THE TUNNEL.

Lyttelton Times, Volume XXXI, Issue 2608, 14 May 1869, Page 2

THE TUNNEL.

The following estimate of work required to be done in the tunnel is appended to Thornton’s report dated May 3, whicn published on Monday, oni i From north end of brickwork at south ena of tunnel, fifty-eight feet of brickwork m the west side wall to support the roof ; &«■ ««* of west side wall might be constructed on s benching ten feet above level of rails. Fifty-eight feet on east side of same section might be benched ten feet above level of rails to l7& B n C and g a half chains from south eu j of tunnel, twelve feet of brickwork is reg in side wails and roof; At seventeen djuj from south end of tunnel and north end present brickwork is bow packed with timber. I recommend as much as posj lb ' Ss to be removed and filled up solid with br F«lyiVen chains ten on east side is a ewe. Tbu “ buUt loose, and I recommend that * w j of of rabble or brickwork era - e height cave, eighty-six feet long, of «• w* of fifteen feet to support the g On the same section on the •mall cave which as the feet of brickwork by eight feet m ground hangs heavy * t j. e 00 rth end re-Fifty-five chains from tne

fuire a lew yards of soft rock taken out of and a halt chains from north .J Sd flat roof, sides are soft but not dangerous ; to I'ghten the sides may do by attending to it occasionally. Forty-one chains from north end , the south end of present brickwork requires an additional length of twelve feet m the roof. The sides might be benched to receive it. Forty chains from north end ; the present brickwork requires additional length of fortyone feet ia roof, and forty feet of wall on east side, and 20 feet on west side. Thirty-nine chains from north end a quantity o' rock requires to be taken down, as it Is loose and overhanging an( l a* part ot the tunnel will be considerably larger than required, by the removal of the loose rock, it will be necessary to support it with a brick wall fifteen feet high, by about eighteen feet In length on the west side of tunnel. Thirty-eight chains from north end ; thirty feet of wall on the west aide arched over to a bench on the east side required, as the east side is hard and will stand benching. Twenty-nine chains from north end, the rock is supported on drills bored into the side of the tunnel. Ihe rock here is very much shattered, but by careful removal of some of It, it might be rendered safe Twenty chains from north end ; a quantity of rock requires to be taken down, us it is hollow and overhanging. Seventeen chains from north end; eighteen feet of side-wall is required on east side, and twelve feet high. South end of brickwork at north end of tunnel would require bricking both sides and roof to the brickwork at the eighth chain, and from the south end of the brickwork at the eighth chain would require eighteen feet also, both sides and roof. Quantity of brickwork required : rjubic yards, 747, at 65s per yard ... ... ••• £2427 15 0 1000 cubic yards rock to remove for bricking at 75... 350 0 0 Centreing, scaffolding; ironwork for ditto 150 0 0 £2927 15 0