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Trench backfill lifts

WebJul 13, 2015 · The following frequenciesshall apply:Sand Bedding - Tests shall be made at a minimum of one test per lift per800 lineal feet of trench.TYPE II Backfill - Tests shall be made at a minimum of one test perlift per 500 lineal feet of trench.6.1.3 Tests will be reported by specific location: Example: T-pad 1: sandbedding test @ 3' from finish … WebPlacement of structure backfill material is required to be in 6 in. loose lifts and compacted with mechanical compactors to the required density. When compacting structure backfill, the material is required to be at optimum moisture content to obtain the required density. Flowable mortar is required to be uniformly placed up to the fill line as

02210 - TRENCHING, BACKFILLING AND COMPACTION OF UTILITIES

WebTrench Calculator. The Trench Calculator allows you to quickly calculate trench, pipe, and bedding values. You can perform pipe-related take-off by defining the details of the trench (e.g., length, depth, width, hinge elevation, backslope, and swell factor), the pipe (diameter, elevation, and waste factor), and up to four beddings. WebTest each lift to a minimum depth of 5.0 feet from the surface on sewer main and sewer service connections. Test each lift of fill on water main, water service ... Placing Trench Backfill and earthwork is subject to continuous inspection by WSSC. a. Allow time for WSSC to perform tests after completion of each layer of fill in east atlanta neighborhood association https://tambortiz.com

13 Pipe and Structure Backfill - Indiana

Web• Lift (CL: 6.1) • Excavation up to 1.5 m depth below ground level and depositing excavated material on the ground shall be included in the item of earthwork for various kinds of soil. • The extra lift shall be measured in a unit of 1.5 m or part thereof. WebAug 29, 2024 · The final step of installing RCP is to add backfill material and compact it thoroughly. The backfill material is placed evenly in lifts on both sides of the pipe until the trench is filled about one foot above the top of the pipe. It is important that the material is not be bulldozed into the trench or dropped directly onto the pipe. Webportions of any lifts in excess of specification requirements shall be removed and the lift recompacted. Backfill material shall be brought up evenly on both sides of the conduit for its full length in accordance with Specification Subsection 701.08. Pipe backfill using flowable fill will be in accordance with Specification Section 710 and cu anschutz biostatistics ms

Structure Backfill Design Aid - Colorado Department of …

Category:02250-1 of 18 SECTION 02250 TRENCH EXCAVATION, BACKFILL, …

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Trench backfill lifts

RD-EW-C2 Trench Excavation and Backfill - Department for …

WebThe bottom and trench walls may change from rock to soft clay or silt. The compaction equipment used by the Contractor may change from the bedding to the backfill material. All backfill material lifts except Structural Backfill Type 3 are 8 inches (200mm) thick. Structural Backfill Type 3 is 12 inches (300mm) thick. Soils Compaction Requirements WebSoil Compaction Handbook - Multiquip Inc

Trench backfill lifts

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WebAll trench backfilling operations shall use Trench Backfill Material and shall be compacted to 95% Standard Proctor density (AASHTO T 99) at ± 3% ... 6 inch lifts multiplied by the … WebMar 27, 2014 · A. Backfill: Soil materials used to fill an excavated trench. 1) Initial Backfill (Carefully Compacted Select Earth Backfill): Backfill placed beside and up to 12 inches above the top of the pipe in a trench, including haunches to support sides of pipe. 2) Final Backfill (Common Trench Backfill): Backfill placed over the initial backfill

WebUse for thick lift backfill above the Spring Line . 125-8.3.3.2 Bedding Zone: If the trench was not undercut below the bottom of the pipe, loosen the soil in the bottom of the trench immediately below the approximate middle third of the outside diameter of the pipe. If the trench was undercut, place the bedding material and leave it Webb) Plates must not lift off their bearing supports at any point. 4.10 For road openings parallel to the direction of traffic, road plates must extend past each end of the excavated trench: a) by a dimension not less than the trench depth; and b) with the same bearing support conditions as for the trench (i.e. by extension of bedding strips).

WebAny work carried out involving a trench or shaft excavated to a depth of 1.5m or greater is deemed to be high risk construction work and requires a safe work method statement. When excavation work is being conducted in close proximity to underground utilities assets, further controls should be put in place to reduce the risk of an asset strike ... WebTRENCH BEDDING AND BACKFILL SPECIFICATIONS SUB01X TRENCH BEDDING & BACKFILL SPECIFICATIONS 1.0 . INDEX . 1.0 INDEX 2.0 PURPOSE 3.0 GENERAL 4.0 MATERIALS ... lifts and compacted to 90% maximum density per ASTM D1557. 5.4 Backfill: 5.4.1 Public Rights-of-Way-Trenches in established streets, highways, or .

WebTRENCHING & BACKFILL 02202-2 1.03 SUBMITTALS A. Certified test reports for the permeable material backfill tested in accordance with ASTM C 136. B. Samples: Submit 1 gallon size sample of permeable material for approval. C. Shoring and Sheeting Plan: Before starting work submit a CAL-OSHA permit for the shoring and sheeting plan when trench …

Web6. Final Trench Backfill (Non-Primary Road Projects). a. Place suitable backfill material from 1 foot above the top of the pipe to the top of the trench. 1) Use no more than 8 inch thick … east atlanta logistics centerWebA backfiller and tamper unit (10) is disclosed which is a self contained unit that acts to both backfill and compact soil into a trench for complete restoration. The unit includes a tractor (12) which mounts a vibrator and tamping wheel assembly (14) and a backfill auger assembly (16). The vibrator and tamping wheel assembly (14) is mounted on a mast (50) … cu anschutz budget officeWebspringline. The haunch zone and the initial backfill provide the side support for the pipe that resists deflection. x Initial Backfill The initial backfill extends from the top of the haunch z one to 12 inches (300 mm) above the top of the pipe. The initial ba ckfill combined with the haunch zone act as lateral support for the pipe. cu anschutz bioethicsWebb) Plates must not lift off their bearing supports at any point. 4.10 For road openings parallel to the direction of traffic, road plates must extend past each end of the excavated trench: … east atlanta neurology \u0026 headacheWebMay 7, 2024 · Flowable Fill . Backfill can also be done using flowable fill, a cementitious material with a low water-cement ratio that is delivered to the job site by a ready-mix … cu anschutz behavioral healthWebOct 25, 2024 · I have attached a drawing of a typical trench section. As you can see, for the bedding and pipezone area, we are using Sand Class S1 (0-6mm size). For the backfill above the pipezone, it's either we use native materials (if suitable)/ imported backfill/ Sand Class S1 (0-6mm in size). The following are my concerns: 1. For the bedding and ... cu anschutz booster shotWebexcavate the pipe trench under water. The depth and width of the trench at such places shall be as specified above. The exact trench profile at river crossing will be shown on … cu anschutz brain imaging center