Place a highly permeable and appro-priately sized geotextile filter fabric on the prepared slope following the manufacturer's recommendations. The gabions are placed on filter fabric as detailed in the plans and specifications. Links to important documents and pages can be found below the chart. B. Cables. Order corrective work when necessary. Before placement of the broken concrete, inspect the material and be sure the reinforcement has been removed flush to the surface of concrete. US 160NW resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. 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. Angular shaped rock may be used on any planned slope. :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 Civil engineers and landscape architects need proven solutions to control soil erosion, stabilize slopes, enable drainage and create a visually pleasing landscape. . TAR_%R5Wa%*x4ux-x5d1c iU:v9b!KXGcFK 1fN2 t K! When specified, ensure coloring is added to the concrete. > Complete the Patio or Walkway 6. Ensure that the contractor performs concrete finishing as specified and that the slope paving is cured by one of the specified methods. You may be trying to access this site from a secured browser on the server. Shop Lowe's for solutions to control erosion on slopes, as well. The contractor must also ensure the construction of adequate returns and keys at the ends. stream %PDF-1.3 % 6'' min. or call 0000005681 00000 n Properly designed slope protection and stabilization has to include two components: a vegetational-biological and a mechanical-structural component. Without proper slope protection, a serious erosion problem known as "beaching" can develop on the upstream slope. Properly designed and planted vegetative covers play Smooth the graded foundation. 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 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 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. The devices include ground covers and channel liners such as: 1. Otherwise, placement could result in what is known as rockers or unstable rocks. Provide galvanized guide rail cables a minimum 19 mm in diameter, consisting . Copies of these details are made available below in both Adobe Portable Document Format(PDF) and AUTOCAD Drawing (DWG) file formats. (see Riprap Slope Protection Worksheet). 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. 0000000928 00000 n When shotcrete is to be used, review Section 4-53, Shotcrete, of this manual. The concrete slope protection method consists of paving the embankment with portland cement concrete. There are three material gra requirements based on required rock layer dation thicknesses. 0000004014 00000 n In making such a decision, observe the following: Take pictures to document existing conditions and verify that Form CEM-3101, Notice of Materials to Be Used, includes the materials for slope protection. Rock Channel Protection Paved Gutter 601.13 Basis of Payment 601.01 Description. Mirafi 180N is a moderate weight nonwoven geotextile that meets AASHTO M288 Class 1 geotextiles for separation and subsurface drainage. endobj << 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 requirements. AASHTO is typical mass of 4.1 sy/oz. Neoloy Tough-Cells in slopes prevent erosion, enable drainage and stabilize the slope to provide a green surface cover. The contract plans will designate the required rock layer thickness for each location. Ensure the equipment used during spreading does not crack the rock. Copyright 2023 TenCate Geosynthetics Americas. Technical Support available for assistance. (One call ordering and delivery). 3 0 obj Class 2 is the default Class for M288 applications. Method B is not restrictive with respect to the placement of individual rocks. /Length 5601 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. RG12N Nonwoven Geotextile with a 300 lbs grab tensile strength and a flow rate of 65 gallons a minute per square foot. A geotextile is typically defined as any permeable textile material used to increase soil stability, provide erosion control or aid in drainage. endobj 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) 0000012187 00000 n Placement of Bedding Material 1. Review contractors verification of unit weight of rock-filled gabions. Ensure that rocks of the specified sizes and shapes are being used. Geotextiles. construction contract standards page. Use all suitable material in the work. application/pdf Weight will vary based on density of rock available for the project. This handbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. 0000011079 00000 n Manufacturers information can be found at: Also, ensure the contractor does not drop rock into place; otherwise, cracking or breaking may occur. Standard contract items and descriptions for Caltrans projects. Mirafi N-Series nonwovens combine high water flow rates, high soil interaction and durability while providing excellent soil particle retention. 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. Method A is used where the stability of the rock slope protection is considerably dependent on the manner in which the individual rocks are placed. 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. Of the various types of instability problems, foundation failures are the most serious and most common. {s9y^ (You may enter part of the word or the whole phrase). 8 0 obj {.sAewh[w#Iv#W6f" $JOPf/W%%XKK&A~b ?nfY_iu"m]HDwP) Rp (a) Exception: US 250NW is 5 pounds short on "grab breaking load" for Sediment Filter Bags. ), Geocomposite Wall Drain (w/ 6oz on 1 or 2 sides - Please specify.). Click on the to search for an item in engineering fabric pinned to the slope, or both a . Testing must follow the frequencies shown in Section 6-1, Sample Types and Frequencies, of this manual. uuid:bc193511-b4f2-4d99-b47d-5ec173dc2f21 Lap 6'' min. If using geotextile fabric, place on the smoothed foundation, overlap the edges at least 12 inches and secure with anchor pins spaced every three feet along the overlap. This article studies the mechanical properties and stability of CC slope protection by comparing it with conventional material (shotcrete). endobj | Conditions of Use | Privacy Policy Rock mesh slope protection is a technique to control rockfalls . K@^9t% OZ$Mb Ne#^/_*Zw;*T_]k. The chart below lists US Fabrics' geosynthetics meeting CALTRANS specifications. Barrier Landscape Edging & Paver Edging 6'/8. 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. /Filter/FlateDecode 2. The equilibrium soil-to-geotextile system that allows for adequate movement of a liquidin the plane of the geotextile over the service lifetime of the application. =w (j($M/!bMbo,iDjQL1{L! YOU MUST NOTIFY US FABRICS BEFORE RECEIVING PRICING. The equilibrium soil-to-geotextile system that allows for adequate movement of a liquid across the plane of the geotextile with limited soil loss over the service lifetime of the application. 0000002021 00000 n Please enable scripts and reload this page. Applicability Rock Slope Armor is applicable to: Slopes where unanticipated flows are encountered. Need quick pricing on Erosion Control Fabric? 0000005658 00000 n When changes are made, maintain records of details, depths, heights, and other dimensions, and enter these on the as-built plans. 2, METHOD B) (CY) (ENGMET), ROCK SLOPE PROTECTION (NO. 0000007029 00000 n Intermediate, or B dimension (i.e., width) where A dimension is length, and C dimension is thickness. Temporary structures shall be left in place until adequate vegetation and the permanent . To better control the contractors selection of rocks for placing, ensure the contractor paints tonnage on large rocks used in foundation construction. For RSP Classes IX thru XI, use Class 10 RSP-fabric. 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. All rights reserved. This section provides guidelines for inspecting slope protection for work specified under Section 72, Slope Protection, of the Standard Specifications. At the start of gabion placement, require the contractor to verify the minimum unit weight of the gabions to ensure it meets specifications. 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. 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. xZrFou D[&! Mirafi N-Series Product Description Sheet. 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 Intermittent inspection of placement of slope protection, slope paving, and fabric operations. 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. In 2007, the FAA approved construction of a new center field taxiway (Taxiway Mike) to alleviate airfield congestion. the contract cost database using the most recent year of data. IMPLEMENTATION OF ROCK SLOPE PROTECTION (RSP) DESIGN AASHTO is typical mass of 4.1 sy/oz.. Verify the types of measurements and records necessary to support payment for the work. (b) Paving fabric specification requires a minimum mass of 4.1 sy/oz. 5. endobj Ensure the timber spacers are of the required material and spaced as planned. com routes make excellent running trails for serious runners and casual joggers, alike. - Shoreline Protection with EcoTubes&trade; CALTRANS does not have an APL/QPL for fabrics. These products can be used in areas where they meet the local agency requirements. Flat or needle shaped rock must not be used unless the individual rock thickness is greater than 0.33 times the length. 9 0 obj <>stream Riprap is typically placed along graded ditch, channel, and shoreline banks over geotextile, which prevents erosional undercutting. KEwAx{N*$J }COpU?s{bs. Review Section 4-90, Concrete, of this manual for details about concrete production. Cold storms bringing wind, rain and low-elevation snow heavy at times are forecast through early March. The plans will designate which type applies at each location. Your search for great running gear starts and ends with us. 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.