Tierra South Florida, Inc. (TSF)

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RFQ# 18-05-24 Architectural and Engineering Consulting Services: Construction Testing and Inspections RFQ# 20-70-01 Continuing Professional Consulting Services Mast Arms at Military Trail and PBC Fire Station 43, Palm Beach County, Florida: Provided geotechnical engineering services for the traffic signal mast arms at the intersection of Military Trail and PBC Fire Station No. 43 in Palm Beach County, Florida. The purpose of the study was to provide geotechnical input to the design team to assist in the foundation design. The study was performed to explore the subsurface conditions at the structure locations and provide geotechnical recommendations to guide the design. Field work included SPT borings. Provided geotechnical evaluations of the subsurface conditions, and recommendations regarding foundation design and drilled shaft construction. Completed on time and within budget in 2016 SR 80 / Southern Boulevard Bridges Replacement, Palm Beach County, Florida: Performed a geotechnical engineering study for the replacement of the SR 80/Southern Blvd. Bridges over the Intracoastal Waterway and Lake Worth Lagoon between West Palm Beach and Palm Beach. The bridges were built in 1950 and are both functionally obsolete and structurally deficient. The new bridges will each carry one lane of traffic in each direction, have 6ft-wide sidewalks in each direction, and 10ft-wide paved shoulders which will include 7-foot-wide bike lanes. The new bridge over the Intracoastal Waterway will be a bascule bridge with a vertical clearance of 21 ft. The new bridge over Lake Worth Lagoon will be a low level, fixed bridge similar to the existing bridge. Proposed construction included a temporary bridge for phase construction. The project also includes reconstruction and paving of the roadway approaches and causeway. Field work included SPT borings for bridges, retaining walls, mast arms and roadway improvements. Bridge borings in the intracoastal waterway were performed from barge mounted drill-rigs. Performed pile and drilled shaft capacity analyses and provided recommendations for bridge foundations, retaining walls, mast arms and roadway widening. Additionally, TSF completed an unknown foundation study for the existing bascule piers. For this study, 4 borings were extended to a depth of 100 feet below mud line. At completion, a 2-inch casing was installed for Parallel Seismic (PS) geophysical testing to provide in-situ information on the overall length/depth of the existing piles at the bascule piers. Completed on time and within budget in 2015 Kirk Road over L.W.D.D. L-7 Canal / So. Of L.W.D.D L-7 Canal to Pot O’Gold Street, Palm Beach County, Florida: TSF provided construction material testing services for the Kirk Road over L.W.D.D. L-7 Canal / So. Of L.W.D.D L-7 Canal to Pot O’Gold Street project located in Palm Beach County. This project consisted of roadway improvements including drainage structures and sidewalks. TSF’s construction material testing services included, standard proctor testing, in-place density testing, compressive strength testing and drilled shaft inspections. Completed on time and within budget in 2017 Congress Avenue North of Okeechobee Boulevard Culvert Replacement, Palm Beach County, Florida. Description of work: TSF performed a Geotechnical Engineering Study for the improvement project to Congress Avenue in Palm Beach County, Florida. The improvements include one culvert structure to replace the existing bridge. The purpose of the study was to provide Geotechnical input to the design team to assist in evaluation of the merits of the potential improvements. Field work included auger borings, SPT borings and on-site exfiltration test. Reviewed readily available published topographic and soils information obtained from the “Soil Survey of Palm Beach County, Florida” published by the USDA NRCS. Classified soil samples using the AASHTO/USCS Soil Classification System and performed laboratory testing to establish the soil properties. The laboratory testing included grain size analysis, natural moisture content tests, organic content tests, and corrosion tests. Provided geotechnical evaluation of the soil and groundwater conditions and geotechnical recommendations for the culvert replacement. Completed on time and within budget in 2016 81