river engineering (3 Ergebnisse)

First edition. Supported with copious figures, sections detail icebreaking, bar dredging, and other engineering work, as well as discussions for and against replacing the existing straight-line Taku Bar channel with a naturally sinuous channel. Also described is a three-week strike for higher wages by Chinese employees. "Connected with the sea by an artificial river, Tianjin's status as a seaport was heavily dependent on the continuous conservancy efforts of the Hai Ho and its tributaries" ("River Conservancy"). Formed in 1897, the Hai Ho Conservancy Commission focused on reducing flood risks and opening the waterway to shipping, for example by straightening the channel and thereby cutting the route to the sea by 17 miles. Its publications are generally rare, and this report is untraced institutionally. "River Conservancy and the Undetermined Future of the Port of Tianjin, 1888-1937", Open Rivers. Quarto. With 6 folding tables and graphs; tables in text. Original cream card wrappers, wire-stitched as issued, front cover lettered in black. Ink stamps of hydraulic engineer Claudio Marcello (1901-1969) on front cover and verso of one table; numbered label on front wrapper, couple of other notations. Wrappers with closed tear and vertical skinning, light foxing, generally clean internally: very good.

First edition. Alongside routine maintenance and scientific examination of the channel, in 1932 the commission supervised the laying of submarine cables to repair the International Bridge (captured in six photographic half-tones) and the experimental diversion of freshets to ease the risk of over-silting. "Connected with the sea by an artificial river, Tianjin's status as a seaport was heavily dependent on the continuous conservancy efforts of the Hai Ho and its tributaries" ("River Conservancy"). Formed in 1897, the Hai Ho Conservancy Commission focused on reducing flood risks and opening the waterway to shipping, for example by straightening the channel and thereby cutting the route to the sea by 17 miles. Its publications are generally rare, and this report is untraced institutionally. "River Conservancy and the Undetermined Future of the Port of Tianjin, 1888-1937", Open Rivers. Quarto. With 2 half-tone plates, 9 folding tables, charts in text. Original grey textured card wrappers, wire-stitched as issued, front cover lettered in black. Ink stamps of hydraulic engineer Claudio Marcello (1901-1969) on front cover and recto of one table; numbered label on front wrapper, couple of other notations. Wrappers and contents lightly creased, mark from paperclip at head of front cover: very good.

First edition of this rare and extensively illustrated proposal for increasing freight traffic and other commercial transport along China's second-longest river and building new port facilities at the mouth in the Bohai Sea. The valuable maps and plans show infrastructure and key locations along the river, as well as past and proposed improvements. Cui Shijie (1888-1970) was a government official in Shandong Province charged with regional economic development. Rivers were a core part of his vision for coastal and hinterland prosperity. He published his report four years after the devastating 1931 floods, when China's major water systems burst their banks and claimed the lives of up to 4 million people (the worst natural disaster ever recorded). The table of contents calls for two end plans that were seemingly not issued, as they are present neither in this copy nor in the copy held by the National Library of China. Quarto (255 x 175 mm), bound without author's portrait, title page, and 2-page preface. With all substantive illustrations, including 32 maps and plans (12 folding), 2 diagrams, tables in text. Text in Chinese. Contemporary blue card covers, traces of original spine, front cover lettered in manuscript. Red pencil underlining in text; old Chinese bookseller's annotated ink stamp on rear cover. Rear cover reattached, contents lightly and evenly toned, maps, plans, and diagrams well preserved: very good.