Wisconsin Administrative Code
Department of Agriculture, Trade and Consumer Protection
ATCP 90-139 - Trade and Consumer Protection
Chapter ATCP 92 - Weights And Measures
Subchapter IV - Vehicle and Livestock Scales
Section ATCP 92.30 - Vehicle and livestock scales; permits, construction, and testing

Current through August 26, 2024

(1) VEHICLE SCALE; PERMIT REQUIRED.

(a) No person may install or relocate a vehicle scale without a permit from the department.

(b) A person shall apply for a permit under par. (a) in writing, on a form provided by the department. The application shall include all of the following:
1. A nonrefundable application fee of $65, if the application pertains to a vehicle scale.

2. A construction plan for the vehicle scale.

(c) An application under par. (b) shall document that the vehicle scale complies with the construction standards in sub. (3).

(d) The department shall grant or deny a permit application under par. (b) within 20 business days after the department receives a complete application. The department may deny an application if the applicant begins to install or relocate the vehicle scale while the permit application is still pending approval.

Note: A permit application form under sub. (1) (b) may be obtained at https://datcp.wi.gov/Pages/Programs_Services/WeightsAndMeasures.aspx or by writing to:

Wisconsin Department of Agriculture, Trade and Consumer Protection

Division of Trade and Consumer Protection

Weights & Measures Program

P.O. Box 8911

Madison, WI 53708-8911.

(2) MASTER CONSTRUCTION PLAN. Instead of filing a separate construction plan with each permit application under sub. (1), an applicant may file a master construction plan which applies to 2 or more applications, and may refer to that master plan in each individual application. If a proposed installation or relocation entails any deviation from the master plan, the individual permit application shall clearly describe every deviation.

(3) VEHICLE AND LIVESTOCK SCALES; CONSTRUCTION STANDARDS. Except as provided under sub. (6) or (9), every vehicle scale and every livestock scale shall comply with the following construction standards:

(a) Load-bearing piers. The main load-bearing piers supporting a scale shall be constructed of reinforced concrete. The main load-bearing piers shall be poured so that they are monolithic with the scale walls, or shall be tied to the walls with 1/2 inch (1.2 cm) reinforcing rods.

(b) Scale walls.
1. The walls of every scale shall be constructed of reinforced concrete. The side walls of every scale, other than a livestock scale constructed prior to January 1, 1992, shall be not less than 12 inches (30 cm) thick. The end walls of every scale shall be not less than 16 inches (40 cm) thick, except that end walls of a livestock scale or above-ground scale shall be not less than 12 inches thick.

2. Throughout every scale wall, 1/2 inch (1.2 cm) reinforcing rods shall be placed vertically on no more than 12 inch (30 cm) centers, and horizontally on no more than 18 inch (45 cm) centers.

3. A vehicle scale end wall, if poured with seams or joints, shall be constructed with a step at the outer edge to provide support for the vehicle approach slab unless the approach slab consists of reinforced concrete which is poured monolithically with the end wall and joined to the end wall with reinforcing rods. The step shall extend for the entire length of the end wall, and shall be at least 6 inches (15 cm) wide and 6 inches (15 cm) deep.

(c) Foundations.
1. Load-bearing piers and scale walls shall rest on reinforced concrete footings which extend at least 12 inches (30 cm) below the frost line, or on a reinforced concrete base slab not less than 12 inches (30 cm) thick. Footings and slabs which support load-bearing piers or scale walls shall be constructed according to the manufacturer's engineering drawings, and shall be constructed to prevent frost heaving.

2. Scale pit floors and surfaces underlying above-ground vehicle scales shall be constructed of concrete, and shall be constructed so that they are well drained. The concrete floor or surface shall extend the full length and width of the scale. This subdivision does not apply to above-ground scales constructed prior to January 1, 1992.

3. A load-bearing concrete surface underlying an above-ground vehicle scale shall rest on a bed of compacted aggregate which is at least 6 inches (15 cm) thick under every portion of the load-bearing concrete surface, or on an alternative foundation constructed according to the manufacturer's engineering drawings. This subdivision does not apply to above-ground scales installed prior to January 1, 1992.

(d) Top edge of scale wall. The top inside edge of every scale wall shall be framed, for its entire length, with a structural steel angle iron coping. The angle iron shall be at least 2 inches (5 cm) by 2 inches (5 cm) by 1/4 inch (.6 cm), and shall be constructed with welded projections so that it can be anchored in the concrete at approximately 4 foot (1.2 meter) intervals.

(e) Clearances around scales.
1. In every scale pit, there shall be a clearance of not less than 6 feet (1.8 meters) between the finished floor line of the scale pit and the top edge of the pit coping, or a clearance of not less than 48 inches (1.2 meters) between the finished floor line of the scale pit and the bottom of the load receiving element, the bottom of the beam supporting the load receiving element, or the top of the fully electronic load receiving element. The clearance between the load receiving element and the coping of every scale pit wall shall be not less than 1/2 inch (1.2 cm) and not more than 3/4 inch (1.8 cm).

2. In every above-ground vehicle scale, there shall be a clearance of not less than 6 inches (15 cm) between the top surface of the base slab and the bottom of the load receiving element. This subdivision does not apply to above-ground scales constructed prior to January 1, 1992.

3. In a scale pit containing a lever-type weighing element, there shall be a clearance of at least 27 inches (70 cm) on one side of the transverse lever between the transverse lever and the pit neck wall.

(f) Mechanical indicating elements; support. Mechanical indicating elements, including weigh beams and dials, shall be placed on reinforced concrete footings or metal structural members which are sufficiently strong to prevent deflection.

(g) Scale pit entrance. Every scale pit shall include an entrance through which persons may enter the scale pit. The entrance shall take one of the following forms:
1. In a scale pit containing a lever-type weighing element, a square opening in the pit neck, with dimensions of at least 22 inches (58 cm) by 22 inches (58 cm).

2. An opening, at least 24 inches (60 cm) in diameter, in the scale platform.

3. An opening in the pit wall, not less than 36 inches (90 cm) wide. The top of the opening shall be no lower than the bottom of the weigh bridge, and the bottom of the opening shall be approximately even with the pit floor.

(h) Approach surfaces. Entry and exit approaches to a vehicle scale shall be at least as wide as the scale platform and at least 1/2 the length of the scale platform. Where it meets the end wall of a scale, each approach shall be supported on a step in the top of the end wall as provided under par. (b). Extending for the first 10 feet from the scale, each approach surface shall be on the same plane with the scale platform and shall be constructed of reinforced concrete, compacted asphaltic materials, steel grating, or structural steel plate of sufficient strength to withstand all loads equal to the concentrated load capacity of the scale. The remainder of the approach surface shall be constructed of a durable material and shall have a slope of not more than 1:12 (vertical rise/horizontal run). The approach shall be constructed and maintained to drain away from the scale, to provide easy vehicle access to the scale, and to provide easy access by the department or a scale service company to test compliance with s. ATCP 92.02(1).

(i) Livestock scales; test weight unloading platform. A concrete test weight unloading platform shall be constructed and maintained next to every livestock scale. The test weight unloading platform shall be at least 10 feet (3 meters) long and 8 feet (2.4 meters) wide. The test weight unloading platform shall be on the same level and plane as the scale platform. The test weight unloading platform shall be situated so that a test truck can easily lower test weights onto the test weight unloading platform, and so that test weights can easily be moved from the test weight unloading platform to the scale platform.

(4) VEHICLE AND LIVESTOCK SCALES; TOLERANCES. Vehicle and livestock scales installed or relocated under sub. (1) shall comply with acceptance tolerances under s. ATCP 92.02 throughout the period starting with the first date of use and ending 90 days after the department first receives notice under sub. (5) that the scale is in use. After that initial period, the scale shall comply with applicable tolerances under s. ATCP 92.02.

(5) VEHICLE AND LIVESTOCK SCALES; INSTALLATION REPORT. If a person installs or relocates a vehicle or livestock scale, that person shall report the completed installation or relocation to the department within 5 days after the installation or relocation is completed. The report shall be filed in writing and shall include all of the following:

(a) The number of the permit under sub. (1) that authorized the scale installation or relocation, if the scale is a vehicle scale.

(b) The date of installation or relocation, and the location at which the scale was installed or to which the scale was relocated.

(c) The name of the scale manufacturer, the brand name of the scale, and the model or serial number of the scale.

(d) The capacity of the scale.

(e) The sectional capacity of the scale if the scale was constructed before January 1, 1989, or the concentrated load capacity of the scale if the scale was manufactured on or after January 1, 1989.

(f) A scale test report showing that the scale was tested and correct before it was put into use. The scale test shall comply with sub. (7).

(g) A statement indicating whether the scale was sold in connection with the installation or relocation. If the scale was sold, the report shall include the name and address of the buyer and seller, and shall indicate the date of sale.

(6) VEHICLE SCALES; CONSTRUCTION VARIANCES.

(a) The department may grant a variance from a construction requirement under sub. (3) if the department determines that the variance is justified by special circumstances and will not compromise the structural integrity or accuracy of the scale. The department may impose any conditions on the variance, including alternative construction requirements, which it considers necessary.

(b) A person applying for a variance under par. (a) shall submit the application in writing, on a form provided by the department. The application shall include all of the following:
1. A detailed written justification for the variance. The justification shall demonstrate that the proposed variance is justified by special circumstances and will not compromise the structural integrity or accuracy of the scale.

2. A nonrefundable variance application fee of $150.

(c) The department may deny a variance application under par. (b) if the requester begins construction in violation of any requirement under sub. (3) before the department grants a variance from that requirement.

Note: A variance application form under sub. (6) (b) may be obtained at https://datcp.wi.gov/Pages/Programs_Services/WeightsAndMeasures.aspx or by writing to:

Wisconsin Department of Agriculture, Trade and Consumer Protection

Division of Trade and Consumer Protection

Weights & Measures Program

P.O. Box 8911

Madison, WI 53708-8911.

(7) VEHICLE AND LIVESTOCK SCALES; ANNUAL TESTING.

(a) The owner or operator of a vehicle or livestock scale with a weighing capacity of 5,000 pounds or more that is used for the commercial weighing of commodities or livestock shall at least annually cause the scale to be inspected and tested for accuracy by a person licensed under s. ATCP 92.20(1). The person performing the inspection and test shall prepare a written inspection and test report for the scale owner or operator.

(b) If a report under par. (a) shows that a scale is inaccurate, the scale may not be used until a person licensed under s. ATCP 92.20(1) re-inspects and retests the scale and delivers a written report to the scale owner or operator confirming that the inaccuracy has been corrected.

(c) The owner or operator of a vehicle or livestock scale shall file with the department a copy of each report prepared in connection with the inspection or testing of that scale, including any report required under par. (a) or (b), not more than 15 days after the owner or operator receives the test report and not more than 30 days after the reported inspection or test occurred.

(d) If the department finds that a vehicle scale operator who is required to be licensed under s. ATCP 92.31(1) has failed to file a vehicle scale inspection or test report as required by par. (c), the department shall assess against that operator a license surcharge of $200. The department may not issue or renew an annual license under s. ATCP 92.31(1) if the operator fails to include the amount of any unpaid surcharge assessed under this paragraph with the operator's annual license application. The department may suspend or revoke an annual license if the license holder fails to pay a surcharge assessed under this paragraph within 120 days after the department assesses the surcharge. A surcharge payment under this paragraph does not relieve a vehicle scale operator of any other civil or criminal liability for violating sub. (1), but is not evidence of a violation.

Note: The testing and reporting requirements under sub. (7) (a) to (c) apply to all vehicle scales and livestock scales. However the license surcharge under par. (d) applies only to vehicles scales whose operators are required to be licensed under s. ATCP 92.31(1). See surcharge authorization in s. 98.16(3m) (c), Stats. Violations by vehicle scale or livestock scale operators are also subject to penalties under s. 98.26, Stats.

(8) REJECTION NOTICE. A department weights and measures inspector or a municipal weights and measures sealer may issue a rejection notice under s. 98.05(2), Stats., prohibiting the commercial use of a vehicle or livestock scale which does not comply with this section.

(9) EXEMPTIONS. Subsections (1) to (6) do not apply to any of the following:

(a) A vehicle scale that is used for less than one year at the same location.

(b) Portable vehicle scales installed with all of the following:
1. Durable load bearing foundations that comply with the vehicle scale manufacturer's engineering drawings and specifications.

2. Durable vehicle approaches that provide adequate drainage away from the scale and easy access for the department or a scale service company to test compliance with s. ATCP 92.02(1).

3. Durable approach bulkheads that provide a barrier between the scale's weighing element, approach material, and run off.

(c) A vehicle scale used exclusively for highway construction if that use is supervised by the state of Wisconsin department of transportation.

Scales identified under sub. (9) are not exempt from s. ATCP 92.02, from licensing requirements under s. 98.16, Stats., or from the testing requirement under s. 98.16(3m), Stats.

Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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