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Engineering design of buildings has many aspects need to be tackled, two mentioned above are core engineering designs, both share responsibilities and require strong collaboration for a practical design, i have not observed a good level of collaboration between the two till now at any project.I could not find reliable geotechnical engineers who could tackle geotechnical issues with geotechnical grounds, solutions are developed in reports but not in actual in field, mostly a driller gets the data of bore log and a jr geologist or geotech technician categorize the soil and a bearing capacity value is mentioned in geotech report by the geotechnical engineer, there are very few soil labs which process samples properly. Client do not understand the importance of geotechnical investigation and in many cases builder or client insists that use nearby area soil report for there plot, and if they agree the go for minimum quoted vendor, and vendor develops report without going to the site or if he performs investigation, he doesnt check plan, he just one or two bores without any proper sampling and SPT and thats it. Geotechnical investigation is most important of engineering design, building sits on it for years (minimum 50 years) thats what building codes specify life of building.Structural engineer take one value bearing capacity and design the foundation, there is very little usage of soil structure interaction. Proper investigation can save the cost or make the building safe if cost is not saved, risk is eliminated, which otherwise could produce severe losses of lives and buildings.In some areas developers developed land with more than 40 to 50 ft of fills, non-engineering, uncategorized, and plots are sold. This is purely geotechnical issue which is tackled by structural engineers with heavy structural foundation costs. Unsustainable approach towards design, every engineering discipline can tackle his problems better, so let the geotechnical engineers develop techniques and stabilize the foundation soils. A sick person can not live happy life on medicines or drugs, he needs to tackle sickness by eliminating causes, with injections its not possible, so structural engineers needs to stop prescribing injections.Collaboration during design and construction can save a lot. Economic crises is on steep up so need to improvise our practices.P.S. there are other engineering discipline and duly regarded, MEP, Environmental, all are equally important and engineering works are team works no single person can practice as engineer, he needs to interact with others.