Pile capacities change with strand quantity, diameter, location and concrete
strength. A wide variety of pile designs are used throughout North America, even
within one pile size.
The KIE-LOCK splice load bearing elements are designed to meet strength
requirements using the standard configuration and modifying main
plate thickness, size of locking bars, and size, number and length of rebar
anchor/pile end reinforcement.
Calculations verifying the mechanical ability of the load-bearing components to meet
specified capacities in tension, bending, and compression are submitted, with
detailed shop drawings for a variety of standard approved KIE-LOCK splices.
Rebar anchor/pile end reinforcement is designed to ACI/AASHTO, DOT, and/or building code
requirements, and calculations are included in the submittal. The KIE-LOCK uses only
Dayton/Richmond threaded Dowel Bars which give 100% strength of each rebar
size, instead of cut threading rebar ends which reduces the effective tensile area by
one rebar size.
There are no standard precast pile designs used throughout North America. Pile
designs tend to be regional and vary with the customer. Therefore, it is not practical
or economically feasible to have tests for every pile design, project, or have blanket
certifications (such as ICBO) that are meaningful.
KIE-LOCK test reports are representative and verify the design methodology:
Studies by the National Bureau of Standards (Materials Research, Metallurgy Div.)
conclude that steel pilings are not significantly affected by corrosion in undisturbed
(anaerobic) soils, regardless of soil types and properties. A copy of this report is
available upon request.
CalTrans reports of extraction of earthquake collapsed Cypress Viaduct steel pipe
piles in Oakland indicate that no significant corrosion occurred in 35+ years despite
presence of high levels of chloride, sulfates, and low values of soil resistivities. A
copy of this report is available upon request.
A steel splice can be safely located in the concrete pile zone that is in previously
undisturbed (anaerobic) soil, and below ocean and river scour lines. (See "Projects"
for some pier and bridge installations.)