During new product development, knowledge must be exchanged across organizational, geographical, cultural, and language barriers [1] -- Emerging technologies such as Product Lifecycle Management (PLM) combined with Business Process Modelling (BPM) tools provide means to enable collaboration among distributed participants specifically in the product design process -- In this paper, an alternative approach for planning and development of projects that requires knowledge management and information integration in small and medium enterprises, is presented -- A case study in the Architecture Engineering and Construction (AEC) industry is performed and, as a result, the methodology is applied to support the design and construction of waste treatment plants -- Finally, the design of the proposed approach is presented including how engineering processes were identified, analyzed and improved through BPM and PLM