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Abstract. Physical barriers may hamper persons with disabilities (PWDs) movement in built environment. The needs of physical barrier-free environment are internationally acknowledged. This study explores the Malaysian scenario on access and facilities for PWDs by reviewing relevant legislation and guidelines, and literatures that examined the access and facilities provided in public buildings. This study identifies that Malaysia has plays its roles by establishing the relevant acts and legislation on PWDs needs and requirements. Nevertheless, previous studies on PWDs in Malaysia, demonstrated that there are still lacking on the implementation of the practice towards the acts and legislations. This study suggests that the application of the acts and legislation should be comprehensive covering all types of public buildings in Malaysia. In addition, enforcement by the local authorities and government agencies is crucial in order to successfully creating a barrier-free environment for all.

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Purpose This paper aims to assess factors that affect carbon sequestration on green roofs. Design/methodology/approach The most current academic literature related to carbon sequestration and green roofs carbon sequestration performance was reviewed. Findings Factors affecting carbon sequestration were discussed and classified into the following factors: plants, physical and maintenance factors. The authors’ findings are significant because they can be used to optimize green roofs performance for carbon sequestration. Originality/value Factors affecting carbon sequestration will optimize intensive green roofs performance.