Carpentry Made Easy: Or, The Science and Art of Framing, on a New and Improved System

12 feet 12 inches altitude arch beam Balloon Frames base beam bridge Bill of Timber blade bolts bridge building Carpentry centre chord pieces circumference common rafter corner counter braces cripple stud cross timbers diagonal width diameter distance divide edge equal angles feet long find the length foot girder given half the width hence hip rafters hip roof hypotenuse inch mark inch Rise inches square inches wide interior angles intersection jack rafters lower chord lower end bevel main braces manner mortice multiplied opposite parallel parallelogram perpendicular polygon principal rafters proportion Proposition purlin plates quantities rafter table rectangle represented ridge pole right angles right-angled triangle rules Scholium secant line shoulder side bevel sills span spiked spire square root straining beam stringers supporting rods tenons Theorem tie beam tongue upper chord upper end bevel upper joists weight