Chance Dictionary
ANCHOR - A foundation in tension, usually attached to a
tendon to transfer the load to a structure. A common
anchor application would be a buried plate in the
earth using a rod or cable to hold a structure subject
to wind loads such as a mobile home.
AASHTO -
The American Association of State Highway and Transportation
Officials. This group of government and private
companies studies methods and material applications
and sets performance standards for materials and
procedures.
BEARING PLATE - The CHANCE anchor system utilizes "bearing
plates" to carry the loads. The CHANCE bearing
plates are formed in the shape of a helix so that
they can be rotated (screwed) into the soil. Bearing
plates are one of the most efficient methods of
transferring loads to the soil. A slab or a footing
are other types of bearing load transfers.
BOCA - The Building Officials and Code Administrators
International. This group sets minimum building
standards for the USA's Midwest and Northeast.
COMPRESSION - the force pushing or loading down. This can be
caused by dead weight, live loads, rotation of structure,
etc...
FHWA -
The Federal Highway Administration. This is the
federal governmental body that regulates highway
construction, oversees and inspects design and construction
of federal highways.
FOUNDATION -
a structure in or on the soil to transfer the load
to soil to stabilize the super structure.
HELIX, HELICES - This is defined as one flight of a screw thread,
often called a spiral or auger shape. The CHANCE
bearing plates are shaped in a helix with a 3 inch
pitch so the bearing plate advances into the soil
3 inches with each revolution of the anchor shaft.
When multiple helices are used, the helices are
spaced in increments of 3 inches so that the helices
can "track" the leading helix; this minimizes
soil disturbance.
ICBO -
The International Conference of Building Officials.
This building code group sets minimum building standards
for most of the USA west of the Mississippi River.
Some states, Arkansas, Delaware, Indiana, Texas,
and West Virginia, have two codes or different codes.
Not all counties or municipals adopt building codes.
INSITU - Refers to the existing soil in place, the original
material at the construction site.
ISO 9001 -
This is an international organization that sets
the minimum criteria for quality standards a company
must have in place to participate in the ISO program.
MOORING -
A place to tie or fasten a boat. As used in the
CHANCE web site, this is a line or chain to a floating
buoy that fasten to a submerged screw anchor.
NEMA -
The National Electrical Manufacturers Association.
This organization sets standards for manufacturers
on utility electrical type products.
PAPI and NAVID - FAA (Federal Aviation Administration)
acronyms for landing and navigational control systems.
SBCCI - The Southern Building Code Congress International
also called the Standard Building Code. This group
sets the minimum building codes for the southeast
section of the USA from the Mississippi River east
and north to the 36.5 degree parallel. Some states,
Arkansas, Delaware, Indiana, Texas, and West Virginia,
have two codes or different codes. Not all counties
or municipals adopt building codes.
SHEAR STRENGTH - A measurement test to determine
the ability of soil to hold loads (cohesive soil,
clay).
SOIL NAIL - A state of the art method of stabilizing a soil
mass. A soil nail is to soil as steel reinforcing
bar is to concrete. The object of soil nailing is
to create a gravity wall to act as a retaining wall.
TENDON -
The shaft of an anchor used to pull against the
anchor plate to hold a structure.
TENSILE - The force pulling an anchor system. This can be
caused by wind, ice loads, wall pressures, etc...
