Concrete Roads
and Their Construction

102 CONCRETE ROADS The cost per sq. yard, of pavement only, for the above three streets worked out at 10s. and 9s. respectively. In addition to the roads above described, it is interesting to note’the other works done to the end of 1919, as scheduled in the accompanying table. Name of Street. Length in Feet. Area in Square Yards. Thick- ness in Inches. Cost per Sq. Yd., Pave- ment only. Date of Comple- tion. Remarks. Market Roads . 640 1,340 7 8/- Mar., 1918 Untreated. Exchange Lane . 140 155 5/3 Dec., 1917 Untreated. Quay Street Ex- tension 530 3,828 8 9/- Mar., 1918 Untreated. Intersected by railway sidings. King’s Wharf Rd. 605 2,351 8 9/- May. 1918 Untreated. Intersected by railway sidings. Beach Road 1,896 12,801 8 — May. 1919 Double-track tramway. Anzac Avenue . 2,347 9,909 8 Under con- struction in March, 1919. Symonds Street. 3,100 13,427 8 — Sept.,1919 Double-track tramway. Total length, 10,453 ft. Total area, 49,372 sq. yds. In addition to the above an area of over 2,000 sq. yds. in Pitt Street, on which trial lengths of proprietary bituminous pavement had been laid on a 6-in. concrete foundation and had failed, was surfaced on the old concrete foundation with a rich concrete (3 to 1), half of the area being an average thickness of 3 in. and the remainder 3J in. This was only completed in March, 1919. Note.—The prices paid for labour and materials were as fol- lows : Labourers 10s. Id., finishers and machine men Ils. Id. per day of 8 hours ; cement delivered 50s. per ton ; basalt chips and screenings 10s. 3cL, basalt road metal, 2^-in. gauge, 9s. id., and sand 10s. lid. per cu. yard. Dealing with the question of concrete mixing, Mr. Bush expresses himself strongly in favour of machine mixing. Regarding joints he adopted the use of tarred paper, folded