Archived Engineering Design Specifications
The February 2011 Revisions to the Architecture and Engineering Division's Specifications are now available for download. There are three (3) new specifications and forty-six (46) revised specifications.
Please click here to download a complete copy of the Specifications. The download is one, self-extracting file approximately 21.5 MB in size which contains 179 files. Should you wish to download just the new and revised specifications please click here to download one self-extracting file approximately 15 MB in size which contains 50 files.
Below is an index of all the specifications that can be viewed and/or downloaded individually. To view, simply click the specification number. To save to your computer, right click the specification number and select "Save Target As.."
The files are in the Adobe .pdf format. If you do not already have this reader, it is available free for download at Adobe's web site. Please note that in the instance that a dispute should arise over the interpretation of a specification the County Engineer's determination shall be considered final.
| No. | Specification Section | Revision No. | Revision Date |
| 102 | Clearing and Grubbing | 6 | 1 February 2011 |
| 104 | Removing Old Concrete | 2 | 1 February 2011 |
| 110 | Roadway Excavation | 6 | 1 February 2011 |
| 120 | Excavation for Channels, and other Drainage Facilities | 5 | 1 February 2011 |
| 130 | Borrow | 5 | 1 November 2008 |
| 132 | Embankment | 6 | 1 February 2011 |
| 160 | Topsoil | 4 | 1 February 2011 |
| 162 | Sodding for Erosion Control and Stabilization | 6 | 1 November 2008 |
| 164 | Seeding and Erosion Control Blanket | 4 | 1 November 2008 |
| 165 | Hydro-Mulch Seeding (for Erosion Control and Stabilization) | 5 | 1 November 2008 |
| 166 | Fertilizer | 2 | 1 November 2008 |
| 200 | Stripping | 6 | 1 February 2011 |
| 205 | Subgrade | 3 | 1 November 2008 |
| 220 | Lime Stabilized Subgrade | 4 | 1 February 2011 |
| 221 | Hydrated Lime and Lime Slurry | 2 | 1 February 2011 |
| 222 | Portland Cement Stabilized Subgrade | 2 | 1 November 2008 |
| 223 | Lime-Flyash or Flyash Stabilized Subgrade | 4 | 1 February 2011 |
| 224 | Quicklime (Stabilization) | 2 | 1 February 2011 |
| 230 | Crushed Aggregate Base Course | 3 | 1 February 2011 |
| 231 | Cement Stabilized Crushed Aggregate Base Course | 4 | 1 November 2008 |
| 250 | Hot Mix Asphaltic Concrete Base Course (Black Base) | 7 | 1 February 2011 |
| 251 | Base Repair with Hot Mix Asphaltic Concrete Base Course | 4 | 1 February 2011 |
| 252 | In-Place Full Depth Cold Flexible Pavement Recycling | 3 | 1 February 2011 |
| 309 | Milling Existing Pavement | 1 | 1 November 2008 |
| 310 | Prime Coat | 4 | 1 February 2011 |
| 320 | Single Course Surface Treatment | 3 | 1 February 2011 |
| 322 | Two Course Surface Treatment | 4 | 1 February 2011 |
| 323 | Emulsified Asphalt Treatment | 2 | 1 February 2011 |
| 324 | Seal Coat | 2 | 1 February 2011 |
| 340 | Hot Mix-Hot Laid Asphaltic Concrete | 10 | 1 February 2011 |
| 341 | Hot In-Place Asphalt Recycling | 2 | 1 February 2011 |
| 360 | Concrete Pavement | 14 | 1 February 2011 |
| 361 | Full Depth Repair of Concrete Pavement (Drawings) | 2 | 1 February 2011 |
| 400 | Structural Excavation and Backfill | 3 | 1 February 2011 |
| 402 | Bank Sand Backfill | 3 | 1 February 2011 |
| 403 | Driving Timber Piling | 2 | 1 February 2011 |
| 404 | Driving Steel Piling | 2 | 1 February 2011 |
| 405 | Driving Concrete Piling | 2 | 1 February 2011 |
| 407 | Treated and Untreated Timber Piling | 2 | 1 February 2011 |
| 408 | Steel Sheet Piling | 1 | 1 November 2008 |
| 409 | Steel H Piling | 1 | 1 November 2008 |
| 410 | Prestressed Concrete Piling | 2 | 1 November 2008 |
| 411 | Drilled Shaft Foundations | 3 | 1 February 2011 |
| 420 | Concrete Structures | 1 | 1 November 2008 |
| 421 | Structural Concrete | 7 | 1 February 2011 |
| 423 | Prestressed Concrete Units | 2 | 1 November 2008 |
| 424 | Extending Concrete Structures | 2 | 1 November 2008 |
| 429 | Trench Safety System | 1 | 1 November 2008 |
| 430 | Construction of Underground Utilities (with drawings) | 9 | 1 February 2011 |
| 431 | Jacking, Boring or Tunneling Pipe | 1 | 1 November 2008 |
| 432 | Tunnel Construction | 1 | 1 November 2008 |
| 433 | Cement Stabilized Sand Bedding and Backfill Material | 11 | 1 February 2011 |
| 434 | Flowable Fill | 2 | 1 November 2008 |
| 435 | Timber Ordered Left In Trench | 2 | 1 November 2008 |
| 436 | Well Pointing | 1 | 1 November 2008 |
| 437 | Elastomeric Materials | 1 | 1 February 2010 |
| 438 | Preformed Joint Seal | 1 | 1 November 2008 |
| 439 | Polyurethane Joint Seal | 1 | 1 November 2008 |
| 440 | Reinforcing Steel | 1 | 1 November 2008 |
| 441 | Steel Structures | 1 | 1 November 2008 |
| 442 | Metals for Structures | 1 | 1 November 2008 |
| 445 | Structural Bolting | 2 | 1 November 2008 |
| 446 | Structural Welding | 1 | 1 November 2008 |
| 447 | Painting and Protective Coating | 1 | 1 November 2008 |
| 448 | Bridge Plaque | 1 | 1 February 2011 |
| 450 | Concrete and Steel Railing | 3 | 1 November 2008 |
| 451 | Removing and Replacing Damaged Railing | 1 | 1 November 2008 |
| 452 | Removing Railing | 1 | 1 February 2010 |
| 453 | Temporary Railing | 1 | 1 November 2008 |
| 454 | Deleted | Deleted | Deleted |
| 455 | Timber for Structures | 1 | 1 November 2008 |
| 456 | Timber Structures | 1 | 1 November 2008 |
| 457 | Timber Preservatives and Treatment | 1 | 1 November 2008 |
| 458 | Hardware for Heavy Timber Construction | 1 | 1 November 2008 |
| 459 | Timber Bents | 1st Issue | 1 November 2008 |
| 460 | Reinforced Concrete Pipe | 8 | 1 February 2011 |
| 461 | Corrugated Metal Pipe | 6 | 1 February 2010 |
| 462 | Clay Pipe | 1 | 1 November 2008 |
| 463 | Safety End Treatment (with full size drawing) | 4 | 1 November 2008 |
| 464 | PVC Pipe | 1 | 1 November 2008 |
| 465 | Remove and Dispose of Existing Concrete or Metal Pipe | 1 | 1 November 2008 |
| 470 | Deleted | Deleted | Deleted |
| 471 | Precast Concrete Manholes (with drawings) | 7 | 1 February 2011 |
| 472 | Inlets (with drawings) | 8 | 1 February 2011 |
| 473 | Adjusting Manholes and Inlets | 2 | 1 November 2008 |
| 476 | Hydrostatic Testing of Pressure Lines | 1 | 1 November 2008 |
| 477 | Low Pressure Air Test-Sanitary Sewer Line | 1 | 1 November 2008 |
| 480 | Precast Reinforced Concrete box Sewers (with drawings) | 12 | 1 February 2011 |
| 481 | Monolithic Reinforced Concrete Box Sewers | 5 | 1 February 2011 |
| 491 | Reinforced Concrete Slope Paving | 2 | 1 February 2011 |
| 493 | Riprap | 2 | 1 November 2008 |
| 494 | Geotextiles | 1 | 1 November 2008 |
| 495 | Removing Old Structures | 2 | 1 November 2008 |
| 500 | Remove & Relocate or Dispose of Traffic Signs, Mail Boxes and Roadway Signs | 2 | 1 November 2008 |
| 501 | Tree Protection and Trimming | 1 | 1 November 2008 |
| 510 | Planing and/or Texturing Pavement | 1 | 1 November 2008 |
| 515 | Roadway Shell | 1 | 1 November 2008 |
| 516 | Installation of Flex Beam Guardrail (with drawings) | 8 | 1 February 2010 |
| 520 | Weighing and Measuring Equipment | 1 | 1 November 2008 |
| 526 | Membrane Curing | 4 | 1 November 2008 |
| 530 | Concrete Curb, Gutter, Curb and Gutter, Sidewalks and Driveways (with 3 drawings) | 4 | 1 February 2011 |
| 531 | Colored Concrete for Sidewalks and Wheelchair Ramps | 1 | 1 November 2008 |
| 535 | Esplanades, Medians, and Directional Islands | 3 | 1 November 2008 |
| 536 | Coloring Concrete Medians and Sidewalks | 1 | 1 November 2008 |
| 537 | Wheel Stops (with drawings) | 1 | 1 November 2008 |
| 540 | Removing and Disposing of Existing Asphaltic Surface and Flexible Base Material | 1 | 1 November 2008 |
| 550 | Existing Fencing and Gates | 1 | 1 November 2008 |
| 551 | Clearing, Grubbing and Fencing | 2 | 1 February 2010 |
| 554 | Wood Fencing | 1 | 1 November 2008 |
| 555 | Chain Link Fencing (with drawings) | 3 | 1 November 2008 |
| 556 | Four Strand Barbed Wire Fence (with drawings) | 2 | 1 November 2008 |
| 559 | Construction Safety Fence | 1st Issue | 1 February 2010 |
| 560 | Cleanup | 1 | 1 November 2008 |
| 561 | Video Recording Construction | 2 | 1 November 2008 |
| 562 | Preparing the Right-of-Way | 1 | 1 November 2008 |
| 563 | CCTV Inspection of Storm Sewer | 1st Issue | 1 February 2010 |
| 624 | Aluminum Signs | 5 | 1 February 2010 |
| 646 | Roadside Traffic Sign Support (with a drawing) | 4 | 1 November 2008 |
| 648 | Encapsulated Lens Reflective Sheeting for Traffic Control Signs (Hi-Intensity Grade) | 1 | 1 November 2008 |
| 649 | Wide Angle Prismatic Retroreflective Sheeting for Traffic Control signs (Diamond Grade) | 2 | 1 November 2008 |
| 658 | Delineators and Object Markers | 1 | 1 November 2008 |
| 660 | Reflectorized Pavement Markings | 4 | 1 February 2011 |
| 661 | Traffic Paint (Solvent Based) | 2 | 1 November 2008 |
| 662 | Glass Reflective Spheres for Traffic Paint | 2 | 1 November 2008 |
| 663 | Traffic Buttons and Pavement Markers | 3 | 1 November 2008 |
| 665 | Work Zone Pavement Markings | 3 | 1 November 2008 |
| 666 | Prefabricated Pavement Markings | 3 | 1 November 2008 |
| 669 | Pavement Surface Preparation for Markings | 1 | 1 November 2008 |
| 670 | Barricades (with a drawing) | 9 | 1 November 2008 |
| 671 | Traffic Control | 6 | 1 February 2010 |
| 672 | Flagmen | 7 | 1 February 2011 |
| 673 | Constructing Detours for Maintaining Two-Way Traffic | 10 | 1 February 2010 |
| 674 | Removing Pavement Striping and Markings | 2 | 1 November 2008 |
| 675 | Traffic Paint Striping (Water Based) | 2 | 1 November 2008 |
| 676 | Traffic Paint (Water Based) | 1 | 1 November 2008 |
| 677 | Electrical Conduits for Traffic Signal Installation | 2 | 1 November 2008 |
| 678 | Zinc Coated Steel Wire Strand | 1 | 1 November 2008 |
| 679 | Insulated Jacketed Traffic Signal Cable | 1 | 1 November 2008 |
| 680 | Steel Mast Arm & Steel Strain Pole Assemblies | 1 | 1 November 2008 |
| 681 | Treated Timber Poles | 1 | 1 November 2008 |
| 682 | Traffic Signal Supports: Cantilever, Band-On Arm & Combination Poles | 1 | 1 November 2008 |
| 683 | Traffic Signal Supports - Pedestal Poles | 4 | 1 November 2008 |
| 684 | Deleted | Deleted | Deleted |
| 685 | Deleted | Deleted | Deleted |
| 686 | Road Illumination Assemblies (On Traffic Signal Poles) | 5 | 1 February 2010 |
| 687 | Flasher Assembly Installation | 4 | 1 November 2008 |
| 688 | Flasher Assemblies | 3 | 1 November 2008 |
| 690 | Traffic Signal Heads | 4 | 1 November 2008 |
| 691 | Twelve Inch Signal Head with Programmable Visibility of Signal Faces | 1 | 1 November 2008 |
| 692 | Symbolic Pedestrian Signal Head (Incandescent Type) | 2 | 1 November 2008 |
| 693 | Traffic Signal Lamps | 2 | 1 February 2010 |
| 694 | Down Light for Traffic Signal - Fluorescent Type | 4 | 1 November 2008 |
| 696 | Low Profile Concrete Barrier | 2 | 1 February 2011 |
| 698 | Temporary
Polyethylene Water-Filled Barrier |
1 | 1 November 2008 |
| 700 | Notice of Intent | 1 | 1 February 2011 |
| 701 | Diversion Dikes | 1 | 1 February 2010 |
| 702 | Interceptor Dikes | 1 | 1 February 2010 |
| 703 | Diversion Swales | 1 | 1 February 2010 |
| 704 | Interceptor Swales | 1 | 1 February 2010 |
| 705 | Diversion Dikes with Swales | 1 | 1 February 2010 |
| 706 | Pipe Slope Drain | 1 | 1 February 2010 |
| 708 | Filter Fabric Fence | 1 | 1 February 2010 |
| 709 | Triangular Filter Fabric Fence | 1 | 1 February 2010 |
| 711 | Brush Berm | 1 | 1 February 2010 |
| 713 | Reinforced Filter Fabric Barrier | 1 | 1 February 2010 |
| 714 | Stone Outlet Sediment Trap | 1 | 1 February 2010 |
| 715 | Excavated Earth Outlet Sediment Trap | 1 | 1 February 2010 |
| 716 | Embankment Earth Outlet Sediment Trap | 1 | 1 February 2010 |
| 717 | Sediment Basins (Stone Outlet or Pipe Outlet) |
1 | 1 February 2010 |
| 719 | Inlet Protection Barriers | 1 | 1 February 2010 |
| 722 | Portable Sediment Tank | 1 | 1 February 2010 |
| 723 | Sediment Sump Pit (with drawing) | 2 | 1 February 2010 |
| 724 | Stabilized Construction Access (Type I - Rock) | 2 | 1 February 2010 |
| 725 | General Source Controls | 2 | 1 November 2008 |
| 727 | Level Spreader | 1 | 1 February 2010 |
| 730 | Concrete Truck Washout Structures | 1st Issue | 1 February 2010 |
| 741 | Inlet Protection Barrier (for Stage II Inlets, Gravel Bags) (with drawing) | 3 | 1 February 2010 |
| 750 | Rock Filter Dams | 2 | 1 February 2010 |
| 751 | SWPPP Inspection and Maintenance | 1st Issue | 1 February 2010 |
| 1000 | Traffic Signal Installation and Modification | 1st Issue | 1 March 2012 |
| 1210 | Intelligent Transportation System (ITS) Controller Cabinet Assembly | 1st Issue | 1 March 2012 |
| 2070 | Advanced Transportation Controller | 1st Issue | 1 March 2012 |
Revised: 2/1/11
If you have a question related to the specifications contact: Jimmy McClintock.