§ 150.031  ADDITIONAL REQUIREMENTS.
   (A)   Minimum dwelling size as per 2012 IRC and IBC.
   (B)   All interior wall and ceiling surfaces shall be covered with a minimum of one-half inch gypsum wallboard or approved equal. Required fire rated assemblies shall comply with U.L. or other approved testing agency listing no backup is required for one inch nominal solid paneling. Exception: Three-season room.
   (C)   Special conditions and tests.  When special conditions exist or arise during construction which necessitate additional precautions, the Building Official may require work and testing in excess of these requirements at the expense of the owner.
   (D)   Site preparation.  No excavation, stripping of organic material or removal of vegetable matter shall be done before drawings with elevations are submitted and approved by the Will County Land Use Department.
   (E)   Dumpster and porta-john shall be placed on the job site to insure public safety, health and welfare per the adopted Illinois Plumbing Code. If a builder has multiple job sites within a subdivision, porta-john spacing of one unit per 500 lineal feet of roadway is permitted. Builders sharing porta-john facilities shall provide the county with a "letter of agreement to share such" for approval by Will County.
   (F)   When a kneewall is supporting two stories and a roof, the kneewall shall be constructed with minimum 2 x 6 studs at 16 inch on center with exterior sheathing per code.
   (G)   Approved construction documents (plans) must be on site for all inspections.
   (H)   In all commercial, industrial multi-tenant buildings, and residential multi-tenant buildings, a minimum two hour fire barrier shall be provided between tenant spaces.
   (I)   Fire blocking compounds shall have a flame spread rating no greater than 50 and comply with ASTM E-84. Approved fireplace caulk, noncombustible mineral wool or rock wool is acceptable but in no case shall fiberglass insulation or drywall compound be used as a fire or draft stop.
   (J)   Gutters and down spouts must be provided on all buildings. Install gutters and down spouts unless the building official specifically permits omission. All exterior doors shall be protected from roof runoff by a continuous gutter and downspout or as approved by the Building Official.
   (K)   All spaces between a chimney and floors or ceilings through which the chimney passes must be fire blocked with noncombustible material and installed as per Building Official.
   (L)   A mansard roof must be fire blocked at the corners to prevent fire from engulfing the perimeter of the building sheathing, plus access inspection panels shall be provided.
   (M)   All manufactured fireplace-box shaft-walls shall be covered with 5/8" X type drywall and fire taped. Walls surrounding manufactured fire boxes shall be provided with insulation with an R-value equal to exterior wall insulation and fire blocked per manufacturers specifications.
   (N)   Effective erosion control practices shall be followed during all earth moving, storage and placement operations so as to prevent sediments from leaving the site and as required by the Building Official. In addition, the construction process shall be so organized and conducted so as to prevent equipment from dragging or carrying mud or dirt onto public streets. Where this may accidentally occur, the builder or his/her responsible agent shall immediately clean the road surface. Silt fence when required, and shall be maintained until final site work is installed.
   (O)   Address.  Each structure to which a street number has been assigned shall have a permanent number displayed directly on the structure in a position easily observed and readable from the public right-of-way. The minimum size of the numerals shall be 6" by ½".  Block numerals only, not script.
   (P)   In no case shall drywall or gypsum board be allowed to be installed beneath exterior finished material unless specifically designed by the manufacturer for that purpose. Exception: Where a fire rated wall or barrier is required or manufacturers specifications specifically require the product.
   (Q)   Spark arrestor shall be installed for all solid fuel burning fireplaces or stoves and constructed in accordance with R1003.9.1., IBC 2111.13.1, and IMC 903.
   (R)   Where brick flashings are installed, the product shall be a minimum of 20 mil thick.
   (S)   Existing buildings converted to commercial use or interior buildouts shall provide a minimum one accessible parking space, route and entrance. Accessible spaces shall be 16 feet wide with 11-foot parking and a 5-foot access aisle.
   (T)   All load bearing wood framed walls shall be provided with double top plates.
   (U)   Rooms containing a tub and/or shower shall be provided with a non-absorbent finish surface a minimum 12 inches above the shower head and the entire shower enclosure installed with approved cement board or equal.
   (V)   Safety glazing shall be installed when adjacent to window seats, ledges, seat boards, and all similar installations.
   (W)   Modular offices shall have a minimum 12" x 42" trench foundation below grade and insulation shall meet the 2012 Illinois Energy Code.
   (X)   Wood or composite decks shall be anchored to the building structural framing per approved design. Concrete or other piers shall not be installed within the new foundation over dig unless extended to bearing soil.
   (Y)   All exterior exposed lumber shall be pressure treated or naturally decay resistant.
   (Z)   Concrete patios shall be anchored appropriately to the building foundation.
   (AA)   Installation of a material, product, or method not required by building code shall meet pertinent code sections.
   (BB)   Where I-Joists are installed over a basement and/or crawl space, the entire ceiling shall be covered with ½ inch drywall or approved alternate method.
   (CC)   The use of metal "T" shaped or flat metal straps shall not be permitted in wood frame construction.
   (DD)   Additional construction requirements:
      (1)   Accessory structure walls within five feet of property line shall have 5/8" X Type drywall applied to walls within five feet and complete ceiling.
      (2)   Five-eighths inch plywood/OSB roof sheathing for rafters or trusses placed at 24 inches on center.
      (3)   Seven-sixteenths inch minimum wall bracing it choosing that option.
      (4)   Seven-sixteenths inch minimum roof sheathing for rafters or trusses placed 16 inches on center.
      (5)   Three-quarter inch tongue and groove floor sheathing. Exception: match existing.
      (6)   Cement board or equal as barrier behind tubs and showers.
      (7)   Provide accessory structure ventilation per roofing manufacture's specifications.
      (8)   Wood foundations below grade are prohibited.
      (9)   Eight inch minimum foundation wall thickness, 12 inches for trench foundation.
   (EE)   It is the express intent of this code that 2012 IRC section R313 not be adopted.
(Ord. 14-103, passed 5-15-2014; Am. Ord. 18-115, passed 5-17-2018; Am. Ord. 18-116, passed 5-17-2018)  Penalty, see § 150.999