ONTARIO PROVINCIAL STANDARD SPECIFICATION METRICOPSS 304NOVEMBER 2006CONSTRUCTION SPECIFICATION FOR SINGLE AND DOUBLE SURFACE TREATMENT TABLE OF CONTENTS 304.01 SCOPE 304.02 REFERENCES 304.03 DEFINITIONS 304.04 SUBMISSION AND DESIGN REQUIREMENTS - Not Used 304.05 MATERIALS 304.06 EQUIPMENT 304.07 CONSTRUCTION 304.08 QUALITY ASSURANCE - Not Used 304.09 MEASUREMENT FOR PAYMENT 304.10 BASIS OF PAYMENT APPENDICES 304-A Commentary 304.01 SCOPE This specification covers the requirements for surface preparation, application of bituminous binder, and application of aggregate for single and double surface treatment. 304.01.01 Significance and Use of Appendices Appendices are not a mandatory part of the specification unless invoked by the Owner. Appendix 304-A is a commentary appendix to provide designers with information on the use of the specification in a Contract. Page 1 Rev. Date: 11/2006 OPSS 304 304.02 REFERENCES This specification refers to the following standards, specifications, or publications: Ontario Provincial Standard Specifications, Material OPSS 1006 Aggregates - Surface Treatment OPSS 1103 Emulsified Asphalt Ministry of Transportation Publications Ontario Traffic Manual (OTM): Book 7 - Temporary Conditions 304.03 DEFINITIONS For the purpose of this specification, the following definitions apply: Appurtenances mean maintenance hole, catch basin, valve chamber, and water valve covers and similar Utility access covers located within the paved portion on the roadway. Binder means an emulsified asphalt with or without polymer modification used to bind aggregates. Double Lap means the coverage produced from the application of binder where the binder from each spray bar nozzle overlaps the binder application from the adjacent nozzle by one half. Double Surface Treatment means two successive single surface treatments. End Nozzle means a spray bar nozzle which delivers binder to the inside half of a standard spray pattern. Lot means the quantity of work completed with a tanker truck shipment of binder. Single Surface Treatment means a single application of bituminous binder followed by a single application of Class 1, Class 2, Class 3, Class 4, Class 5, or Class 6 aggregate. Triple Lap means the coverage produced from the application of binder where the binder from each spray bar nozzle overlaps the binder application from the adjacent nozzle by two thirds. 304.05 MATERIALS 304.05.01 Binders Binders shall be according to OPSS 1103. 304.05.02 Aggregates Aggregates shall be according to OPSS 1006 and as specified in the Contract Documents. Page 2 Rev. Date: 11/2006 OPSS 304 304.06 EQUIPMENT 304.06.01 Pressure Distributor The pressure distributor shall be designed and manufactured to spray binder on the road surface. The pressure distributor shall be capable of applying binder at the specified rates and in a continuous and uniform manner both longitudinally and transversely for a full lane width. 304.06.02 Mechanical Aggregate Spreader The mechanical aggregate spreader shall be designed and manufactured to be self-propelled and capable of continuously and uniformly distributing aggregate at the specified application rate. 304.06.03 Rotary Power Brooms Brooms shall be capable of cleaning gravel, sand, dirt, and other debris from the roadway surface. 304.06.04 Rollers 304.06.04.01 General Rollers shall be ballasted according to the manufacturers recommendations. 304.06.04.02 Steel Drum Rollers Steel drum rollers shall be single drum vibratory rollers according to Table 1 and shall be operated in the static mode, if the drum is not rubber coated. Drive wheels shall not mark the aggregate. 304.06.04.03 Pneumatic-Tired Rollers Pneumatic-tired rollers shall be self-propelled and be according to Table 2. The wheels shall be mounted with smooth tread rubber tires. Tire inflation pressure shall be a minimum of 350 kPa when the tires are cold. All tires shall have equal pressure. Each roller shall be equipped with a suitable tire pressure gauge for checking tire inflation pressure. 304.06.05 Pilot Vehicle The pilot vehicle shall be equipped according to the requirements of the OTM, Book 7. 304.07 CONSTRUCTION 304.07.01 Operational Constraints Surface treating operations shall not be carried out when the ambient temperature at the work location is less than 10 C or where climatic or site conditions preclude the curing of the binder. The application of binder and aggregate shall terminate one hour before sunset. Surface treatment shall not be carried out prior to May 15th south of a line through Pembroke, Magnetawan, and Pointe au Baril Station or prior to June 1st north of the line. Surface treatment shall not be carried out after September 1st except with the approval of the Contract Administrator. Surface treatment may be extended to September 30th provided a high float emulsion is used. Page 3 Rev. Date: 11/2006 OPSS 304 304.07.02 Sampling 304.07.02.01 Binder The Contractor shall provi