endobj For Type R, F, or Common stone riprap, provide Type 2 filter fabric when shown on the plans. If you have any questions or would like to learn more, please contact us. 0000004037 00000 n 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. Refer to Section 4-96, Geosynthetics, of this manual for guidelines on inspecting and accepting rock slope protection fabric. Place a highly permeable and appro-priately sized geotextile filter fabric on the prepared slope following the manufacturer's recommendations. e&C+uPaN.%y5*>EJ9gcD,i4E|+I,b0 f)#H+E m:(B(u1b)Q%>cayKh 0SYB@RenkJ1HJ b#'mYtQS1 HU" 2`VoVsB: ~',2g(5DZsHrxUR5~4 4_ {YNjTjdV \ (aazR#;@1""(*$4"!f)G(J (800) 518-2290, Providing the most comprehensive geosynthetic lines in the industry. 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. This article studies the mechanical properties and stability of CC slope protection by comparing it with conventional material (shotcrete). The latest list of Item Codes is available from HQ Slope protection structures are to be used where concentrated water will cause excessive erosion on existing and/or recent cut and fill slopes. At the terminals of protection, ensure the contractor is particularly careful to avoid erosion and undercutting. 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"). There are three material gra requirements based on required rock layer dation thicknesses. 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. Fabric used for rock slope protection, temporary construction roadways, separation, stabilization, reinforcement, drainage, and erosion control. %PDF-1.4 % Flat or needle shaped rock must not be used unless the individual rock thickness is greater than 0.33 times the length. 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. Rock riprap consists of loose rock that is dumped on the slope and distributed. endobj The best slope protection type for a given situation depends on the conditions where the installation is to be made, availability of protection material, cost of the various types, and protection desired. Thishandbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. << When slope paving with concrete pavers is specified, ensure the special provision requirements are met. If extensive slope protection problems are anticipated or encountered during construction, refer these to the design engineer and the project manager, who may in turn obtain the advice of the Caltrans Bank and Shore Protection Committee.. Mirafi N-Series nonwovens combine high water flow rates, high soil interaction and durability while providing excellent soil particle retention. 0000002313 00000 n Polypropylene is stable within a pH range of 2 to 13. <>/XObject<>/Properties<>>>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> Mirafi 1100N, 1120N and 1160N are heavy weight nonwoven geotextiles for more severe or extremely harsh conditions, such as rip-rap and revetment applications. xZrFou D[&! The Standard Specifications provide two methods of placement for this type of protection: Method A and Method B. in a MS Word document format from the Verify the types of measurements and records necessary to support payment for the work. Placement of Bedding Material 1. Shop Lowe's for solutions to control erosion on slopes, as well. <>/Font<>>>/Fields[]>> If the slope is steeper than 2:1, do not use rounded boulders and cobbles. Take the following steps when inspecting the work and materials for slope protection: In addition to the general functions discussed above, the following items apply to specific types of slope protection. It consists of a layer of very large stones interlocked together and acts as a barrier on slopes that are unstable because of seepage problems or in areas that are receiving a large concentrated flow. Consult engineer to ensure applicable design requirements are met. XYo[unHCih,(~ t@K{ y.EmvKhy?_\F6.nO?iV5FlD,#t~J7z@Al.z_ooA=H /$Q-Aav. /OPM 1 0000002336 00000 n Properly designed and planted vegetative covers play /Length 5601 Otherwise, placement could result in what is known as rockers or unstable rocks. When evidence exists that the foundation depth is inadequate, obtain both the design and hydraulics engineers concurrence with a change order to deepen the foundation. 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. FDM 10-10-3 Links to important documents and pages can be found below the chart. 0000008331 00000 n For maximum effect, both components must be integrally planned prior to road construction. Rock Channel Protection Paved Gutter 601.13 Basis of Payment 601.01 Description. Information reported to the hotline in the past has helped to eliminate certain fraudulent activities and protect State resources. The gabions are placed on filter fabric as detailed in the plans and specifications. Refer to Section 4-96, Geosynthetics, of this manual for guidelines for inspecting and accepting rock slope protection fabric. Your search for great running gear starts and ends with us. If there are no prevailing agency specifications, it is recommended to follow AASHTO M288 for subsurface drainage applications. Standard contract items and descriptions for Caltrans projects. 0000002021 00000 n 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. 0000008354 00000 n "QamV(Z3VL> @>|0fWp^,Y/T!*gprE."8hjjJ7kUfmYxTsX"CfU2TL]Gdb_Kg,GA/`U)H!hkJARD[R` 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. Maximum slope 1.5:1 horiz:vert, (67% or 34) or flatter, and is limited to slopes < 30' of uninterrupted length. These products can be used in areas where they meet the local agency requirements. 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. Ensure the equipment used during spreading does not crack the rock. 5 0 obj They blanket the soil, protecting it from wind and water forces. The chart below lists US Fabrics' geosynthetics meeting CALTRANS specifications. Click on the to search for an item in Properly designed slope protection and stabilization has to include two components: a vegetational-biological and a mechanical-structural component. . (One call ordering and delivery). 2. Erosion control devices provide direct protection to the soil surface therefore, are considered one the best measures for preventing erosion. Roll size is 15'x300 Equivalent to Mirafi 1120NC or Skaps GT112 (Click here for spec) RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. 7 0 obj 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. 3 0 obj the contract cost database using the most recent year of data. GHnBc__'h1'u]SO0P+R&yGeJ$FP?cSp28 1}9AQ #T6Bc*)_vU"]T hY# For details about concrete production, review Section 4-90, Concrete, of this manual. 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. Place a layer (six inch minimum) of construction contract standards page. 8 0 obj Nominal RSP class by median particle diameterb Nominal median Rock Slope Protection Fabric, used in slope stabilization projects (see Technical Note on Rock Slope Protection / Rip Rap) When required by the Project Engineer, a Certificate of Compliance for each type of fabric being used should be issued by the supplier and furnished to the Engineer. /Filter/FlateDecode Caltrans requires the use of these new RSP gradations starting August 1st, 2016 in new projects and those not yet at 30 percent PS&E stage. 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. The challenge was to construct a new taxiway over areas that were built on tidal flats and land reclaimed from Boston Harbor. Of the various types of instability problems, foundation failures are the most serious and most common. Order corrective work when necessary. Weight will vary based on density of rock available for the project. Copyright 2007 State of California, (You may enter part of the word or the whole phrase), 1.2 M CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET) (METRIC), 1.5 M CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET) (METRIC), 1.8 M CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET) (METRIC), 108" CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET), 2.1 M CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET) (METRIC), 2.4 M CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET) (METRIC), 24" CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET), 48" CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET), 60" CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET), 600 MM CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET) (METRIC), 72" CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET), 84" CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET), 96" CAST-IN-DRILLED-HOLE CONCRETE PILING (ROCK SOCKET), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/2 T, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, CLASS V, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, CLASS V, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, CLASS V, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, CLASS V, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (1/4 T, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (150 LB, CLASS III, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (150 LB, CLASS III, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (20 LB, CLASS I, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (20 LB, CLASS I, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (20 LB, CLASS I, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (20 LB, CLASS I, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (60 LB, CLASS II, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (60 LB, CLASS II, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (60 LB, CLASS II, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (60 LB, CLASS II, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (COBBLE, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (COBBLE, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (COBBLE, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (COBBLE, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (FACING, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (FACING, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (FACING, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (FACING, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (LIGHT, 150 LB, CLASS III, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (LIGHT, 150 LB, CLASS III, METHOD B) (TON), CONCRETED-ROCK SLOPE PROTECTION (LIGHT, METHOD A) (CY), CONCRETED-ROCK SLOPE PROTECTION (LIGHT, METHOD A) (TON), CONCRETED-ROCK SLOPE PROTECTION (LIGHT, METHOD B) (CY), CONCRETED-ROCK SLOPE PROTECTION (LIGHT, METHOD B) (TON), REMOVE ROCK AND DEBRIS FROM CULTIVATED AREA, ROCK EXCAVATION (CONTROLLED BLASTING) (ENGMET), ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD A) (CY), ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD A) (TON), ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD B) (CY), ROCK SLOPE PROTECTION (1/2 T, CLASS VII, METHOD B) (TON), ROCK SLOPE PROTECTION (1/2 T, METHOD A) (CY), ROCK SLOPE PROTECTION (1/2 T, METHOD A) (TON), ROCK SLOPE PROTECTION (1/2 T, METHOD B) (CY), ROCK SLOPE PROTECTION (1/2 T, METHOD B) (TON), ROCK SLOPE PROTECTION (1/4 T, CLASS V, METHOD B) (CY), ROCK SLOPE PROTECTION (1/4 T, CLASS V, METHOD B) (TON), ROCK SLOPE PROTECTION (1/4 T, METHOD B) (CY), ROCK SLOPE PROTECTION (1/4 T, METHOD B) (TON), ROCK SLOPE PROTECTION (150 LB, CLASS III, METHOD B) (CY), ROCK SLOPE PROTECTION (150 LB, CLASS III, METHOD B) (TON), ROCK SLOPE PROTECTION (1T, CLASS VIII, METHOD A), ROCK SLOPE PROTECTION (1T, CLASS VIII, METHOD B), ROCK SLOPE PROTECTION (1T, CLASS VIII, METHOD B) (TON), ROCK SLOPE PROTECTION (1T, METHOD A) (ENGMET), ROCK SLOPE PROTECTION (1T, METHOD B) (ENGMET), ROCK SLOPE PROTECTION (20 LB, CLASS I, METHOD B) (CY), ROCK SLOPE PROTECTION (20 LB, CLASS I, METHOD B) (TON), ROCK SLOPE PROTECTION (2T, CLASS IX, METHOD A), ROCK SLOPE PROTECTION (2T, METHOD A) (ENGMET), ROCK SLOPE PROTECTION (3/8 T, CLASS VI, METHOD B) (CY), ROCK SLOPE PROTECTION (3/8 T, CLASS VI, METHOD B) (TON), ROCK SLOPE PROTECTION (300 LB, CLASS IV, METHOD B) (CY), ROCK SLOPE PROTECTION (300 LB, CLASS IV, METHOD B) (TON), ROCK SLOPE PROTECTION (3T, CLASS X, METHOD A), ROCK SLOPE PROTECTION (4T, CLASS XI, METHOD A), ROCK SLOPE PROTECTION (4T, METHOD A) (ENGMET), ROCK SLOPE PROTECTION (60 LB, CLASS II, METHOD B) (CY), ROCK SLOPE PROTECTION (60 LB, CLASS II, METHOD B) (TON), ROCK SLOPE PROTECTION (8T, METHOD A) (ENGMET), ROCK SLOPE PROTECTION (FACING, METHOD B) (CY), ROCK SLOPE PROTECTION (FACING, METHOD B) (TON), ROCK SLOPE PROTECTION (LIGHT, METHOD B) (CY), ROCK SLOPE PROTECTION (LIGHT, METHOD B) (TON), ROCK SLOPE PROTECTION (NO. 6'' min. In 2007, the FAA approved construction of a new center field taxiway (Taxiway Mike) to alleviate airfield congestion. This section provides guidelines for inspecting slope protection for work specified under Section 72, Slope Protection, of the Standard Specifications. At TenCate ourgoal is your success. <> Copies of these details are made available below in both Adobe Portable Document Format(PDF) and AUTOCAD Drawing (DWG) file formats. For method A placement and the class of RSP described, comply with the rock grading shown in the following table: For method B placement and the class of RSP described, comply with the rock grading shown in the following table: Rock must have the values for the material properties shown in the following table: Select rock so that shapes provide a stable structure for the required section. Geotextiles have been in use for thousands of years dating back to the Egyptian Pharaohs. 0000012468 00000 n When rock slope protection fabric is required for either method, ensure the contractor places the fabric before placing the rock slope protection. The following common types of slope protection are covered in this section: Other protective devices are used in conjunction with highway construction, and when used, they are included in the contracts special provisions. When shotcrete is to be used, review Section 4-53, Shotcrete, of this manual. 0000002044 00000 n This handbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. Ensure the timber spacers are of the required material and spaced as planned. mum slope of two feet of horizontal distance for one foot of vertical rise. The method is particularly adaptable to locations where high-velocity flow is not detrimental, but desirable, and the hydraulic efficiency of smooth surfaces is important. 5. Contact your local TenCate Geosynthetic representative for the proper use and specification of these products. /OP true Be sure to consult your local project engineer or construction professional about the rock sizing and particular . | Conditions of Use | Privacy Policy 1. All rights reserved. Transportation Specifications Section 96-1.02I for Rock Slope Protection Fabric, Class 8, nonwoven geotextile. main search page where you can specify additional parameters. Mirafi 180N is a moderate weight nonwoven geotextile that meets AASHTO M288 Class 1 geotextiles for separation and subsurface drainage. Intermediate, or B dimension (i.e., width) where A dimension is length, and C dimension is thickness. EZw5'dr=`j+2\8:U.|V,%)~h/X8ps 1, METHOD B) (TON), ROCK SLOPE PROTECTION (NO. All items. Applicability Rock Slope Armor is applicable to: Slopes where unanticipated flows are encountered. There are three material gradation requirements based on required rock layer thicknesses. Erosion Control Blankets Wattles help slow water runoff and reduce soil erosion. The contract will identify the designated method. IMPLEMENTATION OF ROCK SLOPE PROTECTION (RSP) DESIGN (For large riprap, consider a four inch layer of sand to protect the . US 160NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. Before placement of the broken concrete, inspect the material and be sure the reinforcement has been removed flush to the surface of concrete. 72-2.02B Fabric Fabric must be RSP fabric that complies with the class shown in the following table: 72-4 SMALL-ROCK SLOPE PROTECTION 72-4.02 MATERIALS Copyright 2023 TenCate Geosynthetics Americas. Slope Protection consists of rock, concrete, or concreted rock or slope paving, ROCK SLOPE PROTECTION ROCK SHOULD DEMONSTRATE, THE PLACEMENT METHODS DESIGNATED BY CALTRANS, ADVANTAGES OF USING RIP RAP OR STONE PROTECTION FROM WILSON QUARRY (AROMAS), Make certain of the Product RequiredProject Service Requirements, Specifying Agency (Caltrans, Green Book, Army Corp or Other), Special Provisions addressing additional specifications, Certification Required (Submittals) Caltrans, Army Corps, other agency or engineer, Quantity Required (Specific GravityConversion Tons to Cubic Yards), Product Availability (Available when required, can handle Daily Shipping Requirements), The Reputation of your Supplier and their Products & Services, 100% Crushed Granite (Provides Superior Stability and Durability), Many different Rip Rap types available:All Caltrans Classes and Sizes, High Daily Production and Shipping Capacity (Can Handle Large & Small Jobs), Graniterock can provide delivery to your jobsite if desired. 4 0 obj The bid item list and plans will specify which type of slope protection is to be performed. 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. <> endobj If the rock contains an excess of fines or inadequate voids, the desired results may be impossible to obtain. 3. Benchmark inspection of sampling and testing of rocks. Center splash basin . trailer << /Size 489 /Info 438 0 R /Root 464 0 R /Prev 989742 /ID[<23d8c9b814a334ef8bf252da6b923edc><23d8c9b814a334ef8bf252da6b923edc>] >> startxref 0 %%EOF 464 0 obj << /Pages 445 0 R /Type /Catalog >> endobj 487 0 obj << /S 1440 /Filter /FlateDecode /Length 488 0 R >> stream 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. Copyright Maryland.gov. Geotextiles. Obtain rock samples for acceptance tests. The Difference Mirafi N-Series Nonwoven Geotextiles Make: The placement of a flexible, porous geotextile between dissimilar materials so that the integrity and intended functions of both materials remain intact or are improved. Observe construction to ensure the contractor does the placing, finishing, and curing as specified. Contact our sales team at 1-863-270-8118 to discuss your erosion control requirements. Before construction of any type of slope protection, review the plans, Standard Specifications, special provisions, any pertinent preliminary test data, and the location of the installation. 2019-07-30T13:44:04-04:00 <> The color shall be black unless otherwise specified in the contract documents. 0000009704 00000 n Click on a heading to sort by that heading. We're available on the following channels. Mirafi 160N is a lightweight nonwoven geotextile that meet AASHTO M288 Class 2 geotextiles for separation and subsurface drainage. endobj Protection involves constructing a heavy mass of smaller rocks bound together by concrete. Smooth the graded foundation. 10 0 obj Cold storms bringing wind, rain and low-elevation snow heavy at times are forecast through early March. US Fabrics is proud to serve the geotextile needs of the State of Califronia, including: Los Angeles, San Diego, San Jose, San Francisco, Fresno, Sacramento, Long Beach, Oakland, Bakersfield, Anaheim, Santa Ana, Riverside, Stockton, Chula Vista, Fremont, Irvine, San Bernardino, Modesto, Oxnard, Fontana, Moreno Valley, Glendale, Huntington Beach, Santa Clarita, Garden Grove, Santa Rosa, Oceanside, Rancho Cucamonga, Ontario, Lancaster, Elk Grove, Palmdale, Corona, Salinas, Pomona, Torrance, Hayward, Escondido, Sunnyvale, Pasadena, Fullerton, Orange, Thousand Oaks, Visalia, Simi Valley, Concord, Roseville, Santa Clara, Vallejo, Victorville, El Monte, Berkeley, Downey, Costa Mesa, Inglewood, Ventura, West Covina, Norwalk, Carlsbad, Fairfield, Richmond, Murrieta, Burbank, Antioch, Daly City, Temecul and all other areas of California. 463 0 obj << /Linearized 1 /O 465 /H [ 928 1116 ] /L 999132 /E 15929 /N 109 /T 989753 >> endobj xref 463 26 0000000016 00000 n Check the area to be protected to ensure that the required expansion joints are in place. 6 0 obj 3, METHOD B) (CY), ROCK SLOPE PROTECTION (NO. endobj Rock Slope Protection practice is intended for slopes too unstable for revegetation practices alone. Riprap can be used to stabilize slopes to prevent erosion and provide support. %PDF-1.3 % 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. The plans will designate which type applies at each location. Whether you're speeding down a slope or cycling uphill, the F5 can be worn in a number of ways to fit your training and needs. Values shown are based on Table 873.3A dimensions and an assumed specific gravity of 2.65. The concrete slope protection method consists of paving the embankment with portland cement concrete. 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.

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rock slope protection fabric class 8steve menzies family