation and connection, joints, penetrations, and continuity of any element, component, or system in the building.

The following sections of the International Fuel Gas Code shall constitute the fuel gas materials and methods requirements for Level 1 alterations.

  1. All of Chapter 3, entitled "General Regulations," except Sections 303.7 and 306.
  2. All of Chapter 4, entitled "Gas Piping Installations," except Sections 401.8 and 402.3.

2.1. Sections 401.8 and 402.3 shall apply when the work being performed increases the load on the system such that the existing pipe does not meet the size required by code. Existing systems that are modified shall not require resizing as long as the load on the system is not increased and the system length is not increased even if the altered system does not meet code minimums.

3. All of Chapter 5, entitled "Chimneys and Vents."

4. All of Chapter 6, entitled "Specific Appliances."

Alterations shall be done in a manner that maintains the level of fire protection provided.

603.2 Major Alterations

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In addition to the requirement in section 603 automatic sprinkler systems may be required in buildings undergoing major alterations per section 102.2.1.1

604.1 General

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604.1 General

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Alterations shall be done in a manner that maintains the level of protection provided for the means of egress, and in accordance with section 102.2.2.1.

605.1 General

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605.1.1 Entrances

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605.1.2 Elevators

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605.1.3 Platform Lifts

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605.1.4 Ramps

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605.1.5 Dining Areas

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605.1.6 Performance Areas

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605.1.7 Jury Boxes and Witness Stands

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605.1.8 Accessible Dwelling or Sleeping Units

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605.1.9 Type A Dwelling or Sleeping Units

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605.1.10 Toilet Rooms

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605.1.11 Dressing, Fitting and Locker Rooms

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605.1.12 Fuel Dispensers

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605.1.13 Thresholds

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605.1.14 Extent of Application

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605.1 General

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Accessibility requirements shall be in accordance with 521 CMR. Elevator and platform lift installation requirements are per 524 CMR.

605.2 Alterations Affecting an Area Containing a Primary Function

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This section has been amended at the state or city level.
Where alteration work includes replacement of equipment that is supported by the building or where a reroofing permit is required, the provisions of this section shall apply.

606.2 Addition or Replacement of Roofing or Replacement of Equipment

AMENDMENT
This section has been amended at the state or city level.

Where addition or replacement of roofing or replacement of equipment results in additional dead loads, structural components supporting such reroofing or equipment shall comply with the gravity load requirements of the International Building Code.

Exceptions:
  1. Structural elements where the additional dead load from the roofing or equipment is not increased by more than 5 percent. The cumulative effect of the load increase since original construction shall be considered.
  2. Buildings constructed in accordance with the International Residential Code or the conventional construction methods of the International Building Code and where the additional dead load from the roofing or equipment is not increased by more than 5 percent. The cumulative effect of the load increase since original construction shall be considered.
  3. Addition of a second layer of roof covering weighing 3 pounds per square foot (0.1437 kN/m2) or less over an existing, single layer of roof covering.

606.2.1 Wall Anchors for Concrete and Masonry Buildings

AMENDMENT
This section has been amended at the state or city level.
Where a permit is issued for reroofing on a building assigned to Seismic Design Category B, C, D, E, or F with a structural system consisting of concrete or reinforced masonry walls with a flexible roof diaphragm or unreinforced masonry walls with any type of roof diaphragms, the work shall include installation of wall anchors at the roof line to resist the reduced International Building Code level seismic forces as specified in Section 101.5.4.2 of this code and design procedures of Section 101.5.4, unless an evaluation demonstrates compliance of existing wall anchorage.
The requirements of this section shall apply to alteration work requiring reroof permits.

606.3.1 Bracing for Unreinforced Masonry Bearing Wall Parapets

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This section has been amended at the state or city level.
Where a permit is issued for reroofing for more than 25 percent of the roof area of an unreinforced masonry bearing wall building assigned to Seismic Design Category B, C, D, E, or F that has parapets constructed of masonry, the work shall include installation of parapet bracing to resist the reduced International Building Code seismic forces as specified in Section 101.5.4.2 of this code, unless an evaluation demonstrates compliance of such items.
Exception: If the maximum height of an unbraced unreinforced masonry parapet above the lower of either the level of tension anchors or the roof sheathing does not exceed a height-to-thickness ratio of 2.5, then bracing is not required.

606.3.2 Roof Diaphragms Resisting Wind Loads in High- Wind Regions

AMENDMENT
This section has been amended at the state or city level.
Where roofing materials are removed from the entire roof diaphragm of a building located where the basic wind speed is 115 mph or greater and the occupancy category is type IV as defined in Table 1604.5 of 780 CMR, roof diaphragms and connections that are part of the main wind-force resisting system shall be evaluated for the wind loads specified in 780 CMR, including wind uplift. If the diaphragms and connections in their current condition do not comply with those wind provisions, they shall be replaced or strengthened in accordance with the loads specified in 780 CMR.
Level 1 alterations to existing buildings or structures are permitted without requiring the entire building or structure to comply with the energy requirements of the International Energy Conservation Code or International Residential Code. The alterations shall conform to the energy requirements of the International Energy Conservation Code or International Residential Code as they relate to new construction only.
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