{"id":516,"date":"2014-02-11T13:13:23","date_gmt":"2014-02-11T09:13:23","guid":{"rendered":"https:\/\/www.qualityengineersguide.com\/?p=516"},"modified":"2022-02-12T21:46:24","modified_gmt":"2022-02-12T13:46:24","slug":"pouring-concrete-on-slab-on-grade","status":"publish","type":"post","link":"https:\/\/www.qualityengineersguide.com\/pouring-concrete-on-slab-on-grade","title":{"rendered":"Method Statement for Pouring Concrete on Slab on Grade"},"content":{"rendered":"

After backfilling works the next is casting or pouring concrete on slab<\/a> on grade (ground), make sure that all the area beneath grade slab have been properly backfilled and compacted.<\/p>\n

Approval must be obtained from the Engineer for waterproofing and backfilling works prior to start slab on grade casting.<\/p>\n

Here is the method statement for pouring concrete on Slab on Grade preparation and concrete<\/a> pouring.<\/h2>\n

1. Title<\/strong><\/h4>\n

Method Statement for Casting or pouring concrete on Slab<\/a> on Grade.<\/p>\n

2. Purpose and scope
\n<\/strong><\/h4>\n

The purpose of this method statement for casting or pouring concrete on slab on grade is to explain the proper procedure on how to prepare and cast slab on grade or any horizontal element or member including fixation of steel reinforcement, MEP embedment’s, fixing of shutter etc. without injuries.<\/p>\n

3. Work procedure<\/strong><\/h4>\n

3.1 Site planning<\/p>\n

\u2022 Delivery – fresh concrete shall be batched from the approved supplier of concrete<\/a>. Concrete will be delivered direct to the site and to be received by assistant Quality Engineer for checking of the required criteria of concrete. The assistant QC Engineer will make sure the concrete delivered is as per the approved design mix for the situated member to be casted.<\/p>\n

\u2022 All data for testing on fresh concrete at site shall be recorded on the concrete pour card.<\/p>\n

3.2 Preparation for pouring concrete on slab on grade<\/p>\n

\u2022 After the blinding is casted and placement of waterproofing is done, the preparation and casting for slab on grade shall be done.<\/p>\n

\u2022 Fix the reinforcement steel as per the approved drawings, sometimes A393 BRC mesh is indicated in the drawing and most commonly use in 250mm thick concrete grade slab.<\/p>\n

\u2022 Any loose binder or ties along the splices reinforcement steel shall be re-tightened. Bend inward the free ends of the binding wire or ties.<\/p>\n

\u2022 Use PVC spacer for vertical bars and concrete spacer for bottom as concrete covers.<\/p>\n

\u2022 Ensure and coordinate with MEP staff for any MEP works required on the area as per approved drawings.<\/p>\n

\u2022 Fix the forms such; supports, sleeves etc., if any.<\/p>\n

\u2022 Any damaged materials used for form work or shutter like plywood shall not be used.<\/p>\n

\u2022 All surface of forms or shutter facing concrete shall be treated with shuttering oil and dampen with water few minutes before concrete will be poured.<\/p>\n

\u2022 Clean the slabs on grade using air compressor for dust or any small particles or deleterious materials that may impair the workability of concrete.<\/p>\n

\u2022 The surveyor will then checked the level of the projected top surface of the slab and place level strips if necessary to mark the exact level.<\/p>\n

\u2022 The concreting are as must be arranged with necessary equipment or tools for concreting use such as vibrators, power float machine, shovel etc.<\/p>\n

\u2022 Skilled and unskilled labor shall need to use safety requirements such as safety helmet, safety shoes, goggles, gloves, vest etc.<\/p>\n

\u2022 Safety devices and safety warnings shall be provided starting from the site entrance gate till the casting area.<\/p>\n

\u2022 Proper lighting must be available in case of night concreting.<\/p>\n

 <\/p>\n

\"castingorpouringconcreteonslabongradephoto\"<\/a><\/p>\n

 <\/p>\n

3.3 Concrete pouring on slab<\/a> on grade<\/p>\n

\u2022 The concrete mixer must be stopped at the check point for the inspection of slump test and to obtain sample cubes for test.<\/p>\n

\u2022 One set of cubes shall be taken every 50 cubic meter concrete, each set consisting of 6 cubes, 3 cubes to be tested on 7th days and 3 cubes to be tested for 28th days.<\/p>\n

\u2022 Extra three cubes can be made for re-checking if in case circumstances may happen.<\/p>\n

\u2022 Unload the concrete within 90 minutes from the batching plant loading time.<\/p>\n

\u2022 Compact the concrete properly by using mechanical vibrators, extra vibrator shall be available in case of any shortage or mechanical problems.<\/p>\n

\u2022 Use approved hardener material after casting concrete<\/a> when required. Make sure applications shall be as per manufacturer’s recommendation.<\/p>\n

\u2022 Use the power float for the smooth finish surface purpose. Store extra power float near the casting area in case of any mechanical malfunctioning.<\/p>\n

\u2022 Cure the casted area properly with covering concrete with hessian cloth and polythene sheet on top but before placing the concrete wet the hessian with water.<\/p>\n

\u2022 Cure the concrete by spraying water three times per day for a period of 7 days.<\/p>\n

\u2022 The casted area or member shall be protected by placing barricades to prevent plants and machineries damaged the concrete.<\/p>\n

\u2022 Concrete pour card shall be filled by Quality Engineer and to be submitted to the Engineer including concrete delivery notes, this task will be done whenever required.<\/p>\n

\u2022 Concrete cube test report shall be submitted to the Engineer<\/p>\n

4. Safety<\/strong><\/h4>\n
    \n
  1. All works shall comply with safety procedure or instruction set out in project safety plan and municipality rules and regulations.<\/li>\n
  2. Basic PPE to be worn by all staff and laborers.<\/li>\n
  3. Trained operator and banksman would be engaged to control or operate heavy equipment machine.<\/li>\n
  4. Provide sufficient lighting whenever night casting.<\/li>\n<\/ol>\n

    5. Equipment and tools<\/strong><\/h4>\n
      \n
    1. Concrete Pump<\/li>\n
    2. Concrete Mixer<\/li>\n
    3. Mini truck<\/li>\n
    4. Bob cat<\/li>\n
    5. Concrete vibrators<\/li>\n
    6. Wheel borrow<\/li>\n
    7. Slump tray<\/li>\n
    8. Slump cone and other associated tools<\/li>\n
    9. Rubber hammer<\/li>\n<\/ol>\n

      Related Article:<\/strong><\/span><\/p>\n

        \n
      1. Method Statement for Footing Concrete Pouring<\/a><\/li>\n
      2. Method Statement for Blinding Works<\/a><\/li>\n
      3. Why Understanding About Method Statement Is Important To Engineers In Construction<\/a><\/li>\n<\/ol>\n

        6. Materials and References<\/strong><\/h4>\n
          \n
        1. C40\/20 Concrete Grade with additives<\/li>\n
        2. Deformed bars or A393 BRC mesh<\/li>\n
        3. Approved drawing<\/li>\n<\/ol>\n
          Did you follow the above method statement for casting or pouring concrete on slab on grade? If you do, please write down your experience and suggestions in the comment box below.<\/em><\/h5>\n","protected":false},"excerpt":{"rendered":"

          After backfilling works the next is casting or pouring concrete on slab on grade (ground), make sure that all the area beneath grade slab have been properly backfilled and compacted. Approval must be obtained from the Engineer for waterproofing and backfilling works prior to start slab on grade casting. Here is the method statement for pouring concrete on Slab on Grade preparation and concrete pouring. 1. Title Method Statement for Casting or pouring concrete on Slab on Grade. 2. Purpose and scope The purpose of this method statement for casting or pouring concrete on slab on grade is to explain <\/p>\n","protected":false},"author":1,"featured_media":600,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[8,9],"class_list":{"0":"post-516","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-method-statement-civil","8":"tag-method","9":"tag-method-statement","10":"has_thumb"},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/posts\/516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/comments?post=516"}],"version-history":[{"count":0,"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/posts\/516\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/media\/600"}],"wp:attachment":[{"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/media?parent=516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/categories?post=516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qualityengineersguide.com\/wp-json\/wp\/v2\/tags?post=516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}