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. I [I I I I I I 1 II fl ] - ~ I I II I I Simons, Li and Associates, Inc. Job. No. 6143J002 Project: Portland Flume Reconstruction Structure No. 6P - (Sta. 8 + 941: It appears that the align- ment of the flume will be shifted approximately 4 feet north and deepened approximately 5 feet at this location. It appears that this structure will require temporary support and possibly some type of Bermanent underpinning, particularly along the west end, due to the deepening of the flume at this location. Several methods appear to be feasible for this structure. The concrete and stone basement/stem wall will probably require some lateral support. Structure No. 7P - (Sta. 8 + 14):. It appears that the align- ment of the flume will be shifted approximately 4 feet north and deepened approximately 4 feet at thi~ location. Due to the shallow stone footing present under this structure, it appears that temporary support will be required. It is doubtful that the stone foundation will clear span any reasonable distance, therefore, some type of carrier beam will probably be re- quired. Structure No. 8P - (Sta. 7 + 30): No temporary support should be required for this structure due to its distance from the proposed new flume wall. The concrete slab adjacent to the south end of the building is close enough to the proposed alignment that it may require some support. Structure No. 9P - (Sta. 2 + 65): No temporary support should be required for this structure due to its distance from the new proposed alignment. Structure No. lOP - (Sta. 1 + 95) and Structure No. 11 P - (Sta. 1 + 50): It appears from the proposed alignment that the new flume will be located from 10 to 15 feet north of the -11-