ATLANTA--(BUSINESS WIRE)--Kahua, the premier Platform as a Service(PaaS) project management and collaboration solution, announces the successful completion of a large scale business process and workflow reengineering project with Clark Construction Group, LLC. With more than $4B in annual revenue, Clark is one of the largest general building and civil contractors in the United States. The company embarked on a study of its business processes with the objective of dramatically reducing costs whi