་

AN

ELEMENTARY

AND

PRACTICAL TREATISE

ON

BRIDGE BUILDING,

AX

ENLARGED AND IMPROVED EDITION

OF THE AUTHOR'S ORIGINAL WORK,

BY

S. WHIPPLE, C.E.

ALBANY, N. Y.,

INVENTOR OF THE WHIPPLE BRIDGES, &C.

SECOND EDITION, REVISED AND ENLARGED.

NEW YORK:

D. VAN NOSTRAND, PUBLISHER,
23 Murray St., and 27 Warren St.

1873.