Caption says, "5-AL-488. Concrete surface series. Specifications No. 1374. Right inlet transition wall of siphon at Station 971-26, Altus Canal. This concrete contained air entraining agent.
Caption says, "5-AL-376. Specification No. 1133. View showing the placing of concrete for a wing wa...
Caption says, "5-AL-447. Specification No. 1180. Placing concrete by use of transit mixer in 3 foot...
Caption says, "5-AL-375. Specification No. 1133. View showing the placing of concrete for a wing wa...
Caption says, "5-AL-490. Concrete surface series. Specifications No. 1179. View of concrete section,...
Caption says, "5-AL-489. Concrete surface series. Specifications No. 1133. View of concrete section,...
Caption says, "5-AL-86 Specifications No. 1085, Altus Canal. View showing section of concrete sipho...
Caption says, "5-AL-481. Specification No. 1133. Elevated view of 2.75 foot by 2.75 foot concrete bo...
Caption says, "5-AL-480. Specification No. 1133. View of 2.75 foot by 2.75 foot concrete box siphon ...
Caption says, "5-AL-465. Specifications No. 1179. Completed siphon transition showing air entrained...
Caption says, "5-AL-659. Specifications No. 1374. Placing concrete in barrel section of six by six b...
Caption says, " 5-AL-110. Specifications No. 1085. View of concrete placing operations on left inlet...
Caption says, "5-AL-366 Specifications No. 1133. Workmen placing concrete in outlet-transition wall...
Caption says, "5-AL-365 Specifications No. 1133. Workmen placing concrete in outlet-transition wall...
Caption says, "5-AL-569. Specifications No. 1374. View looking downstream showing forms and concrete...
Caption says, "5-AL-506. Specifications No. 1374. General view, looking downstream, of 7'x7' concret...
Caption says, "5-AL-376. Specification No. 1133. View showing the placing of concrete for a wing wa...
Caption says, "5-AL-447. Specification No. 1180. Placing concrete by use of transit mixer in 3 foot...
Caption says, "5-AL-375. Specification No. 1133. View showing the placing of concrete for a wing wa...
Caption says, "5-AL-490. Concrete surface series. Specifications No. 1179. View of concrete section,...
Caption says, "5-AL-489. Concrete surface series. Specifications No. 1133. View of concrete section,...
Caption says, "5-AL-86 Specifications No. 1085, Altus Canal. View showing section of concrete sipho...
Caption says, "5-AL-481. Specification No. 1133. Elevated view of 2.75 foot by 2.75 foot concrete bo...
Caption says, "5-AL-480. Specification No. 1133. View of 2.75 foot by 2.75 foot concrete box siphon ...
Caption says, "5-AL-465. Specifications No. 1179. Completed siphon transition showing air entrained...
Caption says, "5-AL-659. Specifications No. 1374. Placing concrete in barrel section of six by six b...
Caption says, " 5-AL-110. Specifications No. 1085. View of concrete placing operations on left inlet...
Caption says, "5-AL-366 Specifications No. 1133. Workmen placing concrete in outlet-transition wall...
Caption says, "5-AL-365 Specifications No. 1133. Workmen placing concrete in outlet-transition wall...
Caption says, "5-AL-569. Specifications No. 1374. View looking downstream showing forms and concrete...
Caption says, "5-AL-506. Specifications No. 1374. General view, looking downstream, of 7'x7' concret...
Caption says, "5-AL-376. Specification No. 1133. View showing the placing of concrete for a wing wa...
Caption says, "5-AL-447. Specification No. 1180. Placing concrete by use of transit mixer in 3 foot...
Caption says, "5-AL-375. Specification No. 1133. View showing the placing of concrete for a wing wa...