Exterior Wall Thickness Wisconsin Legislature




A bituminous coating applied in accordance with the manufacturer’s instructions. Acrylic-modified cement applied at a minimum rate of 3 pounds per square yard. Floors shall support all dead loads plus the minimum unit live loads as set forth in s.  When a concrete floor is placed in clay soils, a 4-inch thick base course shall be placed in the subgrade consisting of clean graded sand, gravel or crushed stone.

When a concrete floor is placed on sand or gravel soils, the base course may be omitted unless drain tile is installed. If drain tile is installed, the requirements of s. Slab-on-grade concrete garage floors shall be at least 4 inches thick and placed over at least 4 inches of granular fill. Where the joists of a floor system are parallel to, and located between bearing walls above and below, the joists shall be doubled.

Floor joists on masonry walls with a solid top course. Floor joists on masonry walls with open top course. Where anchor bolts are used on masonry walls with an open top course, the minimum width of an individual piece making up the sill plate shall be at least 5.5 inches.

Wood girders and beams shall be fitted at the post or column. Adjoining ends shall be fastened to each other to transfer horizontal loads across the joint. Beams shall also be fastened to the posts with framing anchors, angle clips, or equivalent. Where intermediate beams are used, they shall rest on top of the girders; or shall be supported by ledgers or blocks fastened to the sides of the girders; or they may be supported by approved metal hangers into which the ends of the beams shall be fitted.

The beam is more than 11.25 inches deep using actual measurement.

Wisconsin Legislature

Wood joists supported on wood or metal shall have a bearing surface of at least 1½-inches measured from the end of the joist. Wood joists supported on masonry or concrete shall have a bearing surface of at least 3 inches measured from the end of the joist.

The tail end of a floor joist may not extend past the edge of a beam by more than the depth of the floor joist.

Bearing surface for engineered wood products shall be in accordance with the manufacturer’s instructions provided those instructions were developed through structural analysis or product testing and are applicable to the configuration.

Notching and boring of beams or girders is prohibited unless determined through structural analysis. Where floor joists are notched on the ends, the notch shall not exceed ¼ the depth of the joist. Notches over supports may extend the full bearing width of the support. A hole may not be bored in a floor joist within 2 inches of a notch or another hole. In no case shall the distance between adjacent holes be less than the diameter of the larger hole. Holes bored in floor joists that are not within 2 inches of the top or bottom of the joist shall have their diameter limited to 1/3 the depth of the joist.

Notching or boring of engineered wood products shall be done in accordance with the manufacturer’s instructions provided those instructions were developed through structural analysis or product testing.

Joist overhangs parallel to the main floor framing system.

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