precast concrete method statement

3.0 Definitions. OSHA has provided strict guidelines to various employers to manage operational safety in the concrete manufacturing industry. Polythene sheets, hessian cloths and sweet water arrangements shall be arranged for the proper curing. Various material shifting techniques and sources such as Loading, transportation & offloading work shall be accomplished with great care to avoid and minimize any major destruction and or deterioration to the precast structure and objects. Truck mixers for transporting concrete, The company shall implement and adhere to the policies stipulated in the OHSQ Management System in compliance to OHSAS 18001: 2007 and the procedure mentioned in the Occupational Health and Safety (OHS). The employer not only needs to design the training to help employees follow safety procedures, but the training methods should be equally cost-effective and effectively engaging. The purpose of this civil work method statement is to define the procedure for the preparation and construction of Cast in Place Concrete Works for substructures in accordance with the requirements specified in the relevant specifications, procedures and drawings, considering safety and quality of the work activities. Before proceeding to the erection of the PPC and other objects/materials, a survey of the working area to get Precast/prestressed concrete (PPC) parts shall be accomplished to observe and monitor carefully for any difference in dimensions or levels beyond the tolerances. The risk and loss that occur with risk depend on the level of hazard and how it can be avoided. Blinding concrete for the structures and trenches will be placed using a pump. Test cube samples are prepared following client's specification. Alignment of the slab shall be done to maintain the line, level, straightness, and verticality. That that is is that that is not is not is that it it is, Australian Institute of Health and Welfare. The aim of this method statement is to describe the procedure that will be adopted for erection of Precast and Pre-stressed concrete Elements. This preview shows page 1 - 3 out of 6 pages. In case of horizontal stocking for some elements. Concrete Bucket. Best Editable Construction QHSE Documentation Portal. Proper concrete cover will be considered using the plastic spacers. Kickers shall be used at the base of all columns and walls. Quality Control is briefly mentioned in this methodology, for more details, refer to the following documents: ISO-QP-8.2.4 and GEN . Cast-in-situ piles/foundation shall be accomplished as per the approved layout & drawing. out by experienced operatives who will be supervised during the whole of the works. The exact position of all works will be established by the main contractor from control points, which are shown on the panels and in conjunction and as agreed with the Engineers surveyors. Precast/prestressed concrete Elements shall be transported to the site on a flatbed trailer, Low bed trailers and A frame trailers are generally standard 12 -15-meter length. pre-pour and delivery inspection checklists, 2. Poker vibrators 5.3 Grouting Preparation: 5.3.1 Before grouting pouring application starts, ensure that formwork and concrete surface shall be free from all kinds of dirt, dust, and debris and shall be vacuum clean and air blown. Moulds shall be rigid, even and flat in order to provide good quality surface finishes. Large Panel System. A method of building a precast concrete construction includes lifting precast elements from a trailer load to the respective designated location via crane. Prior to demoulding, a temporary bracing to be fixed in order to avoid cracks in the openings corners using a special socket connected to the RFT of the panel. Detailed description for all manufacturing processes starting from casting moulds preparation till the delivery of the product to job site. Curing of kerb will be done by applying curing compound / or any other suitable method. The Builder Assist Precast Concrete Panel Installation SWMS is the . METHOD STATEMENT ON THE REPAIR OF PRECAST BEAM DEFECTS, MISSING CAPPING LINKS AT PRECAST BEAM 2PT4-4a AND 2PT14 PROJECT: SENGKANG N4C3 PROCEDURE 1) Drill the required holes to a minimum depth 90 mm. PREPARATION OF SHOP DRAWINGS OF PRECAST DETAILING, Pregabricated Prefinished Volumetric Construction (PPVC), GUIDING THE START OF YOUR PRECAST CONCRETE PRODUCTION. To ensure better compaction of concrete, the moulds if applicable, shall be fitted with mould vibrators. The fourth step plans for safety management. Moulds shall be rigid, even and flat in order to provide good quality surface finishes. One layer of 1000 gauge polythene sheet shall be laid prior to arrangement of any blinding. The mould stopper sides will be fabricated from steel channels and / or wooden timber, the mould dimension and details will be as per the latest approved shop drawings. pre-pour and delivery inspection checklists Typical sketch for lifting & erection of Precast column& beam in attached Lifting and Erection drawings. Totally precast concrete floors are composed of units, which are totally cast at the . Post production and delivery inspection shall be carried out by precaster and to be approved by the client representative. The company shall implement and adhere to the policies stipulated in the OHSQ Management System in compliance to OHSAS 18001: 2007 and the procedure mentioned in the Occupational Health and Safety (OHS) Materials test reports by either supplier / precaster. Major repair works shall be done according to approved method statement. Also, make sure that this work method is essentially approved by the Consultant accordingly. Your response must be at least 75, FOR BSCM, BSHM, BSHMQSI, and BSTM As Researchers of Skynet International, the management has tasked your group to compose a persuasive or argumentative academic paper about one of the most well-known, As Financial Analysts and Researchers of Skynet Finance Co., Inc., the management has tasked your group to compose a persuasive or argumentative academic paper about one of the most well-known social, For BSA, BSAIS, BSBA, BSBAQSI, and BSMA As Financial Analysts and Researchers of Skynet Finance Co., Inc., the management has tasked your group to compose a persuasive or argumentative academic, Consider the following accident scenario: Three workers were assigned to replace a water valve located in an underground concrete vault. The manufacturing of precast components shall be executed based on the shop-drawings and specifications approved by the client. If Precast/prestressed concrete Elements are stored at the site, they should be as close as possible to the crane to avoid double handling. The [], Your email address will not be published. The process include detailed design, workshop drawings, Sequence of work, Quality Control System, Tolerances, Risk involved and risk controls, Housekeeping, to be adopted during the erection of Precast . All calculations and drawings mandatory to develop the correct positions of the work will be tidily made and will be readily available to the project or site Engineer for review and approval. The finished surface of the product shall be according to client's requirement. A Project Quality Plan (PQP) shall be prepared to ensure the product's compliance to quality and standard required by the client. Megawide is currently building six projects with precast elements, totaling around 12,000 units. The ability to deflect or absorb sound also makes precast concrete a smart acoustic material. The Erection of the PPC elements shall be accomplished by a Mobile crane with recommended and sufficient lifting capacity. 3. The moulds will be thoroughly cleaned and an approved oil base releasing agent will be applied manually. Typical sketch for lifting &erection of precast column in attached Lifting and Erection drawings. -. The precast column will be placed on the Cast-in-situ piles/foundation, (T20 dowel from CIS foundation will be inserted into 50 mm corrugated hole pipe of precast concrete element). The maximum height of stacking should be observed to prevent toppling. All steel reinforcements shall comply to SS 2:1999 and SS32:1999, ASTM-A416 standards or other equivalent applicable standards. Inspection records, ie. The production of the precast components and other related activities shall be carried out at the factories. PPC Column alignment shall be done, and line, level, verticality, and straightness shall be kept as per the approved erection design and or layout. Cast in-situ steel reinforcement shall be provided as per the approved steel reinforcement drawing. A Project Quality Plan (PQP) shall be prepared to ensure the products compliance to quality and standard required by the client. Course Hero is not sponsored or endorsed by any college or university. The risk factor ranges from 1 to 9, where 1 to 3 is low to moderate, 4 to 6 is moderate to severe, and 7 to 9 is severe to extreme. If necessary, suitable, and safe working platforms will be provided in all locations required to allow a clear and easy approach for the workers to produce quality connection details. All the surface of foundations will be covered by wet sack cloth to maintain this. Hollow core Slabs will be placed on beam CIS retaining wall corbel as per the attached details & design. Fabrication Tolerance. Precast stairs offer several advantages over other construction methods. This method statement was prepared by: R. Leveller. Construction joints shall be in the locations as indicated in the drawings, or as submitted in a proposal and always at right angles to the structural members axis. - INTRODUCTION. Precast concrete manufacturers strive to achieve the best finish on all structures, whether products are destined for a downtown building veneer or buried in a backyard. 6m to 12m, 6mm. Precast is used within exterior and interior walls. Precast Construction is effective in terms of time, labours . These pads are set slightly lower than the brackets so that the stairs are pitched forward for water run off. Typical sketch for lifting &erection of slab in attached Lifting and Erection drawings. This method statement describes the practices and methods to be used with regards to placing, curing and defect rectification of concrete works & blinding concrete. Fixing the embedment (Recess, Elec. Method statement for repair of concrete surface 1. When working with Nitterhouse Concrete, your prefabricated concrete stairs are prepared at our 127,500-square-foot facility.Architects, construction professionals and engineers alike can benefit from the stress-free design process in which our experts make recommendations for setups. This is a rolling sequence. In case of lifting horizontally, a flatbed truck is used to transfer the panels to the stock area. Grade of concrete will be according to approved concrete design mix. Precast is a method of industrialized design, production and construction using precast concrete products. Spreading the concrete all over the mould. The manufacturing of precast components shall be executed based on the shop-drawings and specifications approved by the client. The moulds for the fabrication of precast components shall be purpose made of steel. Elements will be supported over the trailer by a special belt or steel chain fixed to the trailer. The essential, equipment, tools and lifting sling and a safety device shall be used for lifting. Vertical and horizontal tolerances with respect to true line and level will be + 6mm. Lorry cranes and trailers 3.3 CONCRETE. The action to be take to resolve any non-conformity will be proposed by main contractor and subsequently approved by consultant. The works will be carried. List of Method Statement. The concrete pile is driven into the ground together with a soil solidifying supply pipe and a cement slurry supply pipe. Erection of slab (hollow core/ form slab). All the concrete encased ducts installation shall be approved from the Engineer. After the initial set of the concrete and when the concrete is hard enough to not be damaged by such an action, the exposed concrete surface shall be covered with drenched hessian sacks. Forklifts CONCRETE REMOVAL 3.1 Impacting method (for honeycombed and exposed re-bar) 3.2 Grinding (for abrupt or gradual irregular surfaces) 3.3 Cutting 3. Wooden spacers should be used; all spacers should be stacked exactly on top of each other. Title Method Statement for Precast Boundary Wall Works 2. The concrete shall be placed in accordance with the specification for Concrete cast in place and the main points being as mentioned below. A proper careful and authentic survey also should be conducted for the dowel bars connecting the panels to the slabs appropriately. Quality control procedures, test requirements and standards shall be according to the Project Quality Plan. There are four major types of precast systems which are classified based on the on the load bearing structure: 1. The precast will be produced in xxxx precast factory located in xxxxx. Updated 6-Mar. Form release agent shall be used to strip the moulds without damaging the concrete. Repairing works for any well-known defects in precast /prestressed concrete elements shall be accomplished using authorized restoration materials or any system-authorized fabric. The pile footing in the ground is formed with concrete formations around the contracted sections, thereby increasing the bearing . All concrete elements are to be handled carefully and slowly to avoid damage during transit. Precast Concrete Panels should be clearly identified to allow traceability & correct erection positioning. Hand Tools. Supplier shall provide Mill Certificates and Test reports for all their deliveries. 8246. Method Statement For Construction Of Concrete Piles. Small concrete pads are set under each side of the steps toward the front of the unit. Compaction of concrete shall either be by poker and/or mould vibrators Curing of concrete is ambient curing only. Advanced Precast Concrete System (APCS) is a construction method that: Shall adopt precast slabs. Method Statement - Precast Manhole.pdf - METHOD STATEMENT CONSTRUCTION OF PRE-CAST MANHOLE APPROVED BY: . 3m or under, 3mm. The following records shall be maintained by the precaster during the production period: 1. Alignment of the beam shall be done to maintain the line, level, straightness, and verticality. Smoothing the concrete surface will be done using the hand trowel. 7.6 Project-specific checklists and forms. Precast concrete construction advantages. method statements Safe Working Method Statements must be concise but informative and should contain the following information as a minimum. The second step is to identify hazards. Lifting shall be done under the supervision of certified Lifting Supervisor. For over 10 years, Megawide has been building high- and mid-rise projects using precast elements and believes that this construction method will define the future of affordable housing. 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Precast stairs have a smooth form finish and can be cast with integrated non-slip tread as requested. The precast components shall be lifted by overhead gantry cranes and using the demoulding/lifting hooks. 8.2 Fresh concrete tests shall be carried out in accordance with EN 12350-2:2009. Concrete have to be cured by sweet water as instructed by the client/consultant. The initial methodology to make sure that safety practices are followed is to organize different pieces of training and workshops to help employees stay safe and avoid hazardous incidents. 3. Precast concrete units must be straight and true to size and shape and comply with PCI MNL 116 and the following product tolerances: a) Overall height and width of units, measured at the face exposed to view, as follows: 1. Pinholes and concrete chip-offs shall be sealed/patch up using approved repair materials. 3.2 PE/SE Project Engineer/Site Engineer The reader should refine the contents by consultation with professionals and precasters. The likelihood is classified as remote, occasional, and frequent (ranging from 1 to 3 respectively). 3.1 CM Construction Manager. The concrete mix design to be used shall be submitted to the appointed QP for review and approval to proceed with the trial mix. Only authorised-trained operatives will be permitted to drive any plant. This method statement applicable construction of manhole for varies pre-cast manhole. To ensure better compaction of concrete, the moulds if applicable, shall be fitted with mould vibrators. Factory shall fabricate the precast components and deliver them to construction site. METHOD STATEMENT CONSTRUCTION OF PRE-CAST. Quality Control is briefly mentioned in this methodology, for more details, refer to the following documents: ISO-QP-8.2.4 and GEN-QP-001. Shoring Boxes/Shoring/Sheet Pile (where necessary), Precast manhole chamber ring/taper top/rest platform/make up piece, Sand or Selected material for back filling, Installation of temporary support for excavation more than 2 meter (I-Beam,sheet piles,etc), The works will be carried out by experienced operatives who will be supervised during the, Only experienced (minimum 10 years experience) trained operatives, will operate the plant and equipment. Hand Compactors 4. Quality concrete sheet piles on sale - you can find concrete sheet piles from the most reliable . Storage area should be relatively level and firm. Should the test fail, the concrete shall be returned to the supplier for replacement. The PSC girder Bridge is completed by constructing the concrete deck on the top of PSC girders. The concrete mix design to be used shall be submitted to the appointed QP for review and approval to proceed with the trial mix. Each method can be selected according to the site conditions; each shown below. A field survey and stakeout of the existing cast in situ dimensions will be performed to permit accurate placement of Precast/prestressed concrete elements. Curing compounds if used shall be approved and of the clear type. The Contract Unit Prices covering the supply and laying of pipes shall include the entire cost of furnishing the pipes and all materials for joints and lean concrete bedding if needed, the cost of all labor and equipment required for transporting, laying, jointing and bedding the pipes. The precast components shall be lifted by overhead gantry cranes and using the demoulding/lifting hooks. MethodstatementHQ Serving the Construction Industry Since 11 Years. 4. vehicles and mount abrasive wheels on company machines. All steel reinforcements shall be from approved supplier or from client designated supplier. Pipes, boxes with different sizes, sockets and block outs to be fixed inside the moulds. (JSA) or Safe Work Method Statement (SWMS). Level Guides shall be installed for the level maintenance of concrete. Offloading and loading of panels should be done using a suitable mobile crane and elements shall be stacked in steel racks as per standards. 2. Supervise closely, the activities designated to them . Date: 01/03/11. Test cube samples are prepared following client's specification. The PQP consists of Quality Control plans, manual and procedures, detailed operation control, inspection forms, repair methods and other records that are used in the manufacturing process. Revi No. A precast concrete pile which includes a tapered end with alternating enlarged cross-sections and contracted cross-sections through its length. The following equipments/machineries are used in the fabrication of precast concrete units. Testing and Commissioning Method Statements, Commercial & Finance Management Procedures, Exhaust Fan & Ventilation Fan Installation Procedure Including Accessories, Bored Pile (Cast-in-Situ) Construction Method Statement, Precast Post Tensioned Beam Installation Procedure, Painting Standard Specifications for Enamel & Emulsion Painting Techniques, Underground Fuel Tank Back Filling and Cathodic Protection Installation Procedure, Installation Method Statement for Water Feature Piping Equipment and Accessories, Hand tools, hand saw, wire cutter, brush, and measuring tapes. All grid lines should be given to the primary contractor for each zone and benchmark level. Purpose and scope The aim of this method statement is to describe the process and sequence of erection of precast elements for the boundary wall in this project. Scope:- Detailed description for all manufacturing processes starting from casting moulds preparation till the delivery of the product to job site. Want to read all 6 pages? It is common for DOTs to ask for lengths of Required fields are marked *. All concrete to be used in the production shall be approved by the client or the appointed QP. 3m to 6m, to +3mm, -5mm. 1. SCOPE: Manufacturing the precast concrete element. December 9, 2019. Scaffolding will be used mainly for the temporary support or alignment of the panels or in case of grouting finishing or elements fixing. The steel guide to fix the electrical boxes at both surfaces of the mold and timber guide to fix the block outs and recesses. The finished surface of the product shall be according to client's requirement. 2. A construction method for simple bridges or continuous bridges using prestressed concrete girder (PSC girder) and precast slabs (PSC slabs) where prestress is applied to the lower portion of the center of the girder. High-strength, lightweight precast concrete is often used to build foundations and basements. The moulds for the fabrication of precast components shall be purpose made of steel. Following this method of statement will ensure that concrete works activity will be expedite in an efficient and safe manner in . Preparation of construction joints shall be done by mechanical chipping taking care not to dislodge the coarse aggregates. Precast Concrete pipe on storage and ready to use. 3) Fill up the holes with the approved chemical Hilti HIT-RE 500. It is convenient to establish precast yard and to erect the precast elements at (near) site which speeds up the process & prevents delays in large scale construction projects .

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