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9 Special Fill and Backfill - IN.gov
structure backfill and this material is required to backfill pipes or culverts within the contract limits, a change order is generated to establish a unit price. B borrow material placed outside the neat lines is paid for as borrow when such B borrow eliminates required borrow material. Otherwise, no
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Item 400 Excavation and Backfill for Structures
Backfill the excavation after placement of the permanent structure as soon as practical. Use backfill free from stones large enough to interfere with compaction; large or frozen lumps that will not break down readily under compaction; and wood or other extraneous material. Obtain backfill material from excavation or from other sources.
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(PDF) Soil Arching over Deeply Buried Thermoplastic Pipe
AASHTO method overp redicted the load on the pi pe by only 10%. However, for the cas es involving p ipes with hi gher S H values (i .e., HDPE pipes), the AASHTO m ethod overpredi cted
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Pipe
place and use backfill material that will produce a pipe-soil interaction system capable of withstanding the applied loads. Class I, II, or III soils may be used for backfill material, and should be compacted to at least 90% Standard Proctor Density or as otherwise specified by the engineer.
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1 SECTION 205 - EXCAVATION AND BACKFILL 2 FOR BRIDGE …
22 Structure Backfill Material 703.20 23 24 Cullet and Cullet-Made Materials 717 25 26 Structure backfill material shall include mixture of aggregate and cullet. 27 When cullet is not produced on the project island, or material unit price of cullet is 28 greater than material unit price of struct ure backfill, cullet may be excluded.
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211-R-XXX B BORROW AND STRUCTURE BACKFILL
211.03.1 Structure Backfill Types The structure backfill type shall be as specified. Within each of the following structure backfill types, the Contractor shall choose from the listed options for each type: (a) Type 1 1. structure backfill in accordance with 904.05 2. non-removable or removable flowable backfill in accordance with 213. (b) Type ...
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EMBANKMENT, BORROW, AND BACKFILL
1. Granular Backfill Borrow, Classification A-1. Refer to AASHTO M145. a. Well-graded material. b. Maximum aggregate size is 1½ inches for plastic pipe, 2 inches for all other pipes. 2. Flowable fill. Refer to Section 03575. a. Use only for drainage pipe backfill. B. Other materials or trench configurations for drainage pipe bedding and ...
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Standard Specifications
12/9/2013 7:18 AM. 2016 Standard Specifications for Roads and Bridges Manual. 4/19/2018 3:08 PM. 2016 Supplemental Specifications. 3/12/2018 3:00 PM. Historical Specifications.
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AASHTO Soil Classification System - AASHTO Chart
Besides Soil Classification on other criteria, the AASHTO Soil Classification System classifies soils into seven primary groups, named A-1 through A-7, based on their relative expected quality for road embankments, sub-grades, sub-bases, and bases.Some of the groups are in turn divided into subgroups, such as A-1-a and A-1-b.Furthermore, a Group Index may be calculated to quantify a …
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Mechanically Stabilized Earth Retaining Walls, Overlander ...
Reinforced backfill φ = 35° and 19.5 kN/m3 Reinforced backfill φ = 30° and 19.5 kN/m3 Reinforced backfill φ = 30° and 19.5 kN/m3 Seismic acceleration of 0.05g Max. applied bearing pressures of 250 kPa. Traffic surcharge of 12 kPa 3.5 Internal Design Within the MSE mass, stability is achieved using the
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COMPILATION OF APPROVED SPECIFICATIONS
STRUCTURE EXCAVATION AND BACKFILL • Replace the first paragraph of Subsection 203.02; Materials, with the following. 203.02 MATERIALS. Backfill materials as specified in the Contract Documents shall conform to the applicable requirements of SECTION M.01; BORROW AND AGGREGATES, of these Specifications.
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Modeling and characterization of mine pit backfilling ...
For instance, horizontal stress exerted by backfill material on excavated walls must be estimated accurately to avoid the failure of mine pillars (Gupta and Paul 2017). To reduce the susceptibility of the material to settlement, suitable compaction, optimum moisture content and maximum dry density are important when placing soils/tailings as ...
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2017 Standard Specifications
S T A N D A R D S P E C I F I C A T I O N S 2017 EDITION The Standard Specifications for road and bridge construction in Mississippi have been prepared, examined and recommended in …
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CONSTRUCTION SPECIFICATION FOR CONCRETE STRUCTURES
Proprietary patching materials shall be from the ministry's list of concrete patching materials. 904.05.07 Burlap The burlap shall be according to AASHTO M182, …
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Draft
backfill ( r) and wall face batter but ignoring wall-soil interface friction. The peak friction angle is deduced from conventional triaxial compression tests or direct shear box tests as recommended by AASHTO (2017). Load Model 2 (LM2) in this study is the Simplified …
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SPECIFICATIONS FOR SUPPLYING AND PLACING BACKFILL
All backfill material shall be in a thawed state when placing and compacting, and be free from rocks, large or frozen lumps, wood, or other unsuitable material. ... backfill shall not be placed against any concrete structure within a ... AASHTO T176 MRB-A215 …
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Reduced Zinc Loss Rate for Design of MSE Structures
AASHTO Specifications for Design of MSE Walls Presented to the AASHTO Subcommittee on Bridges and Structures Technical Committee T-15, Substructures and Retaining Walls May 22, 2006 Prepared by The Association for Metallically Stabilized Earth P.O. Box 9142, McLean, VA 22102-0142 (703) 749-3033
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Table 1 CLV Materials Testing and Sampling Frequencies ...
Structure Backfill. 208. Trench Excavation & Backfill 1 / 100 lf / Lift. 1 / 100 lf / Lift; ... Aggregate and Backfill Materials - Continued. 1 / 2000 Ton. Surface Tolerances. Per Special Provisions. 1 / 1000 yd. 3. ... AASHTO T27* & T11* Methylene Blue AASHTO TP57 Fine Agg Angularity AASHTO T304 Fractured Faces AASHTO
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Standard Specifications for Road and Bridge Construction
section 593. controlled low-strength material, backfill ..... 500 division 600. incidental construction drainage related items section 601. pipe drains, pipe underdrains, and french drains . 502 section 602. catch basin, manhole, inlet, drainage structure, and valve vault construction, adjustment, and
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Appendix A - Example 2 - Home | ADOT
in accordance with the AASHTO LRFD Bridge Design Specifications, 4 th Edition, 2007 and the 2008 Interim Revisions. ... Backfill Soil The soil used for backfill has the following properties: ... For an ordinary structure with conventional design and details and conventional levels of ductility, redundancy, and operational importance, it can ...
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432 MECHANICALLY STABILIZED EARTH (MSE W
material not considered to be gravel backfill, as defined herein. Recycled concrete shall not be permitted to be used as select backfill material. Select Backfill shall meet the following electrochemical limits: Property Standard Test Procedure Resistivity, Ω - cm Greater than 3,000 at saturation AASHTO T …
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AGGREGATES (FOR OAHU & MAUI)
(B) Structure Backfill Material B. When tested according to AASHTO T 176, the sand equivalent value of the backfill material shall be equal to or greater than the surrounding soil. Structure fill or backfill material placed behind bridge abutments, wingwalls and retaining walls shall be structure backfill material A.
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Section 812 Backfill Materials
Section 810—Roadway Materials B. Referenced Documents AASHTO T 27 GDT 4 GDT 6 GDT 7 GDT 67 812.2 Materials 812.2.01 Foundation Backfill, Type I A. Requirements 1. Use natural or artificial mixtures of materials consisting of hard, durable particles of sand or stone, mixed with silt, clay and/or humus material for Type I backfill. 2.
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Bridge Applications - Reinforced Earth
Typically* the select granular backfill material used in the mechanically stabilized earth structure shall be reasonably free from organic and otherwise deleterious materials, have a minimum shear strength of 34° and shall conform to the following gradation limits as determined by AASHTO T-27: Sieve Size Percent Passing 4 inches 100
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Table 1 CCPW Materials Testing and Sampling Frequencies ...
207 Structure Backfill 208 Trench Excavation & Backfill 1 / 100 lf / Lift 1 / 100 lf / Lift Sieve AASHTO T27 & T11 PI AASHTO T89 & T90 Solubility AWWA 4500E and 3500-NaD 1 / 1000 yd3 Compression Samples Per RTC 704.03.07 Field Density Due to Material Properties an Engineering Report Documenting Co mpactive Effort is Required (See Special ...
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1107 - AGGREGATES FOR BACKFILL SECTION 1107 …
1107 - AGGREGATES FOR BACKFILL 1100-22 b. MSE Walls: Precast Panel and Modular Block with Steel Soil Reinforcing Mesh or Steel Reinforcing Strips and Tie Strips. (1) Composition. Use granular backfill material in the structure volume of sand, sand-gravel, or crushed
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EXCAVATION AND BACKFILL FOR STRUCTURES
Where backfill material is being placed too close to the structure to permit compaction with blading and rolling equipment, use mechanical tamps and rammers to avoid damage to the structure. Avoid wedging action of backfill against structures. To prevent such action, …
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SECTION 15 BACKFILLING - mawss
each layer of material composing the backfill shall be not less than 95 percent of the relative maximum density as determined by the AASHTO Compacting Test T99. Each layer of backfill material which does not contain sufficient moisture to compact thoroughly shall be sprinkled and mixed with water as directed.
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DEPARTMENT OF TRANSPORTATION STATE OF GEORGIA …
For pre-approval submit soil classification test results and source location of material to the Office of Materials and Testing. If normal backfill material meeting required Class is not available, use graded aggregate material meeting Subsection 815.2.01. b. Fill heights above 10 ft (3 m), use graded aggregate material meeting Subsection 815.2.01.
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Indexchapter 3. Test Program and Results - Strength ...
Strength Characterization of Open-Graded Aggregates for Structural Backfills CHAPTER 3. TEST PROGRAM AND RESULTS 3.1 MATERIALS. In this study, 12 of the 19 AASHTO M43 gradations are tested and selected because of their common use in geotechnical applications as well as the limitations of the testing equipment available (table 4).
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