900 PACIFIC AVE WOMEN AND CHILDREN PAVILLION 2018-01-02 MF Import

i IProvidence Family Services Center 9-9�M�-�2�23-0 � August 25, 1999 P�e Z I • Structural Considerations: If a composite foundation system is utilized, as described above, the building will exhibit differential stiffness characteristics during I an earthquake. The project structural engineer should determine the design implications of this condition. A more-uniform foundation system could be created by supporting the entire building on variable-length piles/piers or by using spread footings in conjunction with a basement. • Floors: In our opinion, a soil-supported slab-on-grade floor would be suitable for , use at the southeastern portion of the building but would not be ideally suited for the � northwestem portion. For best performance,the latter portion should be supported on piles or piers. I • Retainina Walls: Backfilled concrete walls can be used for shallow below-grade portions of the building, as well as for loading docks and underground vaults. I • Shorina and Underninnina Considerations: If any excavations are performed adjacent to the existing hospital buildings, shoring and/or underpinning systems Imight be required. We can provide geotechnical criteria for structural design of such systems if necessary. • Ravine Setbacks: We recommend that the proposed building be set back at least 50 feet from the existing ravine brink. Pavements and utilities should be set back Iat least 15 feet for reasons of seismic stability. • Seismic Code Considerations: Because future stories might be added to the ( building, it could be advantageous to design the structural elements according to a future building cede. If so,we should be allowed to help develop appropriate design criteria. I • On-Site Soil Considerations: Because the on-site soils are moisture-sensitive and would be readily disturbed when wet, the contractor shouid instali appropriate I temporary drainage systems at the construction site and should minimize traffic over exposed subgrades. Ideally, earthwork would be scheduled for lhe summer and fall months, when drier weather will maximize the potential for reusing on-site Isoils and when groundwater levels will likely be at their seasonal low. 2.0 SITE AND PROJECT DESCRIPTION � The project site is an existing medical oKce building with adjacent parking lots located at the comer I of Pacific Avenue and Kromer Avenue on the west side of the existing Providence General Medical Center's Pacific Campus in Everett, Washington, as shown on the enGosed Location Mep I (Figure 1). This site consists of a roughiy rectangular parcel that measures about 230 by 480 feet overall and encompasses approximately 2%z acres. Site boundaries are generally delineated by S'SVORDPftOC'�99 Pio�ecis�5ean1e112�OOstl.':J RCCmsm�ProrOmce MoSpRp wpC �+.� � V