The digging and removal of Earth from its natural position, or the cavity resulting from such removal
EXCAVATION
Excavation characterize as having independent and hollow block wall footing where the digging of the soil for the footing extend to a depth from 1.0m to 5.0 m and about 0.5 m of wall footing
MINOR EXCAVATION
An excavation which requires wide or total extraction of the soil
MAJOR EXCAVATION
The process of providing temporary supports to the structure or ground during excavation
SHORING
The process of rebuilding, strengthening or stabilizing the foundation of an existing building
UNDERPINNING
Consist of steel cables or tendons that are inserted into holes pre-drilled through the sheet piling and into the rock or a suitable stratum of soil, grouted under pressure to anchor them to the rock soil, and post-tensioned with a hydraulic jack
TIEBACK
Part of the foundation system which provides support for the superstructure above and enclose a basement or crawl space partly or wholly below grade
FOUNDATION WALL
A concrete wall cast in a trench to serve as sheeting and often used as a permanent foundation wall
SLURRY WALL
A method of foundation system protection applied to a foundation wall when a subsoil conditions indicate that hydrostatic pressure from the groundwater table will not occur
DAMPPROOFING
A system of temporary boarding, sheathing, or pans used to produce the desired shape and size of concrete mass
FORMWORKS
Boarding or sheeting of wood, metal, plastic, or fiberglass for containing and giving a desired shape to newly placed concrete until it sets and gains sufficient strength to be self-supporting
FORM
A system of temporary platform to support workers and materials on the face of a structure and to provide access to work areas above ground
SCAFFOLDING
Temporary bracing for supporting work under construction which cannot yet support itself
FALSEWORK
A temporary platform for workers and the materials that they use in building structures
STAGING
A piece of timber to support a wall, usually set in a diagonal or oblique position, to hold the wall in place temporarily
SHORE
A horizontal timber or steel beam for reinforcing various vertical members, as in formwork or sheet piling, or for retaining Earth at the edge of an embankment
WALE / BREAST TIMBER / WALER
Any of a variety of slotted devices for tightening formwork and transferring the force in a form tie to the wales
WEDGE
A vertical support for aligning and reinforcing wales
STRONGBACK / STIFFBACK
A brace, usually of wood, for spacing and keeping wall or footing forms apart
SPACER/SPREADER
A wood strip fixed to the inside face of a form to indicate the top of a concrete lift
GRADE STRIP
A partition closing the end of a form or preventing the passage or newly placed concrete at a construction joint
BULKHEAD
A longitudinal groove or channel formed in a concrete footing or other member that has set, providing a shear-resisting key for newly placed concrete
KEYWAY
A clamping device for keeping column forms or the tops of wall forms from spreading under the fluid pressure of newly placed concrete
YOKE
Material for lining the inner face of a form, specially selected to impart a smooth or patterned finish to the concrete surface
FORMLINER