. Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools . Fig. 71. §137. TKESTLES. 169. , o o b c oo o a o o (&) a Fig. 72. (b) is bent and used as shown in Fig. 72 (a). Bolts passingthrough the bolt - holes ^T~Vi shown secure the platesto the timbers and makea strong joint which maybe readily loosened for re-pairs. By slight modifi-cations in the design the | ~method may be used for |^^inclined posts and compli- *cated joints. (d) Split caps and are described in§ 129. Their advantages apply with even greater force toframed
. Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools . Fig. 71. §137. TKESTLES. 169. , o o b c oo o a o o (&) a Fig. 72. (b) is bent and used as shown in Fig. 72 (a). Bolts passingthrough the bolt - holes ^T~Vi shown secure the platesto the timbers and makea strong joint which maybe readily loosened for re-pairs. By slight modifi-cations in the design the | ~method may be used for |^^inclined posts and compli- *cated joints. (d) Split caps and are described in§ 129. Their advantages apply with even greater force toframed trestles. (e) Dowels and drift-bolts. These joints facilitate cheap andrapid construction, but renewals and repairs are very difficult, itbeing almost impossible to extract a drift-bolt, which has beendriven its full length, without splitting open the pieces contain-ing it. Notwithstanding this objection they are extensivelyused, especially for temporary work which is not expected tobe used long enough to need repairs. —137. Multiple-story construc-tion. Single-story framed trestlebents are used for heights upto 18 or 20 feet and ex
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1913
