Is there an industry standard or code specification for acceptable deviation from level for new wood-framed floors? Something along the lines of, some fraction of an inch over a span of some number of feet. Thanks.
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Kali
Not sure of junk's source but here is the NAHB spec
3–3–3 Observation: A wood subfloor is out of level.
Performance Guideline: The floor should not slope more than 1/2 inch in 20 feet. Crowns and other lumber characteristics that meet the standards of the applicable grading organization for the grade and species used are not defects. Deflections due to overloading by the consumer are not the contractor’s responsibility.
Remodeling Specific Guideline: The contractor and the consumer may agree to build an addition out of level in order to keep the floor of an addition on the same plane, and the roof ridge on the same line, as those of an existing, out-of- level structure, or to compensate for some other preexisting condition.
Corrective Measure: The contractor will make a reasonable and cost- effective effort to modify the floor to comply with the performance guideline.
My builder used 1/8" in 4
My builder used 1/8" in 4 feet, which is how far off his level was.