Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 317
to to secure stability. 8. Let us consider as in Art. 2 a slice of retreat within the arch ring, thus distribut- ing the thrust a little more uniformly over the arch 1 unit thick. In Kg. 7, let Q,= the joint. Suppose the centre of an arch the horizontal thrust (compare Fig. 3 struck as soon as it… … C A on joint at A ; a=horizontal distance Shaving off the upper parts of the joints from A, the centre of pressure on the joint, near the crown would tend to counteract to the vertical passing through the centre this. of gravity, P ; A=vertical distance between Dr. Schemer thinks that, for good…
Engineering
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