3 Construction of the formwork structure 12 The occupant must ensure that each formwork structure – consists of a healthy material, good construction and sufficient strength; – be free from patent errors; – be suitable and safe for its intended use, and – be properly tightened or attached together to maintain position and shape The formwork components used to erect the formwork structure must be in good condition and free from corrosion. Steel formwork structures must be galvanized and not painted for corrosion protection. (Appendix C) Formwork structures in good condition and free of corrosion. 14 Given that the structural capacity of the formwork structure is expected to decrease over time, for example: due to corrosion, residents may consider a load test (in the test laboratory) as an additional safety precaution to test design assumptions regarding the strength of the formwork structure and its structures, especially when casting important structures. 15 couplings used to stiffen and attach together the formwork structure must be adapted to the intended use, i.e. rectangular couplings for vertical bars and swivel couplings for struts. The use of the wrong components could reduce the structural capacity of the formwork structure. (Appendix D) 16 Responsible persons develop and implement a fall prevention plan to ensure that their workers who set up and dismantle formwork structures do not fall from a height. Measures may include precautions for safe work platforms with appropriate guardrails and a personal fall protection system with secure anchors. 17 Where it is necessary for a professional engineer to design a formwork structure, the formwork structure shall be constructed in accordance with the engineer`s design and drawings. 9 formwork structures built according to PE design. 18 A formwork structure designed by a professional engineer may be modified or approved only if its design and drawings have been verified and approved by an engineer.

After construction, the specialized engineer assigned by the occupant to supervise the construction of the formwork structure must be involved as much as reasonably possible; the measures necessary to ensure that the formwork structure is constructed in accordance with the design of the specialized engineer who designed it; and 8 WSH (Building Code) Regulations 58 (1) 9 WSH Regulations (Construction) WSH Regulations (Building) 63 (3) 31 Jan 2013 OSHD /OSHI/MI046 Formwork Page 3 of 9 2 Formwork Structure Design 6 All formwork structures (including, but not limited to, beam, ceiling, wall, column, overhang, curved and inclined formwork) shall be able to withstand the total dead load. Live load and impact load with a minimum safety factor of 2. 4 Safety factor 2 7 A professional engineer shall be responsible for the design of a formwork structure which: – supports a casting plate or casting beam with a thickness of more than 300 mm; – more than 9 m in height; or – built in 2 or more levels. (Schedule A) 8 A specialized engineer who designs the formwork structure shall, where reasonably practicable, take the necessary measures to ensure that its design can be carried out safely by any person who constructs or uses the formwork structure in accordance with its design. 5 9 The design of the professional engineer should include, but is not limited to, the following considerations: – vertical and horizontal formwork components; – the members of the Management Board; -Connections; and – support on which the formwork rests. The formwork structure should include all sides, corners and elbows that support the concrete to be poured. Bracing and clutch details should be included in the design to ensure clarity. (Appendix B) Formwork construction with bracing and coupling details. 10 The specialist engineer who designs the formwork must also provide each person who constructs the formwork with all design documents, including all relevant calculations, drawings and construction methods (assembly, dismantling and relocation) to facilitate the proper assembly and dismantling of the formwork structure according to its design. Drawings of the formwork structure should also include 7 safe access routes and escape routes for workers involved in formwork. Formwork structure.

These must be clearly indicated on the subscription plan. 3 WSH (Risk Management) Rule 4 4 WSH (Construction) Rule 58(2), SS 580: WSH (Construction) Rule 64(1a) 6 WSH (Construction) Rule 64(1b) 7 WSH (Construction) Rule 58(3b) 31 Jan 2013 Formwork OSHD/OSHI/MI046 Page 2 of 9 Formwork used and constructed for poured concrete requires special considerations. Due to the large weight that concrete adds to formwork and shoring equipment, it is important to check if there are eccentric loads on rods designed for such a load. If single-pole benches are used on top of each other (graduated), additional shoring requirements must be met. Banks must be: 8 Annex C Corroded formwork components used Corroded formwork components painted to mask corrosion 31 Jan 2013 Formwork OSHD/OSHI/MI046 Page 8 of 9 Occupational health and safety specification for construction contracts 30 November 2012 (draft) Comments on this standard can be completed until 08 November 2012 (draft). February 2013 to be submitted to: The Director General`s national formwork used in on-site casting operations must be carefully planned, designed and inspected. Here is a list of guidelines and requirements for cast formwork: When it is time to remove the formwork, follow these recommendations: Drawings or design plans should include any revisions to the jack layout, details of shoring equipment, work decks, scaffolding and any other related accessories. Once all these details are designed, the shoring equipment must be checked prior to assembly to determine if the equipment meets the requirements set out in the formwork drawings. Do not use shoring equipment that could be damaged or show signs of damage. All formwork shoring equipment must be inspected immediately before, during and immediately after concrete installation.

Carefully inspect all components and strengthen them immediately if you find weakened equipment. It is extremely important to check that all base plates, earth heads, extenders and screws are firm and fixed with the foundation and mold. SG4:10 Prevention of falls caused by scaffolding Collective fall prevention www.safetyaccess.co.uk NASC Safety Guidelines SG4:10 Prevention of falls in scaffolding Management guide Published in November 2010 The bottom formwork used in the construction industry must be designed, manufactured, erected, supported, stretched and maintained in order to be able to withstand all vertical and horizontal loads that are exerted. Here are the safety precautions to be observed when handling formwork. 1 January 31, 2013 To all contractors, suppliers, installers, designers of formwork structures and all other interested parties Circular on safety requirements for formwork structures Two workers were killed during the concreting of a formwork structure during the concreting of a slab 23 m long, 8 m wide and 1 m thick connecting the existing east-west line to the downtown line at the Mr. Bugis station, Collapsed. The accident also caused minor injuries to eight other workers. During the concreting work, 19 workers were deployed to perform concreting work on the formwork structure, while the two deceased workers were deployed under the formwork to monitor for leaks and signs of weaknesses in the formwork structure. The formwork structure collapsed when the concreting was almost complete. 2 MOM is intended to remind industry stakeholders of the key requirements related to the safe design, construction and use of formwork structures set out in the WSH Regulation (Construction Regulations) and the WSH Regulation (Risk Management). Risk management 3 Before starting work, the person responsible 1 carries out an assessment of the safety and health risks that exist for each person who could be affected by his or her company in the workplace.

2 4 The risk assessment should cover the following areas, but these should not be limited to: – procedures for assembling, converting and dismantling formwork structures, – basic support capacity; – stability of the formwork structure – placement of reinforcing steel; – concrete pouring; – working at heights; – formwork monitoring; – formwork leakage; – structural failure of the formwork; – settlement of the formwork structure; – repair of the formwork structure; -Escape; and – contingency plan. 5 All reasonably practicable measures must be taken to eliminate a foreseeable risk arising from the work to be performed. If it is not possible to eliminate the risk, safe control measures and work procedures must be implemented to minimize and control the risk. 3 1 The employer, the self-employed person and the client may be liable. 2 WSH (Risk Management) Rule 3(1) 31 Jan 2013 Formwork OSHD/OSHI/MI046 Page 1 of 9 The adjustment of banks to a single pole to lift the formwork cannot be done after the concrete has been installed. Relocation must be established when the original shapes and banks are removed, when the concrete has to withstand loads that exceed its capacity. 4 Concreting – is safe for its intended use if it is fully constructed and, if so, issues a certificate attesting that the formwork structure is safe for its intended use Any responsible person who carries out work, including the assembly and dismantling of the formwork structure, the installation of steel reinforcement or concrete work, is reminded to carry out a thorough risk assessment of its work processes and take the necessary preventive measures to ensure that their business can and will be carried out. sure.