GHnBc__'h1'u]SO0P+R&yGeJ$FP?cSp28 1}9AQ #T6Bc*)_vU"]T hY# RSP-fabric Type of geotextile and quality requirements per Section 96 Rock Slope Protection Fabric of the Standard Specifications. To respond to the different problems associated with instability of rock faces, Geofabrics also has a broad range of independently verified rockfall mitigation systems. "QamV(Z3VL> endobj 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. 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. 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. 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. Contact our sales team at 1-863-270-8118 to discuss your erosion control requirements. Be sure to consult your local project engineer or construction professional about the rock sizing and particular . At the start of gabion placement, require the contractor to verify the minimum unit weight of the gabions to ensure it meets specifications. 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. Center splash basin . Check the area to be protected to ensure that the required expansion joints are in place. The Maryland Department of the Environment (MDE)recentlyadopted the 2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control. stream If you have any questions about the consistency of the gabions, you may also order the unit weight to be verified during the course of the work. 0000005658 00000 n (You may enter part of the word or the whole phrase). 0000009704 00000 n B. Cables. Maximum slope 1.5:1 horiz:vert, (67% or 34) or flatter, and is limited to slopes < 30' of uninterrupted length. %PDF-1.3 % 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. Ensure existing shrubs and trees are protected so that they continue to anchor the surrounding soil. 1 0 obj Inspect the rock to ensure it has been cleaned of any adhering dirt and clay and is moistened before concrete placement. 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 Click on a heading to sort by that heading. US 160NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. 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. Contact your local TenCate Geosynthetic representative for the proper use and specification of these products. 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. 0000002313 00000 n ), Geocomposite Wall Drain (w/ 6oz on 1 or 2 sides - Please specify.). 0000015681 00000 n When slope paving with concrete pavers is specified, ensure the special provision requirements are met. Ensure that the contractor performs concrete finishing as specified and that the slope paving is cured by one of the specified methods. Erosion control devices provide direct protection to the soil surface therefore, are considered one the best measures for preventing erosion. Note any changes that may have occurred between the preliminary design studies and the start of construction. (a) Exception: US 250NW is 5 pounds short on "grab breaking load" for Sediment Filter Bags. 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 %PDF-1.4 % 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. | Conditions of Use | Privacy Policy 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. /Filter/FlateDecode 7 0 obj These products were developed to meet specific agency (DOTs, MTOs, etc.) Place a layer (six inch minimum) of 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. Smooth the graded foundation. Products with a are available to meet BABA (Build America, Buy America) requirements. BMP040 "rock slope protection (no fabric)" as applicable. %PDF-1.4 We're available on the following channels. 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 endobj Mirafi N-Series Product Description Sheet. <> endobj You may check the size of rock by roughly measuring the size and converting the volume to mass. The maximum height of the vertica l lower portions 3.5 feet. 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. This section provides guidelines for inspecting slope protection for work specified under Section 72, Slope Protection, of the Standard Specifications. 1800 Washington Blvd., Baltimore, MD 21230, Stormwater, Dam Safety, and Flood Management Home, Plan Review for State and Federal Projects. Values shown are based on Table 873.3A dimensions and an assumed specific gravity of 2.65. 0000009682 00000 n 3. RG12N Nonwoven Geotextile with a 300 lbs grab tensile strength and a flow rate of 65 gallons a minute per square foot. Ensure the equipment used during spreading does not crack the rock. HToL[U?Ayb:V;%Y48{RMLIlq&+J[mNN?J;A? IMPLEMENTATION OF ROCK SLOPE PROTECTION (RSP) DESIGN There are three material gra requirements based on required rock layer dation thicknesses. 0000002336 00000 n . Temporary structures shall be left in place until adequate vegetation and the permanent . 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 KEwAx{N*$J }COpU?s{bs. <> endobj For maximum effect, both components must be integrally planned prior to road construction. For details about concrete production, review Section 4-90, Concrete, of this manual. 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. Mirafi 140N is a lightweight non woven geotextile that meets AASHTO M288 Class 3 geotextiles for separation and subsurface drainage. 0000014254 00000 n 2, METHOD B) (CY) (ENGMET), ROCK SLOPE PROTECTION (NO. The devices include ground covers and channel liners such as: 1. Source: Caltran Highway Design Manual, Chapter 870 Ensure concrete is cured by one of the specified methods. 2 0 obj endobj 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
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