82 Papers connected ivith the Construction No. 31 



shore and the shipping at Madras and the public at large, to decide if, in 

 Vhe projected work, the requisites of efficiency, stability and durability 

 are sufficiently ensured. 



the 21st of December 1843. 



(Signed) P. DUVAL PIRON, 



Chief Engineer at Pondicherry, 



SPECIFIC A TION of a Wrought Iron Pile Pier to be 

 erected at Madras. 



GENERAL DESCRIPTION. 



The Pier to extend at right angles to the Beach from a line 

 beyond the reach of the surf, to the distance of nine hundred feet 

 seawards. 



The roadway to be fourteen feet above spring tide level, thirty 

 feet in width, and supported on three parallel rows of wrought iron 

 piles. 



The Pier to be terminated by a platform, eighty-four feet in length 

 forty-two feet in width, and raised to the same level as the rest of 

 the Pier. 



Four double cranes to be placed upon the Pier head, for loading 

 or discharging lighters or. launches ; two railways to be established 

 from these double cranes to the other end of the Pier, and the cover- 

 ing planks of the entire Pier to be secured on the transverse beams 

 leaving between them a space of one inch, or one inch and a half. 



Foundation. — This is to be formed of wrought iron piles five 

 and half inches in diameter. They are to be of round Iron, spaced 

 eighteen feet longitudinally, and fourteen feet transversely from 

 centre to centre. These piles to be driven into the ground from 1 

 nine to twelve feet and to be lengthened as the water deepens, so i 

 that each part of the Pier shall stand at a uniform height of fourteen 

 feet above spring tide level. 



Cast Ikon Collars. — Along each pile and at an equal distance, 

 cast iron collars to be fitted and keyed. These collars to be two 



