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.
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.
CE Marking – Claim that a particular construction product can be legally placed on the market of members states of the European Economic Area (EEA) and is based on the principal that the product specification, and therefore, the product is “fit for purpose”.
CMCC – Canada’s leading source of technical information on building products and building technology for code compliance. A nonprofit, public-benefit corporation, ICC-ES performs technical evaluations of building products, components, methods and materials.
COMPRESSION – the force pushing or loading down. This can be caused by dead weight, live loads, rotation of structure, etc…
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.
ICC-ES – the United States’ leading source of technical information on building products and building technology for code compliance. A nonprofit, public-benefit corporation, ICC-ES performs technical evaluations of building products, components, methods and materials.
IN SITU – 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.
LABC (Local Authority Building Control) – A member organisation representing local authority building control in England and Wales.
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.
NHBC (National House-Building Council) – the leading warranty and insurance provider and standards setter for UK house-building for new and newly converted homes.
SCI (The Steel Construction Institute) – the leading, independent provider of technical expertise and disseminator of best practice to the UK steel construction sector.
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…