(A) All structures built under this chapter shall have a termite shield, properly installed therein, which shall be copper, aluminum or heavy roofing.
(B) Use following minimum table for floor joists:
Size | Spacing | Maximum Span
|
2" x 8" | 16" | 12'2" |
2" x 10" | 16" | 14' |
2" x 2" | 16" | 18' |
(C) Use following minimum table for ceiling joists:
Size | Spacing
|
Maximum Span
|
2" x 4" | 16" | 10' |
2" x 6" | 16" | 14' |
2" x 8" | 16" | 16' |
2" x 10" | 16" | 20' |
(D) Truss construction must be of a standard approved design, or as approved by an Illinois licensed structural engineer and certified by such engineer.
(E) Bridging must be used on all joist spans over eight feet (8') and must not be more than eight feet (8') on center.
(F) Headers over windows and door openings must comply with the following table:
Size
|
Maximum Span
|
Two 2 x 4s on edge | 3'6" |
Two 2 x 6s on edge | 6' |
Two 2 x 8s on edge | 8' |
Two 2 x 10s on edge | 12' |
For longer spans, laminated plywood, concrete lintels or steel beams are permissible upon certification of an Illinois licensed architectural or structural engineer.
(G) All dwelling houses shall be constructed with outside siding over storm sheeting; provided, however, that private garages may have single wall construction.
(H) Use the following minimum table on rafter centers:
Size
|
Center
|
Length
|
2" x 4" | 16" | 10' |
2" x 6" | 16" | 20' |
2" x 6" | 24" | 16' |
2" x 8" | 16" | 22' |
2" x 8" | 24" | 18' |
(I) All masonry walls shall be interlocked at the corners. In all masonry walls of more than twenty five feet (25') in length, pilasters shall be placed midway, and not more than twenty feet (20') apart.
(J) 1. The outside walls of all masonry buildings shall be at least eight inches (8") thick. In the case of a second story supported by such wall, the first floor wall shall be at least twelve inches (12") thick.
2. In any building having an excess of two (2) stories, or the equivalent in height, structural walls and supports shall be in conformity with a certificate of an Illinois licensed structural engineer.
(K) Where wood construction comes in contact with concrete or masonry construction, a termite shield of three (3) ounces copper or aluminum or heavy duty roll roofing with at least a one-half inch (1/2") overlap shall be provided.
(L) All freestanding carports shall be supported by at least a four inch by four inch (4" x 4") pillar, placed at least every eight feet (8'), and secured with gusset plates. Three inch (3") pipe may be used, if placed every eight feet (8') and anchored in thirty inches (30") of concrete, or busing one inch by one-half inch (1" x 1/2") strap anchors imbedded in concrete. Roof rafters of such freestanding carports shall comply with the rafter regulations herein provided for other roofs, or in the event that fiberglass is used, such sheets shall be at least one-eighth inch (1/8") thickness and shall be placed on rafters of approved strength, as determined by the building inspector. (Ord. 267, 9-27-1961)