Sessional_Paper_1899 — Page 158

Appendix I.

155

8. FIELDING ROAD,

WEST KENSINGTON, LONDON, W., September 7th, 1898.

SIR OF GENTLEMEN,-Herewith enclosed I send Specification for a Refuse Destructor for Hong- kong and should be glad to receive plans, sections and tender from you.

As stated in the Specification, it has not yet been decided to erect a Destructor, but I am now reporting on the matter and purpose attaching such plans, sections and tenders as I may receive to my report.

Should you decide to tender I should be glad to receive same with all particulars, 'plans, &c., by November 1st.

Yours faithfully,

J. R. CROOK,

Executive Engineer, Hongkong P.W.D.

Copy sent to-

Messrs. GODDARD, MASSEY & WARNER, Nottingham.

THE BEAMAN & DEAS SYNDICATE, LD., 32, Victoria St., Westminster. Messrs. MANLOVE, ALLIOTT & Co., LD., Nottingham.

THE HORSFALL FURNACE SYNDICATE, LD., Leeds.

Proposed Refuse Destructor

FOR

THE CITY OF VICTORIA, HONGKONG.

General Specification.

1. The site will probably be on a hillside, but for the purposes of this tender it may be assumed to be level, with a hill at the back where an inclined road may be cut to the level of the top of the furnaces. The whole of the works should, if possible, be arranged on a site 300 ft. long by 100 ft. broad, but additional length may be obtainable.

2. The works must provide for the disposal of 90 tons of refuse per diem. This refuse is of poor quality consisting of vegetable matter and cooking refuse, road sweepings from Macadam roads (there is no horse manure in this), rattan shavings, paper, rags, &c. There are no ashes in the refuse.

Forced draught should be provided and particulars should be given as to whether it is proposed to use a steam jet or fan.

3. The Destructor will be required to work continuously, but may be shut down perhaps twice a year. Arrangements must be made by which any of the furnaces may be shut off for repairs without stopping the rest. The works must also be so designed that steam can be constantly supplied, and to ensure this, the boilers should be in duplicate.

4. The flues and chimney must be so arranged that the boilers may be kept constantly working, even though all the destructor furnaces be shut off, and space must be provided for additional furnaces in the proportion of 30 °, of the number now considered necessary.

5. The boiler shall be sufficient to supply 100 H.-P. and shall be in duplicate. Such buildings shall be arranged and tendered for as are considered necessary to cover the furnaces and boilers.

The position of a separate building should also be shewn on the site, to accommodate two 50- H. P. horizontal engines and two dynamos supplying 30 H.-P. each, but no tender is asked for this building or for the machinery.

6. In designing the destructor buildings, chimney, &c., it must be borne in mind that the Colony is visited annually by typhoons; everything must therefore be of the most substantial character,

All exterior walls of buildings shall be not less than 14-in. thick.

Roofs must be securely fixed to the walls and must project as little as possible beyond them. The usual local roof covering is double roll and pan tiles.

7. The dust carts for collecting the refuse contain about 2 cubic yards each, and are drawn by manual (coolie) labour. The incline to top of furnaces should not be steeper than 1 in 20 and a sum of Thirty Pounds (£30) may be allowed for constructing same.

Arrangements should be made to avoid a double handling of the refuse at the works, either by dumping it directly from the carts into trucks, as in Boulnois' and Brodie's charging apparatus, or by some similar scheme.