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<br />SECTION R320
<br />PROTECTION AGAINST TERMITES
<br />termite protection labeled for use as a preventative treatment of
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<br />new construction (see Section 202, Registered Termiticide).
<br />Upon completetion of the application of the termite protective
<br />treatment, a certificate of compliance shall be issued to the
<br />building department by the licensed pest control company that
<br />contains the following statement: "The building has recieved a
<br />complete treatment for the prevention of subterranean termites.
<br />Treatment is in accordance with rules and laws established by
<br />the Florida Department of Agriculture and Consumer Services."
<br />foundation perimeter shall be done after all excavation,
<br />backfilling and compaction is complete.
<br />R320.1.2 If soil treatment is used for subterranean termite
<br />prevention, soil area disturbed after initial chemical soil
<br />treatment shall be retreated with a chemical soil treatment,
<br />including spaces boxed or formed.
<br />R320.1.3 If soil treatment is used for subterranean termite
<br />prevention, space in concrete floors boxed out or formed for
<br />the subsequent installation of plumbing traps, drains or any
<br />other purpose shall be created by using plastic or metal
<br />permanently placed forms of sufficient depth to eliminate any
<br />planned soil disturbance after initial chemical soil treatment.
<br />R320.1.4 If soil treatment is used for subterranean termite
<br />prevention, chemically treated soil shall be protected with a
<br />minimum 6 mil vapor retarder to protect against rainfall
<br />dilution. If rainfall occurs before vapor retarder placement,
<br />retreatment is required. Any work, including placement of
<br />reinforcing steel, done after chemical treatment until the
<br />concrete floor is poured, shall be done in such manner as to
<br />avoid penetrating or disturbing treated soil.
<br />R320.1.5 If soil treatment is used for subterranean termite
<br />prevention, concrete overpour or mortar accumulated along
<br />the exterior foundation perimeter shall be removed prior to
<br />exterior chemical soil treatment, to enhance vertical
<br />penetration of the chemicals.
<br />R320.1.6 If soil treatment is used for subterranean termite
<br />prevention, chemical soil treatments shall also be applied
<br />under all exterior concrete or grade within 1 foot (305 mm)
<br />of the primary structure sidewalls. Also, a vertical chemical
<br />barrier shall be applied promptly after construction is
<br />completed, including initial landscaping and irrigation/sprinkler
<br />installation. Any soil disturbed after the chemical vertical
<br />barrier is applied shall be promptly retreated.
<br />R320.1.7 If a registered termiticide formulated and registered
<br />as a bait system is used for subterranean termite prevention,
<br />Sections R320.1.1 through R320.1.6 do not apply;
<br />however, a signed contract assuring the installation,
<br />maintenance and monitoring of the baiting system for a
<br />minimum of five years from the issue of the certificate of
<br />occupancy shall be provided to the building official prior to
<br />the pouring of the slab, and the system must be installed
<br />prior to final building approval. If the baiting system directions
<br />for use require a monitoring phase prior to installation of the
<br />pesticide active ingredient, the installation of the monitoring
<br />phase components shall be deemed to constitute installation
<br />of the system.
<br />R320.1.8 If a registered termiticide formulated and registered
<br />as a wood treatment is used for subterranean termite
<br />prevention, Sections R320.1.1 through R320.1.6 do not apply.
<br />Application of the wood treatment termiticide shall be as
<br />required by label directions for use, and must be completed
<br />prior to final building approval.
<br />R320.2 Penetration. Protective sleeves around metallic piping
<br />penetrating concrete slab -on -grade floors shall not be of
<br />cellulose -containing materials and, if soil treatment is used for
<br />subterranean termite protection, shall recieve application of a
<br />termiticide in annular space between sleeve and pipe.
<br />R320.3 Cleaning. Cells and cavities in masonry units and air
<br />gaps between brick, stone or masonry ri k veneers and the structure
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<br />shall be cleaned of all nonpreservative treated or nonnaturally
<br />durable wood, or other cellulose -containing material prior to
<br />concrete placement.
<br />Exception: Inorganic material manufactured for closing
<br />cells in foundation concrete masonry unit construction or
<br />clean earth fill placed in concrete masonry unit voids below
<br />slab level before termite treatment is performed.
<br />R320.4 Concrete bearing ledge. Brick, stone or other veneer
<br />shall be supported by a concrete bearing ledge at least equal to
<br />the total thickness of the brick, stone or other veneer, which is
<br />poured integrally with the concrete foundation. No supplemental
<br />concrete foundatin pours which will create a hidden cold
<br />joint shall be used without supplemental treatment in the
<br />foundation unless there is an approved physical barrier. An
<br />approved physical barrier shall also be installed from below the
<br />wall sill plate or first block course horizontally to embed in a
<br />mortar joint. If masonry veneer extends below grade, a termite
<br />protective treatment must be applied to the cavity created
<br />between the veneer and the foundation, in lieu of a physical
<br />barrier.
<br />Exception: Veneer supported by a shelf angle or lintel
<br />secured to the foundation sidewall in accordance with
<br />ACI 530/ASCE 5/TMS 402, provided at least a 6-inch
<br />(152 mm) clear inspection space of the foundation
<br />sidewall exterior exist between the veneer and the top
<br />of any soil, sod, mulch or other organic landscaping
<br />component, deck, apron, porch, walk or any other work
<br />immediately adjacent to or adjoining the structure.
<br />R320.5 Pressure preservatively treated and naturally
<br />resistant wood. Heartwood of redwood and eastern red cedar
<br />shall be considered termite resistant. Pressure preservatively
<br />treated wood and naturally termite -resistant wood shall not
<br />be used as a physical barrier unless a barrier can be inspected
<br />for any termite shelter tubes around the insides and outside
<br />edges and joints of a barrier.
<br />R320.5.1 Field treatment. Field cut ends, notches and
<br />drilled holes of pressure preservatively treated wood
<br />shall be retreated in the field in accordance with
<br />AWPA M4.
<br />R320.6 Foam plastic protection. Extruded and expanded
<br />polystyrene, polyisocyanurate and other foam plastics shall
<br />not be installed on the exterior face or under interior or
<br />exterior foundation walls or slab foundations located below
<br />grade. The clearance between foam plastics installed above
<br />grade and exposed earth shall be at least 6 inches (152 mm).
<br />Exceptions:
<br />1. Buildings where the structural members of walls,
<br />floors, ceilings and roofs are entirely of
<br />noncombustible materials or pressure preservatively
<br />treated wood.
<br />2. When in addition to the requirements of Section
<br />R320.1 an approved method of protecting the foam
<br />plastic and structure from subterranean termite
<br />damage is provided.
<br />3.On the interior side of basement walls.
<br />R320.7 Protection against decay and termites. Condensate
<br />lines and roof downspouts shall discharge at least I foot (305
<br />mm) away from the structure sidewall, whether by tinder
<br />ground piping, tail extension or splash blocks. Gutters with
<br />downspouts are required on all buildings with eaves of less thact
<br />6 inches (152 mm) horizontal projection except for gable end
<br />rakes or on a roof above another roof.
<br />R320.8 Preparation of building site and removal of debris®
<br />R320.8.1 All building sites shall be graded to provide
<br />drainage under all portions of the building not
<br />occu ied by basements.
<br />R32 .8.2 The foundation and the area encompassed.
<br />within 1 foot (305 mm) therein shall have all vegetation,
<br />stumps, dead roots, cardboard, trash and foreign
<br />material removed and the fill material shall be free of
<br />vegetation and foreign material. The fill shall be
<br />compacted to assure adequate support of the foundation®
<br />R320.8.3 After all work is completed, loose wood and
<br />debris shall be completely removed from under the building
<br />and within 1 foot (305 mm) thereof. All wood forms and
<br />supports shall be completely removed. This includes, but is
<br />not limited to: wooden grade stakes, forms, contraction
<br />spacers, tub trap boxes, plumbing supports, bracing, shoring,.
<br />forms or other cellulose -containing material placed in any
<br />location where such materials are not clearly visible and readily
<br />removable prior to completion of the work. Wood shall not be
<br />stored in contact with the ground under any building.
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