CSiRebar is an app that conveniently converts between combinations of bar sizes, steel area, and spacing requirements. Application/Usage: • Convert between combinations of bar sizes, steel area, and spacing requirements • Select the required combination of bar sizes and spacing for given conversions using ASTM, Metric or Imperial standards Target Users: • Structural and civil engineers who need to view and select from various reinforcement layouts for a given criteria during member design • Structural and civil engineers who need to quickly get the area of steel provided in a given section during member analysis Key Features: • Generate many reinforcement layouts • Provide ability for combined reinforcement layouts • User-defined rules for bar selection • Provide several bar options for user-defined range Key Input: • Area • Bar size • Number of bars • Bar spacing • Combined reinforcement layouts Key Output: • Area for given reinforcement layouts • Reinforcement layouts for given bar options and spacing requirements • Alternative reinforcement layouts for given layouts