The cover this week shows an intake gantry at the works on the Bonneville Dam, Tennessee, USA. The dam is part of a huge project designed fro navigational purposes, for the control of floods and for the harnessing of water for a hydro-electric power scheme.
The Victoria Falls Bridge (photogravure supplement)
Photogravure Supplement - 1
THE CENTRAL ARCHED SPAN of the Victoria Falls Bridge measures 500 feet. It is flanked by two straight spans of braced girders, that on the north bank being 62 ft 6 in long and that on the south bank 87 ft 6 in long. The arch is formed by two arcs side by side and inclined inwards. The main girders are 27 ft 6 in apart at the upper ends and 53 ft 9 in apart at the abutments.
Photogravure Supplement - 2
THE FINAL STAGES. The centre panels of the arch were completed on March 31, 1905. The ends overlapped by only 1¼ in, but when the engineers came to complete the work next day they found that contraction during the night had caused the ends to meet with precision.
Photogravure Supplement - 3
1,500 TONS OF STEELWORK were used in the Victoria Falls Bridge. The bridge was built at Darlington, Co. Durham, and assembled there in sections to ensure that every component was perfect. Then the sections were conveyed to the heart of Africa by sea and by rail. At one time there were 400 natives working on the bridge.