International Journal of Engineering Research in Africa Vol. 65

The 65th issue of the journal includes articles that describe the latest research results in 3D printing, anaerobic digestion of solid municipal waste, analysis of building seismic performance, properties of bio-based insulation material, and soil properties for geotechnical works. There are also designed floating photovoltaic panels, and control systems for hydroponics and analyze means for equipment efficiency improvement through a lean approach in small and medium enterprises. This volume will be helpful to many engineers in machinery, manufacturing and construction.