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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. 4 0 obj The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and courteous, timely and responsive, accurate and consistent, accessible and convenient, and truthful and transparent services. B. Cables. >> stream (One call ordering and delivery). /OPM 1 %PDF-1.3 % 0000000928 00000 n Protection involves constructing a heavy mass of smaller rocks bound together by concrete. TenCate develops and produces materials that function to increase performance, reduce costs and deliver measurable results by working with our customers to provide advanced solutions. Any springs or water courses that might affect the stability of the design. Slope protection is usually needed to protect the upstream slope against erosion due to wave action. The Standard Specifications provide two methods of placement for this type of protection: Method A and Method B. Close observation is required during rock placement to detect any damage to the fabric. 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. The plans indicate the minimum depths of foundations. %PDF-1.4 % Polypropylene is stable within a pH range of 2 to 13. 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. :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 application/pdf <> Slope protection structures are to be used where concentrated water will cause excessive erosion on existing and/or recent cut and fill slopes. Properly designed and planted vegetative covers play Click it again to reverse the order. Ensure the equipment used during spreading does not crack the rock. Be sure to consult your local project engineer or construction professional about the rock sizing and particular . 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. 3. (You may enter part of the word or the whole phrase). 0000004037 00000 n Riprap can be used to stabilize slopes to prevent erosion and provide support. 0000009682 00000 n Check the area to be protected to ensure that the required expansion joints are in place. with a minimum of 50% of the stones . Ensure concrete is cured by one of the specified methods. << 0000002313 00000 n The samples will be crushed in the laboratory to sizes needed to perform tests. To respond to the different problems associated with instability of rock faces, Geofabrics also has a broad range of independently verified rockfall mitigation systems. 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. 5 0 obj 0000009975 00000 n To ensure the success of Method A, ensure that the bearing of rocks from one to the other follows specifications and that the use of chinking rocks is limited to filling voids. More simply put, if it is made of fabric and buried in the ground it is probably a geotextile! 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 BMP040 "rock slope protection (no fabric)" as applicable. Technical Support available for assistance. Inspect the rock to ensure it has been cleaned of any adhering dirt and clay and is moistened before concrete placement. requirements. Contract Cost Data Project Details. You may be trying to access this site from a secured browser on the server. Click on the product name for a data sheet. +NXR!ft]l|\P2. This has been superseded by Caltrans New Riprap Classes. 3, METHOD B) (TON), STRUCTURE EXCAVATION (ROCK SLOPE PROTECTION) (ENGMET). Observe construction to ensure the contractor does the placing, finishing, and curing as specified. <>/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<>>> If excess concrete remains on the surface, the finished product, when used in streams, will be too smooth and, along the protection, velocities will increase beyond those intended during design. . Thishandbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. 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"). 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. Intermediate, or B dimension (i.e., width) where A dimension is length, and C dimension is thickness. When slope protection is paid by weight, refer to the discussion of weighing and metering procedures in Section 3-902E, Weighing Equipment and Procedures, of this manual. Place a highly permeable and appro-priately sized geotextile filter fabric on the prepared slope following the manufacturer's recommendations. Mirafi 160N is a lightweight nonwoven geotextile that meet AASHTO M288 Class 2 geotextiles for separation and subsurface drainage. Rock Slope Protection practice is intended for slopes too unstable for revegetation practices alone. Fabric Class Class Largest rock gradation class used in slope protection 8 Classes I-VIII 10 Classes IX-XI Replace the 1st paragraph of section 73-3.028 with: Rocks for concreted-rock slope protection must comply with the gradation shown in the following table: Concreted-Rock Gradation . Civil engineers and landscape architects need proven solutions to control soil erosion, stabilize slopes, enable drainage and create a visually pleasing landscape. 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 Weight will vary based on density of rock available for the project. Project Details For EA 04-0A0204 ITEM NUMBER 729011 ROCK SLOPE PROTECTION FABRIC (CLASS 8) Bid Opening Date (mm-dd-yyyy): 04-21-2021 District-County-Route-Postmile: 04-SON-1-R15./R15.7 Quantity: 220 SQYD Unit Price: $21.50 Total Price: Type of work: REALIGN ROADWAY The gabion method consists of placing wire mesh box-shaped baskets filled onsite with hard, durable rocks. Geotextiles have been in use for thousands of years dating back to the Egyptian Pharaohs. TAR_%R5Wa%*x4ux-x5d1c iU:v9b!KXGcFK 1fN2 t K! To provide the desired cleanliness, the contractor may need to sluice the rock or facing. Manufacturers information can be found at: 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. Consult engineer to ensure applicable design requirements are met. Temp. 0000008331 00000 n 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. Copies of these details are made available below in both Adobe Portable Document Format (PDF) and AUTOCAD Drawing (DWG) file formats. <>stream AASHTO is typical mass of 4.1 sy/oz. 99 (30% off) Best Selling Saucony Flat Mask By mrhzid $8. Rock grading and quality requirements per Standard Specifications. Contact Us Transportation Specifications Section 96-1.02I for Rock Slope Protection Fabric, Class 8, nonwoven geotextile. 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. Copies of these details are made available below in both Adobe Portable Document Format(PDF) and AUTOCAD Drawing (DWG) file formats. RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. State-furnished materials and expenses, as well as supplemental work items and descriptions. For details about concrete production, review Section 4-90, Concrete, of this manual. <>/Font<>>>/Fields[]>> Fabric used for rock slope protection, temporary construction roadways, separation, stabilization, reinforcement, drainage, and erosion control. Riprap is typically placed along graded ditch, channel, and shoreline banks over geotextile, which prevents erosional undercutting. 0000012187 00000 n Angular shaped rock may be used on any planned slope. To better control the contractors selection of rocks for placing, ensure the contractor paints tonnage on large rocks used in foundation construction. 0000000871 00000 n construction contract standards page. 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. 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. Proven Product Track Record (Aggregate is widely accepted and approved)Wilson Quarry Products are recognized as the Industry Standard in the Monterey Bay Area, Product meets and is Certified for Army Corp Projects. To compensate for the lack of flexibility in the completed structure, ensure an adequate foundation lies below this type of protection. If the slope is steeper than 2:1, do not use rounded boulders and cobbles. 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. 0000014231 00000 n 0000004014 00000 n Erosion control is an important element of successful slope protection. Refer to Section 4-96, Geosynthetics, of this manual for guidelines for inspecting and accepting rock slope protection fabric. Ensure that rocks of the specified sizes and shapes are being used. (a) Exception: US 250NW is 5 pounds short on "grab breaking load" for Sediment Filter Bags. There are three material gradation requirements based on required rock layer thicknesses. The Maryland Department of the Environment (MDE)recentlyadopted the 2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control. Please enable JavaScript in your browser. 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. (800) 518-2290, Providing the most comprehensive geosynthetic lines in the industry. rock slope protection fabric (class 8) 591200 rock stain: 780450 rock stain: 720110 small-rock slope protection: 192032 structure excavation (rock slope protection) (engmet) 6 0 obj For maximum effect, both components must be integrally planned prior to road construction. 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. Copyright Maryland.gov. 2005), although maintenance considerations may serve to reduce this maximum size. Testing must follow the frequencies shown in Section 6-1, Sample Types and Frequencies, of this manual. This translates to a 0.75H: 1V incline and is shown below. For RSP Classes IX thru XI, use Class 10 RSP-fabric. 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. These products can be used in areas where they meet the local agency requirements. RG12N Nonwoven Geotextile with a 300 lbs grab tensile strength and a flow rate of 65 gallons a minute per square foot. 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. All items. If necessary, order additional weep holes. RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. Benchmark inspection of sampling and testing of rocks. Other Names Rock Slope Protection. Vegetation (see . Draw Down Device, Sediment Basin Schematic - Vert. 2 0 obj Soil Stabilization Matting - Channel Application, Perm. A Shoreline Erosion Control project would likely require fabric in the 10oz to 16oz weight range. Without proper slope protection, a serious erosion problem known as "beaching" can develop on the upstream slope. 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. 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. Keep records up to date. 1, METHOD B) (TON), ROCK SLOPE PROTECTION (NO. engineering fabric pinned to the slope, or both a . Method B is not restrictive with respect to the placement of individual rocks. At the terminals of protection, ensure the contractor is particularly careful to avoid erosion and undercutting. 7 0 obj 6'' min. Need quick pricing on Erosion Control Fabric? 0000013346 00000 n The chart below lists US Fabrics' geosynthetics meeting CALTRANS specifications. 9 0 obj Click on the to send the number to the 0000015681 00000 n (For large riprap, consider a four inch layer of sand to protect the . 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. For Type R, F, or Common stone riprap, provide Type 2 filter fabric when shown on the plans. (b) Paving fabric specification requires a minimum mass of 4.1 sy/oz. This information is to be used only as a guide. @>|0fWp^,Y/T!*gprE."8hjjJ7kUfmYxTsX"CfU2TL]Gdb_Kg,GA/`U)H!hkJARD[R` uuid:30dd8676-a64b-4579-9ccf-fc82965d356f 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. Note any changes that may have occurred between the preliminary design studies and the start of construction. 8 0 obj the contract cost database using the most recent year of data. Ensure that the contractor places the fabric before placing the rock slope protection. Rock Channel Protection Paved Gutter 601.13 Basis of Payment 601.01 Description. Review the plans for the location and number of weep holes. These supersede the previous Caltrans Riprap Sizes. 2019-07-30T13:47:33-04:00 The finish surface must be roughened by brushing to expose rocks. 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 are available to meet BABA (Build America, Buy America) requirements. If you have any questions or would like to learn more, please contact us. 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. Nominal RSP class by median particle diameterb Nominal median Also, ensure the contractor does not drop rock into place; otherwise, cracking or breaking may occur. If the fabric is joined by stitched seams, stitch with contrasting colored yarn. 3 0 obj Review contractors verification of unit weight of rock-filled gabions. 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. Maximum slope 1.5:1 horiz:vert, (67% or 34) or flatter, and is limited to slopes < 30' of uninterrupted length. 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. /OP true > 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. Shop Lowe's for solutions to control erosion on slopes, as well. Refer to Section 4-96, Geosynthetics, of this manual for guidelines on inspecting and accepting rock slope protection fabric. NTPEP Datamine Information: RG80NC is a tracking model number for the following manufacturers products: Mirafi 180NC, SKAPS GE180/GT180C or Propex 861. 1 0 obj Mirafi 135N, 140NL and 140NC are lighter weight versions of Mirafi 140N . <>stream KEwAx{N*$J }COpU?s{bs. Resident engineers should be familiar with the material contained in Chapters 870, Bank ProtectionErosion Control, and 880, "Shore Protection," of the Highway Design Manual. You may check the size of rock by roughly measuring the size and converting the volume to mass. The method for placing rock will either be Method A or Method B, whichever the contract designates, as discussed under Section 4-7203A, Rock Slope Protection, earlier in this section. 0000012468 00000 n In 2007, the FAA approved construction of a new center field taxiway (Taxiway Mike) to alleviate airfield congestion. endobj Take care not to tear the filter fabric during installation. << <>/XObject<>/Properties<>>>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> %PDF-1.4 Neoloy Tough-Cells in slopes prevent erosion, enable drainage and stabilize the slope to provide a green surface cover. 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. Mirafi 180N is a moderate weight nonwoven geotextile that meets AASHTO M288 Class 1 geotextiles for separation and subsurface drainage. The contract will identify the designated method. Retaining Walls & Slope Stability FDM 10-10-3 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.. This article studies the mechanical properties and stability of CC slope protection by comparing it with conventional material (shotcrete). 2019-07-30T13:44:04-04:00 conforming to the requirements of 710-03 Vinyl Coated Steel Fence Fabric, Class A Wire Diameter, except color. Rock mesh slope protection is a technique to control rockfalls . When exposed aggregate slope paving is specified, ensure any concrete set retarders are used in accordance with manufacturer instructions. IMPLEMENTATION OF ROCK SLOPE PROTECTION (RSP) DESIGN <> We're available on the following channels. Review Section 4-90, Concrete, of this manual for details about concrete production. California Department of Transportation They blanket the soil, protecting it from wind and water forces. cIP=L ?L-o'OfE;9'WgIBdysw>vOo#g 8L3f*7Mnd*3cdLy&v~;6s8;)9Q"SE8a+3/>svm^}+7Ea8IG01nY5y7mxJ]X9sGjv][ppYdv r=0EVPTO(Xam -j9 WYY5:F"l9o&l:dyg^0GXoZgm[\H2#RrlXpZd`CAlwE.Sz.BuTiqT;E@m3I~`km&yeF 5. There are three material gra requirements based on required rock layer dation thicknesses. Mirafi 140N is a lightweight non woven geotextile that meets AASHTO M288 Class 3 geotextiles for separation and subsurface drainage. Rock riprap consists of loose rock that is dumped on the slope and distributed. =w (j($M/!bMbo,iDjQL1{L! Soil Stabilization Matting - Channel Application, Temp. These products were developed to meet specific agency (DOTs, MTOs, etc.) Barrier Landscape Edging & Paver Edging 6'/8. Roll size is 15'x300 Equivalent to Mirafi 1120NC or Skaps GT112 (Click here for spec) 0000007029 00000 n Erosion Control Blankets Wattles help slow water runoff and reduce soil erosion. For details about concrete production, review Section 4-90, Concrete, of this manual. main search page where you can specify additional parameters.