BSI - BS 227
H-Section Steel Arches for Use in Mines
|Publication Date:||11 December 1970|
|ICS Code (Mining and quarrying):||73.020|
|ICS Code (Steel profiles):||77.140.70|
Materials, physical properties of sections; identification marking of arches; 2- and 3-piece straight-legged and splay-legged arch shapes; joints, fish plates, bolts; preferred arch sizes; mass, dimensions of standard sections.