Excavation, Formworks, Scaffolding and Staging Flashcards Preview

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Flashcards in Excavation, Formworks, Scaffolding and Staging Deck (32):
1

the digging and removal of earth from its natural position

excavation

2

ecavation characterized as having independent and hollow block wall footing

minor excavation

3

an excavation which requires wide or total extraction of the soil

major excavation

4

the process of providing temporary supports to the structure or ground during excavation

shoring

5

the process of rebuilding, strengthening or stabilising the foundation of an existing building

underpinning

6

these 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

7

part of the foundation system which provides support for the superstructure above to resist active earth pressure and anchor the superstructure against wind and seismic forces

foundation wall

8

serves as a sheeting and often used as a permanent foundation wall

slurry wall

9

a method of foundation system protection applied to a foundation wall when a subsoil conditions indicate that hydrostatic pressure will not occur

dampproffing

10

a system of temporary boarding, sheathing or pans used to produce the desired shape and size of concrete mass

formworks

11

boarding or sheeting of wood, metal, plastic, fiber glass for containing and giving a desired shape

form

12

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

scaffoldings

13

temporary bracing for supporting work under construction which cannot yet support itself

falsework

14

a temporary platform for workers and the materials that the use in building structures

staging

15

a piece of timber to support a wall, usually set in a diagonal or oblique position to hold the wall in place temporarily

shore

16

a horizontal timber or steel beam for reinforcing various vertical members. also called breast timber,ranger, waler

wale

17

any variety of slotted devices for lightening formwork

wedge

18

a vertical support for aligning and reinforcing wales also called stiffback

strong back

19

a brace, usually wood for spacing and keeping wall or footing forma apart, also called spacer

spreader

20

a wood strip fixed to the inside face of a form or preventing the passage of newly paced concrete a construction joint

bulkheart

21

a clamping device for keeping column forms or the tops of wall forms from spreading under fluid pressure of newly paced concrete

yoke

22

material for lining the inner face of a form

formliner

23

a metal tie for keeping wall forms from spreading under the fluid pressure for newly placed concrete

form tie

24

a form tie having notches or crimps which allow its ends to be snapped off after stripping of the froms

snap tie

25

a form tie having cones at each end inside the forms which allow it to also serve as a spreader

cone bolt

26

a small, truncated cone of wood, steel or plastic attached to a form tie to space and spread wall forms

cone

27

a form tie consisting of waler rods which are inserted through the form and threaded onto the ends of an inner rod

she bolt

28

a device for supporting and holding steel reinforcement

chair

29

a tall chair for supporting top bars in a concrete beam or slab

high chair

30

a wide chair for supporting and spacing bottom bars in a concrete beam or slab

bolster

31

trademark for a brand of cylindrical column form

sonotube

32

a structure whose primarily function is to provide lateral support for soil or rock

retaining wall