“…IBS can be classified into six main categories which are; pre-cast concrete system, steel framing system, timber framing system, block work system, formwork system, and innovative system (CIDB, 2016;Din et al, 2012). There are many advantages of using IBS reported by researchers worldwide (Alinaitwe et al, 2006;Bhattacharjee et al, 2016;Blismas et al, 2006;Gibb & Isack, 2003;Goodier & Gibb, 2007;Hanafi et al, 2015;Haron et al, 2009;Hung et al, 2015;Jabar et al, 2013;Lou & Kamar, 2012;Majid et al, 2011;Na & Roger, 2008;Polat, 2008;Samari et al, 2012;Zhang et al, 2018). These advantages are more significant for adopters in terms of cost and time certainty, improving building efficiency and productivity, reducing workplace safety and health hazards, alleviating skilled workers' issues and reliance on manual foreign labour, and achieving the ultimate goal of reducing overall construction costs.…”