Minn. R. agency 151, ch. 1311, pt. 1311.0502 - SECTION 502, ADDITIONS
Section
502.1
Scope. IEBC section 502.1 is amended to read
as follows:
502.1
Scope.
Repairs, as defined in IEBC chapter 2, include the patching, restoration, or
replacement of worn or damaged materials, elements, equipment, or fixtures for
the purpose of maintaining such components in good or sound condition with
respect to existing loads or performance requirements.
Subpart 1.
Section 502.4 Existing
structural elements carrying gravity load.
IEBC section 502.4 is amended to read as follows:
502.4
Existing structural elements
carrying gravity load. Any existing gravity load-carrying structural
element for which an addition and its related alterations cause an increase in
design dead, live, or snow load, including snow drift effects, that increases
the demand-capacity ratio to more than 105 percent, shall be replaced or
altered as needed to carry the gravity loads required by the International
Building Code for new structures. The evaluation of demand-capacity ratios and
calculation of design gravity loads, forces, and capacities shall account for
the cumulative effects of additions and alterations since original
construction. Any existing gravity load-carrying structural element whose
vertical load-carrying capacity is decreased as a part of the addition and its
related alteration shall be considered an altered element subject to the
requirements of IEBC section 503.3. Any existing element that will form part of
the lateral load path for any part of the addition shall be considered an
existing lateral load-carrying structural element subject to the requirements
of IEBC section 502.5.
Subp.
1a.
Section 502.5 Existing structural elements carrying
lateral load.
The first exception to IEBC section 502.5 is amended to read as follows:
1. Any existing lateral
load-carrying structural element for which an addition causes an increase in
demand-capacity ratio to no more than 110 percent shall be permitted to remain
unaltered. For purposes of calculating demand-capacity ratios, the demand shall
consider applicable load combinations with design lateral loads or forces in
accordance with IBC section 1609. For purposes of this exception, comparisons
of demand-capacity ratios and calculation of design lateral loads, forces, and
capacities shall account for the cumulative effects of additions and
alterations since original construction..
Subp. 2.
Section 502.6 Smoke alarms in
existing portions of a building.
IEBC section 502.6 is amended to read as follows:
502.6
Smoke alarms in existing
portions of a building
Where an addition is made to a building or structure of a Group R or 1-1 occupancy, the existing building shall be provided with smoke alarms in accordance with the Minnesota Building Code, chapter 1305.
Notes
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