Dibble recently finished the design for grading and drainage improvements for all of the infield areas within the Aircraft Operations Area at Chandler Municipal Airport. The goal of the project was to regrade all the airfield areas within the runway safety and taxiway safety areas to meet all FAA grading criteria and to appropriately size and place stormwater culverts under the runways and taxiways in order direct drainage to the ultimate discharge point off the Airport. In order to meet NEPA regulations, this project also included relocation of environmentally-protected burrowing owls currently on the airport to new habitats. This project is currently in the final phase of construction and on target to be within the estimated construction budget.
Dibble recently completed design and construction for the rehabilitation of Runway 12-30 with the specific goal of extending the life of the runway as much as possible with the anticipated available construction budget. The asphalt concrete (AC) pavement rehabilitation consisted of milling the existing runway to a depth of two inches and placing three inches of new AC pavement, and as-needed crack repair/seal coatings on the milled surface. Minor grading modifications and placement of new pavement markings were also included. Pinal Airpark is a single-runway airport that serves hundreds of large, commercial service aircraft every year (i.e., Boeing 747, etc.). The success and business of tenants at this facility is contingent on the ability to bring in these heavy aircraft on an as-needed basis. Therefore, it was crucial for the design team to work with Pinal County and the various tenants to understand their operational needs and constraints. Ultimately, our team worked with the stakeholders to understand that a 20-day runway shutdown was the maximum time that could be afforded by the tenants. The Dibble team reached out to local contractors to understand the labor required for this project as well as the cost implications of a 24-hour daily construction operation. The project was successfully constructed under the estimated time/construction costs.
Dibble provided design and construction administration services for the reconstruction and expansion of the existing United States Forest Service (USFS) Tanker Base including one additional aircraft parking bay, small aircraft parking, new helipad, and fire slurry distribution improvements. The project was undertaken to meet updated geometry and aircraft standards, as well as to increase the fire-fighting capacity and capabilities of the USFS. Drainage improvements included newly graded infield areas, culverts and catch basins sized for fully loaded C-130 aircraft with minimal cover from existing conditions.
Our team provided concept/alternative layout evaluation, detailed design, bid assistance, full construction administration and inspection services for this project, which addressed the FAA-identified "Hot Spot" near the RW 12R/TW G intersection. A significant portion of the effort of this project centered around providing alternatives for an aircraft run-up area based on aircraft type/size and logical access. Dibble partnered with Gateway, FAA, ADOT and ATCT staff through meetings and workshops in an extensive design concept phase to develop a preferred configuration that combined FAA standard geometry and separation criteria with our use of AeroTurn for aircraft modeling, and provided a solution that meets everyone's needs and costs.
This project included design, bid and construction phase services for the realignment of Taxiways A and C, as well as improvements to the Runway 4R Run-Up Area in accordance with the recommendations from the FAA's Runway Safety Action Team (RSAT). The purpose of this project was to help reduce runway incursions and deviations at Falcon Field Airport by providing conventional exit connector taxiways at the ends of the runways and eliminating large expanses of traversable pavement. Dibble also performed in-depth drainage analysis as the improvements had significant impacts to the regional basin located at the airport.
Dibble provided design and construction phase services for improvements to parallel Taxiway P and all connector taxiways, including pavement edge repairs, construction of 20 to 25-foot wide structural shoulders along the runway and taxiway pavements to meet FAA recommendations, striping improvements, and rehabilitation of the entire airfield lighting and signage system. This project was constructed in seven phases and was approached with user accessibility and operational capability in mind. Phase 1 included all work along the connecting taxiways up to the hold lines. Phases 2 through 7 consisted of work segments along parallel Taxiway P. This phasing approach maintained a good balance of constructability, anticipated construction costs, operational constraints, and accessibility.
Dibble provided design, bid and construction phase services for the rehabilitation of the 2,200-space Economy Parking Lot at Tucson International Airport. Construction consisted of 2.5 inches of new asphalt concrete pavement on recompacted aggregate base course, taking advantage of existing stable, robust subsurface materials. One key component of this project was maintaining portions of the lot for use throughout construction by identifying the estimated construction timing, analyzing historical monthly parking demand through the revenue control system, and developing construction phasing that balanced parking demand, safety, and meaningful construction areas. This project was completed in under five months through four separate construction phases.