etc said spacer added engineering advantage to optimise the use of heavy cross section of building material used in prefabricated building construction the spacer can also served as a modular or pre cut physical building component which can be used as a development length or a connector for making long span of building components such as beam joist or rafter said spacer enables to modularise the physical building components as an assembly parts for easy handling and mobilisation preferably various shapes of the spacer such as rectangle square triangular or polygon wherein whose profile can be hollowed extruded or solid and can be used in modular wall panel of predetermined size preferably of 1 8 m u00d7 2 7 m 1800 mm u00d7 2700 mm to form u201c flexi shape u201d of angular or radiated wall accordingly the spacer can be served as an interlocking jigsaw piece 25 in method of playing with the modular physical building components to knit the armature of sub and super structure of prefabricated building structures the spacer may also tend to act as a shock absorber for any structural mechanisms of the building such as impact load lateral movement or floor vibration of the building structure the spacer used in modular wall panel creates slit between two sectional elements while joining at corner or.