VISUAL DICTIONARY XV Flashcards
What is the lowest division of a building or other construction partly or wholly below the surface of the ground, designed to support and anchor the superstructure and transmit its loads directly to the Earth?
FOUNDATION
What is a foundation system placed directly below the lowest part of a substructure and transferring building loads directly to the supporting soil by vertical pressure?
SHALLOW FOUNDATION
What is the part of a foundation bearing directly upon the supporting soil, set below the frostline and enlarge to distribute its load over a greater area?
FOOTING
What is the horizontal component of resistance developed by a soil mass against the horizontal movement of a vertical structure through the soil?
PASSIVE EARTH PRESSURE
What is the horizontal component of pressure that a soil mass exerts on a vertical retaining structure?
ACTIVE EARTH PRESSURE
What is the actual pressure developed between a footing and the supporting soil mass, equal to the quotient of the magnitude of the forces transmitted and the area of contact?
SOIL PRESSURE
CONTACT PRESSURE
What do you call the maximum unit pressure a foundation is permitted to impose vertically or laterally on a supporting soil mass?
ALLOWABLE BEARING PRESSURE
ALLOWABLE BEARING CAPACITY
ALLOWABLE SOIL PRESSURE
What is the gradual subsiding of a structure as the soil beneath its foundation consolidates under loading?
SETTLEMENT
What is the gradual reduction in the volume of a soil mass resulting from the application of a sustained load and an increase in compressive stress?
CONSOLIDATION
What do you call a reduction in volume of a soil mass under the action of a sustained load, due chiefly to a squeezing out of water from the voids within the mass and a transfer of the load from the soil water to the soil solids?
PRIMARY CONSOLIDATION
PRIMARY COMPRESSION
What do you call a reduction in volume of a soil mass under the action of a sustained load, due chiefly to adjustment of the internal structure of the soil mass after most of the load has been transferred from the soil water to the soil solids?
SECONDARY CONSOLIDATION
What is the relative movement of different parts of a structure caused by uneven settlement or failure of its foundation?
DIFFERENTIAL SETTLEMENT
What is the maximum depth at which soil is frozen or frost penetrates the ground?
FROSTLINE
What is an uplifting soil caused by the freezing of internal moisture?
FROST HEAVE
What is a softening of soil resulting from the thawing of frozen ground water?
FROST BOIL
What is a wall occurring below the floor nearest grade, designed to support an anchor the superstructure?
FOUNDATION WALL
What is a concrete slab placed over a dense or compacted base and supported directly by the ground, usually reinforced with welded wire fabric or a grid of reinforcing bars to control any cracking caused by drying shrinkage or thermal stresses?
GROUND SLAB
SLAB ON GRADE
What is a layer of coarse granular materials placed and compacted on undisturbed soil or prepared fill to prevent the capillary rise of moisture to a concrete ground slab ?
BASE COURSE
Refers to something that underlies or serves as a base or foundation
SUBSTRATUM
SUBSTRATE
What is a concrete footing extended laterally to distribute the foundation load over a wide enough area that the allowable bearing capacity of the supporting soil is not exceeded?
SPREAD FOOTING
What is the continuous spread footing of a foundation wall?
STRIP FOOTING
What is a single spread footing supporting a freestanding column or pier?
ISOLATED FOOTING
What is a reinforced concrete footing extended to support a row of columns?
CONTINUOUS FOOTING
What is a reinforced concrete beam supporting a superstructure at or near ground level and transferring the load to isolated footings, piers or piles?
GRADE BEAM
GROUND BEAM
What is a reinforced concrete footing connected to a tie beam to another footing in order to balance an asymmetrical imposed load, as the perimeter of a building site?
CANTILEVER FOOTING
STRAP FOOTING
What is a continuous or strip footing that changes levels in stages to accommodate a sloping site or bearing stratum?
STEPPED FOOTING
What is a reinforced concrete footing for a perimeter column or foundation wall extended to support an interior column load?
COMBINED FOOTING
What is a thick slab-like footing of reinforced concrete supporting a number of columns or an entire building?
MAT
What is a mat foundation reinforced by a grid of ribs above or below the slab ?
RIBBED MAT
What is a composite structure of reinforced concrete slabs and basement walls serving as a mat foundation?
CELLULAR MAT
What is a mat providing a footing on yielding soil, usually for an entire building, placed so that the weight of the displaced soil exceeds the weight of the construction?
RAFT
What is the framework of crossing beams for spreading heavy loads over large areas?
GRILLAGE/GRID
What is a foundation used in yielding soil, having for its footing a raft placed deep enough that the weight of the excavated soil is equal to or greater than the weight of the construction supported?
FLOATING FOUNDATION
What is the foundation system that extends down through unsuitable soil to transfer building loads to a more appropriate bearing stratum well below the superstructure?
DEEP FOUNDATION
What is a system of piles, pile caps and tie beams for transferring building loads down to a suitable bearing stratum, used especially when the soil mass directly below the construction is not suitable for the direct bearing of footings?
PILE FOUNDATION
What is a stratum of soil or rock on which a footing bears, or to which a building load is transferred by a pile or caisson?
BEARING STRATUM
What is a pile driven at a specified angle to the vertical in order to provide resistance against lateral forces?
BATTER PILE
What is the component of a pile hammer located just below the ram, that transfers the driving force to the pile head?
ANVIL
What is a cap for protecting a pile head as well as the pile hammer during a driving operation?
CUSHION
CUSHION BLOCK
CUSHION HEAD
What is a machine for driving piles, usually composed of a tall framework supporting machinery for lifting a pile in position before driving, a driving hammer, and vertical rails or leads for guiding the hammer?
PILE DRIVER
What is a steel band encircling the head of a timber pile to prevent it from splitting when driven?
DRIVE BAND
PILE RING
What is a long slender column of wood, steel, or reinforced concrete, driven or hammered vertically into the earth to form part of a foundation system?
PILE
what is a pile depending principally on the bearing resistance of soil or rock beneath its foot for support?
END-BEARING PILE
what is the maximum axial and lateral loads permitted on a pile, as determined by a dynamic pile formula, a static load test, or a geotechnical investigation of the foundation soil?
ALLOWABLE PILE LOAD
What is the deviation of a pile from its plan location or from the vertical, resulting in a reduction of its allowable load?
PILE ECCENTRICITY
What is the permitted deviation of a pile from the vertical, for which a reduction in allowable load is not required?
PILE TOLERANCE
What is a heavy steel pipe driven with the lower end either open or closed by a heavy steel plate or point and filled with concrete?
PIPE PILE
What is a steel H-section driven as a pile, sometimes encased in concrete to a point below the water table to prevent corrosion?
H-PILE
what is a log driven usually as a friction pile, often fitted with a steel shoe and a drive band to prevent it from splitting or shattering?
TIMBER PILE