Plain concrete for farm use, farmers' bulletin no. 1279
A 1922 Farmers' Bulletin from the U.S. Department of Agriculture instructing farmers in mixing, forming, and pouring plain concrete for walls, floors, and foundations. The line drawings are axonometric diagrams of board formwork, braces, and studs with dimension callouts for lumber sizes, bolts, and reinforcing rods, giving designers clean isometric construction geometry and hand-lettered technical annotation.
