ONTARIO
PROVINCIAL
STANDARD
SPECIFICATION
METRIC
OPSS 531
DECEMBER 1990
CONSTRUCTION SPECIFICATION FOR
TREATMENT AND STOCKPILING OF SCREENED SAND FOR WINTER SANDING
TABLE OF CONTENTS
531.01
SCOPE
531.02
REFERENCES
531.05
MATERIALS
531.05.01
.02
.03
General
Sand
Crushed Rock Salt
531.06
EQUIPMENT
531.07
CONSTRUCTION
531.07.01
.02
.03
.04
.05
General
Mixing of Salt and Sand
Stockpiling
Weighing of Materials
Volume of Materials
531.09
MEASUREMENT FOR PAYMENT
531.09.01
.02
Treat and Stockpile Sand
Treat and Restockpile Sand from the Previous Year's Operations
531.10
BASIS OF PAYMENT
531.10.01
Treat and Stockpile Sand - Item
Treat and Restockpile Sand from the Previous Year's Operations - Item
531.01
SCOPE
This specification covers the requirements for the treatment, stockpiling, and mixing of salt with sand.
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Rev. Date: 12/1990 OPSS 531
531.02
REFERENCES
This specification refers to the following standards, specifications or publications.
Ontario Provincial Standard Specifications, Construction:
OPSS 502
Weighing of Materials
Ontario Provincial Standard Specifications, Material:
OPSS 1001
OPSS 1004
OPSS 2502
Aggregates - General
Aggregates - Miscellaneous
Sodium Chloride
531.05
MATERIALS
531.05.01
General
Aggregate shall conform to OPSS 1001, except that the use of slag shall not be permitted.
531.05.02
Sand
Sand shall conform to OPSS 1004.
531.05.03
Crushed Rock Salt
Coarse and fine crushed rock salt shall conform to OPSS 2502.
531.06
EQUIPMENT
The Contractor shall supply and maintain in good working order all such excavating, screening, loading, and
hauling equipment as required to complete the work.
531.07
CONSTRUCTION
Excavation of sand or gravel shall conform to OPSS 1001.
531.07.01
General
The work shall consist of supplying all labour and equipment required to stockpile treated sand by mixing salt
with sand, and for treating and restockpiling sand from the previous year's operations.
531.07.02
Mixing of Salt and Sand
Coarse or fine crushed rock salt shall be mixed thoroughly with screened sand in the proportions directed by
the Authority, to provide a homogeneous mixture.
Sand left over from previous year's operation shall be treated in a similar manner.
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Rev. Date: 12/1990 OPSS 531
531.07.03
Stockpiling
Stockpiles shall be built to permit the placing of material without compaction and to ensure the proper mixing
of materials.
Stockpiles shall be coned to avoid the ponding of water and to present the minimum exposed surface area.
Spillage shall be picked up and returned to the stockpile as soon as practicable.
The Contractor shall take all necessary precautions to avoid damage to paved surfaces.
531.07.04
Weighing of Materials
The provisions of OPSS 502 shall apply except that scales may be located anywhere providing there is no loss
or waste of material between the scale and the final delivery point. If there is evidence of loss or waste of
material, the Authority may order the scale to be relocated conforming to OPSS 502.
531.07.05
Volume of Materials
The capacity of each truck box will be predetermined by its dimensions. Loadings of each truck shall be kept
to not less than the predetermined capacity. The Contractor will not be required to load trucks in excess of this
capacity to allow for bulking, and no deduction will be made for any settlement of the load during
transportation, provided that such settlement is not caused by spillage or leakage. Each truck shall bear, as
an identification symbol, either a letter of the alphabet or a Roman numeral, followed by the predetermined
capacity of the truck. Symbols and capacities shall be of such a size as to be easily read by the checker.
531.09
MEASUREMENT FOR PAYMENT
531.09.01
Treat and Stockpile Sand
Measurement of the sand will be made as delivered to the stockpile site either by volume based on truck loads
conforming to sub-section 531.07.04 or by mass conforming to sub-section 531.07.05.
Load tickets will be issued conforming to the Authority's current practice for both mass or volume
measurements.
531.09.02
Treat and Restockpile Sand from the Previous Year's Operations
When quantities of sand remaining from the previous year are shown in the contract documents, they are to be
considered as approximate only.
531.10
BASIS OF PAYMENT
531.10.01
Treat and Stockpile Sand - Item
Treat and Restockpile Sand from the Previous Year's Operations - Item
Payment at the contract price for the above item(s) shall be full compensation for all labour and equipment
required to do the work.
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Rev. Date: 12/1990 OPSS 531