Steel transmission structures and catenary bridges. (1914)
Archbold-Brady Co. · Archbold-Brady Co. · leaf 5
TH THE A FRAMES AND LACEDCHANNEL POLES are stiff enough so that thereis no difficulty in stringing the wires yet are so de-signed that in case of broken conductors they willbend and twist, relieving the strain without per-manent distortion. On page 4 is shown an AFrame, tested by twisting nearly… … 00 Anchor Towers -is safer froman operating standpoint thanone built throughout with stifftowers which not being clastic cannot relieve themselves underthe strain of broken wires andfail, or which, if the foundationsyield slightly, collapse. ()ur Structures are made ofangles and plates of a…
