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- 45-1.01 GENERAL Section 45 includes general specifications for constructing structures. 45-1.02 MATERIALS
- 46-1.01A Summary Section 46-1 includes general specifications for constructing ground anchors and soil nails. 46-1.01B Definitions
- 46-1.01C(2)(b) Ground Anchor Shop Drawings
- 46-1.01C(2)(c) Soil Nail Shop Drawings
- 46-1.01D Quality Assurance
- 46-1.01D(2)(b)(ii) Jacking Equipment and Calibration
- 46-1.01D(2)(b)(iii) Measuring Movements
- 46-1.01D(3) Department Acceptance
42-3.04 PAYMENTGrinding an existing approach slab and the adjacent 50 feet of approach pavement is paid for as grind existing bridge deck. 42-4–42-9 RESERVED 43–44 RESERVED DIVISION VI STRUCTURES 45 GENERAL 45-1 GENERAL 45-1.01 GENERALSection 45 includes general specifications for constructing structures. 45-1.02 MATERIALSNot Used 45-1.03 CONSTRUCTIONNot Used 45-1.04 PAYMENTNot Used 45-2–45-10 RESERVED 46 GROUND ANCHORS AND SOIL NAILS 46-1 GENERAL 46-1.01 GENERAL46-1.01A SummarySection 46-1 includes general specifications for constructing ground anchors and soil nails. 46-1.01B DefinitionsNot Used 46-1.01C Submittals46-1.01C(1) GeneralSubmit a certified calibration chart for each jack and its gauge as an informational submittal. 46-1.01C(2) Shop Drawings46-1.01C(2)(a) GeneralSubmit 5 copies of shop drawings to OSD, Documents Unit. Notify the Engineer of the submittal. Include in the notification the date and contents of the submittal. Allow 30 days for the Department's review. After review, submit from 6 to 12 copies, as requested, for authorization and use during construction. Shop drawings and calculations must be sealed and signed by an engineer who is registered as a civil engineer in the State. Shop drawings for ground anchors and soil nails must include: 1. Your name, address, and telephone and fax numbers. 2. Construction schedule and sequence of installing and grouting. 3. Encapsulation details. 4. Repair procedure for damaged sheathing. 5. Drilling methods and equipment, including: 5.1. Drilled hole diameter. 5.2. Equipment space requirements. 6. Grout mix design and testing procedures. 7. Grout placement equipment and procedures, including minimum required cure time. 8. Details for providing the bonded and unbonded length. If packers or other similar devices are to be used, include the type. 9. Testing equipment, including: 9.1. Jacking frame and appurtenant bracing. 9.2. Method and equipment for measuring movement during testing. 46-1.01C(2)(b) Ground Anchor Shop DrawingsGround anchor shop drawings must include the following additional information: 1. Details and specifications for the anchorage system and ground anchors. 2. Details for the transition between the corrugated plastic sheathing and the anchorage assembly. 3. If shims are used during lock-off, shim thickness and supporting calculations. 4. Calculations for determining the bonded length. Do not rely on any capacity from the grout-to-ground bond within the unbonded length.
1. Details and specifications for: 1.1. Anchorage system 1.2. Production soil nails 1.3. Test soil nails 2. Drilling methods and equipment, including: 2.1. Supporting calculations 2.2. Assumed bond strength 3. Details for isolating installed proof test soil nails during shotcrete application 4. Procedure for extracting grouted soil nails 46-1.01C(3) Test DataSubmit the following data for each ground anchor or soil nail test: 2. Test loading equipment 3. Anchor or nail location 4. Time and date of: 4.1. Drilling 4.2. Installation 4.3. Grouting 4.4. Testing 5. Hole diameter and depth 6. Drilling method 7. Soil or rock classification and description 8. Bonded and unbonded length 9. Quantity of groundwater encountered within the bonded length 10. Grout quantity and pressure used within the bonded length 11. Anchor end or nail head movement at each load increment or at each time increment during the load hold period Submit the test data when ground anchor or soil nail testing is complete or when requested. 46-1.01D Quality Assurance46-1.01D(1) GeneralNot Used 46-1.01D(2) Quality Control46-1.01D(2)(a) GeneralStability testing and wall zones must comply with section 19-3. 46-1.01D(2)(b) Load Testing46-1.01D(2)(b)(i) GeneralThe jacking equipment and the movement measuring system must be stable during all phases of loading. Do not unload or reposition the test equipment during load testing. 46-1.01D(2)(b)(ii) Jacking Equipment and CalibrationApply the test loads using a hydraulic jack supported by a reaction frame that can support the test equipment without excessive deformation. Use a calibrated pressure gauge or a load cell to determine the magnitude of applied test loads. The pressure gauge must have an accurately reading, clearly visible dial or display. Dial gauges must be graduated in 100 psi increments or less. Each jack and its gauge must be calibrated as a unit under the specifications for jacks used to tension prestressing steel permanently anchored at 25 percent or more of its specified minimum ultimate tensile strength in section 50-1.01D(2)(b). The load cell must be calibrated and have an indicator capable of measuring the maximum test load. The load cell range must be such that the lower 10 percent of the manufacturer's rated capacity is not used in determining the jacking force.
46-1.01D(2)(b)(iv) ProcedureAt each load increment, including the ending alignment load, measure the movement at the anchor end or nail head relative to an independent, fixed reference point. Record the movements to the nearest 0.001 inch. Maintain each test load within 5 percent of the specified load throughout each hold period. 46-1.01D(3) Department AcceptanceThe Department may verify the test loads using the Department's load cells. If requested, install and support the Department's testing equipment during testing and remove the equipment after testing is complete. Directory: esc esc -> Biblical Eschatology Presentation by: D. Paul Beck May 4, 2016 Ground Rules esc -> Mikael Håfstrӧm Screenplay by Miles Chapman and Arnell Jesko esc -> Escort affinity Program for Audi Club Members esc -> Preliminary entry form pistol esc -> Application form esc -> Request from Asian and Pacific Training Centre for Information and esc -> Constitution of the engineering student council university of maryland esc -> Subdisciplines of Earth Science Geology; study of the earth Download 6.74 Mb. Share with your friends:
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