833 drainage structure installation or removal pbsc.docx
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833 Drainage Structure Installation or Removal
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833 DRAINAGE STRUCTURE INSTALLATION OR REMOVAL (8/07)
833.01 Service Required
Install or remove drainage structures including culverts, water-bars, drivable drain dips, and cross ditches.
833.02 Performance Standard
Drainage structure installation is complete when culverts, water-bars, drivable drain dips and cross ditches have been installed to the lines and grades specified, and drainage structure removal is complete when designated culverts, water-bars and cross ditches have been removed and culverts have been properly disposed of.
833.03 Location of Work
As specified on roads listed on the ROAD LISTING, SHOWN ON THE PLANS, or as ordered by the Contracting Officer.
833.04 Measurement
Measurement under this Section will be made by the total number of units for each item listed in the SCHEDULE OF ITEMS completed and accepted.
A. Mile: Work activity will be measured along the centerline of the road regardless of the number of lanes.
B. Linear Foot: Work activities by the linear foot will be measured using standard survey methods rounded to the nearest one (1) foot. Culvert bands are incidental to the installation.
833.05 Payment
A. The accepted quantities will be paid at the contract price per unit of measurement for the Section 833 pay items listed in the schedule of items. Payment will be full compensation for the work prescribed in this Section.
Pay Item Description Pay Unit
| 833(1) | ______ Inch corrugated metal pipe, | ||
| ______ Inch thickness for steel, | |||
| ______ Inch thickness for aluminum or | |||
| ______ Inch thickness for Plastic | Linear Foot |
| 833(2) | Culvert Removal | Each | ||||
| 833(3) | Water-bar Installation | Each | ||||
| 833(4) | Water-bar Installation | Mile | ||||
| 833(5) | Water-bar Removal | Each | ||||
| 833(6) | Water-bar Removal | Mile | ||||
| 833(7) | Cross Ditch Installation | Each | ||||
| 833(8) | Cross Ditch Installation | Mile | ||||
| 833(9) | Cross Ditch Removal | Each | ||||
| 833(10) | Cross Ditch Removal | Mile | ||||
| 833(11) | Drivable Grade Dip Installation | Each | ||||
| 833(12) | Drivable Grade Dip Installation | Mile |
833 - DRAINAGE STRUCTURE INSTALLATION OR REMOVAL (08/21/07) 2
833.06 Acceptable Quality Levels
| Description |
| Major |
| Minor |
| Allowable Defects |
| Required Action |
| Defect |
| Defect |
| Major |
| Minor |
| Major |
| Minor |
| Culvert size |
| Culvert is smaller than the designated diameter shown on the drawings. |
| Culvert is larger than the designated diameter shown on the drawings. |
| 0 |
| N/A |
| Remove culvert and replace with designated size |
| Accept if culvert fits the geometry of the road but pay at designated size otherwise replace |
| Culvert is shorter than the designated length shown on the drawings. |
| Culvert is longer than the designated length shown on the drawings. |
| 0 |
| 0 |
| Replace or add section to fit geometry of road. |
| Remove excess culvert and treat cut end, or harden fill slope to prevent erosion and pay for ordered length |
| Grade and alignment of culvert |
| More than 10% deviation from original lines and grades. |
| 10% or less deviation from original lines and grades. |
| 0 |
| 1 per unit |
| Remove and replace culvert |
| Repair if greater than X minor defects * |
| Sag or depression in road after placement of culvert and backfill material |
| Greater than 2 inch depression in traveled way |
| 2 inch or less depression in traveled way |
| 0 |
| 1 per unit |
| Furnish, place and compact designated material to repair depression. |
| Repair if greater than X minor defects * |
| Removed culvert or pieces left on National Forest System Lands |
| Culverts or pieces of culvert left on National Forest System Lands |
| N/A |
| 0 |
| N/A |
| Remove from National Forest System Lands |
| N/A |
| Water-bars and cross ditches |
| More than 10% deviation from original lines and grades. |
| 10% or less deviation from original lines and grades. |
| 0 |
| 1 per unit |
| Rework |
| Rework if greater than X minor defects * |
| Drivable grade dip |
| More than 10% deviation from specified lines and grades |
| 10% or less deviation from specified lines and grades |
| 0 |
| 1 per unit |
Rework Rework if minor defects interfere with proper drainage
| Sedimentation |
| Operations cause or allow sediment to leave site. |
| N/A |
| 0 |
| N/A |
| Cease operations until sediment is controlled |
| N/A |
| Work Area Management |
| Not following approved safety plan which may include signs, flaggers, and other temporary traffic control measures |
| Not following approved safety plan which may include signs, flaggers, and other temporary traffic control measures |
| 0 |
| 0 |
| Suspend work until in compliance |
| Suspend work until in compliance |
* Forests have the option to choose a pay reduction in lieu of rework. However, each Forest must establish a threshold where rework is required and define pay reductions for each defect.
Intent and use: User to establish threshold for the acceptable level of quality.
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