CONCRETE MIXING Sample Clauses

The CONCRETE MIXING clause sets out the requirements and standards for preparing and mixing concrete on a construction project. It typically details the types and proportions of materials to be used, the mixing process (such as on-site or ready-mix), and quality control measures like testing for consistency and strength. By specifying these procedures, the clause ensures that the concrete used meets structural and durability standards, thereby reducing the risk of defects and ensuring the safety and longevity of the finished structure.
CONCRETE MIXING. A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C 94/C 94M, and furnish batch ticket information. 1. When air temperature is between 85 and 90 deg F (30 and 32 deg C), reduce mixing and delivery time from 1-1/2 hours to 75 minutes; when air temperature is above 90 deg F (32 deg C), reduce mixing and delivery time to 60 minutes. PART 3 - EXECUTION
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CONCRETE MIXING. A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete in accordance with ASTM C94/C94M[ and ASTM C1116/C1116M] and furnish batch ticket information.
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CONCRETE MIXING. A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete in accordance with ASTM C94/C94M and furnish batch ticket information. B. Project-Site Mixing: Measure, batch, and mix concrete materials and concrete in accordance with ASTM C94/C94M. Mix concrete materials in appropriate drum-type batch machine mixer. 1. For mixer capacity of 1 cu. yd. or smaller, continue mixing at least 1-1/2 minutes, but not more than five minutes after ingredients are in mixer, before any part of batch is released. 2. For mixer capacity larger than 1 cu. yd., increase mixing time by 15 seconds for each additional 1 cu. yd. 3. Provide batch ticket for each batch discharged and used in the Work, indicating Project identification name and number, date, mixture type, mixture time, quantity, and amount of water added. Record approximate location of final deposit in structure.
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CONCRETE MIXING. The proportioning of aggregates and cement shall be weight in accordance with the current Michigan Department of Transportation "Mortar Voids" theory with the quantities of each shown on the delivery tickets for each batch. Concrete shall be mixed only as required for immediate use and any which has developed initial set shall not be used. Concrete which has partially hardened, shall not be retempered or remixed. The use of a fractional sack of cement will not be permitted unless the fractional part is measured by weight. The mixer shall be cleaned thoroughly each time when out of operation for more than 30 minutes. Concrete mixes will be measured as described in the current "Method of Slump Test for Consistency of Portland Cement Concrete" of the ASTM Designation C-143. The concrete shall at all times be of such consistency and workability, that it can be puddled readily into corners and angles of the forms and around joints, dowels, tie bars and reinforcement without excessive spading, segregation or undue accumulation of water or laitance on the surface. The mixing of concrete in truck mixers enroute from the batching plant to the site of the work will be permitted only for mixers equipped with an approved revolution counter which will either record the number of revolutions of the mixer drum at mixing speeds and the number of revolutions at agitating speeds, for each batch, or will record the revolutions of the mixer drum only when the mixer is operating at mixing speeds. Truck mixers not so equipped shall mix the concrete at the batching plant site. The mixing shall be done on a reasonable level area, sloping not more than 2 percent in any direction. The concrete shall be discharged within a period of one hour after the introduction of the mixing water with the dry materials or within a period of 1-1½ hours after the cement has been placed in contact with the aggregates, and it shall be within the specified limits for consistency and air content and it shall not be segregated.
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Related to CONCRETE MIXING

  • Drainage Systems (1) Clear culvert inlets, outlets, and sediment catching basins. (2) Maintain waterbars, drainage dips, and other water diversion measures. (3) During active use, patrol and maintain functional drainage. (4) Repair damaged culvert ends.

  • Welding Welding and use of cutting torches or cutoff saws will be permitted only in areas that have been cleared or are free of all material capable of carrying fire. Flammable debris and vegetation must be removed from within a minimum 10-foot radius of all welding and cutting operations. A shovel and a 5-gallon standard backpack water container filled and with handpump attached shall be immediately available for use in the event of a fire start. C8.64 – DEBARMENT AND SUSPENSION CERTIFICATION (3/18). Pursuant to 2 CFR 180 and 2 CFR 417, Purchaser shall certify and obtain certifications from its Subcontractors regarding debarment, suspension, ineligibility, and voluntary exclusion, including additional Subcontractors obtained after award of this contract. “Subcontractors” are participants in lower tier covered transactions. Purchaser may rely upon a certification of a prospective Subcontractor that it is not proposed for debarment under 48 CFR 9.4, debarred, suspended, ineligible, or voluntarily excluded from participating in covered transactions or timber sales, unless Purchaser knows that the certification is erroneous. Purchaser shall keep the certifications of its Subcontractors on file until timber sale Termination Date and any extensions thereof, and will provide a copy at the written request of Contracting Officer. Nothing contained in the foregoing shall be construed to require establishment of a system of records in order to render in good faith the certification required by this Subsection. The knowledge and information of Purchaser is not required to exceed that which is normally possessed by a prudent person in the ordinary course of business dealings. If Purchaser knowingly enters into a timber sale transaction with a person who is proposed for debarment under 48 CFR 9.4, suspended, debarred, ineligible, or voluntarily excluded from participation in covered transactions or timber sales, in addition to other remedies available to the Government, Forest Service may pursue available remedies, including suspension and/or debarment. Contracting Officer shall provide a copy of Forms AD-1047 Certification Regarding Debarment, Suspension and Other Responsibility Matters – Primary Covered Transactions and AD-1048 Certification Regarding Debarment, Suspension, Ineligibility and Voluntary Exclusion – Lower Tier Covered Transactions to the Purchaser. Purchaser shall complete form AD-1047 and provide to the Contracting Officer upon request. Purchaser shall require each subcontractor to complete form AD-1048 and provide to the Contracting Officer upon request.

  • Dewatering (a) Where the whole of a site is so affected by surface water following a period of rain that all productive work is suspended by agreement of the Parties, then dewatering shall proceed as above with Employees so engaged being paid at penalty rates as is the case for safety rectification work. This work is typically performed by Employees engaged within CW1, CW2 or CW3 classifications. When other Employees are undertaking productive work in an area or areas not so affected then dewatering will only attract single time rates. (b) Where a part of a site is affected by surface water following a period of rain, thus rendering some areas unsafe for productive work, consistent with the Employer’s obligations under the OH&S Act, appropriate Employees shall assist in the tidying up of their own work site or area if it is so affected. Where required, appropriate Employees will be provided with the appropriate PPE. Such work to be paid at single time rates. Productive work will continue in areas not so affected. (c) To avoid any confusion any ‘dewatering’ time which prevents an Employee from being engaged in their normal productive work is not included in any calculation for the purposes of determining whether an Employee is entitled to go home due to wet weather (refer clauses 32.4 and 32.5)

  • Moonlighting Employee will focus his/her professional time, ability, and attention on City business during the term of this Agreement. To the extent consistent with applicable law, Employee shall not engage in any other business duties or pursuits whatsoever or, directly or indirectly, render any services of a business, commercial, or professional nature to any other person or organization, whether for compensation or otherwise, without the prior consent of the City Manager, except that: (1) The expenditure of reasonable amounts of time not in conflict with the City's needs and interests, for educational, charitable, community, and professional activities, shall not be deemed a breach of this Agreement and shall not require prior consent. (2) This Agreement shall not be interpreted to prohibit Employee from making passive personal investments or conducting private business affairs if those activities do not materially interfere with the services required under this Agreement or create conflicts of interest.

  • Fabrication Making up data or results and recording or reporting them.