Knergy has sucessfully completed structural engineering projects to ensure safe design and design cost optimal structures for both green and brown field environment such mill buildings, crane runways, concrete foundation, material process bins and above ground tanks. Structural software used for analyses and design are Staadpro, Risa, SAP 2000 and ANSYS. Usage of Commentary L of Canadian Building Code was derived by Knergy's staff for brown field structures so as to give an economical solution which is within code requirement for continued operation.