Chittenden prices the complete crane and bulkhead trial

The operational test exceeds the working load-radius product

The revised crane specification requires working duties of 51,000 lb at 38 ft and 15,000 lb at 60 ft. Its operational test uses 53,000 lb at 40 ft: raise the weight 25 ft, swing towards the slot guards, lower it to within 6 ft of the water and hold for five minutes. The stated load-radius products are 1.938 million and 2.120 million lb-ft, a 9.4% increase for the operational case. This comparison covers suspended load and radius; crane self-weight and the other structural loads enter foundation design separately. Amendment R0004 also changes the overload-test radius from 68 ft to 60 ft. That trial uses 110% of the selected crane's rated capacity at 60 ft, with a ten-minute hold and two boom positions. The supplier's quotation and the test plan need the same revised load chart.

Fabrication measurements determine the installed seating trial

The crane trial moves the bulkhead above the water. Section 35 20 16.53 then requires a seated, watertight barrier under normal operating-pool hydrostatic pressure, followed by at least three complete storage-frame cycles. The bearing plates have a 0.015 in alignment requirement against the specified control planes; wheel coplanarity has its own 0.005 in limit. Revised drawing SR101 requires field verification of recess dimensions before plate fabrication. Slot clearances are checked before grouting. These measurements allow fit corrections while the plates and recesses remain accessible. A mismatch discovered during final seating brings the fabricator, crane crew and lock access back into the same work window. The estimate therefore needs a pre-fabrication survey and a pre-grout inspection alongside the final demonstration.