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IROGER A. ARCHABAL, P.E. concrete Mill structure. Assuming large mat foundations, these structures would exert greater than a 6 kips per square foot bearing pressure. Settlements were estimated using conventional data and in -situ test data and found to be unacceptable. Considering the cohesive character of the soil and shallow groundwater, ground improvement was not practical. Consequently, various alternative deep foundation options were evaluated including: pressure- injected footings, driven precast concrete and steel pipe piles, and augercast piles. The 45 -foot long, 100 -ton design, steel pipe pile was chosen for design and a compression load test was performed to verify loud carrying capacity. Kalorama Place Development - Washington, D.C. - The project consisted of the redevelopment of a parcel in Washington, D.C. Existing three to four story brick structures were to be razed and replaced with seven, four to five story steel framed, masonry wall condominium structures. Maximum column loads of the new structures were up to 600 kips. Competent weathered rock was encountered at depths of between 5 to 20 feet on the moderately sloped site. Considering the variability in depth of competent bearing materials, drilled shaft foundations were recommended for structure support. Various Tall Transmission Tower Structures — Mr. Archabal performed geotechnical explorations and provided foundation recommendations for support of 150 to 200 ft. tall transmission towers. Drilled shafts, typically 9 to 11 ft. in diameter and 40 to 60 ft. deep, were recommended for support of the tower structures. Mr. Archabal also provided overall project management and quality control of the drilled shaft installation activities. SHALLOW FOUNDATIONS Mr. Archabal has served as project engineer and project managerfor numerous projects involving varied shallow foundation types, including spread footings, composite footings and mat foundations. Several representative projects are listed below: Turnberry Place, Las Vegas, Nevada - The Project consists of 4 - 38 story condominium Towers along with a Club facility TTinlh nn snit y mat foundations were evaluates' and iecommenr,7eri as the --- ferred foundation solution. Extensive groundwaterstudies were performed to lower the finished floor level as close as practical to the groundwater level. In addition, dewatering studies were performed to recommend a temporary dewatering system. The Metropolitan, Miami, Florida - A 27 -story condominium tower and 5 level parking garage were founded on the surficial limerock layer in downtown Miami using a mat foundation and spread footings, respectively. Detailed elevation of bearing capacity and settlements were performed in order to provide this most cost - effective foundation solution. Bulk Petroleum Terminal, Donaldsonville, Louisiana - The project consisted of large diameter bulk petroleum storage tanks. Bearing capacity and settlements were analyzed. Stage loading and instrumentation during initial loading was recommended to allow for controlled strength gain and safe foundation support. ' ROADWAYS /BRIDGE PROJECTS AND PAVEMENTS Mr. Archabal has extensive experience in roadway construction projects ranging from elevated roadway "fly- overs ", bridges, roadbed preparation and improvement, subgrade stabilization and pavement thickness design methodology. Representative projects are presented below: Miami International Center (AEC), Miami, Florida - The largest, most aggressive conceptual undertaking by the FDOT related to enhancing mobility, facilitating transfer between transportation modes, reducing the use of private autos and integrating transportation modes and land uses. Performed geotechnical exploration for the 38.5 acre MIC Core Facility, three miles of elevated roadway "flyover ", half -mile of MIC/MIA elevated passenger rail system and 3/4 -mile of Rail Corridor to be rehabilitated. Geotechnical