Flat or needle shaped rock must not be used unless the individual rock thickness is greater than 0.33 times the length. Place a layer (six inch minimum) of PsVPvCHWTxml4N,P>{Ur]JBV:V,iVkNm(C d3@p/J3O//.cji-+TA3 dsU)~Ds:mp7=h&X#0C]\:k`#+VW^`0 0=F5VvL(^f 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 . main search page where you can specify additional parameters. Ensure concrete is cured by one of the specified methods. If the fabric is joined by stitched seams, stitch with contrasting colored yarn. If there are no prevailing agency specifications, it is recommended to follow AASHTO M288 for subsurface drainage applications. 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. 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. 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. 0000002021 00000 n Decide whether modifications are necessary as a result of changed conditions. XYo[unHCih,(~ t@K{ y.EmvKhy?_\F6.nO?iV5FlD,#t~J7z@Al.z_ooA=H /$Q-Aav. . Method B is not restrictive with respect to the placement of individual rocks. This has been superseded by Caltrans New Riprap Classes. Review Section 4-90, Concrete, of this manual for details about concrete production. 9 0 obj 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. Contract Cost Data Project Details. endobj 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. Mirafi N-Series nonwovens combine high water flow rates, high soil interaction and durability while providing excellent soil particle retention. Mirafi 160N is a lightweight nonwoven geotextile that meet AASHTO M288 Class 2 geotextiles for separation and subsurface drainage. FDM 10-10-3 Without proper slope protection, a serious erosion problem known as "beaching" can develop on the upstream slope. Provide galvanized guide rail cables a minimum 19 mm in diameter, consisting . Protection involves constructing a heavy mass of smaller rocks bound together by concrete. 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. > Observe construction to ensure the contractor does the placing, finishing, and curing as specified. We're available on the following channels. Applicability Rock Slope Armor is applicable to: Slopes where unanticipated flows are encountered. 0000009704 00000 n 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. The contract plans will designate the required rock layer thickness for each location. 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. 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. RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. The Maryland Department of the Environment (MDE)recentlyadopted the 2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control. Copies of these details are made available below in both Adobe Portable Document Format(PDF) and AUTOCAD Drawing (DWG) file formats. Your search for great running gear starts and ends with us. RG12N Nonwoven Geotextile with a 300 lbs grab tensile strength and a flow rate of 65 gallons a minute per square foot. RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. More simply put, if it is made of fabric and buried in the ground it is probably a geotextile! The latest list of Item Codes is available from HQ Please enable scripts and reload this page. Cold storms bringing wind, rain and low-elevation snow heavy at times are forecast through early March. For details about concrete production, review Section 4-90, Concrete, of this manual. 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. endobj the contract cost database using the most recent year of data. The challenge was to construct a new taxiway over areas that were built on tidal flats and land reclaimed from Boston Harbor. AASHTO is typical mass of 4.1 sy/oz. conforming to the requirements of 710-03 Vinyl Coated Steel Fence Fabric, Class A Wire Diameter, except color. Review contractors verification of unit weight of rock-filled gabions. You may check the size of rock by roughly measuring the size and converting the volume to mass. Mirafi 135N, 140NL and 140NC are lighter weight versions of Mirafi 140N . The concrete slope protection method consists of paving the embankment with portland cement concrete. mum slope of two feet of horizontal distance for one foot of vertical rise. Retaining Walls & Slope Stability or call <>/XObject<>/Properties<>>>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> Smooth the graded foundation. 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. 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. "QamV(Z3VL> 0000008331 00000 n Soil Stabilization Matting - Channel Application, Perm. 4 0 obj /Filter/FlateDecode endobj Rock Slope Protection practice is intended for slopes too unstable for revegetation practices alone. Order corrective work when necessary. 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. 0000002044 00000 n This section provides guidelines for inspecting slope protection for work specified under Section 72, Slope Protection, of the Standard Specifications. Broken-concrete slope protection consists of placing broken concrete from job site locations identified within the contract. 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. 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. 7 0 obj construction contract standards page. A geotextile is typically defined as any permeable textile material used to increase soil stability, provide erosion control or aid in drainage. rock slope protection fabric (class 8) 591200 rock stain: 780450 rock stain: 720110 small-rock slope protection: 192032 structure excavation (rock slope protection) (engmet) 1 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) Temp. Geotextiles. Otherwise, placement could result in what is known as rockers or unstable rocks. endobj <>stream Fabric used for rock slope protection, temporary construction roadways, separation, stabilization, reinforcement, drainage, and erosion control. %PDF-1.3 % 0000014254 00000 n <> Contact Us 3. (a) Exception: US 250NW is 5 pounds short on "grab breaking load" for Sediment Filter Bags. (For large riprap, consider a four inch layer of sand to protect the . 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. Complete the Patio or Walkway 6. All items. /Length 5601 %PDF-1.4 % Observe closely during rock placement to detect any damage to the fabric. xZrFou D[&! 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. application/pdf 99 (30% off) Best Selling Saucony Flat Mask By mrhzid $8. In 2007, the FAA approved construction of a new center field taxiway (Taxiway Mike) to alleviate airfield congestion. Natural Resources & Energy Infrastructure, Energy - Power Generation - Renewables - Solar, Energy - Power Generation - Renewables - Wind. 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. Geofabrics offers a range of engineered slope, embankment and retaining wall solutions of use in transport infrastructure projects. 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. <> They blanket the soil, protecting it from wind and water forces. Slope protection structures are to be used where concentrated water will cause excessive erosion on existing and/or recent cut and fill slopes. 0000005681 00000 n Shop Lowe's for solutions to control erosion on slopes, as well. /OPM 1 10 0 obj Angular shaped rock may be used on any planned slope. Manufacturers information can be found at: in a MS Word document format from the 0000007029 00000 n To compensate for the lack of flexibility in the completed structure, ensure an adequate foundation lies below this type of protection. Keep records up to date. If you have any questions or would like to learn more, please contact us. Contact your local TenCate Geosynthetic representative for the proper use and specification of these products. 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 At TenCate ourgoal is your success. 1. To better control the contractors selection of rocks for placing, ensure the contractor paints tonnage on large rocks used in foundation construction. Products with a are available to meet BABA (Build America, Buy America) requirements. Transportation Specifications Section 96-1.02I for Rock Slope Protection Fabric, Class 8, nonwoven geotextile. Testing must follow the frequencies shown in Section 6-1, Sample Types and Frequencies, of this manual. 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. 2019-07-30T13:47:33-04:00 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. uuid:bc193511-b4f2-4d99-b47d-5ec173dc2f21 0000000871 00000 n KEwAx{N*$J }COpU?s{bs. 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. 0000008354 00000 n Rock Channel Protection Paved Gutter 601.13 Basis of Payment 601.01 Description. 3 0 obj You can also lay bags of sand along problem areas in your landscape to keep soil from washing away and to redirect water. Obtain rock samples for acceptance tests.

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