Test Cylinders Clause Samples

Test Cylinders. (a) Casting and Curing. All test cylinders are the responsibility of the Contractor. With the exception of 28-day cylinders, cure all cylinders under the same conditions (environment) as the concrete they represent. Initially store then cure 28-day cylinders as per KT-22. When using SCC, do not rod or vibrate when making test cylinders for design or production, and use care when moving newly molded cylinders. For the testing purposes described below, the “total volume of concrete placed” is defined as each 40 cubic yards of concrete or fraction thereof placed in each line, within each curing enclosure, during a continuous working period. Make one group of three or more cylinders for each third of the total volume of concrete to be placed. Note the limits of the concrete in the beds represented by each of the groups of cylinders. Mark and identify all cylinders groups as 1, 2 and 3 with marked group 1 representing the first third of the total volume of concrete placed, marked group 2 representing the second third of the total concrete placed, and marked group 3 representing the final third of the total concrete placed. To facilitate the testing of multiple sets of cylinders for stripping and shipping, each group may contain more than 3 cylinders. Mark cylinders within a group as xA, xB, xC, xD, xE where “x” is the group number (always 1, 2, or 3) and A through E are the unique cylinder identifying marks within the group. A minimum of two cylinders (i.e. xA & xE) are required for each group and are to be used for stripping and 28-day strength, respectively. At least one additional cylinder (i.e. xC) is required for each group if early shipping is desired. Finally, optional additional cylinders (i.e xB & xD) for each group will allow more than one set of test cylinders for stripping and shipping. Identify which cylinders will be used for 28-day testing (i.e. 1E, 2E, 3E) then store and cure these three cylinders as per KT-22. Follow the procedure of making sets of cylinders from early (group 1), middle (group 2) and late (group 3) placement, during normal production operations. When operations are interrupted or changed (i.e. equipment break-down, very small placements, etc.), adjust the cylinder making schedule to match the production, and provide adequate cylinders for later shipping strength testing. Coordinate this revised schedule with the Engineer on the production site.
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Test Cylinders. A. Making and curing concrete test cylinders shall be carried out in accordance with CAN/CSA A23.2-3C, except that the time for cylinders to reach the testing laboratory shall be between 20 and 48 hours. 1. The test cylinders shall be cast in standard CSA approved heavy duty steel or plastic moulds. Plastic moulds shall have a wall thickness of at least 6 mm. For concrete containing silica fume, the ends of cylinders shall be ground flat prior to testing. B. Handling and transporting of the cylinders shall be in accordance with CAN/CSA A23.2-3C. No extra laboratory curing time shall be allowed for cylinders that are delivered late to the laboratory. C. Temperature-controlled storage boxes for test cylinders shall be provided, as specified in Section 8.3.2.1 of CAN/CSA A23.2-3C for a period of at least 24 hours and for protection of the cylinders from adverse weather and mishandling until removed from the Site. 1. A max-min thermometer shall be provided for each storage box and for recording site curing temperatures for all test cylinders. 2. Storage in a portable building which will be used during the first 24-hour storage period shall not be permitted. D. Test cylinders shall be tested in compression in accordance with CAN/CSA A23.2-9C by an independent CSA certified testing laboratory. E. If the test cylinders exhibit frost etchings or were stored at temperatures below 10 degrees Celsius or above 25 degrees Celsius, or were otherwise mishandled, the concrete represented by the test cylinders shall be rejected and replaced unless core testing carried out in accordance with Section 4-
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Related to Test Cylinders

  • Crane Erection & Jumping (a) Cranes and man/material hoists may be erected, altered, climbed and dismantled during times when ordinary production works are in progress subject to the work being done in full compliance with a relevant operational safety zone (OSZ) plan which has been developed specifically for that operation with consideration to overall site safety. (b) The crane crew for each tower crane (Crane Crew) must consist of the following: (i) crane driver; and (ii) three (3) dogmen. (c) In addition to the appropriate tickets held by the crane driver and the dogmen, the following high risk licences must be held amongst the Crane Crew: (i) rigging; and (ii) material handling. (d) Where a Project consists of a single Crane Crew, the Employer should endeavour to ensure another member of the Crane Crew holds a crane driver licence.

  • Tooling Unless otherwise specified in this Agreement, all tooling and/or all other articles required for the performance hereof shall be furnished by Seller, maintained in good condition and replaced when necessary at Seller's expense. If NETAPP agrees to pay Seller for special tooling or other items either separately or as a stated part of the unit price of Goods purchased herein, title to same shall be and remain in NETAPP upon payment therefore.

  • RE-WEIGHING PRODUCT Deliveries are subject to re- weighing at the point of destination by the Authorized User. If shrinkage occurs which exceeds that normally allowable in the trade, the Authorized User shall have the option to require delivery of the difference in quantity or to reduce the payment accordingly. Such option shall be exercised in writing by the Authorized User.

  • Test The outer surface of the lamp lenses shall be subjected once or more than once to the action of the sand jet produced as described above. The jet shall be sprayed almost perpendicular to the surface to be tested. The deterioration shall be checked by means of one or more samples of glass placed as a reference near the lenses to be tested. The mixture shall be sprayed until the variation in the diffusion of light on the sample or samples measured by the method described in Appendix 2, is such that: Δ d = (T5 - T4) / T2 ≤ 0.0250 ± 0.0025 Several reference samples may be used to check that the whole surface to be tested has deteriorated homogeneously.

  • TOOL STORAGE 1. A company shall provide on all construction jobs in towns and cities, and elsewhere where reasonably necessary and practicable (or if requested buy the employee), a suitable and secure waterproof lock-up solely for the purpose of storing employees’ tools, and on multi-storey and major projects the company shall provide, where possible, a suitable lock-up for employees’ tools within a reasonable distance of the work area of large groups of employees. 2. Where an employee is absent from work because of illness or accident and has advised the company in accordance with Clause 33 – Personal Leave of the award, the company shall ensure that the employee’s tools are securely stored during his/her absence.