Block and gravel inlet Protection (Temporary) 6.52.1. What term describes the distribution of various particle sizes with the material? Upstream or down stream? SUMP DRAINS 7-3 7.3. 322 0 obj <>stream Length of run = 275 ft. (Pipe Diameter lift thickness) + (Fill above pipe lift thickness) (1 lift) = 1) (48 in. A review of the proper minimum/maximum height of cover for the specific type of pipe should be completed. Structure Materials C. Installation D. Inlets and Outlets 08030 INSPECTIONS AND TESTING. Specifications i. Trench excavation, backfill, and compaction; Section 02250. Milo Wade; 3 years ago ; Views: Transcription. Links may open in a new window. If you have questions, please provide us with the course title and number when e-mailing or calling. Construction loads often exceed design loads. If the inspection is conducted by video: The video camera must have fully articulated lenses (360 degree inspection). SECTION 33 41 00 REINFORCED CONCRETE PIPE. VDOT Soils and Aggregate Compaction 2016v1.0 Appendix B | 2 The values are often affected by varying percentages of large aggregate which consultants and contractors do not usually put into consideration. Contractor shall be responsible for all utility fees. A Review of The Use of Reclaimed Asphalt | PDF | Road Surface Conditions of Use Type of Inlet Protection, INSTALLATION GUIDE americanwick.com 800.242.WICK (9425) American Wick Drain SITEDRAIN prefabricated drainage products may be installed in a variety of civil construction applications including: retaining. 1100 SLIP-LINING SANITARY SEWERS 1100.1 DESCRIPTION: This item shall consist of slip-lining sanitary sewer pipe, which is accomplished by pulling or pushing liner pipe into existing sewers by. When moving concrete pipe you should pick it up by one end. Virginia Department of Transportation documents: Road and Bridge Specifications and appropriate supplemental specifications Virginia Test Methods Manual Road and Bridge Standards. SECTION 02612 NONREINFORCED CONCRETE SEWER PIPE, Division 2 Section 32 14 13.19 Section 02795. 295 0 obj <>/Filter/FlateDecode/ID[<8B56AE6A42E26944BC3979D310C9B904>]/Index[282 27]/Info 281 0 R/Length 72/Prev 509365/Root 283 0 R/Size 309/Type/XRef/W[1 2 1]>>stream The pipe should be stacked and chocked to avoid movement of the pipe. How heavy should the hammer be? Rock more than 2 inches in its greatest dimension shall not be placed within 12 inches of pipe. 6) Where can the typical underdrain drawings be found? ALL students must have a valid account on VDOT University. container, large spoon, and 1.1 lbs. In the top 5 feet; perform one test every other lift around the perimeter and continue to the top of the structure. If it is a routine entrance, or crossover pipe 12 to 30 in diameter, that is to be installed under fills 15 feet or less in height, no exploration is needed. Table of Contents 1. For larger diameter pipe, >30 inches, embedment materials should be worked under the haunches by hand. All cracks shall be digitally scanned to allow for accurate measurement. 4) Provide a minimum 0.5 to 1% longitudinal slope to enhance positive drainage. Bell and Spigot: A pipe with a flared bell has the outside diameter of the bell larger than the outside diameter of the pipe. PDF 02210 - TRENCHING, BACKFILLING AND COMPACTION OF UTILITIES - Lynchburg hb```f````2X@( [ $ Find the right form for you and fill it out: VisitingProfessorofLaw,StanfordLawSchool(W No results. 13) Use vibratory plate with a welded foot to compact the aggregate backfill. What is the moisture content at which soil can be compacted to its maximum dry density with the least amount of comparative effort called? Construction Materials Testing Soils - NICET The following drawing provides typical VDOT standards for pipe bedding and backfill. PDF a/o May 2018 MATERIALS CERTIFICATION SCHOOLS FREQUENTLY ASKED QUESTIONS 9) When can No. PDF Appendix D - Virginia Test Methods (REVISED) Care must be exercised to ensure placement and compaction of the embedment material in the haunches. When you learn and master soils inspection, your market value shoots up. 11) Pipe openings in precast drainage structures shall not exceed the outside cross sectional dimensions of the pipe by more than how much? The foundation is to be explored below the bottom of the excavation to determine the type and condition of the foundation. (Provide three) a) b) c) 2) Explain when a rock correction is utilized and what happens to the laboratory maximum dry density and optimum moisture values after a rock . This happens because large pores more effectively move water downward through . SECTION 02530 STORM DRAINAGE STRUCTURES. Natural ground slope, PIPE INSPECTION AND REPAIR. VDOT: Soils and Aggregate Compaction - Community College Workforce Alliance 2. ASTM D6938 Standard Test Methods for In-Place Density and Water Content Cracks shall be digitally scanned to allow for accurate measurement. 794 (d), please call 800-367-7623. True or false: A soil that contains a high percentage of fines is more affected by water that one with a low percentage of fines. What term refers to the texture and firmness of a soil? These underdrains are segmented systems with outlets spaced at 250 to 350 feet. Soil Compaction Handbook ff Soil Compaction Soil compaction is defined as the method of mechanically increasing the density of soil. CATCH BASINS 7-3 7.4. 15) What end of the pipe system do you start installation? (test every other 4 in. Dense graded aggregates are used in pavement to give the structure more strength. Some links may require the Adobe Reader. in the field: the soil moisture is near the liquid limit. 1. The specific locations are shown on the plans. Rigid pipe properly fitted, sealed with rubber, preformed plastic, mastic gaskets Flexible Pipe properly aligned and joined with approved coupling bands Joint Performance Terminology Soil Tight: A joint that is resistant to infiltration of particles larger than those retained on the No. 5) True or False. June 21st, 2018 - 2018 Soil Classification and Compaction Proficiency Samples 177 according to the AASHTO or the data sheet Shrinkage Factors of Soils by the . There are many types of compaction equipment available. Bierolson. Computation of U.S. Trenching should be completed in existing soils with sidewalls reasonably vertical to the top of the pipe. 3) What are the testing requirements for backfilling around pipe? Web Policy / Privacy Statement / WAI Compliance / Email Safety / Site Map, Click here to access guidelines for the VDOT Materials Certification Schools Program (Section 114, Manual of Instructions), ACI Concrete Field Testing Technician Certification Program Schedule, Nuclear Radiation Certifications can now be obtained online through third party vendors, Pavement Marking (only available as an online course), Asphalt Plant Level 1 - Physical demonstration of proficiency -scheduled byGermanna CC, Asphalt Plant Level 2 - Physical demonstration of proficiency - scheduled by Germanna CC, Asphalt Plant Mix Design - Physical demonstration of proficiency - scheduled by Germanna CC, Concrete Field - Current ACI must be submitted to, Soils and Aggregate Compaction - Physical demonstration of proficiency - scheduled by CCWA. = 15 lifts 5) 15 ifts 2 (one test every other lift) = 7.5, round up to 8 tests in the top 5 ft. of backfill 6) Total tests required = (Number of test below 5 ft.) + (Number of test above 5 ft.) 7) = 11 tests required (minimum) NOTE: Compaction Tests are required on stone backfill (Class I backfill and bedding material); consult the District Materials Division for Maximum Dry Density and Optimum Moisture Content targets for the specific material being used. - 2000, Related Features SPECIFICATIONS FOR PRECAST MODULAR BLOCK RETAINING WALL SYSTEM (revised 11/5/13), Stormwater/Wetland Pond Construction Inspection Checklist. The mandrel shall be pulled through the pipe or culvert by hand with a rope or cable. These guidelines are applicable to the locating, marking, SECTION 5 - STORM DRAINAGE 5.01 Design Storm drainage facilities shall be designed in accordance with the goals and guidelines set forth in the Unified Development Ordinance. The CCWA is hosting the following courses, which are available in a traditional (instructor-led) format or as a self-study option, allowing the students to challenge the Materials Certification exams: For more information on CCWA courses and registration click hereor contact CCWA at 804-523-2290 or 804-523-2292. Some links may require the Adobe Reader. PDF Section 4 - Construction and Inspections - Henrico County, Virginia The loosely placed center section of the bedding allows the pipe to seat itself and helps minimize point loads. The Soils and Aggregate Inspector Certification Course is designed for those individuals responsible for the sampling and testing of soils and aggregates used in base, subbase and roadway embankment construction. We will be looking into this with the utmost urgency, The requested file was not found on our document library. Some courses also require that the proficiency be demonstrated at a VDOT approved locations. Leak Resistant: A joint which limits water leakage at a maximum rate of 200 gallons/inch diameter/mile/day for the pipeline system for the project specified head or pressure. B. endstream endobj startxref Students must bring valid ID & attend class in order to test. City of Seattle Supplement to the Specification for Road, Bridge and Municipal Construction, most current addition. Design Criteria No stockpiling of excavation materials is allowed unless the Geotechnical Engineer, DEPARTMENT OF PUBLIC WORKS COUNTY OF HENRICO P.O. And the pipe must provide structure, because if the ground above the pipe collapses then the pipe can no longer perform as a conduit. PDF Appendix E Compaction Characteristics and Equipment %%EOF How far should the hammer fall?, What are the moisture and density content corresponding to the peak of the curve . ACI Concrete. Excavate Trench Proper trench widths will allow for proper compaction alongside the pipe. The moisture content at which a soil can be compacted to its maximum dry density with the least amount of comparative effort is called the optimum moisture content. protection. 200 sieve. 5.01 Design, PROJECT COST ESTIMATE ASSUMPTIONS AND EXCLUSIONS, SPECIFICATIONS FOR SEWER PIPE AND LINING INSERTION - TRENCHLESS; GENERAL GUIDELINES (As Provided by NASSCO), TECHNICAL NOTE Culvert Sliplining and Lining of Casings with HPPipe. 7) What is the maximum height of cover for a 48 inch pipe diameter Class IV concrete pipe culvert? All new construction involves a study and analysis of the on-site soils. There is a variety of pavement under/edge drains in the VDOT Road and Bridge Standards Volume 1 ( ) with each addressing a specific geometric condition and groundwater condition. This program will encompass nuclear density testing, one-point proctor and "Speedy" moisture, construction and testing of embankments and subgrade, pipe installation, roller patterns and reports. What is the minimum number of density tests that should be run on the backfill material? 309 0 obj <>/Filter/FlateDecode/ID[<8C7926BE3CE0893EFFE3D4D04181CA9C><5F163F4C9BEAEE4B999AF08BC3EDB7FD>]/Index[296 27]/Info 295 0 R/Length 74/Prev 443524/Root 297 0 R/Size 323/Type/XRef/W[1 2 1]>>stream These items shall conform to Section 31, "Storm Drain Installation," of these Standard Provisions. 2016v1.0 Chapter 4 4, 5 PRE CONSTRUCTION ISSUES Prior to construction the pipe delivered to the project should be inspected and verified to be the pipe specified for the project. Clearly the pipe needs to function as a conduit, as the whole idea of a pipe is to move liquid in a controlled manner and direction. SCOPE. Highway Plan Reading Guide. 4 in.) Backfill and compaction shall be advanced simultaneously on both sides of the pipe. Edit, 02150-1 of 6 SECTION 02150 REMOVAL OR ABANDONMENT OF EXISTING 02150.01 GENERAL A.
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