Owner
County of Lancaster, Lancaster, Pa.
Precast Producer and Precast Specialty Engineer
Newcrete Products, Center Valley, Pa.
Engineer of Record
Rettew Associates Inc., Lancaster, Pa
General Contractor
Kinsley Construction Inc., York, Pa.Key Project Attributes
- Precast concrete’s aesthetic versatility allowed original arch design to be replicated with more strength and longer-term durability to reduce maintenance needs.
- Design was cast to exact specifications in plant-controlled conditions.
- Epoxy-coated rebar and modified mix design with reduced aggregate size provided high resistance to permeability and more corrosion resistance.
Project/Precast Scope
- Precast concrete tied-through arches, consisting of a maximum height of 11’-7 ½”, a top chord of 1’8” x 2’0”, a bottom chord of 1’8” by 2’7”, with vertical and diagonal length of 1’0” x 1’1”
- 47 tons per arch
- 25,000 pounds of reinforcing and temporary post-tensioning strands.
- Post-tensing strands used for lifting and transporting only; released after erection.
- Form tolerances set to a maximum of 1/16 inch using survey and control equipment.
- Modified concrete mix design with reduced aggregate size to ensure concrete consolidation.
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