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(A) Minimum specifications. The following specifications set forth the minimum acceptable design for the construction of the following portions of post-frame buildings within the city:
(3) Siding, roofing, and trim;
(4) Entrance doors;
(6) Overhead doors;
(7) Insulation; and
(8) Miscellaneous accessories.
(1983 Code, § 6-102)
(1) Post-frame buildings for use for human occupancy.
(a) All concrete foundations and frostwalls must meet or exceed the requirements set forth in the most recent edition of the International Building Code for size, strength, depth, and anchor bolts.
(b) Termite shield and sill sealer must be installed between the foundation and foundation plate.
(c) The foundation plate must be a 4-inch by 6-inch timber and of adequate strength to resist twisting between the vertical columns.
(d) An 11-gauge galvanized steel T-plate or its equal shall be used to tie vertical columns to the foundation plate.
(2) Post-frame for storage only.
(a) The hole for every post must be at least 14 inches in diameter and extend to a depth of at least 4 feet 5 inches (or to undisturbed earth if undisturbed earth is only to be found at a greater depth).
(b) A precast concrete pad of at least 12 inches in diameter and 5 inches thick (or an amount of concrete mix poured in the hole, having the equivalent or greater dimensions) must be placed at the base of every hole.
(c) Dirt must be backfilled into each hole around the post or column set therein and must be compacted.
(1983 Code, § 6-103)
(C) Framing for post-frame buildings both for use for human occupancy and for storage only.
(1) The post used for framing a post-frame building shall be of SYP, shall be treated with CCA or some equivalent or better treatment, shall be at least 6 inches by 6 inches in dimension, shall be spaced at 7 feet 6 inches on center at side walls (those walls supporting the roof system) and shall be spaced at no more than 10 feet 0 inches on center on end walls.
(2) One row of 2-inch by 8-inch center-match SYP splash boards which have been treated with CCA or some equivalent or better treatment shall be fastened around the entire base of the building with 16d galvanized ring-shank nails.
(3) Construction-grade girt boards made of 2-inch by 6-inch SPF No. 2 of lumber having equivalent or greater strength shall be spaced to obtain a 20 pounds per square foot windload in conjunction with other bracing and siding.
(4) Continuous 2-inch by 6-inch SPF No. 2 construction-grade lumber or lumber having equivalent or greater strength shall serve as truss-support boards in conjunction with 2-inch by 6-inch SPF truss-block system. Truss-support boards shall be fastened to columns with 60d oil-quenched, hardened steel, ring-shank nails.
(5) Pre-engineered trusses shall be spaced 7 feet 6 inches on center. The minimum load- bearing capacity for pre-engineered trusses shall be 30 pounds per square foot live load on the top chord, 5 pounds per square foot dead load on the top chord, and 6 pounds per square foot dead load on the bottom chord. All building permit applications must be accompanied by drawings sealed by an architect registered in this state and must show no less than these loads and spacings. Trusses shall be fastened at each column with 60d ring-shank nails and with a minimum of one 1/2-inch diameter bolt at each end.
(6) For load-bearing capacity:
(a) Post-frame buildings for use for human occupancy. All trusses at the ends of post- frame buildings shall be braced with 2-inch by 6-inch SPF corner bracing diagonally. At other than the ends of post-frame buildings, all trusses shall be braced with 2-inch by 4-inch SPF per truss engineer’s specifications. Additional bracing must be used where necessary to maintain a load-bearing capacity of 40 pounds per square foot live load and 30 pounds per square foot dead load on the roof and sides of a post-frame building; or
(b) Post-frame buildings for storage only. All trusses at the ends of post-frame buildings shall be braced with 2-inch by 6-inch SPF corner bracing diagonally. At other than the ends of post- frame buildings, all trusses shall be braced with 2-inch by 4-inch SPF per truss engineer’s specifications. Additional bracing must be used where necessary to maintain a load-bearing capacity of 30 pounds per square foot live load and 20 pounds per square foot dead load on the roof and sides of a post-frame building.
(7) Purlins shall consist of 2-inch by 4-inch SPF No. 2 construction-grade lumber or lumber of equivalent or greater strength and shall be spaced on center 2 feet 0 inches. Each purlin shall be fastened to the trusses with 60d oil-quenched, hardened steel, ring-shank nails. The end of each purlin shall lap the end of the next purlin, and the ends of those overlapping purlins shall be tied together with two 16g galvanized ring-shank nails.
(8) All interior walls and the ceilings shall be striped with 2-inch by 4-inch SPF No. 2 construction-grade lumber or lumber of equivalent or greater strength and shall be spaced 2 feet 0 inches on center application of the interior finish. The 2-inch by 4-inch timbers used in the ceiling must be set in approved metal joist hangers.
(1983 Code, § 6-104)
(D) Siding, roofing, and trim.
(1) Standard siding, roofing, and trim shall be used on all post-frame buildings. This standard siding, roofing, and trim shall be made from 29-gauge steel having a yield-strength of 80,000 psi, coated on both sides with at least a G60 galvanized coating, and having at least a 20-year warranty on the finish.
(2) Trims must be made of the same gauge and grade of steel as the roofing and siding on post- frame buildings. Post-frame buildings shall incorporate a base trim on all side walls. Eave trim shall be installed at the top of the side wall steel on eave sides. Outside corner trim having dimensions of 5 inches by 5 inches shall be installed on all corners. Flashing trims shall be installed at all windows and service door openings. Jamb trims at sliding and overhead doors shall wrap the wooden jambs. Doorstop flashings shall seal around overhead doors. A form-fitted or straight-design ridge cap with foam-fitted closure strips shall be used.
(3) Side wall sheet steel shall be nailed to posts, purlins, and trusses with galvanized ring-shank nails with neoprene washers. Roof sheet steel shall be fastened to wood purlins by self-drilling screws with neoprene washers.
(1983 Code, § 6-105)
(E) Entrance doors. The frame for each entrance door shall be a standard heavy metal frame having a gauge of at least 16. All door panels for an entrance door shall consist of 24-gauge steel. Each entrance door shall be hung with 3 hinges. Each entrance door shall have an insulated core rather than a hollow core. Each entrance door shall be equipped with a standard key-in-knob lock set.
(1983 Code, § 6-106)
(F) Windows. All windows used in post-frame buildings shall be 1 of the following designs: standard aluminum, thermal break frame, insulated glass, horizontal sliders, single-hung, or fixed picture.
(1983 Code, § 6-107)
(1) Insulation board must be fire-rated at 1 hour.
(2) Fiberglass-type insulation shall meet the requirements of the most recent edition of the International Building Code.
(1983 Code, § 6-108)
(Ord. 2818, passed 9-10-98) Penalty, see § 151.999