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Backfill define

Mine backfill is defined as the material used to fill the cavities (i.e., stopes) created by underground mining. Backfilling can be a means to dispose of sludge and/or tailings that may contain hazardous materials and to reduce surface environmental impacts by.
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Rick Szilagyi April 12, 2016 Mine backfill is defined as the material used to fill the cavities (i.e., stopes) created by underground mining. Backfilling can be a means to dispose of sludge and/ or tailings which may contain hazardous materials and to reduce surface environmental impacts by storing tailings underground.

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Backfill. The material like soil, which is used to fill the excavated area is called as backfill. In the construction site, lot of backfill materials are used. Some of the backfill materials are as.
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BACKFILL DRAINAGE OF RETAINING WALLS One area that can be commonly overlooked, or at least underestimated, is the necessity to drain the backfill of rainwater and/or groundwater. Hydrostatic pressure can cause or induce retaining wall failure, or at least damage.
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Backfill. 3.3.1. General. 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.
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Backfill: FIFO with backfill Builtin: First-In First-Out (FIFO) Interconnect Define the node interconnect used. Select one value for SwitchType: ... Define the location into which we can record the daemon's process ID. This is used for locate the appropriate daemon for signaling. Specify a specify the fully qualified pathname for the file.
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Ceph - What are the differences between backfill and recovery and what is peering?.
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THE CITY OF GALVESTON UTILITY BACKFILL MATERIALS 02229-1 SECTION 02229 UTILITY BACKFILL MATERIALS PART 1 G E N E R A L 1.01 SECTION INCLUDES A. Material Classifications ... Material use and application is defined in utility installation specifications and Drawings either by class, as described in Paragraph 2.01B, or by product descriptions,.
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Stiffness is defined according to two parameters. These are: (1) burial conditions, which include native soil, type of backfill and cover depth and (2) negative pressure, if it exist. Native soil characteristics are rated according to ASTM D1586 standard penetration test. Some typical soil blow count values relative to soil types and density.
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To refill a hole with the material dug out of it. backfill v. (archaeology) To refill an excavation unit to restore the former ground surface and/or to preserve backfill v. (US) To provide reserve support. backfill v. (US) To replenish or restock due to attrition or loss. backfill n. The material that has been used to refill an excavation.
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b. Initial backfill: is defined as backfill having a thickness in its compacted state from the surface of the bedding to a point 1 foot above the top of the pipe. c. Secondary backfill: the backfill zone extending from the initial backfill surface to the top of the trench. d. The limit is defined as the moisture content, in percent, required to close a distance of 0.5 inches along the bottom of a groove after 25 blows in a liquid limit device. Liquid Limit (LL or wL) - the water content, in percent, of a soil at the arbitrarily defined boundary between the semi-liquid and plastic states. Atterberg Limits Chart.

Placement of backfill is as defined and designated in this section. Trenches and shafts 6.9.1 Placement 1 - Mechanical compaction. For mechanical compaction, backfill must be placed and compacted using suitable mechanical equipment to achieve the minimum dry density ratios. Trenches and shafts - backfill and surface reinstatement. backfill (countable and uncountable, plural backfills) The material that has been used to refill an excavation. Reserve support personnel. That which backfills; a replacement. Material in a story set earlier in the past, providing history or context for the current action. Derived terms . backfill bias. Soils not classified as suitable backfill material, as defined in Section 3010, 2.02. b. Individual stones or concrete chunks larger than 6 inches and averaging more than one per each cubic foot of soil. c. Frozen materials. d. Stumps, logs, branches, and. A mezzanine is defined as a floor area that is not more than 1/3 of the individual room or space that it serves. ... IRC Section 404.1: Prescriptive Requirements with Soil Backfill – Provide the specific information required to comply with the requirements of IRC Section 404.1, and tables R404.1.1 (1)-(5). The basement wall section shall.

B. Backfill material containing limerock shall have sufficient sand to fill the voids in the limerock. No stones or rocks larger than 6-inches in diameter will be permitted in any backfill. Backfill material placed to a point at least one foot (1 ft.) above pipe and appurtenances shall be select backfill material not exceeding 2-inches in diameter.

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Glossary of Construction Terms. An abbreviation for air conditioner or air conditioning. The outside fan unit of the Air Conditioning system. It removes the heat from the freon gas and "turns" the gas back into a liquid and pumps the liquid back.

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How is Backfill (class of concrete surface finish, USACE) abbreviated? BF stands for Backfill (class of concrete surface finish, USACE). BF is defined as Backfill (class of concrete surface finish, USACE) very frequently.

  • Paste Backfill. Paste backfill is a high density backfill (>70% solids depending on SG). In order to pump material at this density, a component of fines is required. As a general rule, the fines. When one is faced with a problem, alleviating that pain as quickly as possible is a natural, almost reflexive, action. It is, however, extremely important to avoid jumping to solutions until a profound understanding of the current state is achieved. Backfill is required to fill up the empty stopes once they are mined out. Cemented rockfill or consolidated rockfill (CRF) is a type of backfill made by mixing cement slurry with rock aggregates from either the development waste or quarry [ 2, 3, 4 ]. CRFs have a number of advantages over other backfill materials.

  • A A reference source for materials used as embedment, backfill, back-dressing, and embankment, specified elsewhere in the Technical Specifications, and their associated material qualification testing requirements. B Source qualifications and handling of these materials. Backfilling One of the most crucial aspects of basement construction is how and when to properly backfill. Walls should be properly braced or have the first floor in place prior to backfilling. Otherwise, a wall which is designed to be supported at the top may crack or even fail from the large soil pressures. Backfill comprises the material above the embedment zone, in accordance with Drawing 7251/8/301 and AS 3725-2007. Backfilling must be carried out in accordance with the relevant Drawings. Appropriate methods of compaction must be used to achieve the compaction requirements shown on the Drawings. 3.2 define the different types of imported materials and their suitability for use as backfill 3.3 state why excavated materials may be unsuitable for backfill 3.4 define the correct storage arrangements for backfill materials 3.5 identify backfill materials that are suitable as surround to utilities apparatus. The meaning of BACKFILL is to refill (something, such as an excavation) usually with excavated material. How to use backfill in a sentence. ... First Known Use of backfill. 1874, in the meaning defined above. Learn More About backfill. Share backfill.

backfill material shall be newly bought gravel or approved processed gravel. This material shall be filled evenly on both sides of the pipe to the indicated grades and rammed with suitable tools so as to be compacted to at least 95 percent. Backfill shall not be placed on frozen material. backfill_cis column specifies whether a subject needs to be backfilled to CIS. This value as all the other values is set by Subject Management API when the queue record is created. Please note that even if backfill_cis=Y, there are cases when CIS backfill will be ignored. backfill 1. To re-fill a trench once an excavation has been completed. 2. Material used for backfilling, usually spoil from the original excavation. baulk balk A wall of earth left in place between excavated areas in order to maintain the structural integrity of the trench and/or expose a section to aid in interpretation. bladelet.

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This is where ‘Backfill’ makes an entrance. A backfill (also known as passback) is the term that can be given to any advertiser, yield group, demand partner, or even an in-house.

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  • The backfill may simply be broken rock, but more likely is a mix of cement and waste rock. This backfill serves to support the stresses that were originally borne by the ore, and we’ll talk more about the backfill material in a while. Deciding how much ore to recover before beginning the backfilling is an important engineering decision.

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How is Backfill (class of concrete surface finish, USACE) abbreviated? BF stands for Backfill (class of concrete surface finish, USACE). BF is defined as Backfill (class of concrete surface finish, USACE) very frequently.

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backfill [ bak-fil ] noun material used for refilling an excavation. verb (used with object) to refill (an excavation). Origin of backfill First recorded in 1950-55; back 2 + fill Words nearby backfill backer, backer-up, backfall, backfield, backfile, backfill, backfire, backfist, backfit, backflash, backflip. It means filling in missing values from past data. For instance, if you are pulling in data from a scheduled report, there will be a data gap if the report skipped a given time. So you have to. A. Section includes requirements for excavation, backfill, grading, and related items for pipeline construction. 1.2 DEFINITIONS . A. Trench Zones. 1. Pipe Embedment Zone : Area surrounding pipe in trench, consisting of Bedding Zone, Haunching Zone,. Backfill should be placed in lifts no greater than shown in table 2-1, preferably 200 mm (8 inches) or less and depending on the soil and type of equipment available. No backfill should be. The American with Disabilities Act's (ADA's) reasonable accommodation mandate imposes potentially significant obligations on employers. This is particularly true with regard to the obligation to provide additional unpaid leave and reassignment to a different position of a disabled employee unable to perform in his or her original position even.

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Here’s how to backfill trait realizations: Go to Audience Data > Signals > Search amd run a Signals Search or use the Signals Dashboard to identify the signals to use in the new trait. Create a new trait based on the desired signals. Use the Backfill Options in the Trait Expression section to select the time interval for which you want to. 209 Granular Backfill 209.1 Description (1) This section describes furnishing processed or selected granular materials, where the plans designate, as follows: 1. Backfilling excavations for frost heave or other unstable materials. 2. Backfilling storm sewers removals under 204. 3. Filling marsh areas associated with marsh excavation. 4. pumping and using drainage layer, as defined in ASTM D2321, placed on foundation beneath pipe bedding or thickened bedding layer of Class I material. ... backfill operations with less linear footage than specified in 1.05 D. 3. The testing agency shall determine at the time of testing the location of each compaction test within the specified.

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Retaining wall design could include any or all of loads and forces which are explained in the following sections: 1. Lateral Earth Pressure Acting on Retaining Wall. The main purpose of retaining wall construction is to retain soil; that is why soil lateral earth pressure is a major concern in the design. Sliding soil wedge theory is the basis. The definition of backfill is soil or rock used to reduce or fill former coal mines or other civil excavations. This word is also used as a verb, which means the work of filling excavations. In coal mining, backfill is more often defined as the work of filling the excavated coal deposits along with the overburden with stripped soil. backfill (countable and uncountable, plural backfills) The material that has been used to refill an excavation. Reserve support personnel. That which backfills; a replacement..

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Basements are typically built as conditioned space so that they can be used for storage, work or living space. Because of this, water penetration resistance is of paramount importance to basement wall design and construction. Following recommended backfill procedures will help prevent basement wall cracking during this operation.

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  • In South African gold mines, backfill performs a regional support role. The fill is normally free draining, resulting in a significant number of voids in the fill. Thus there is much convergence when the fill is subjected to pressure. Fosroc also notes "rapid drainage often results in a zone of non contact between the roof and the fill.

  • earthfill dam, also called earth dam or embankment dam, dam built up by compacting successive layers of earth, using the most impervious materials to form a core and placing more permeable substances on the upstream and downstream sides. A facing of crushed stone prevents erosion by wind or rain, and an ample spillway, usually of concrete, protects against catastrophic.

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  • Self-weight of the soil which has eroded Weight of continental ice sheet which has melted Desiccation of layers close to the surface The nature of consolidation of a clay soil affects its behaviour in the field and when tested in the laboratory.

  • .

Definition of the term 'backfill ' per official documentation of the United States Department of Defense. HOME AVIATION / AEROSPACE ARMOR & ARTILLERY INFANTRY WEAPONS.

earthfill dam, also called earth dam or embankment dam, dam built up by compacting successive layers of earth, using the most impervious materials to form a core and placing more permeable substances on the upstream and downstream sides. A facing of crushed stone prevents erosion by wind or rain, and an ample spillway, usually of concrete, protects against catastrophic.

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Backfill definition: to refill an excavated trench , esp (in archaeology ) at the end of an investigation | Meaning, pronunciation, translations and examples. In general, the two defining characteristics of any backfill are strength and flowability. All other characteristics play a role in either improving or impairing strength or flow.

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SECTION 02250 – TRENCHING, PIPE EMBEDMENT AND BACKFILL . PART 1 - GENERAL 1.01 SUMMARY . A. This section specifies requirements for trench excavation, pipe embedment, backfill ... As defined by , Section 02200 – Earthwork, paragraph WASTE MATERIALS. 2.03 BORROW MATERIALS A. As defined by , Section 02200 – Earthwork, paragraph BORROW. Backfill Approach Backfill will be provided using limited term (visiting or interim) positions and will be allocated as determined necessary by unit-level leadership − Please note that interim positions do not have a defined term, while visiting positions are capped at four years. People have ups and downs, and unfortunately, this can impact how they perform in an interview. By creating multiple interviewing steps, you get a true sense of how people behave regularly, which can help you determine who is right for the position. 3. Spending more time learning about candidates. The more times you speak to a candidate, the.

Metallurgists & Mineral Processing Engineers. For its extensive practical experience, 911 Metallurgist has a clear understanding of what successful mineral processing engineering is and how to go about achieving it. Your goal is the production of a material that is marketable and returns you and your investors sustainable revenues.

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Backfill scheduling allows the reserved job slots to be used by small jobs that can run and finish before the large job starts. This improves the performance of LSF because it increases the utilization of resources. How backfilling works For backfill scheduling, LSF assumes that a job can run until its run limit expires. When you create a user on the Splunk platform, you assign one or more roles to the user as part of the user creation process. Each role contains a set of capabilities. These capabilities define what users who hold a certain role can do. For example, if a user 'finn' holds the edit_tokens_settings role, this means that 'finn' can make changes to. Backfilling One of the most crucial aspects of basement construction is how and when to properly backfill. Walls should be properly braced or have the first floor in place prior to backfilling. Otherwise, a wall which is designed to be supported at the top may crack or even fail from the large soil pressures. . an abutment is the part of a bridge consisting of the cap, backwall, and wingwalls at the ends of a bridge which supports the superstructure, contains the earth in the approach fills, and directly receives the impact loads produced by traffic passing from the roadway onto the bridge.an abutment is a wall supporting the end of a bridge or.

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b. Initial backfill: is defined as backfill having a thickness in its compacted state from the surface of the bedding to a point 1 foot above the top of the pipe. c. Secondary backfill: the backfill zone extending from the initial backfill surface to the top of the trench. d.

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Backfilling Person 1 lays on back, pulling knees to chest, making an impromptu toilet. Person 2 then sits on "toilet", shits into person 1's ass. Person 2 "back fills " person 1. Once Bill. I don't think creating backfill ticket in such an instance is a good scenario because if the server instance is requested manually through API, there is no conditions for players to join this instance, and players are not restricted by any rules that is defined in the Queue. It is unfair for anyone to join via subsequent matchmaking. When an object has a status of Completed, backfill has been completed for the object. If an object has a status of Failed, then backfill failed for the object, and you must initiate the backfill. Budget Issue: Trailer vehicle license fee (VLF) backfill for International Registration Plan (IRP). Program: Shared Revenues. Finding or Recommendation: Recommend the Legislature eliminate this VLF backfill. This will provide $11.9 million in General Fund relief at the expense of lower funding to realignment programs.

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Within ÅSKAR a subproject called “DP2 Pellet optimization” was initiated to define the optimal backfill pellet properties and look into different pellet manufacturing methods. This report summarizes the main conclusions and results from the subproject two, DP2 Pellet Optimization. The subproject is a joint project between Posiva and SKB.

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Bentonite clay is a chemically inert, non-corrosive, natural clay. It is the most economical and efficient desiccant bag-filling material. It is also used as a backfill material for cathodic protection. There are different types of bentonite, each named after the respective dominant element, such as potassium (K), sodium (Na), calcium (Ca) and.

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When one is faced with a problem, alleviating that pain as quickly as possible is a natural, almost reflexive, action. It is, however, extremely important to avoid jumping to solutions until a profound understanding of the current state is achieved. backfill: [verb, transitive + intransitive] to refill (something, such as an excavation) usually with excavated material.

According to the EPS Industry Alliance, Geofoam is defined as follows: “EPS Geofoam is used in geotechnical applications such as lightweight fill for construction on soft ground, for slope stabilization, and retaining wall or abutment backfill; as well as for roadway and runway sub-grade insulation and foundation insulation.”.

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Backfill comprises the material above the embedment zone, in accordance with Drawing 7251/8/301 and AS 3725-2007. Backfilling must be carried out in accordance with the relevant Drawings. Appropriate methods of compaction must be used to achieve the compaction requirements shown on the Drawings.