The existing counterweight on the 7B conveyor had a winch system with inadequate lug connections and was rigged at an improper angle, which created structural integrity issues. Bowman prepared an economic trade-off study and general arrangements for counterweight lifting methods.
The client was looking for a safer and more efficient way to transfer ore to the main course ore bin. Bowman produced general arrangements and mechanical drawings for the project.
Project objective was to evaluate existing capacity of ceiling beams for trolley and hoist system designed to remove and install belt feeder motors to a roof opening area. Bowman provided a load rating and lifting plan for the belt feeder motors.
Bowman provided engineering services for a construction drawing package for access road grading and drainage improvements. The haul roads were severely damage during storm events so collection, conveyance channels, sediment traps and culverts were designed to manage a 25-year, 24-hour storm event.
Based on previous wash settler design experience, Bowman was uniquely qualified to do a feasibility study (FS) design for a new solvent extraction (SX) plant at a different operation for the Sierrita Mine. The project required a closely coordinated team of process, mechanical, civil, structural and electrical engineers.
Bowman provided construction engineering services. Because of changes in the planned use of the AB-BC Tailings storage facility, the diameter of the slurry distribution pipes were reduced from 18” to 12”. This and other changes were implemented in the pump set ups. These changes resulted in overall improved decant system efficiency.
Topographic survey, civil site design, construction services, and construction staking for a new district vehicle support facility on a 26 acre site. The facility has concrete parking for 200 buses, a warehouse and District support and training building.
Twenty-eight acre site for construction of new district office, warehouse, bus facility and 4000 LF of half street improvements for a major arterial roadway. We provided civil engineering design services for Durango Road, which included paving, sewer, and public water.
This project involved topographic survey, new sewer design to replace existing septic system and complete onsite and offsite civil design services, including grading and drainage, domestic water, private fire line, 4 tennis courts, 2 large parking lots, 2 bus drop-offs, all weather running track, football, baseball and softball fields.
Provide code consulting and fire protection design services for this 3,000-seat auditorium designed by Frank Lloyd Wright in 1964. The building is listed on the National Register of Historic Places and, as the last publicly commissioned building designed by Wright, it is architecturally and culturally significant to Arizona.