You may be trying to access this site from a secured browser on the server. In 2007, the FAA approved construction of a new center field taxiway (Taxiway Mike) to alleviate airfield congestion. DM[2TI=lGQx7 UoFK1: V;39LFOr7LxPF{BL3he6X^@v[QhWiF!l3F) RTIBfx0.T F%n3h80Q,`[2xa%VLP /WD@j rK .9{N[#o/Fad#OK6YeqsyHl2M)V]/Nf(V?!1Oaw)fM 8JG)31m. main search page where you can specify additional parameters. The contract will identify the designated method. For combination slope/bench systems in TYPE A soil and a trench depth of less than 8 feet, the steepest maximum allowable slope is 53 degrees from the horizontal. Without proper slope protection, a serious erosion problem known as "beaching" can develop on the upstream slope. California Department of Transportation item code description; 729012 rock slope protection fabric (class 10) 729011 rock slope protection fabric (class 8) 723220 concreted-rock slope protection (1/4 t, class v, method b) (ton) Civil engineers and landscape architects need proven solutions to control soil erosion, stabilize slopes, enable drainage and create a visually pleasing landscape. The plans indicate the minimum depths of foundations. When slope paving with concrete pavers is specified, ensure the special provision requirements are met. 3 0 obj Draw Down Device, Sediment Basin Schematic - Vert. ), Geocomposite Wall Drain (w/ 6oz on 1 or 2 sides - Please specify.). (You may enter part of the word or the whole phrase). 2019-07-30T13:47:33-04:00 Chapter 4: Construction Details, Section 72: Slope Protection, Direction of flow and angle of impingement at various water stages, Capability of adjacent soil types to resist erosion from wash and eddy currents. Decide whether modifications are necessary as a result of changed conditions. Ensure that rocks of the specified sizes and shapes are being used. Rock Slope Armor is a layer of rock, such as ditch lining rock, cobble rock, concrete rubble, or riprap, which is hand or mechanically placed on an erodible soil slope. Take care not to tear the filter fabric during installation. @>|0fWp^,Y/T!*gprE."8hjjJ7kUfmYxTsX"CfU2TL]Gdb_Kg,GA/`U)H!hkJARD[R` The plans will designate which type applies at each location. Click on a heading to sort by that heading. FDM 10-10-3 /OP true Use 5 to 7 st Source: Caltran Highway Design Manual, Chapter 870 For RSP Classes I thru VIII, use Class 8 RSP-fabric which has lower weight per unit area and it also has lower toughness (tensile x elongation, both at break) than Class 10 RSP-fabric. endobj (800) 518-2290, Providing the most comprehensive geosynthetic lines in the industry. Transportation Specifications Section 96-1.02I for Rock Slope Protection Fabric, Class 8, nonwoven geotextile. The small-rock slope protection method consists of excavating and backfilling the footing trench, placing rock slope protection fabric as shown, and placing small rocks on the slope. Contact your local TenCate Geosynthetic representative for the proper use and specification of these products. Need quick pricing on Erosion Control Fabric? Contact Us For RSP Classes I thru VIII, use Class 8 RSP-fabric which has lower weight per unit area and it also has lower toughness (tensile x elongation, both at break) than Class 10 RSP-fabric. XYo[unHCih,(~ t@K{ y.EmvKhy?_\F6.nO?iV5FlD,#t~J7z@Al.z_ooA=H /$Q-Aav. endobj Class E Revetment Erosion Stone or Class E Revetment Erosion Stone or A A Engineering Fabric Ditch Bottom 2' 2' Anchor Slot W 6'' min. Woven Stabilization and Separation Geotextiles, - Dimensions & Weights for EcoTubes Geotextile Dewatering Tubes, - Dimensions & Weights for EnviroGrid Cellular Confinement, - Material Safety Data Sheet (MSDS) - Drainboard, - Material Safety Data Sheet (MSDS) - Stratagrid, - Material Safety Data Sheet (MSDS) - Envirogrid, - Product Advantages of EcoTubes Geotextile Dewatering Tube, - Product Benefits of EcoTubes Sludge Dewatering Tubes, - Product Benefits of US Fabrics' Foundation Drains, - Product Benefits of US Fabrics' Sheet Drains, Design/Installation Guidelines; Applications, - Comparing Old Style & New Style - Strata Geogrid, - French Drain Exterior Foundation Install, - Geogrid & Welded Wire Form Inside Corner Placement, - Installation Guideline for Separation Heavy Geotextile, - Installation Guideline for Separation Medium Geotextile, - Sheet Drain Exterior Foundation Install, - Theoretical Tube Volumes & Dewatering Capabilities, - Typical Cross Section - Vegetated Reinforced Soil Slope, - Equivalent Products for Composite Drains, - Volumes & Dewatering Capabilities for EcoTubes Geotextile Dewatering Tubes, - Geogrid Quality for Finished Product and Raw Materials, - Use Woven Geotextiles Instead of Geogrids, - Municipal Waste Water & Water Treatment w/ EcoTubes, - SRW (Segmental Retaining Wall) Drainage. Obtain initial samples and have them tested for the specified attributes. Check the area to be protected to ensure that the required expansion joints are in place. Ensure the equipment used during spreading does not crack the rock. Soil Stabilization Matting - Slope Application, Clear Water Pipe Through Silt Fence/Super Silt Fence, Temporary Stone Outlet Structure (1 of 2, PDF only), Temporary Stone Outlet Structure (2 of 2, PDF only), Temporary Gabion Outlet Structure (1 of 2, PDF only), Temporary Gabion Outlet Structure (2 of 2, PDF only), Standard Inlet Protection (1 of 2, PDF only), Standard Inlet Protection (2 of 2, PDF only), Combination Inlet Protection (1 of 2, PDF only), Combination Inlet Protection (2 of 2, PDF only), Pipe Outlet Sediment Trap ST-I (1 of 3, PDF only), Pipe Outlet Sediment Trap ST-I (2 of 3, PDF only), Pipe Outlet Sediment Trap ST-I (3 of 3, PDF only), Stone/Riprap Outlet Sediment Trap ST-II (1 of 3, PDF only), Stone/Riprap Outlet Sediment Trap ST-II (2 of 3, PDF only), Stone/Riprap Outlet Sediment Trap ST-II (3 of 3, PDF only), Riprap Outlet Sediment Trap ST-III (1 of 3, PDF only), Riprap Outlet Sediment Trap ST-III (2 of 3, PDF only), Riprap Outlet Sediment Trap ST-III (3 of 3, PDF only), Concentric Trash Rack and Anti-Vortex Device (1 of 2, PDF only), Concentric Trash Rack and Anti-Vortex Device (2 of 2, PDF only), Types of Couplers for Corrugated Steel Pipe, Sediment Basin Schematic - Horiz. requirements. 0000004037 00000 n Click on the to search for an item in For details about concrete production, review Section 4-90, Concrete, of this manual. Riprap is a permanent layer of large, angular stone, cobbles, or boulders typically used to armor, stabilize, and protect the soil surface against erosion and scour in areas of concentrated flow or wave energy. 2 0 obj Refer to Section 4-96, Geosynthetics, of this manual for guidelines on inspecting and accepting rock slope protection fabric. 0000009704 00000 n endobj Geotextiles. On a cut slope, this could be due to . or call 0000009682 00000 n Geotextiles have been in use for thousands of years dating back to the Egyptian Pharaohs. Temporary structures shall be left in place until adequate vegetation and the permanent . Flat or needle shaped rock must not be used unless the individual rock thickness is greater than 0.33 times the length. Polypropylene is stable within a pH range of 2 to 13. This handbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. Please enable JavaScript in your browser. Soil Stabilization Matting - Channel Application, Temp. Fabric must be RSP fabric that complies with the class shown in the following table: Rock must be cobble, gravel, crushed gravel, crushed rock, or any combination of these. Contract Cost Data Project Details. uuid:bc193511-b4f2-4d99-b47d-5ec173dc2f21 com routes make excellent running trails for serious runners and casual joggers, alike. <>stream When placing rocks, the contractor should ensure each placed rock is stable and not dependent on the one on top to hold it in place. RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. Ensure concrete is cured by one of the specified methods. Testing must follow the frequencies shown in Section 6-1, Sample Types and Frequencies, of this manual. EZw5'dr=`j+2\8:U.|V,%)~h/X8ps Lap 6'' min. There are three material gra requirements based on required rock layer dation thicknesses. For Type R, F, or Common stone riprap, provide Type 2 filter fabric when shown on the plans. Products with a are available to meet BABA (Build America, Buy America) requirements. The Maryland General Assemblys Office of Legislative Audits operates a toll-free fraud hotline to receive allegations of fraud and/or abuse of State government resources. /Filter/FlateDecode These supersede the previous Caltrans Riprap Sizes. 4-7203C Small-Rock Slope Protection The small-rock slope protection method consists of excavating and backfilling the footing trench, placing rock slope protection fabric as shown, and placing small rocks on the slope. At the terminals of protection, ensure the contractor is particularly careful to avoid erosion and undercutting. 1, METHOD B) (CY), ROCK SLOPE PROTECTION (NO. This translates to a 0.75H: 1V incline and is shown below. K@^9t% OZ$Mb Ne#^/_*Zw;*T_]k. Angular shaped rock may be used on any planned slope. <>/Metadata 7 0 R/OpenAction 8 0 R/Outlines 110 0 R/PageLayout/SinglePage/PageMode/UseOutlines/Pages 11 0 R/StructTreeRoot 137 0 R/Type/Catalog/ViewerPreferences<>>> endobj If your 20'x10' patio is to have a 6" base, then you should excavate a total area of 21' (20' +6" +6") by 11' (10' +6" +6"). Method B is not restrictive with respect to the placement of individual rocks. Concrete canvas (CC) has the potential to become a widely used slope protection material owing to advantages such as flexibility, fast construction with low labor costs, and quick strength development. <> There are three material gradation requirements based on required rock layer thicknesses. When shotcrete is to be used, review Section 4-53, Shotcrete, of this manual. endstream Applicability Rock Slope Armor is applicable to: Slopes where unanticipated flows are encountered. {s9y^ The gabion method consists of placing wire mesh box-shaped baskets filled onsite with hard, durable rocks. endobj The chart below lists US Fabrics' geosynthetics meeting CALTRANS specifications. - Shoreline Protection with EcoTubes™ CALTRANS does not have an APL/QPL for fabrics. Click on the to send the number to the Rock grading and quality requirements per Standard Specifications. 2 0 obj Provide filter fabric in accordance with DMS-6200, Filter Fabric. For protection stone riprap, provide Type 2 filter fabric unless otherwise shown on the plans. If using geotextile fabric, place on the smoothed foundation, overlap the edges at least 12 inches and secure with anchor pins spaced every three feet along the overlap. Geosynthetic Bond Breaker (Call for product. :t4NV]j{/mtqF*sx[%M 5%(/%(Z-F|[atK5[~{a~EwDCV:/#K)f~7*RsAnnJa>Jg-m^>\V7EOG3o?nGYIFze/l( I!&VXo]mm#7I0:EK7_LFwek Keep records up to date. If necessary, order additional weep holes. Center splash basin . mum slope of two feet of horizontal distance for one foot of vertical rise. engineering fabric pinned to the slope, or both a . Inspect the rock to ensure it has been cleaned of any adhering dirt and clay and is moistened before concrete placement. You may check the size of rock by roughly measuring the size and converting the volume to mass. 0000012187 00000 n Refer to Section 4-96, Geosynthetics, of this manual for guidelines for inspecting and accepting rock slope protection fabric. To respond to the different problems associated with instability of rock faces, Geofabrics also has a broad range of independently verified rockfall mitigation systems. /Length 5601 JavaScript is required to use content on this page. This has been superseded by Caltrans New Riprap Classes. Mirafi 180N is a moderate weight nonwoven geotextile that meets AASHTO M288 Class 1 geotextiles for separation and subsurface drainage. Also, ensure the contractor does not drop rock into place; otherwise, cracking or breaking may occur. The finish surface must be roughened by brushing to expose rocks. Maximum slope 1.5:1 horiz:vert, (67% or 34) or flatter, and is limited to slopes < 30' of uninterrupted length. Place a highly permeable and appro-priately sized geotextile filter fabric on the prepared slope following the manufacturer's recommendations. Enter the item description of the code you wish to search for: xZrFou D[&! For measuring concrete or shotcrete, refer to Sections 4-90, Concrete, or 4-53, Shotcrete, of this manual. Roll size is 15'x300 Equivalent to Mirafi 1120NC or Skaps GT112 (Click here for spec) Weight will vary based on density of rock available for the project. Observe construction to ensure the contractor does the placing, finishing, and curing as specified. 2005), although maintenance considerations may serve to reduce this maximum size. C-15 Permeable rock jetties (fish habitat structures) C-8 C-16 Close-up of permeable rock jetty C-8 C-17 RSP tied to solid rock outcrop, natural impermeable retard (jetty) C-9 C-18 Soil-filled voids, natural vegetation C-9 C-19 Channel cut through deposited beach sand C-10 C-20 Layers of deposited sand C-10 Ensure existing shrubs and trees are protected so that they continue to anchor the surrounding soil. More simply put, if it is made of fabric and buried in the ground it is probably a geotextile! When changes are made, maintain records of details, depths, heights, and other dimensions, and enter these on the as-built plans. All rights reserved. 0000002336 00000 n 0000013346 00000 n Vegetation (see . Mirafi 160N is a lightweight nonwoven geotextile that meet AASHTO M288 Class 2 geotextiles for separation and subsurface drainage. (see Riprap Slope Protection Worksheet). Riprap is typically placed along graded ditch, channel, and shoreline banks over geotextile, which prevents erosional undercutting. L Earth Compacted Fabric Engineering 6'' 1'-0'' centers Staples at 6'' 2'' 6'' (Rock Splash Basin) TYPE 4 1 2 (Rock Slope Protection) TYPE 5 Staples at 12 inch centers. Slope paving is a broader term that covers a variety of methods for paving slopes, including colored slope paving, exposed aggregate slope paving, and slope paving with concrete pavers. Temp. Angular shaped rock may be used on any planned slope. Note any changes that may have occurred between the preliminary design studies and the start of construction. Be sure to consult your local project engineer or construction professional about the rock sizing and particular . Close observation is required during rock placement to detect any damage to the fabric. 6 0 obj 1, METHOD B) (TON), ROCK SLOPE PROTECTION (NO. This information is to be used only as a guide. Use the size and composition of yarn that is recommended by the fabric manufacturer. <>/Font<>>>/Fields[]>> Barrier Landscape Edging & Paver Edging 6'/8. Erosion Control Fabrics featured here have been used in a wide range of applications including slope stabilization, sediment containment, runoff filtration, home protection, and vegetative regrowth. 0000002021 00000 n > Click it again to reverse the order. Mirafi N-Series Product Description Sheet. Copies of these details are made available below in both Adobe Portable Document Format (PDF) and AUTOCAD Drawing (DWG) file formats. Suggested levels of inspection for slope protection activities are: Ensure the contractor is actively performing quality control on placing slope protection and slope paving throughout the operations. The concreted-rock slope protection method is used where large rock is not economically available in large quantities, yet a heavy, service type of protection is required. Mirafi N-Series nonwovens combine high water flow rates, high soil interaction and durability while providing excellent soil particle retention. C-15 Permeable rock jetties (fish habitat structures) C-8 C-16 Close-up of permeable rock jetty C-8 C-17 RSP tied to solid rock outcrop, natural impermeable retard (jetty) C-9 C-18 Soil-filled voids, natural vegetation C-9 C-19 Channel cut through deposited beach sand C-10 C-20 Layers of deposited sand C-10 Cold storms bringing wind, rain and low-elevation snow heavy at times are forecast through early March. Order corrective work when necessary. 0000008354 00000 n Ensure that the contractor places the fabric before placing the rock slope protection. 8 0 obj endobj For maximum effect, both components must be integrally planned prior to road construction. When exposed aggregate slope paving is specified, ensure any concrete set retarders are used in accordance with manufacturer instructions. 0000007052 00000 n 0000012468 00000 n endobj 0000002313 00000 n Contact our sales team at 1-863-270-8118 to discuss your erosion control requirements. (For large riprap, consider a four inch layer of sand to protect the . If there are no prevailing agency specifications, it is recommended to follow AASHTO M288 for subsurface drainage applications. BMP040 "rock slope protection (no fabric)" as applicable. Obtain rock samples for acceptance tests. Intermittent inspection of placement of slope protection, slope paving, and fabric operations. This section provides guidelines for inspecting slope protection for work specified under Section 72, Slope Protection, of the Standard Specifications. 4 0 obj The concrete slope protection method consists of paving the embankment with portland cement concrete. The Standard Specifications provide two methods of placement for this type of protection: Method A and Method B. <>stream Manufacturers information can be found at: The color shall be black unless otherwise specified in the contract documents. 5. The method for placing rock will either be Method A or Method B, whichever the contract designates, as discussed in Section 4-7203A, Rock Slope Protection, of this manual. The challenge was to construct a new taxiway over areas that were built on tidal flats and land reclaimed from Boston Harbor. The devices include ground covers and channel liners such as: 1. Slope protection is usually needed to protect the upstream slope against erosion due to wave action. Slope protection structures are to be used where concentrated water will cause excessive erosion on existing and/or recent cut and fill slopes. Check to ensure that slopes and foundation areas are graded and compacted to specified tolerances. Rock Slope Protection practice is intended for slopes too unstable for revegetation practices alone. Rock mesh slope protection is a technique to control rockfalls . Erosion control is an important element of successful slope protection. Thishandbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. (One call ordering and delivery). %PDF-1.3 % There are three material gradation requirements based on required rock layer thicknesses. For RSP Classes IX thru XI, use Class 10 RSP-fabric. Standard contract items and descriptions for Caltrans projects. Use all suitable material in the work. Graniterock has a 101-year history of providing high quality products and service. Retaining Walls & Slope Stability Before placement of the broken concrete, inspect the material and be sure the reinforcement has been removed flush to the surface of concrete. 1 0 obj The latest list of Item Codes is available from HQ Smooth the graded foundation. Shop Lowe's for solutions to control erosion on slopes, as well. When rock slope protection fabric is required for either method, ensure the contractor places the fabric before placing the rock slope protection. 1800 Washington Blvd., Baltimore, MD 21230, Stormwater, Dam Safety, and Flood Management Home, Plan Review for State and Federal Projects. 0000009975 00000 n Of the various types of instability problems, foundation failures are the most serious and most common. Complete the Patio or Walkway 6. Draw Down Device, Temporary Access Bridge (1 of 2, PDF only), Temporary Access Bridge(2 of 2, PDF only), Temporary Access Culvert (1 of 2, PDF only), Temporary Access Culvert (2 of 2, PDF only), Onsite Concrete Washout Structure (1 of 2, PDF only), Onsite Concrete Washout Structure (2 of 2, PDF only), If you are experiencing difficulty accessing these details or if there are anyquestions, please contact the Sediment, Stormwater & Dam Safety Program at (410) 537-3543 or by email (Amanda.Malcolm@maryland.gov, National Human Trafficking Hotline - 24/7 Confidential. concreted-rock slope protection (1/2 t, class vii, method b) (ton) 723215 concreted-rock slope protection (1/4 t, class v, method b) (cy) 723220 concreted-rock slope protection (1/4 t, class v, method b) (ton) 729011 rock slope protection fabric (class 8) 729012 rock slope protection fabric (class 10) 750020 rigid rail fall protection system We're available on the following channels. Flat or needle shaped rock must not be used unless the individual rock thickness is greater than 0.33 times the length. construction contract standards page. (a) Exception: US 250NW is 5 pounds short on "grab breaking load" for Sediment Filter Bags. Place a layer (six inch minimum) of When slope protection is paid by volume, review the plans and quantity calculations in the resident engineers file to determine if there is sufficient detail and accuracy to be used in the project records. If you have any questions or would like to learn more, please contact us. %PDF-1.4 If you have any questions about the consistency of the gabions, you may also order the unit weight to be verified during the course of the work. Decide whether an adequate number has been provided for the particular installation. They are designed to protect against raveling-type rockfall that involves small-volume slope failures (up to about 7.6 m3 or 10 yd3) or blocks up to 1.5 m (5 ft), depending on the strength of the mesh used (Muhunthan et al. 2. endobj Mirafi 135N, 140NL and 140NC are lighter weight versions of Mirafi 140N . (b) Paving fabric specification requires a minimum mass of 4.1 sy/oz. If the rock layer is shown as 7 inches thick, comply with grading shown in the following table: If the rock layer is shown as 5 inches thick, comply with the grading shown in the following table: If the rock layer is shown as 4-inches thick, comply with grading shown in the following table: Granular material must contain at least 90 percent crushed particles when tested under California Test 205. 7 0 obj 2, METHOD B) (TON) (ENGMET), ROCK SLOPE PROTECTION (NO. Any springs or water courses that might affect the stability of the design. Mirafi N-Series nonwoven polypropylene geotextiles are used for soil separation, drainage in Transportation, Building Site, and Water Infrastructure projects such as subsurface drainage, permanent erosion control and roadway separation applications.