Building design & structural engineering Commercial Retail strip centers, detached single shops, tenant improvements, cellular site - building retrofits, towing co garages. Complete building design takes a lot of time and effort, not to mention knowledge. At EW-Webb Engineering, we are highly skilled in all aspects of commercial structural engineering. From planning for retail strip centers, detached single shops, tenant improvements, cellular sites, towing company garages, to building retrofits, we have the experienced staff to accommodate any design needs that are necessary to get your project off the ground.