BRIDGES & CIVIL
Precast sections for Hawaiʻi’s infrastructure.
Explore KEEHI and AASHTO girders, bridge planks and alternate sections. Standard forms can offer economical options; talk with our team about custom sections and site constraints.
Design guidance & published assumptions
The following information preserves the original product design guidance and its referenced standards. Project requirements and final design must be coordinated with GPRM and the engineer of record.
The product and design information contained herein are provided for general design assistance and preliminary product sizing. Complete calculations and details, including custom solutions shall be provided to meet project specific requirements.
Standard sections usually yield the most economical solution. Hybrid or custom sections may be viable and should be discussed with GPRM.
Reference the PCI Bridge Design Manual (MNL-133) for valuable design, detailing, and production information on these types of products.
DESIGN
The design of precast/prestressed bridge products are usually undertaken by the Engineer of Record in Hawaii. Upon request, GPRM Prestress can provide designs as part of the shop drawing phase. This is more typically done for private sector projects.
Load/Span tables are typically not provided for specific products due to the many variables involved,
Materials can be tailored to project needs, recognizing local constraints.
Strand. The use of ½” 270k low relaxation strand is typical. The use of 0.6” strand can be considered if it will solve a particular design issue.
Concrete. Strengths of 6000 to 8000 psi can be routinely used to achieve the required design solution. Higher strengths can be considered but should be coordinated with the precast and readymix providers.
