PsVPvCHWTxml4N,P>{Ur]JBV:V,iVkNm(C d3@p/J3O//.cji-+TA3 dsU)~Ds:mp7=h&X#0C]\:k`#+VW^`0 0=F5VvL(^f 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. The contract plans will designate the required rock layer thickness for each location. On a cut slope, this could be due to . Click it again to reverse the order. 0000012468 00000 n endobj You may be trying to access this site from a secured browser on the server. AASHTO is typical mass of 4.1 sy/oz.. 2, METHOD B) (CY) (ENGMET), ROCK SLOPE PROTECTION (NO. . "QamV(Z3VL> Any springs or water courses that might affect the stability of the design. Test panels may be specified in the special provisions. Mirafi 140N is a lightweight non woven geotextile that meets AASHTO M288 Class 3 geotextiles for separation and subsurface drainage. Slope protection structures are to be used where concentrated water will cause excessive erosion on existing and/or recent cut and fill slopes. If the slope is steeper than 2:1, do not use rounded boulders and cobbles. 0000015681 00000 n At TenCate ourgoal is your success. When shotcrete is to be used, review Section 4-53, Shotcrete, of this manual. 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. 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. 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. endobj Testing must follow the frequencies shown in Section 6-1, Sample Types and Frequencies, of this manual. 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. Click on a heading to sort by that heading. 1. Rock riprap consists of loose rock that is dumped on the slope and distributed. NTPEP Datamine Information: RG80NC is a tracking model number for the following manufacturers products: Mirafi 180NC, SKAPS GE180/GT180C or Propex 861. (One call ordering and delivery). This translates to a 0.75H: 1V incline and is shown below. When exposed aggregate slope paving is specified, ensure any concrete set retarders are used in accordance with manufacturer instructions. 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. endobj Our TerraTex brand offers full-spectrum performance delivery - groundwater filtration and drainage, soil separation and reinforcement, geomembrane protection, sprayed liner substrate, oil-and-gas industry drilling pad and access-road enhancement, as well as pavement overlay and bond-breaker applications. ), Geocomposite Wall Drain (w/ 6oz on 1 or 2 sides - Please specify.). (b) Paving fabric specification requires a minimum mass of 4.1 sy/oz. At the terminals of protection, ensure the contractor is particularly careful to avoid erosion and undercutting. Refer to Section 4-96, Geosynthetics, of this manual for guidelines for inspecting and accepting rock slope protection fabric. 0000014231 00000 n 0000008354 00000 n Contact Us <>/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<>>> US 160NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. This information is to be used only as a guide. Ensure the timber spacers are of the required material and spaced as planned. B. Cables. 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. 99 (30% off) Best Selling Saucony Flat Mask By mrhzid $8. Obtain rock samples for acceptance tests. :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 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. /OPM 1 BMP040 "rock slope protection (no fabric)" as applicable. uuid:30dd8676-a64b-4579-9ccf-fc82965d356f 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. Smooth the graded foundation. Contact your local TenCate Geosynthetic representative for the proper use and specification of these products. The color shall be black unless otherwise specified in the contract documents. 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 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. Resident engineers should be familiar with the material contained in Chapters 870, Bank ProtectionErosion Control, and 880, "Shore Protection," of the Highway Design Manual. 0000000928 00000 n AASHTO is typical mass of 4.1 sy/oz. Rock grading and quality requirements per Standard Specifications. These supersede the previous Caltrans Riprap Sizes. application/pdf The finish surface must be roughened by brushing to expose rocks. 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 Place a layer (six inch minimum) of /OP true You can also lay bags of sand along problem areas in your landscape to keep soil from washing away and to redirect water. 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. A geotextile is typically defined as any permeable textile material used to increase soil stability, provide erosion control or aid in drainage. More simply put, if it is made of fabric and buried in the ground it is probably a geotextile! Ensure that rocks of the specified sizes and shapes are being used. Decide whether an adequate number has been provided for the particular installation. 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. Close observation is required during rock placement to detect any damage to the fabric. 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. RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. Thishandbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. xZrFou D[&! Transportation Specifications Section 96-1.02I for Rock Slope Protection Fabric, Class 8, nonwoven geotextile. Geofabrics offers a range of engineered slope, embankment and retaining wall solutions of use in transport infrastructure projects. Applicability Rock Slope Armor is applicable to: Slopes where unanticipated flows are encountered. The Standard Specifications provide two methods of placement for this type of protection: Method A and Method B. RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. In 2007, the FAA approved construction of a new center field taxiway (Taxiway Mike) to alleviate airfield congestion. 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. 0000002021 00000 n 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) There are three material gradation requirements based on required rock layer thicknesses. Broken-concrete slope protection consists of placing broken concrete from job site locations identified within the contract. Slope Protection consists of rock, concrete, or concreted rock or slope paving ROCK SLOPE PROTECTION ROCK SHOULD DEMONSTRATE Stability: Angular shapes may be used on any planed slope Durability: Resist degradation and have a durability of 52 minimum (Caltrans) Consistency: Product is the same load after load. Riprap is typically placed along graded ditch, channel, and shoreline banks over geotextile, which prevents erosional undercutting. To provide the desired cleanliness, the contractor may need to sluice the rock or facing. The Maryland Department of the Environment (MDE)recentlyadopted the 2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control. 0000014254 00000 n 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. Placement of Bedding Material 1. endobj 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. | Conditions of Use | Privacy Policy %PDF-1.4 % There are three material gra requirements based on required rock layer dation thicknesses. Be sure to consult your local project engineer or construction professional about the rock sizing and particular . 0000005681 00000 n 3, METHOD B) (CY), ROCK SLOPE PROTECTION (NO. 2005), although maintenance considerations may serve to reduce this maximum size. 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. endobj 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. 0000002313 00000 n Contact our sales team at 1-863-270-8118 to discuss your erosion control requirements. 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 contract cost database using the most recent year of data. Take care not to tear the filter fabric during installation. A Shoreline Erosion Control project would likely require fabric in the 10oz to 16oz weight range. Click on the product name for a data sheet. >> Ensure that the contractor places the fabric before placing the rock slope protection. These products can be used in areas where they meet the local agency requirements. Keep records up to date. For Type R, F, or Common stone riprap, provide Type 2 filter fabric when shown on the plans. This article studies the mechanical properties and stability of CC slope protection by comparing it with conventional material (shotcrete). Products with a are available to meet BABA (Build America, Buy America) requirements. <> For details about concrete production, review Section 4-90, Concrete, of this manual. {s9y^ 3, METHOD B) (TON), STRUCTURE EXCAVATION (ROCK SLOPE PROTECTION) (ENGMET).