| Shock load | (Environmental Engineering) Influent wastewater entering the plant which has an unusually high organic content and/or high flow rate. |
| Architectural design - | an activity that attempts to layout the module "floor plan" for the software |
| Estimation - | (Software Engineering) a project planning activity that attempts to project effort and cost for a software project |
| Extreme programming - | (Software Engineering) an agile process model that emphasizes scenario-based planning, incremental delivery, refactoring, pair programming and continuous testing. |
| Functional decomposition - | (Software Engineering) a technique used during planning, analysis and design; creates a functional hierarchy for the software |
| Project Plan - | (Software Engineering) a description of the management approach for a project |
| Project planning - | (Software Engineering) the activity that creates the Project Plan |
| Risk Management and Monitoring Plan (RMMP) - | (Software Engineering) a plan for mitigating, monitoring and managing risks |
| Test plan and procedure - | (Software Engineering) a description of testing strategy and tactics |
| Plane of Weakness | (Concrete Engineering) The plane along which a structure under stress will tend to fracture; may exist because of the nature of the structure and its loading, by accident, or by design. |