SPS 321.125(3)(b) (b) A reduction of at least 80% of the potential sediment load in storm water runoff from the site on an average annual basis as compared with no sediment or erosion controls for the site when the land disturbing construction activity involves one or more acres.
SPS 321.125(3)(c) (c) A reduction of at least 40% of the potential sediment load in storm water runoff from the site on an average annual basis as compared with no sediment or erosion controls for the site where less than one acre of land disturbing construction activity is to occur.
SPS 321.125 Note Note: See appendix for further explanatory material regarding compliance solutions for 80 and 40% reductions.
SPS 321.125(4) (4)Soil loss analysis. Potential soil loss shall be determined using an engineer analytical modeling acceptable to the department.
SPS 321.125 Note Note: The Revised Universal Soil Loss Equation II is an example of an acceptable model to determine soil loss.
SPS 321.125(5) (5)Monitoring.
SPS 321.125(5)(a)(a) The owner or owner's agent shall check the erosion and sediment control practices for maintenance needs at all the following intervals until the site is stabilized:
SPS 321.125(5)(a)1. 1. At least weekly.
SPS 321.125(5)(a)2. 2. Within 24 hours after a rainfall event of 0.5 inches or greater. A rainfall event shall be considered to be the total amount of rainfall recorded in any continuous 24 hour period.
SPS 321.125(5)(a)3. 3. At all intervals cited on the erosion and sediment control plan.
SPS 321.125(5)(b) (b) The owner or owner's agent shall maintain a monitoring record when the land disturbing construction activity involves one or more acres.
SPS 321.125(5)(c) (c) The monitoring record shall contain at least the following information:
SPS 321.125(5)(c)1. 1. The condition of the erosion and sediment control practices at the intervals specified under par. (a).
SPS 321.125(5)(c)2. 2. A description of the maintenance conducted to repair or replace erosion and sediment control practices.
SPS 321.125(6) (6)Maintenance.
SPS 321.125(6)(a)1.1. Except as provided in subd. 3., off-site sediment deposition resulting from the failure of an erosion or sediment control practice shall be cleaned up by the end of the next day.
SPS 321.125 Note Note: Contact the Department of Natural Resources before attempting to clean up any sediment deposited or discharged into the waters of the state.
SPS 321.125(6)(a)2. 2. Except as provided in subd. 3., off-site soil deposition, resulting from construction activity, that creates a nuisance shall be cleaned up by the end of the work day.
SPS 321.125(6)(a)3. 3. A municipality may enact more stringent requirements regarding cleanup of soil or sediment deposition onto public ways.
SPS 321.125(6)(b)1.1. Except as required in subd. 2., the owner or owner's agent shall complete repair or replacement of erosion and sediment control practices as necessary within 48 hours of an interval specified under sub. (5).
SPS 321.125(6)(b)2. 2. When the failure of erosion or sediment control practices results in an immediate threat of sediment entering public sewers or the waters of the state, procedures shall be implemented immediately to repair or replace the practices.
SPS 321.125 Note Note: See Appendix for further explanatory material.
SPS 321.125 History History: Cr. Register, September, 1992, No. 441, eff. 12-1-92; am. (1) (b), Register, November, 1995, No. 479, eff. 12-1-95; am. (1) (a), renum. (1) (b) to (e) to be (1) (c) to (f) and am. (c), cr. (1) (b), Register, February, 1997, No. 494, eff. 3-1-97; CR 02-077: cr. (4) Register May 2003 No. 569, eff. 8-1-03; CR 05-113: r. and recr. Register December 2006 No. 612, eff. 4-1-07.
SPS 321.126 SPS 321.126Storm water management. Storm water management practices shall be employed in accordance with s. NR 151.12 and maintained when the land disturbing construction activity involves one or more acres.
SPS 321.126 Note Note: Authority over storm water management at construction sites, including all authority for all the requirements in this section, was consolidated within the Department of Natural Resources (DNR) under 2013 Wis. Act 20, sections 2088 and 2089. Consequently, the Department of Safety and Professional Services no longer administers the requirements in this section. Information regarding the DNR permit requirements and standards may be available at http://dnr.wi.gov/topic/stormwater/construction.
SPS 321.126 History History: CR 05-113: cr. Register December 2006 No. 612, eff. 4-1-07.
SPS 321.13 SPS 321.13 Excavations adjacent to adjoining property.
SPS 321.13(1)(1) Notice. Any person making or causing an excavation which may affect the lateral soil support of adjoining property or buildings shall provide at least 30 days written notice to all owners of adjoining buildings of the intention to excavate. The notice shall state that adjoining buildings may require permanent protection.
SPS 321.13(1)(a) (a) Exception. The 30-day time limit for written notification may be waived if such waiver is signed by the owner(s) of the adjoining properties.
SPS 321.13(2) (2)Responsibility for underpinning and foundation extensions.
SPS 321.13(2)(a)(a) Excavations less than 12 feet in depth. If the excavation is made to a depth of 12 feet or less below grade, the person making or causing the excavation shall not be responsible for any necessary underpinning or extension of the foundations of any adjoining buildings.
SPS 321.13(2)(b) (b) Excavations greater than 12 feet in depth. If the excavation is made to a depth in excess of 12 feet below grade, the owner(s) of adjoining buildings shall be responsible for any necessary underpinning or extension of the foundations of their buildings to a depth of 12 feet below grade. The person making or causing the excavation shall be responsible for any underpinning or extension of foundations below the depth of 12 feet below grade.
SPS 321.13 History History: Cr. Register, November, 1979, No. 287, eff. 6-1-80.
SPS 321.14 SPS 321.14 Excavations for footings and foundations.
SPS 321.14(1)(1) Excavations below footings and foundations. No excavation shall be made below the footing and foundation unless provisions are taken to prevent the collapse of the footing or foundation.
SPS 321.14(2) (2)Excavations for footings. All footings shall be located on undisturbed or compacted soil, free of organic material, unless the footings are reinforced to bridge poor soil conditions.
SPS 321.14 History History: Cr. Register, November, 1979, No. 287, eff. 6-1-80.
subch. IV of ch. SPS 321 Subchapter IV — Footings
SPS 321.15 SPS 321.15 Footings.
SPS 321.15(1)(1) General.
SPS 321.15(1)(a)(a) The dwelling and attached structures, such as decks and garages, shall be supported on a structural system designed to transmit and safely distribute the loads to the soil.
SPS 321.15(1)(b) (b) The loads for determining the footing size shall include the weight of the live load, roof, walls, floors, pier or column, plus the weight of the structural system and the soil over the footing.
SPS 321.15(1)(c) (c) Footings shall be sized to not exceed the allowable material stresses.
SPS 321.15(1)(d) (d) The bearing area shall be at least equal to the area required to transfer the loads to the supporting soil without exceeding the bearing capacity of the soil.
SPS 321.15(1)(e) (e) Structures supported on floating slabs or similar shallow foundations may not be physically attached to structures that are supported by footings that extend below the frost line unless an isolation joint is used between the structures. This isolation shall extend for the full height of the structure.
SPS 321.15(2) (2)Size and type. Unless designed by structural analysis, unreinforced concrete footings shall comply with the following requirements:
SPS 321.15(2)(a) (a) Continuous footings. The minimum width of the footing on each side of the foundation wall shall measure at least 4 inches wider than the wall. The footing depth shall be at least 8 inches nominal. Footing placed in unstable soil shall be formed. Lintels may be used in place of continuous footings when there is a change in footing elevation.
SPS 321.15 Note Note: Unstable soil includes soils that are unable to support themselves at a 90 degree angle for the full depth of the footing.
SPS 321.15(2)(b) (b) Column or pier footing.
SPS 321.15(2)(b)1.1. The minimum width and length of column or pier footings shall measure at least 2 feet by 2 feet.
SPS 321.15(2)(b)2. 2. The minimum depth of column or pier footings shall measure at least 12 inches nominal.
SPS 321.15(2)(c) (c) Trench footings. Footings poured integrally with the wall may be used when soil conditions permit. The minimum width shall be at least 8 inches nominal.
SPS 321.15(2)(d) (d) Chimney and fireplace footings. Footing for chimneys or fireplaces shall extend at least 4 inches on each side of the chimney or fireplace. The minimum depth shall measure at least 12 inches nominal.
SPS 321.15(2)(e) (e) Floating slabs. Any dwelling supported on a floating slab on grade shall be designed through structural analysis.
SPS 321.15(2)(f) (f) Deck footings. Decks attached to dwellings and detached decks which serve an exit shall be supported on a structural system designed to transmit and safely distribute the loads to the soil. Footings shall be sized to not exceed the allowable material stresses. The bearing area shall be at least equal to the area required to transfer the loads to the supporting soil without exceeding the bearing values of the soil.
SPS 321.15(3) (3)Soil-bearing capacity. No footing or foundation shall be placed on soil with a bearing capacity of less than 2,000 pounds per square foot unless the footing or foundation has been designed through structural analysis. The soil-bearing values of common soils may be determined through soil identification.
SPS 321.15 Note Note: The department will accept the soil-bearing values for the types of soil listed in the following table: - See PDF for table PDF
SPS 321.15(3)(a) (a) Minimum soil-bearing values. If the soil located directly under a footing or foundation overlies a layer of soil having a smaller allowable bearing value, the smaller soil-bearing value shall be used.
SPS 321.15(3)(b) (b) Unprepared fill material, organic material. No footing or foundation shall be placed upon unprepared fill material, organic soil, alluvial soil or mud unless the load will be supported. When requested, soil data shall be provided.
SPS 321.15 Note Note: The decomposition of organic material in landfill sites established for the disposal of organic wastes may produce odorous, toxic and explosive concentrations of gas which may seep into buildings through storm sewers and similar underground utilities unless provisions are taken to release the gases to the atmosphere.
SPS 321.15 History History: Cr. Register, November, 1979, No. 287, eff. 6-1-80; am. (1) (a), Register, January, 1989, No. 397, eff. 2-1-89; cr. (1) (f), Register, March, 1992, No. 435, eff. 4-1-92; am. (1) (e), Register, November, 1995, No. 479, eff. 12-1-95; am. (1) (e), Register, March, 2001, No. 543, eff. 4-1-01; CR 08-043: renum. (intro.), (1) and (2) to be (1), (2) and (3) and am. (1), (2) (b) and (e), cr. (1) (e) Register March 2009 No. 639, eff. 4-1-09.
SPS 321.16 SPS 321.16 Frost protection.
SPS 321.16(1)(1) General.
SPS 321.16(1)(a)(a) Except as allowed under sub. (2), footings and foundations, including those for ramps and stoops, shall be placed below the frost penetration level or at least 48 inches below adjacent grade, whichever is deeper.
SPS 321.16(1)(b) (b) Footings may not be placed on frozen material.
SPS 321.16(2) (2)Exceptions.
SPS 321.16(2)(a)(a) Frost protected shallow foundations shall be designed in accordance with ASCE–32 as adopted in Table 320.24-5.
SPS 321.16(2)(b) (b) Portions of footings or foundations located directly under window areaways do not require frost protection provided the rest of the foundation is protected in accordance with this section.
SPS 321.16(2)(c) (c) Footings and foundations may bear directly on bedrock less than 48 inches below adjacent grade provided all of the following conditions are met.
SPS 321.16(2)(c)1. 1. The rock shall be cleaned of all earth prior to placement.
SPS 321.16(2)(c)2. 2. All clay in crevices of the rock shall be removed to the level of frost penetration or to 1.5 times the width of the rock crevice, whichever is less.
SPS 321.16(2)(c)3. 3. Provisions shall be taken to prevent water from collecting anywhere along the foundation.
SPS 321.16 Note Note: See Appendix for further information.
SPS 321.16 History History: Cr. Register, November, 1979, No. 287, eff. 6-1-80; am. (intro.), Register, February, 1985, No. 350, eff. 3-1-85; renum. (intro.) and (1) to be (1) and (2) and am. (2) (d), cr. (2) (e), Register, January, 1989, No. 397, eff. 2-1-89; am. (1), Register, November, 1995, No. 479, eff. 12-1-95; correction in (2) (e) made under s. 13.93 (2m) (b) 7., Stats., Register, March, 2001, No. 543; CR 08-043: r. and recr. Register March 2009 No. 639, eff. 4-1-09; correction in (2) (a) made under s. 13.92 (4) (b) 7., Stats., Register December 2011 No. 672.
SPS 321.17 SPS 321.17 Drain tiles.
SPS 321.17(1)(1) Determination of need.
SPS 321.17(1)(a)(a) New construction.
SPS 321.17(1)(a)1.1. Except as provided under sub. (2), a complete drain tile or pipe system shall be installed around the foundation of dwellings under construction where groundwater occurs above the bottom of the footing.
SPS 321.17(1)(a)2. 2. For the purposes of this section, a complete drain tile or pipe system includes all of the following:
SPS 321.17(1)(a)2.a. a. The drain tile or pipe installed inside and outside the foundation, except as allowed under s. SPS 321.17 (3) (d) 1. b.
SPS 321.17(1)(a)2.b. b. Bleeders connecting the inside tile or pipe to the outside tile or pipe.
SPS 321.17(1)(a)2.c. c. The sump pit or crock.
SPS 321.17(1)(a)2.d. d. The discharge piping.
SPS 321.17(1)(a)2.e. e. A pump or other means of discharging water to grade.
SPS 321.17(1)(b) (b) Optional systems.
SPS 321.17(1)(b)1.1. If a complete drain tile or pipe system is not required by natural conditions under par. (a) or by a municipality or registered UDC inspection agency, a partial drain tile or pipe system may be installed.
SPS 321.17(1)(b)2. 2. For the purposes of this section, a partial drain tile or pipe system includes a means of discharging water from the tile or pipe and may include any of the other elements under par. (a) 2.
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Published under authority of s. 35.93, Stats. Updated on the first day of each month. Entire code is alwaycurrent. The date shown on each chapter is the date the chapter was last published.