Project Description:
This project consisted of twelve (x12) post-tensioned tennis courts for the Hutchinson Public Schools with four (x4) courts located at the Park Elementary School and eight (x8) located at the Hutchinson High School in Hutchinson, Minnesota.
At the Park Elementary School, the existing bituminous courts were removed because of poor existing pavement conditions and the subgrade was prepared for the post-tensioned surface. The post-tensioned surface was constructed in a single pour with initial tendon tensioning occurring within hours of concrete placement. Perimeter fence posts for the tennis court were placed in a maintenance strip outside of the post-tension slab to allow for ease of construction and for maintenance purposes. Interior fence posts separating the north courts from the south courts were placed in the post-tensioned slab with design consideration given for slab movement due to tensioning. An integral maintenance strip/retaining wall was designed along the south edge of the courts to allow for grade change between the existing pavement and the proposed courts and two Pro Dunk Diamond Basketball hoop systems were constructed south of the courts. The courts were finished with blue courts and a green background and were striped for pickleball at the request of the Owner. Additionally, the total impervious area of the Park Elementary project site was decreased in order to meet stormwater requirements for the City of Hutchinson.
At the Hutchinson High School, the post-tensioned slab was constructed over the existing bituminous courts as the existing courts were deemed acceptable. A sand layer was placed over the existing courts to bring the subgrade to the desired elevations and the post-tensioned slabs were poured atop. The eight courts were poured in two slabs with a reinforced spectator area constructed between the two slabs. Stormwater management was not required by the City of Hutchinson as site disturbance was limited to less than an acre due to the existing bituminous courts remaining below the proposed courts.
Larson Engineering Services:
Larson Engineering led the project from conceptual design to project completion. Larson Engineering developed construction cost estimates and worked with District representatives to design plans and specifications that would yield the most cost-effective solution for the project. LEI then helped qualify the most responsive responsible bidder for District approval and conducted follow-up construction observation as well as prepare close-out documents for the District. Larson Engineering was able to complete the project in a timely manner as authorization to begin work was given in Late September of 2018 and the project was released for bid in early January of 2019. Through careful coordination with the Owner, Larson Engineering was able to assist the Contractors in determining a schedule that had minimal impact on School events and provided a substantially complete product for use at the beginning of the school year.