WORK: means the works in relation to the project as specified in the Contract Documents and shall include Temporary Works and Permanent Works as well as all or any portion of the Goods wherever manufactured or prepared which are to be used in the execution of this Contract and whether the same may be on the site or not. In addition, it is also cover the requirements for general concreting works including materials, mixing, formworks, reinforcement steel bar, curing, testing and other related requirement for concreting work of Broom Finish.
Make sure the BRC sheet is placed properly on spacer blocks avoid touching the lean concrete below. Place the concrete as close to its final destination as possible to avoid segregation. Removed the rebar before the concrete hardened. As per attached catalogue 5. Once finished brooming, go over the corners and control joint. This number of cubes may be reduced if consistently satisfactory results are obtained, or increased up to a maximum of 16 when, in the opinion of the Consultant additional tests are required as, for example, in the early stages of the work.
Test cubes shall be made, cured and stored under the same conditions as the works to which they relate and shall be transported and tested in compression in accordance with BS EN Reports of all tests certificates shall be submitted to the Consultant within 24 hours after testing to close Request For Inspection RFI.
Total cubes for each testing 7 days, 14 days and 28 days shall be determined by the Consultant. Every test cube shall be clearly and permanently marked with its code number and date of casting together with an indication of the part of the works to which it relates. The system of identifying and marking the cubes shall be decided by the Consultant. A record of such tests identifying the test cubes with the part of the work executed shall be kept at the site and made available to the Consultant on request.
The slump tolerance shall be within the range specified in the design mix concrete. The slump to be ensured within the design slump as indicated in design mix to prevent honeycombing. In case of failed slump test, the load of concrete supply shall be rejected as it may have adverse impact to durability of completed concrete structure. The protection shall be applied as soon as practicable after completion of placing concrete by one or more the following methods: a.
The concrete shall be covered with a layer of sacking canvas, hessian, straw mats, or similar absorbent material, or a layer of sand, kept constantly wet for 7 days; b. After thoroughly wetting, the concrete shall be covered with a layer of approved water proof paper or plastic membrane kept in contact with the concrete for 7 days; c.
The concrete shall be cured by application of an approved liquid curing membrane which shall be applied immediately after placing the concrete during the initial set stage and on vertical surfaces after removing the formwork.
The application of curing compound shall follow the instruction provided by the manufacturer. Concrete vibrator shall be in standby mode and available during concrete pouring.
In addition, Contractor shall ensure all the formwork support and bracing to be checked and tightened properly and cleaning of the debris internal of formwork should be in order and maintain. Concrete which has a slump of less than 50mm 2 in will be rejected. It shall be placed in such manner as to avoid segregation of the concrete or displacement of the reinforcement, other embedded items or formwork.
It shall be thoroughly worked against the formwork and around any reinforcement and other embedded items without displacing them. Water browser will be deployed at site to control the dust surface. In summation, in order to achieve safe, free risk and healthy working environment that including loss prevention, every practicable step must be taken by each and everyone engaged in this project site.
Ensure all gaps are selaed and the cleanliness mainatined. Depth of concreting work to be marked on formwork Lay reinforcement bar BRC ; to ensure size, position and spacing checked. To remove the rebar before concrete hardenend. Remove obstruction materials. Barricade working area. More Ashampoo Burning Studio KG - Burning multi-talent, multimedia allrounder and reliable archivist in one application.
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