Development of an Efficient Steel Beam Section for Modular Construction Based on Six-Sigma

Table 10

Design requirements for each design factor of the MCO beam.

Design factor	Design requirement
Invariable section
Flange width	(i) Limit the flange width to less than the column width (column width: 125 mm or 150 mm); (ii) Require the minimum flat flange width (50 mm) to be connected to the wall stud
Radius of curved section	(i) Minimum radius of curved section less likely to cause a crack
Flange height	(i) Flange to thickness ratio is larger than 61 ( > (h − 61t)/2)
Welding length	(i) Prevent local buckling
Variable section
Thickness of steel plate	(i) Variable sections for variable floor loads and spans
Web height	(i) Variable sections for variable floor loads and spans; (ii) Able to penetrate pipes