27 



Oal-c^. 



J^U- ff^ 



-^TWli- 



Section of Tiej, 

 in Trial No. 1. 1 



m. 



Yautherin 



I 



i;^^ lron-88lhs. 



Vuui7zerii 



n 



i;^^ Iroiv'104V)s. 



^ 



Haoirmanri^ 



HI 



Milcl Steel : 110 11) i 



^ 



Hcwimi 



IV 

 iJ/zZcZ SteeV114Thi 



VaiA-tfieriiv JLiahthanvmen 



a 



Pressed. 



T 

 iLTiM SUeV-SS.dlJbs. 



Pressecl. 





2) 



Strerifjfthened-. 



^ 





YII 



U^ 



n A B C B 



Stren(jiJverce6U 



YQI 



Fo3t. 



P08t. 



DEVELOPME^IT AND TYPES OF THE "POST" TIES. 



