Depth or height of the arch is the________________? A. perpendicular distance between intra-dos and extrados B. vertical distance between springing line and intrados C. perpendicular distance between springing line and extrados D. none of the above

Single flemish bond consists of___________________? A. double flemish bond facing and Eng-lish bond backing in each course B. English bond facing and double flemish bond backing in each course C. stretcher bond facing and double flemish bond backing in each…