A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 281
and otherparts should have handholes located at such points that thecondition of the plates and stays can be readily seen. DESCRIPTION OF BOILERS. 133. Boilers containing tubes are divided into two chiefclasses. Those which have the hot gases passing throughthe tubes are called flre-tnbe hoileis,… … Fig. 46.
Architecture · Building
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