You can refer to the Singapore Standard SS569: 2011 (Code of practice for manual handling).
The Code of practice serves as a reference standard for acceptable practices for manual handling in Singapore. It also provides recommended lifting limits, which depend on load and task variables.
Singapore Standards are a set of specifications, guidelines, codes of practice, test methods or management systems that are designed to enhance the market acceptance, innovation, quality or sustainability of the materials, products and services that companies and public use every day. Many organisations in Singapore are involved in the development and promotion of standards.
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