The International Residential Code 2003 hereby
adopted as the basic building code for Dorchester County, Maryland,
for one- and two-family dwellings, and each and all of the regulations,
provisions, conditions, penalties, and terms thereof are hereby referred
to, adopted, incorporated herein by reference and made a part of this
chapter as it fully set out in this chapter, with the additions, insertions
and deletions and changes more fully set forth in this chapter.
International Residential Code is amended as
follows:
A.
The following
section of the international residential code for one- and two-family
dwellings is hereby amended and replaced with the following:
[Amended 3-19-2013 by Bill No. 2013-1]
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Section R101.2 Scope. In the case of accessory
structures, the code shall only apply to such structures of 300 square
feet or greater. Additionally accessory structures from 300 square
feet up to 500 square feet are permitted to be installed upon the
following:
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1.
Slab. A reinforced concrete slab may be used. Minimum reinforcing
shall be standard six-inch-by-six-inch welded wire fabric. The slab
shall be placed on a firm gravel base and shall be built up or thickened
at the edge to prevent frost damage. Arrow Anchor Kit for Sheds (model
DKAK108) or Arrow Storage Sheds Concrete Anchor Kit (model AKI 00)
shall be used or equivalent anchoring system.
2.
Footings. A reinforced concrete or block and mortar footing and pier
may be used. The footing shall be a minimum of 24 inches in the ground
and a minimum of 24 inches by 24 inches and a minimum of 8 inches
thick. The Pier shall be a minimum of eight inches by 24 inches. The
footing shall be placed on a firm, undisturbed, earth base.
3.
Foundation wall. A foundation wall may be used for continuous support
around an accessory building. Such a wall may be reinforced concrete
or block and mortar and shall be placed on a continuous footing eight
inches wider than the block being used, with a minimum of eight inches
block to be used, and a minimum of 24 inches in the ground. The footing
shall be placed on a firm, undisturbed, earth base.
4.
Compated gravel base. A minimum of six inches of gravel compacted
by a vibrating tamperer shall be placed on a firm, undisturbed, earth
base.
5.
Anchorage. One of the following anchorage requirements shall be used
with the appropriate foundation.
a.
With slab. The structure shall be fastened to the slab by means of
anchored fasteners in the concrete. Arrow Anchor Kit for Sheds (model
DKAK108) or Arrow Storage Sheds Concrete Anchor Kit (model AK100)
shall be used or equivalent anchoring system.
b.
With footings or walls. With reinforced concrete the structure may
be fastened to anchored fasteners in the pier, foundation wall or
footings. With a block and mortar pier or wall the fasteners must
be anchored in the footing and not to the pier or wall alone.
c.
Buried anchors.
(1)
Screw anchors. Four-inch anchors set at least a minimum of two
feet in form earth may be used. DuraMax Storage Shed Corkscrew Anchor
Kit which consists of four screw-type anchors or Arrow Storage Sheds
Earth Anchor Kit (AK4) shall be used or equivalent anchoring system.
(2)
Concrete. Twenty-four-inch square by six-inch thick poured concrete
with no less than 16 inches of compacted earth, with embedded anchors
may be used. Arrow Anchor Kit for Sheds (model DKAK108) or Arrow Storage
Sheds Concrete Anchor Kit (model AK100) shall be used or equivalent
anchoring system.
6.
All prefabricated buildings must be secured by approved anchor straps.
Such straps (two) shall encompass the entire width of the prefabricated
building with said straps attached to anchors in the fastened manner.
DuraMax Storage Shed Corkscrew Anchor Kit which consists of four screw-type
anchors or Arrow Storage Sheds Earth Anchor Kit (AK4) shall be used
or equivalent anchoring system.
B.
Section R-102.2. Add the following:
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Section R102.2 Barriers for Swimming Pools,
Spas and Hot Tubs. The provisions for barriers for swimming
pools, spas and hot tubs contained in Appendix G, where required under
the Dorchester County Zoning Ordinance, shall apply in Dorchester
County.
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C.
Section R102.5.1. Prefabricated Construction: Add
in: "Appendix E is hereby expressly adopted."
D.
Section R105.1. Permit Required. Add following sentence
to last paragraph: "Ordinary repairs do not include roof replacement
or any interior or exterior structural changes."
E.
Section R105.5. Expiration: Delete and insert the
following:
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"Every permit issued by the building official
under provisions of this code shall expire by limitation and become
null and void if the building or work authorized by such permit is
not commenced within one year from the issuance date of the permit.
A permittee holding an unexpired permit may have said permit extended
for up to one additional year for good and satisfactory reason."
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F.
Section R106.2. Plans Required: A plot plan shall
be submitted only if required by the building official.
G.
Section R-108, Fees, is deleted and amended to read
as follows:
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R108.1 Fees. The County Council
shall establish a schedule of fees, charges and expenses and a collection
procedure for building permits issued pursuant to this chapter. Such
schedule shall be posted in the Office of Planning and Zoning and
may be altered or amended, from time to time, without a public hearing,
only by the County Council. Until all applicable fees, charges and
expenses have been paid in full, no permit shall be issued.
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R108.2 Costs of Emergency Repair. The costs incurred in the performance of emergency work shall be
paid from the treasury of the jurisdiction on approval of the Code
Official. Such costs shall be first liens on any land of the owner,
the same as County real estate taxes, and may be collected in the
same manner as County real estate taxes are collected or collected
by an action at law against the owner. Such cost shall be added to
the County real estate tax bill for the specific property of the owner
in which the costs were incurred.
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H.
New Section R109.5 is added to read:
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Section R109.5.1 Inspection. The
inspector shall have the authority but not the responsibility to require
correction of, or compliance with the Code, of any hazardous or life-threatening
condition.
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I.
Section R112.1. Right of Appeal: The Dorchester County
Board of Building Appeals shall be the body appointed to hear appeals.
J.
Section R113. Violations: The term "city" shall mean
"county."
K.
Section R113.4. Penalty: The following is added to
the end of the section: "The fine shall not exceed $1,000 and the
term of imprisonment shall not exceed 30 days, or both. Each and every
day such violation occurs shall be considered a separate offense."
L.
Section R114.1. Stop Work Orders: Delete the word
"gas."
M.
Section R403.1.1. Footings: Delete beginning with
"Minimum sizes" and insert "Minimum depth of footer shall be 24 inches
below finished natural grade or engineered fill. Minimum width of
footings is 16 inches. Minimum thickness of footings shall be eight
inches. All footings shall be continuous and shall contain a minimum
of two pieces of continuous No. 4 (one-half-inch) rebar, tied and
racked, and shall be a minimum 2,500 psi concrete."
N.
Section R404.2, including Table No. R403.1, Figure
R403.1(3) and Figure R403.1(2): Wood Foundation Walls: Deleted.
O.
Section R408.5. Finished Grade: This section should
be changed to read as follows: "The grade in the under-floor space
shall be as high as the outside finished grade. There shall be a minimum
distance of 24 inches from the top of the finished grade under floor
to the bottom of the floor joists."
P.
Section 504. Treated Wood Floors (on ground): Not
permissible under this code.
Q.
Section R605. Particleboard: Not permissible under
this code.
R.
Section R705.8.8. Sheet Metal: Delete paragraph beginning
with "Open roof valleys shall be provided of not less than 0.013 thickness
aluminum or 0.019 thickness copper and shall extend at least eight
inches from the center line each way. Sections of flashing shall be
jointed to provide an adequate water lock."
S.
Section R802.3. Framing Details: Add new paragraph
to read as follows: "All trusses and rafters shall be fastened with
approved truss ties (hurricane ties) in all areas of the County. Where
truss or rafter ties are used, conventional nailing is still required.
T.
Add new Section R803.2.4 to read as follows:
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Section R803.2.4 Roof Sheathing. Roof sheathing: rafters or trusses 24 inches on center or greater
shall be minimum of five-eighths-inch thick lumber or wood structural
panels.
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U.
Add to Chapter 27, Section P2718.1 the following:
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Section P2718.1. On all auto-washing
machines, a catch pan will be required on 2nd floor and subsequent
floors.
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V.
Add new Section AE101.1.4 to Appendix E to read as
follows:
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Section AE101.1.4 HUD Stickers. HUD sticker requirement; all manufactured homes placed in Dorchester
County shall meet the requirements of HUD and have HUD sticker affixed.
The sticker requirement applies to both nonrental and rental manufactured
homes.
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W.
Add new Section AE101.1.5 to Appendix E to read as
follows:
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AE101.1.5. Footings. Footings for
single- and double-wide manufactured homes; footers, piers are to
be dug 24 inches wide by 24 inches long by 24 inches deep or twenty-four-inch
augered hole 24 inches deep 2,500 psi concrete minimum; spacing of
footers will be per the manufacturers' specifications; footer inspection
will be completed prior to pouring of concrete; foundation piers may
be cast-in-place concrete 2,500 psi or concrete masonry units (block)
capped with four-inch solid masonry units (block) and spaced per manufacturers'
specifications; ground anchors shall be to manufacturers' specifications
for size and spacing, ties may be chain, straps or cable; perimeter
cosmetic foundation shall be required on double wides.
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X.
The following appendixes are hereby deleted from Chapter
43, Referenced Standards.
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APPENDIX A
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SIZING AND CAPACITIES OF GAS PIPING
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APPENDIX I
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PRIVATE SEWAGE DISPOSAL
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Section
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A101
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General
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APPENDIX J
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EXISTING BUILDINGS AND STRUCTURES
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Section
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AJ101
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Purpose and Intent
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AJ102
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Compliance
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AJ103
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Preliminary Meeting
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AJ104
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Evaluation of an Existing Building
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AJ105
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Permit
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AJ201
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Definitions
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AJ301
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Repairs
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AJ401
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Renovations
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AJ501
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Alterations
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AJ601
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Reconstruction
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APPENDIX K
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SOUND TRANSMISSION
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Section
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AK101
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General
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AK102
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Airborne Sound
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AK103
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Structural-borne Sound
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AK104
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Referenced Standards[1]
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[1]
Editor's Note: Former Subsection Y, regarding fire sprinkler
systems, added 12-21-2010 by Bill No. 2010-21, which immediately followed
this subsection, was repealed 5-19-2015 by Bill No. 2015-6. This bill
also provided that it would not apply to building permits for one-
and two-family dwellings filed on or before June 30, 2015.
