100 general provisions
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208.18 Flyrock Control. Before firing any blast in areas where flying rock may result in personal injury or unacceptable damage to property or the work, cover the rock with blasting mats, soil, or other equally serviceable material to prevent flyrock. If flyrock leaves the construction site or lands on a traveled road, the Contractor shall cease all blasting operations until the blasting consultant specified in 208.13 reviews the site and determines the cause and solution to the flyrock problem. Before blasting proceeds, submit a written report addressing the following: A. Why the flyrock left the construction site or landed on a traveled road. B. What corrective measures were taken to prevent this from reoccurring? 208.19 Public Meetings. If a blasting consultant, vibration specialist, airblast and noise control specialist, or hydrologist are specified in the Contract, make the consultant, specialists Contractor’s superintendent and blaster available for 1 day to prepare for and participate in a public meeting organized and conducted by the Engineer to better inform the public about anticipated drilling and blasting operations. The consultant and specialists shall be prepared to answer any questions dealing with the magnitude of seismic motion, vibrations, airblast overpressure, flyrock, and water problems that may affect the public. 208.20 Record Keeping. A. Daily Explosive Material Consumption. Keep a daily record of the transactions at each storage magazine. Update inventory records at the close of every business day. Show on the records the class and quantities received and issued and total remaining on hand at the end of each day. Check the remaining explosive inventory each day and report any discrepancies that would indicate a theft or loss of explosive material. B. Report of Loss. If a loss or theft of explosives occur, report all circumstances and details of the loss or theft immediately to the nearest Bureau of Alcohol, Tobacco and Firearms, as well as to the local law enforcement authorities and the Engineer. C. Daily Drilling and Blasting Logs. On a weekly basis, provide a daily log of the drilling and blasting operations. Update the log at the close of each business day. Fill out the Department or blasters’ drilling form to document the following: burden, spacing, bench height, hole depth and diameter, and subdrill depth. Document additional information about the drilling such as voids, mud seams, air pressure loss and lack of cuttings. The driller shall give this form to the blaster and the Department. Document on the blasting log the number of blasts, times and dates of blasts, the blasting locations and patterns, and all of the following information: 1. Station limits of the shot. 2. Plan and section views of drill pattern including free face, burden, blast hole spacing, blast hole diameters, blast hole angles, lift height, and subdrill depth. 3. Loading diagram showing type and amount of explosive, primers, and initiators and location and depth of stemming. 4. Initiators sequence of blast holes including delay times and delay system in each blast hole. 5. Trade names and sizes of all explosives, primers, and initiators to be employed. 6. Signature of the blaster in charge. 7. Use the blasters blasting form or the Blasting Report form in the current version of the NHI Course Rock Blasting and Overbreak Control Manual. Adapt these forms to meet the project requirements. The drilling and blasting logs are for quality control, informational, and record keeping purposes. Review of the blast log by the Engineer does not relieve the Contractor of responsibility for the accuracy and adequacy of the drilling and blasting log.
The Department will pay lump sum for all work for the Pre-Blast Condition Survey, Blasting Consultant, Airblast and Noise Control, Vibration Control and Monitoring, and Hydrologist. The same person or consultant may perform the pre-blast survey, vibration control and monitoring, airblast and noise control, and the work required of the hydrologists. The Department may make intermediate payments based on the percentage of the work completed for Pre-Blast Condition Survey, Blasting Consultant, Airblast and Noise Control, Vibration Control and Monitoring, or Hydrologist. Payment for guide holes is incidental to Presplitting. Payment for all of controlled blasting is included in the payment for Presplitting. The Department will pay for stabilization under 109.05 if caused by geology. The Department will not pay for stabilization if caused by the Contractor’s blasting operations. The Department will pay for the placement and monitoring of piezometers according to 109.05. The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 208 Square Yard Presplitting (Square Meter) 208 Lump Sum Pre-Blast Condition Survey 208 Lump Sum Blasting Consultant 208 Lump Sum Airblast and Noise Control 208 Lump Sum Vibration Control and Monitoring 208 Lump Sum Hydrologist Item 209 LINEAR GRADING 209.01 Description 209.02 Materials 209.03 Construction Requirements 209.04 Ditch Cleanout 209.05 Reshaping Under Guardrail 209.06 Preparing Subgrade for Shoulder Paving 209.07 Grading Tolerances 209.08 Method of Measurement 209.09 Basis of Payment 209.01 Description. This work consists of performing linear grading within the specified alignment detailed in the Contract Documents and within the grading tolerances. Use all suitable material in the work. Alternatively, legally use, recycle or dispose of all excavated materials according to 105.16 and 105.17. 209.02 Materials. Furnish suitable materials as defined in 203.02.R. 209.03 Construction Requirements. Construct embankment and subgrade work according to Items 203 and 204. When off-project-limit embankment material is needed for the work, an estimated quantity for Item 209 Borrow will be specified in the Contract Documents. 209.04 Ditch Cleanout. Reestablish the cross-section of the existing ditch. Use the required embankment material to fill the eroded conditions. The compaction requirements specified in Item 203 do not apply. 209.05 Reshaping Under Guardrail. Reshape graded shoulders at locations were the existing guardrail is removed or where the new guardrail is to be erected to ensure a smooth drainable surface free of all irregularities. 209.06 Preparing Subgrade for Shoulder Paving. Prepare the subgrade for shoulder paving by excavating the existing shoulder material to the depth shown in the plan. Trim unsound or broken edges of asphalt concrete or concrete pavement to a line established by the Engineer. Remove any unstable material and shape and compact the subgrade. Compact the subgrade according to 204.03. Backfill areas graded in excess of the depth shown on the plans with Item 617 compacted aggregate at no expense to the Department. 209.07 Grading Tolerances. Do not encroach on stream channels, impact wetlands, or extend beyond construction limits, Right-of-Way or easement limits. Do not make alignment or profile grade adjustments that adversely affect drainage. Construct the work to the tolerances in 203.08. 209.08 Method of Measurement. The Department will measure Linear Grading, Linear Grading Method ___, Reshaping Under Guardrail, and Preparing Subgrade for Shoulder Paving by the number of either stations or miles (meters or kilometers) completed and accepted, along each side of the pavement. The Department will not make deductions for intersections and other gaps. The Department will measure Ditch Cleanout by the number of feet (meters) measured along the centerline of the ditch. The Department will measure Borrow according to 203.09.
The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 209 Station or Mile Linear Grading (Meter or Kilometer) 209 Station or Mile Linear Grading Method ___ (Meter or Kilometer) 209 Feet (Meters) Ditch Cleanout 209 Station or Mile Reshaping Under Guardrail
209 Station or Mile Preparing Subgrade for Shoulder Paving (Meter or Kilometer) 209 Cubic Yard or Ton Borrow (Cubic Meter or Metric Ton) 250 PAVEMENT REPAIRS ITEM 251 PARTIAL DEPTH PAVEMENT REPAIR 251.01 Description 251.02 Removal of Existing Pavement 251.03 Placement of Asphalt Concrete 251.04 Method of Measurement 251.05 Basis of Payment 251.01 Description. This work consists of partial depth removal of existing pavement in areas exhibiting deterioration at the surface, applying tack coat, and placing and compacting asphalt concrete. 251.02 Removal of Existing Pavement. The Engineer will designate the location and limits of areas to be repaired. Provide the Engineer with aerosol spray paint to outline those areas for repair. Provide rectangular repair areas with dimensions as required to envelop surface deterioration. Unless otherwise specified, extend repair areas the full width of a traffic lane at transverse joints and along portions of longitudinal joints. Remove pavement to the depth shown on the plans. Remove the pavement to the specified depth within the designated limits without loosening or otherwise damaging adjacent pavement. Dispose of removed pavement according to 202. 251.03 Placement of Asphalt Concrete. Apply 407.02 material to thoroughly coat the exposed surface and to fill cracks and joint openings. Place and compact approved Item 448 asphalt concrete in one or more lifts as necessary to finish flush with the adjacent pavement surface. Thoroughly compact the final lift using a Type I pneumatic tire roller that conforms to 401.13. As the rolling progresses, add additional patching material, as necessary, to produce a smooth surface flush with the existing pavement surface. Continuously compact each lift while the material is in a workable condition throughout the depth of the lift. Trim the limits of the repair to form a vertical face 1.5 inches (38 mm) deep from the surface before placing the final asphalt concrete layer adjacent to the existing pavement unless the repair is covered with an overlay within 60 days. If the Contract does not include resurfacing, seal the perimeter surface of the repaired area by applying a nominal 4 inch (100 mm) wide strip of approved 702.04 asphalt material, RS-1, RS-2, CRS-1, or CRS-2, or 702.01 approved PG binder. 251.04 Method of Measurement. The Department will measure the quantity of Partial Depth Pavement Repair by the number of square yards (square meters) of pavement repaired in the complete and accepted work, calculated using the dimensions established by the Engineer. 251.05 Basis of Payment. Payment is full compensation for furnishing all materials, including aerosol spray paint, tack coat, asphalt concrete, seal coat, and cover aggregate and for all labor, equipment, and incidentals necessary to complete this work. The Department will pay for accepted quantities at the contract price as follows: Item Unit Description 251 Square Yard Partial Depth Pavement Repair (Square Meter) ITEM 252 FULL DEPTH RIGID PAVEMENT REMOVAL AND FLEXIBLE REPLACEMENT 252.01 Description 252.02 Removal of Existing Rigid Pavement 252.03 Correction of Subgrade 252.04 Placement of Asphalt Concrete 252.05 Method of Measurement 252.06 Basis of Payment 252.01 Description. This work consists of the full depth removal of existing rigid pavement in areas exhibiting deterioration, correcting the subgrade, placing and compacting asphalt concrete, and restoring the shoulders. 252.02 Removal of Existing Rigid Pavement. Conform to 255.03, except the last paragraph does not apply. 252.03 Correction of Subgrade. Shape and recompact the subgrade as the Engineer directs. Clean all vertical faces of the existing pavement, and coat them with asphalt material according to 401.14. 252.04 Placement of Asphalt Concrete. Construct the pavement replacement by placing and compacting Item 301 or 448, Type 2 material in two or more lifts according to 401.16. Thoroughly and uniformly compact the first lift and all intermediate lifts using suitable mechanical compaction equipment operated over the entire replacement area. Thoroughly compact the final lift using a pneumatic tire roller that conforms to 401.13. As the rolling progresses, add additional patching material, as necessary, to produce a smooth surface flush with the existing pavement surface. Continuously compact each lift while the material is in a workable condition throughout the depth of the lift. Trim the limits of the repair to form a vertical face 1.5 inches (38 mm) deep from the srurface before placing the final asphalt concrete layer adjacent to the existing pavement unless the repair is covered with an overlay within 60 days. If the Contract does not include resurfacing, seal the perimeter surface of the repaired areas by applying a nominal 4 inch (100 mm) wide strip of approved 702.04 asphalt material, RS-1, RS-2, CRS-1, or CRS-2 or 702.01 approved PG binder. After completing repairs, restore the existing shoulders to the condition that existed prior to the repair work.
The Department will measure the quantity of Full Depth Pavement Sawing by the number of feet (meters) of full depth saw cuts in the complete and accepted work. The Department will not measure offset saw cuts. The Department will not measure additional cuts made to facilitate the removal of the pavement 252.06 Basis of Payment. Payment is full compensation for furnishing all materials, including aerosol spray paint, removing pavement, correcting the subgrade, placing flexible pavement, sealing, and restoring the shoulders and for all labor, equipment, and incidentals necessary to complete this work. The Department will not pay for removal, disposal, and replacement of pavement damaged adjacent to the repair area. The Department will pay for accepted quantities at the contract prices as follows:
252 Square Yard Full Depth Rigid Pavement (Square Meter) Removal and Flexible Replacement 252 Foot (Meter) Full Depth Pavement Sawing ITEM 253 PAVEMENT REPAIR 253.01 Description 253.02 Removal of Existing Pavement 253.03 Placement of Asphalt Concrete 253.04 Method of Measurement 253.05 Basis of Payment 253.01 Description. This work consists of removing existing asphalt concrete, brick, portland cement concrete, or aggregate pavement courses; shaping and compacting the exposed material; and placing new asphalt concrete pavement or aggregate and asphalt concrete pavement courses. The plans show details about the repairs and replacement material. 253.02 Removal of Existing Pavement. The Engineer will designate the location and limits of areas to be repaired. Provide the Engineer with aerosol spray paint to outline those areas for repairs. Repair the full depth of the pavement, unless otherwise shown on the plans. Cut the existing pavement at the limits specified and as necessary to prevent disturbing or undermining the remaining pavement during removal. Completely remove pavement in the repair area to the specified depth without displacing, undermining, or otherwise damaging the remaining pavement. Dispose of removed pavement according to 202. 253.03 Placement of Asphalt Concrete. Shape and compact the exposed underlying material as the Engineer directs. Before placing asphalt concrete, clean all vertical faces of the existing pavement and coat them with asphalt material according to 401.14. Place the replacement material in lifts as the Engineer directs. Thoroughly and uniformly compact each lift using suitable compaction equipment as the Engineer directs. Finish the final lift flush with the existing pavement surface. Thoroughly compact the final lift using a pneumatic tire roller that conforms to 401.13. As the rolling progresses, add additional patching material, as necessary, to produce a smooth surface flush with the existing pavement surface. Continuously compact each lift while the material is in a workable condition throughout the depth of the lift. Trim the limits of the repair to form a vertical face 1.5 inches (38 mm) deep from the surface before placing the final asphalt concrete layer adjacent to the existing pavement unless the repair is covered with an overlay within 60 days. If the Contract does not include resurfacing, seal the perimeter surface of the repaired areas by applying a nominal 4 inch (100 mm) wide strip of approved 702.04 asphalt material, RS-1, RS-2, CRS-1, or CRS-2 or 702.01 approved PG binder. After completing repairs, restore the existing shoulders to the condition that existed prior to the repair work. 253.04 Method of Measurement. The Engineer will measure the quantity of Pavement Repair by either the number of square yards (square meters) or cubic yards (cubic meters) of pavement repaired in the complete and accepted work, calculated using the dimensions established by the Engineer. The Engineer will not measure removal and replacement pavement beyond the designated limits. 253.05 Basis of Payment. Payment is full compensation for furnishing all materials, including aerosol spray paint and replacement and restoration materials; cutting, removing, and disposing of existing pavement; shaping and compacting the exposed underlying material; placing new pavement; and restoring the shoulders and for all labor, equipment, and incidentals necessary to complete this work. The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 253 Square Yard Pavement Repair (Square Meter) 253 Cubic Yard Pavement Repair (Cubic Meter) ITEM 254 PAVEMENT PLANING 254.01 Description 254.02 Equipment 254.03 Planing 254.04 Surface Patching 254.05 Surface Tolerances 254.06 Method of Measurement 254.07 Basis of Payment 254.01 Description. This work consists of planing the existing asphalt concrete and disposing of the cuttings, and, if specified in the Contract, patching the planed surface. 254.02 Equipment. Use self-propelled planing equipment that has sufficient power and stability to consistently and efficiently meet the requirements of 254.05 and the plans. Use equipment with either grinding, sawing, or milling type cutters. Ensure that the cutters are mounted rigidly to the carrier and are adjustable to control the depth of cut and cross-slope. Accomplish longitudinal planing action by using equipment with a suitable carrier wheelbase or with an automatic control system having an external reference. Ensure that cross-slope adjustments or automatic controls are capable of producing either a variable or a constant cross-slope, as required. For small or confined areas, the Contractor may use suitable supplemental equipment or methods approved by the Engineer. 254.03 Planing. Make one or more planing passes, as necessary, over the designated area to the depth specified in the plans. Remove irregularities such as bumps, corrugations, and wheel ruts, when required, to establish a new pavement surface elevation or cross-slope. Remove cuttings from the surface following each pass. Before opening the completed area to traffic, thoroughly clean the surface of all loose material that would create a hazard or nuisance, or would redeposit into the surface texture. Dispose of cuttings according to 202. Implement effective measures to control dust, pavement contamination, and the scattering of loose particles during planing and cleaning operations. If planing damages the adjacent pavement, repair the damaged area to the Engineer’s satisfaction. Ensure that the repaired area matches the adjacent pavement in terms of smoothness and mix type. 254.04 Surface Patching. Patch areas of the planed surface that the Engineer designates to have spalling or dislodged unsound pavement. Before patching, clean areas of loose material, coat with 407.02 asphalt material, and fill with Item 448, Type 1 material. Level and compact new material flush to the adjacent planed pavement. 254.05 Surface Tolerances. Plane the surface free from grooves, ridges, gouges, or other irregularities detrimental to the safe operation of vehicles on the planed surface. If the Contract specifies planing without resurfacing, plane the surface to a smoothness of 1/8 inch in 10 feet (3 mm in 3 m). If the Contract specifies resurfacing after planing, plane the surface to a smoothness of 1/4 inch in 10 feet (6 mm in 3 m). Match the surfaces at the edges of adjacent passes within 1/8 inch (3 mm). Ensure that the cross-slope of the planed surface is within 3/8 inch in 10 feet (10 mm in 3 m) of the specified cross-slope. 254.06 Method of Measurement. The Engineer will measure the quantity of Pavement Planing, Asphalt Concrete by the number of square yards (square meters). The Engineer will measure the quantity of Patching Planed Surface by the number of square yards (square meters). Yüklə 7,65 Mb. Dostları ilə paylaş:
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