•kin // /mm/a/i, J/rm Jlixl' CJ! 



Apr,/ //"M// 



H A Y L E Y 

 WOOD 



LONGITUDINAL SECTION 



T & S Canal Tunnel. 



CROSS SECTION FOR ARCHING CROSS SECTION FOR ARCHING 



N LOOSE ROCK. 

 N°2. 



CROSS SECTION FOR ROCKING 



N°3 



-Jlxrmllim' ,/o 

 At 2f* tftafimrf /trim 



CROSS SECTION FOR TRUNK FORMING 



N°4 XX .iin l,D[i«iliiJin;il Scdmii! 



SCALE 8 FEET TO THE INCH. 



i/tMA Ssusits.ltrti GioiiCESrE/f 



