I-15 Bridge #6 –
Phoenix Sky Harbor International Airport New Traffic Control Tower and Terminal Radar Control Base Building – The Federal Aviation Administration has built a 300 foot tall tower at Phoenix Sky Harbor International Airport. The facility will have a 17 foot below ground service area and a 300 foot tall tower with cab floor at 275 feet above ground. The foundation loads are in the range of 30 kips/foot to 18,000 kips/foot with a seismic shear of approximately 2000 kips. HA has completed site seismic analysis to estimate site acceleration, performed 12-50 foot deep test borings with a percussion type rig, collected soil samples for laboratory testing for physical properties and the presence of contamination. HA provided the foundation analysis for deep and shallow foundations, foundations on elastic media, basement wall pressures and design parameters, excavation slope stability analysis, correlated foundation interaction with the below ground Automated People Mover Tunnel, and performed a settlement analysis. HA also participated in discussions with the design team. Client: Jacobs Facilities.
Williams Field Road Bridge at SR 202 – HA provided geotechnical exploration services with foundation recommendations for bridge foundation for Williams Field underpass at Santan Freeway (SR 202L) and Williams Field Road in Gilbert, Arizona. The proposed structures included two bridges, retaining walls, and abutments. HA’s analyzed for deep foundations consisting of drilled shafts (piers) and shallow foundations consisting of spread footings. All analysis and recommendations were in compliance with the ADOT Materials Preliminary Engineering and Design Manual, and AASHTO Standard Specifications for Highway Bridges. The deep foundation system was analyzed based on deformation limit state design in which the foundation elements are assigned a predetermined settlement, which is then utilize to correct the load carrying capacity. While still conservative, this method has the advantages of lowering costs and saving time in construction of drilled shaft foundations. The shallow foundation system is also considered because the greater Phoenix area frequently has Salt River alluvium consisting of sand, gravel and cobble at shallow depth which can provide very high load carrying capacity if constructed properly.
McKellips Road Bridge Over the Salt River – HA has provided foundation analysis, laboratory soil data analysis, site geologic/geomorphic setting evaluation, and preparation of a final subsurface investigations report for the proposed multi-span bridge. Bridge foundation analysis included analysis of drilled shaft utilizing load-transfer technology and the deformation limit state design method proposed by AASHTO. Charts and nomographs were developed in this regard for utilization by the bridge engineers. HA’s work also included bridge abutment and approach road pavement analysis. Client: ATL/Parsons Brinkerhoff.
Automated People Mover at Sky Harbor International Airport – HA completed preliminary subsurface investigations for this two mile long underground tunnel to be located at the airport. The tunnel will traverse beneath the FAA Tower, terminal building and roadways. HA’s work included a detailed geological and geomorphic analysis of the site, hydro-geology, seismic analysis for life line structures, drilling seven 100 foot deep test borings, laboratory soil testing, engineering analysis of soils and geology in perspective of tunnel construction and liner design, and provided charts/nomographs of soil properties to be utilized by tunnel designers. The project also included construction of two groundwater monitoring wells. Client: City of Phoenix.
51st Avenue Bridge Over the Salt River – HA was the geotechnical consultant to Kiewit Western for this design-build project (one of the first major design-build projects in Arizona) and provided geotechnical analysis for foundations, abutment, approach roadways pavement, construction inspection for drilled shaft, girders, deck slabs, bridge piers, approach slabs and roadway sections. HA was also QC manager for this project and completed caisson non-destructive evaluation by gamma-gamma logging, cross-hole sonic logging and coring. In 1999 this project received The American Consulting Engineers Award for Quality Control. Client: Kiewit Western Company.
Arizona Biltmore Golf Course Bridge Over SRP Canal – HA has completed drilling, foundation analysis, analysis of bridge foundation load influence on an underground tunnel for the ACDC canal. HA’s scope included shallow and deep foundation analysis using AASHTO specifications and foundation models. Latest publications by Transportation Research Board and the U.S. Army Corps of Engineers were used to correlate the soils index and engineering properties with foundation models to calculate foundation dimensions and settlement rates in caliche type soil. HA also used lateral earth pressure models for abutment and impact on a nearby underground tunnel used for the ACDC canal. Client: Morrison-Maierle, Inc.
Cochise County Regional Landfills Solid Waste Engineering and Design – HA is currently contracted by Cochise County to provide all solid waste engineering services for their Eastern Regional Landfill (ERLF) and Western Regional Landfill WRLF including closure design/construction administration/CQA, new cell design/CQA, and design of ancillary features including leachate impoundments and equipment service/wash facilities. Our closure project work includes design, construction administration, and QA observation and testing for closure of the ERLF. HA’s services include: design of the final cover system including drainage system and seeding for erosion control, preparation of specifications for the infiltration barrier layer, response to ADEQ comments, evaluation of borrow source material, and construction administration during construction of the landfill cap; preparation of borrow excavation plan, protective soil cover, and leachate collection system plans/details; liner and slope calculations; and, preparation of the construction specifications and CQA plan. HA also prepared the bid documents and engineer’s cost estimate. In support of design, construction administration, and QA observation and testing services that have been or will be performed for the ERLF closure include geotechnical exploration for evaluation of on-site and off-site borrow sources of final cover soils.
Rio Salado Phoenix Reach Environmental Restoration Project – HA provided consulting engineering, geotechnical exploration and laboratory testing services during design in support of the joint City of Phoenix/US Army Corps of Engineers’ river bottom restoration and park development project. HA’s geotechnical services comprised explorations to provide engineering evaluations related to soil conditions for construction of project features including water supply reservoirs and conveyance canals, engineered wetlands and woodlands with constructed liner systems, multi-purpose buildings, pedestrian walk ways, roadways and bridges, and flood control features. HA is currently providing quality control testing services for all soil/aggregate, asphaltic concrete, and Portland cement concrete used in construction of project features. HA personnel assigned to this project (and their work role) included Enamul Hoque (Senior Engineer/Project Principal), Kenneth Turner (Field Exploration & Laboratory Testing), Abdur Rashid (Field & Laboratory Testing), and Matt Croft (Field Testing). HA completed the geotechnical work in 2004 and is currently working on CQC testing and field engineering analysis/review related to construction.
Reach 11 Recreation Area – HA provided consulting engineering, geotechnical exploration, and laboratory testing services in support of the City of Phoenix park development project. HA’s services included geotechnical exploration to provide soils engineering evaluations for construction of project features including soccer fields, stadium seating, announcers booth, maintenance and concession buildings, roadways and parking lots, and pedestrian walk ways. HA also performed test pits for borrow source evaluation and geotechnical evaluations (slope stability and seepage analysis) related to Deer Valley Road realignment and dam relocation that are required for the project. HA is currently providing CQA services to the City of Phoenix for this project. HA personnel assigned to this project (and their work role) included Enamul Hoque (Senior Engineer/Project Principal), Trent Titchenal (Field Exploration & Laboratory Testing), Cory McElprang (Field Exploration & Laboratory Testing), and Matt Alexander (Field CQA Testing). HA completed the geotechnical work this year is currently working on CQC testing related to construction.
Sky Harbor Airport New FAA Air Traffic Control Tower – The Federal Aviation Administration (FAA) Western Pacific Region is the owner of the on-going design-build project. HA was sub-contracted by the general contractor, Jacobs Facilities to provide the geotechnical exploration including field logging and sampling, laboratory testing, and engineering report preparation. The project includes design and construction of the FAA facility at Sky Harbor International Airport including a four story base building, an approximately 300-foot tall air traffic control tower, and ancillary features including a two story parking garage. The concrete structures are designed for dead loads and live loads including wind, seismic, and blast loading. HA’s role comprised the geotechnical exploration and engineering report to be used in design. Field activities included coordination of all underground utilities location, drilling of 12 soil borings to depths ranging from 30 to 50 feet below surface grade, logging of soil borings, soil sample collection, and laboratory testing of collected soil samples. The engineering analysis included a foundation analysis for gravity load, lateral load, settlement, potential impacts related to underground openings beneath the foundation such as the tunnel that will be constructed for the proposed Automated People Mover. Transient load analysis included earthquake, wind and blast loads and in this regard included seismicity analysis, analysis for lateral loads and site geologic conditions. HA’s QC testing and inspection responsibilities include all soil, concrete, asphalt, and steel to be incorporated into the project. HA also provided field engineering support during construction including shoring system design review and foundation subgrade stabilization evaluation. HA personnel assigned to this project (and their work role) included Enamul Hoque (Senior Engineer/Project Principal), Trent Titchenal (Field Exploration & Laboratory Testing), Abdur Rashid (Laboratory Testing), Cory McElprang (Field Testing and Inspection), Kyle Mellinger (Field Testing and Inspection), and Anthony Savoca (Field Testing and Inspection). HA completed the geotechnical exploration in 2004 and CQC testing in 2006.
Geotechnical Explorations for Numerous City of Phoenix Projects – HA has performed over 100 small to large geotechnical projects for the City of Phoenix Street Transportation Department under annual service contracts. The project work involved has included roadways, bridges, underground utilities including sewers and water transmission mains, building structures, parking structures, parking lots, and airport runways and infrastructure. These projects typically include drilling (utilizing a hollow stem auger drill rigs for shallow borings and air percussion type drill rigs for deep borings in sand, gravel, and cobble soils), soil sample collection, laboratory testing of selected soil samples, and preparation of a detailed geotechnical engineering reports. Our engineering reports typically include (depending on the complexity of the project and as appropriate) the following: a description of surface/subsurface conditions; a description of field methods; detailed computer generated boring logs; laboratory test results; geologic hazards evaluation; seismic evaluation; settlement evaluation; corrosion potential evaluation; engineered fill and earthwork construction recommendations; and, recommendations regarding foundations and alternative foundations, slabs-on-grade, retainer walls, bridges, pavement, tunneling methods, structures below the water table, surface and subsurface drainage, and structural waterproofing and dewatering. HA personnel assigned to this project work (and their work role) include Enamul Hoque (Senior Engineer/Project Principal), Trent Titchenal (Field Exploration & Laboratory Testing), Cory McElprang (Field Exploration & Engineering Analysis/Reporting), David Jerral (Laboratory Testing), and Abdur Rashid (Laboratory Testing). Hoque & Associates has been performing these services under contract to the City of Phoenix Street Transportation Department since 1997.
CQA Testing and Observation for Numerous City of Phoenix Projects – HA has performed CQA testing on more than 150 construction projects for the City of Phoenix Street Transportation Department under annual service contracts. Under the on-call contract, Hoque & Associates provides construction materials quality assurance testing and observation services. The project work has included roadways, bridges, underground utilities including sewers and water transmission mains, building structures, parking structures, parking lots, and airport runways and infrastructure including multi-level parking structures and terminal buildings. HA personnel assigned to this project work (and their work role) include Enamul Hoque (Senior Engineer/Project Principal), Trent Titchenal (Special Inspection & Laboratory Testing), Cory McElprang (Field & Laboratory Testing), Dwayne Culpepper (Field & Laboratory Testing), Tom Hoover (Field & Laboratory Testing) and Abdur Rashid (Field & Laboratory Testing). Hoque & Associates has been performing these services under contract to the City of Phoenix Street Transportation Department since 1997.