rock slope protection fabric class 8
Placement of Bedding Material 1. engineering fabric pinned to the slope, or both a . Erosion Control Fabrics featured here have been used in a wide range of applications including slope stabilization, sediment containment, runoff filtration, home protection, and vegetative regrowth. Vegetation (see . US 160NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. 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 0000000871 00000 n Cold storms bringing wind, rain and low-elevation snow heavy at times are forecast through early March. <>/Font<>>>/Fields[]>> Stable rock sizes and flow depths for riprap-lined channels having gradients between 2 percent and 40 percent may Inspect the rock to ensure it has been cleaned of any adhering dirt and clay and is moistened before concrete placement. Lap 6'' min. Ensure the equipment used during spreading does not crack the rock. 3 0 obj 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. GHnBc__'h1'u]SO0P+R&yGeJ$FP?cSp28 1}9AQ #T6Bc*)_vU"]T hY# Observe construction to ensure the contractor does the placing, finishing, and curing as specified. 0000005681 00000 n Source: Caltran Highway Design Manual, Chapter 870 "QamV(Z3VL> This handbook includes new and revised details for the various practices that are used in the development of erosion and sediment control plans. 0000014254 00000 n The color shall be black unless otherwise specified in the contract documents. 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. Place a layer (six inch minimum) of 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. <> 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 details about concrete production, review Section 4-90, Concrete, 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. These supersede the previous Caltrans Riprap Sizes. 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. 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. Products with a are available to meet BABA (Build America, Buy America) requirements. 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 cost database using the most recent year of data. Without proper slope protection, a serious erosion problem known as "beaching" can develop on the upstream slope. Mirafi 1100N, 1120N and 1160N are heavy weight nonwoven geotextiles for more severe or extremely harsh conditions, such as rip-rap and revetment applications. Obtain rock samples for acceptance tests. 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. Slope protection structures are to be used where concentrated water will cause excessive erosion on existing and/or recent cut and fill slopes. 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 The contract will identify the designated method. Mirafi N-Series Product Description Sheet. . Rock riprap consists of loose rock that is dumped on the slope and distributed. 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. 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. construction contract standards page. To compensate for the lack of flexibility in the completed structure, ensure an adequate foundation lies below this type of protection. EZw5'dr=`j+2\8:U.|V,%)~h/X8ps requirements. The latest list of Item Codes is available from HQ This information is to be used only as a guide. The samples will be crushed in the laboratory to sizes needed to perform tests. <> Rock Slope Protection practice is intended for slopes too unstable for revegetation practices alone. This translates to a 0.75H: 1V incline and is shown below. endobj B. Cables. 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) Contract Cost Data Project Details. 0000013368 00000 n 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. Refer to Section 6-202, Responsibilities for Acceptance of Manufactured or Fabricated Materials and Products, of this manual for additional information. 10 0 obj 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 uuid:30dd8676-a64b-4579-9ccf-fc82965d356f For RSP Classes IX thru XI, use Class 10 RSP-fabric. Other Names Rock Slope Protection. Ensure that rocks of the specified sizes and shapes are being used. /OP true Flat or needle shaped rock must not be used unless the individual rock thickness is greater than 0.33 times the length. >> application/pdf Decide whether an adequate number has been provided for the particular installation. Mirafi 135N, 140NL and 140NC are lighter weight versions of Mirafi 140N . 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. There are three material gradation requirements based on required rock layer thicknesses. You may be trying to access this site from a secured browser on the server. Applicability Rock Slope Armor is applicable to: Slopes where unanticipated flows are encountered. Riprap is typically placed along graded ditch, channel, and shoreline banks over geotextile, which prevents erosional undercutting. endobj <>/XObject<>/Properties<>>>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> << Click it again to reverse the order. California Department of Transportation (For large riprap, consider a four inch layer of sand to protect the . FDM 10-10-3 Enter the item description of the code you wish to search for: Protection involves constructing a heavy mass of smaller rocks bound together by concrete. endobj 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. 0000000928 00000 n Angular shaped rock may be used on any planned slope. More simply put, if it is made of fabric and buried in the ground it is probably a geotextile! 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. endobj Rock grading and quality requirements per Standard Specifications. Barrier Landscape Edging & Paver Edging 6'/8. The contractor must also ensure the construction of adequate returns and keys at the ends. /Length 5601 3, METHOD B) (TON), STRUCTURE EXCAVATION (ROCK SLOPE PROTECTION) (ENGMET). HToL[U?Ayb:V;%Y48{RMLIlq&+J[mNN?J;A? Any springs or water courses that might affect the stability of the design. JavaScript is required to use content on this page. 0000004014 00000 n 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. {s9y^ Refer to Section 4-96, Geosynthetics, of this manual for guidelines for inspecting and accepting rock slope protection fabric. The finish surface must be roughened by brushing to expose rocks. 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. 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. When changes are made, maintain records of details, depths, heights, and other dimensions, and enter these on the as-built plans. Erosion Control Blankets Wattles help slow water runoff and reduce soil erosion. Temporary structures shall be left in place until adequate vegetation and the permanent . rock slope protection fabric (class 8) 591200 rock stain: 780450 rock stain: 720110 small-rock slope protection: 192032 structure excavation (rock slope protection) (engmet) At the terminals of protection, ensure the contractor is particularly careful to avoid erosion and undercutting. The chart below lists US Fabrics' geosynthetics meeting CALTRANS specifications. >> 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. Information reported to the hotline in the past has helped to eliminate certain fraudulent activities and protect State resources. The plans will designate which type applies at each location. 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. 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. Check to ensure that slopes and foundation areas are graded and compacted to specified tolerances. 0000002313 00000 n The Maryland Department of the Environment (MDE)recentlyadopted the 2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control. Nominal RSP class by median particle diameterb Nominal median PsVPvCHWTxml4N,P>{Ur]JBV:V,iVkNm(C d3@p/J3O//.cji-+TA3 dsU)~Ds:mp7=h&X#0C]\:k`#+VW^`0 0=F5VvL(^f <>stream The Standard Specifications provide two methods of placement for this type of protection: Method A and Method B. (a) Exception: US 250NW is 5 pounds short on "grab breaking load" for Sediment Filter Bags. Values shown are based on Table 873.3A dimensions and an assumed specific gravity of 2.65. There are three material gradation requirements based on required rock layer thicknesses. Review Section 4-90, Concrete, of this manual for details about concrete production. Geotextiles. Click on the product name for a data sheet. Be sure to consult your local project engineer or construction professional about the rock sizing and particular . Keep records up to date. The gabions are placed on filter fabric as detailed in the plans and specifications. Obtain initial samples and have them tested for the specified attributes. Smooth the graded foundation. They blanket the soil, protecting it from wind and water forces. Your search for great running gear starts and ends with us. Geofabrics offers a range of engineered slope, embankment and retaining wall solutions of use in transport infrastructure projects. % We're available on the following channels. Geotextiles have been in use for thousands of years dating back to the Egyptian Pharaohs. If the slope is steeper than 2:1, do not use rounded boulders and cobbles. Please enable scripts and reload this page. To provide the desired cleanliness, the contractor may need to sluice the rock or facing. 4-7203C Small-Rock Slope Protection 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. Consult engineer to ensure applicable design requirements are met. If necessary, order additional weep holes. Transportation Specifications Section 96-1.02I for Rock Slope Protection Fabric, Class 8, nonwoven geotextile. Intermediate, or B dimension (i.e., width) where A dimension is length, and C dimension is thickness. > BMP040 "rock slope protection (no fabric)" as applicable. conforming to the requirements of 710-03 Vinyl Coated Steel Fence Fabric, Class A Wire Diameter, except color. 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. This work consists of protecting slopes, channels, and gutters with riprap, interlock precast concrete blocks, concrete, grouted items, tied concrete block mats, crushed aggregate, or rock items. 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 0000002044 00000 n 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. Draw Down Device, Sediment Basin Schematic - Vert. Observe closely during rock placement to detect any damage to the fabric. 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. endobj 0000009682 00000 n 0000014231 00000 n State-furnished materials and expenses, as well as supplemental work items and descriptions. 0000005658 00000 n At the start of gabion placement, require the contractor to verify the minimum unit weight of the gabions to ensure it meets specifications. AASHTO is typical mass of 4.1 sy/oz.. Technical Support available for assistance. Use the size and composition of yarn that is recommended by the fabric manufacturer. 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. Angular shaped rock may be used on any planned slope. Properly designed and planted vegetative covers play The contract plans will designate the required rock layer thickness for each location. A Shoreline Erosion Control project would likely require fabric in the 10oz to 16oz weight range. 7 0 obj Erosion control devices provide direct protection to the soil surface therefore, are considered one the best measures for preventing erosion. 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. 2 0 obj 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. Soil Stabilization Matting - Channel Application, Perm. (b) Paving fabric specification requires a minimum mass of 4.1 sy/oz. 0000012468 00000 n Copies of these details are made available below in both Adobe Portable Document Format(PDF) and AUTOCAD Drawing (DWG) file formats. Review contractors verification of unit weight of rock-filled gabions. 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. For measurement and payment, do the following: Chapter 1 - Caltrans Construction Organization, CalOES: Power Outage and Fire Recovery Resources. In 2007, the FAA approved construction of a new center field taxiway (Taxiway Mike) to alleviate airfield congestion. rock slope protection (3/8 t, class vi, method b) (ton) 723060 rock slope protection (300 lb, class iv, method b) (cy) . Broken-concrete slope protection consists of placing broken concrete from job site locations identified within the contract. 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. Place a highly permeable and appro-priately sized geotextile filter fabric on the prepared slope following the manufacturer's recommendations. 9 0 obj When shotcrete is to be used, review Section 4-53, Shotcrete, of this manual. 2. Temp. US 160NW resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Ensure that the contractor performs concrete finishing as specified and that the slope paving is cured by one of the specified methods. IMPLEMENTATION OF ROCK SLOPE PROTECTION (RSP) DESIGN A geotextile is typically defined as any permeable textile material used to increase soil stability, provide erosion control or aid in drainage. When rock slope protection fabric is required for either method, ensure the contractor places the fabric before placing the rock slope protection. are available to meet BABA (Build America, Buy America) requirements. Order corrective work when necessary. 0000002021 00000 n 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. endobj 1, METHOD B) (TON), ROCK SLOPE PROTECTION (NO. Review the plans for the location and number of weep holes. Ensure the timber spacers are of the required material and spaced as planned. There are three material gra requirements based on required rock layer dation thicknesses. Riprap can be used to stabilize slopes to prevent erosion and provide support. 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. Start by choosing whether your patio is a **single rectangle** or if it has a different shape, in which case you. Mirafi 180N is a moderate weight nonwoven geotextile that meets AASHTO M288 Class 1 geotextiles for separation and subsurface drainage. 2019-07-30T13:44:04-04:00 %PDF-1.4 % On a cut slope, this could be due to . If the rock contains an excess of fines or inadequate voids, the desired results may be impossible to obtain. Complete the Patio or Walkway 6. You may check the size of rock by roughly measuring the size and converting the volume to mass. 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.
