Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 466
irs ; these for the equilibrium of the stone it is im- will all be normal to the joints at which material at what point of the stone the they act, and the resultant of such forces force P is supposed to act, and x may have at each joint will, therefore, also be nor- any value that the depth of the… … exact position of the resultant line of thrust of an equilibrated arch. This stone is in is an indeterminate problem. equilibrium under the action of three forces, viz. : The pressures at the joints Consideration of an arch with friction between collected into their resultants, P and Q, the…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
