TTSD-1900 Spiral beams with zero total rise show bending line, radius and angle when unfolded in drawings. Development area: Modeling Included in Fixed defects in version 2018 Quick feedback Did you find what you were looking for? * Yes Partly No What is missing? The feedback you give here is not visible to other users. We use your comments to improve our content. Need support? Fill in this form instead. Leave this field empty We use this to prevent automated spam submissions.