G8-9

Question 1

Deep foundations may have what?

Answer 1

piles or caissons going down into bedrock for support

Question 2

What are bearing piles?

Answer 2

wooden, steel, or concrete piles that extend down to bedrock that increase the ability to stabilize and support a structure

Question 3

Bearing piles are usually driven in?

Answer 3

groupings

Question 4

what is between the bearing pile and the grade beam?

Answer 4

Pile cap

Question 5

Bearing piles are driven down to it hits what?

Answer 5

Point of Refusal, witch measures the resistance experienced by the pile driving equipment. An engineer will specify the Point of Refuasl

Question 6

a measure for wooden pile straightness is called?

Answer 6

the pile sweep

Question 7

Friction piles are what?

Answer 7

Piles that transfer a vertical load to the soil around the pile (skin friction)

Question 8

What species of wood is preferred for wood piles?

Answer 8

Pine or Western Red Cedar treated with creosote or other preservatives

Question 9

what is the swell?

Answer 9

It is the displacement of the soil around pile that causes this. causes a mound

Question 10

Name the parts of the pile top down.

Answer 10

Driving ring
Head
Butt
Pile cut off line
Foot
Tip
Pile shoe

Question 11

What can be used to drive piles in sandy locations?

Answer 11

High pressure water forced down the centre of the pile pushing the sand back up and driving the pile

Question 12

what is constructed first in tilt up construction?

Answer 12

The main floor slab and footings

Question 13

The main floor slab must be?

Answer 13

Very strong to withstand a walking crane

Question 14

what is used for bracing a tilt up form panel?

Answer 14

telescoping steel pipe braces

Question 15

How are the panels bolted together?

Answer 15

with steel angle iron

Question 16

What are the joints between panels filled with?

Answer 16

backer rod or rubber insert and caulking

Question 17

what does it mean too walk the panel?

Answer 17

requires the crane to move while carrying the panel

Question 18

How far down from the top of the floor slab, should the bottom of the panel be?

Answer 18

at least 12 inches

Question 19

what is placed between the footing and panel?

Answer 19

Grout Pad

Question 20

what is used to connect the infill concrete to the wall panel?

Answer 20

L shape Reinforcing bars

Question 21

what is the tolerance for a grout pad?

Answer 21

very small plus or minus 0.5mm

Question 22

how far back is the slab kept back from the footing?

Answer 22

4-6 feet

Question 23

what are the type of forms used to cast pre cast wall panels?

Answer 23

Edge Forms

Question 24

bracing for edge forms should be

Answer 24

1x4

Question 25

what kind of panels can be stacked?

Answer 25

full panels with no window or doors

Question 26

what is usually required around lifting inserts?

Answer 26

extra reinforcing steel

Question 27

what are strong backs used for?

Answer 27

provide support for delicate details around windows and doors in wall panels

Question 28

what kind of concrete is used in tilt up?

Answer 28

High strength concrete, An accelerator may be added to gain strength quicker and lift the wall quicker

Question 29

what should happen after finishing?

Answer 29

immediately apply the curing agent

Question 30

what does a rebound hammer do?

Answer 30

spring loaded device with a dowel bounced off the surface. the more the hammer rebounds the stronger the concrete

Question 31

who supervises the lift?

Answer 31

A qualified person (does not need to be an engineer)

Question 32

A safety factor of ___ is used with drilled anchors

Answer 32

4

Question 33

what are the tops of the wall finished with?

Answer 33

cap flashing that continues down onto the roof

Question 34

pilasters are formed with what?

Answer 34

pilaster clamps and taper tie assembly

Question 35

temporary bracing must be designed to withstand?

Answer 35

winds up too 100km/h

Question 36

Columns have what?

Answer 36

steel anchor plates cast into them and are connect to the supports with anchor bolts

Question 37

what is placed between the column plate and the concrete base?

Answer 37

layer of expansivegrout

Question 38

how are beams and girders attached to columns?

Answer 38

welded with steel angle iron and precast steel members

Question 39

describe cored slab panels

Answer 39

used too build floors and roof, hollowed out and can support heavy loads and span long distances

Question 40

topping slab is between ____ and ____ thickness

Answer 40

30mm and 150mm

Question 41

What is a Vault used for?

Answer 41

housing electrical or mechanical connections

Question 42

explain acrylic base calking

Answer 42

applied over damp surface and cures when solvent evaporates, can be painted

Question 43

polysulfide base (rubber base) is used for?

Answer 43

sealing pre-cast tilt up panels

Question 44

Butyl Base calking is used for?

Answer 44

sealing door and window frames and can be painted

Question 45

backer rod should be ___% thicker then the joint

Answer 45

25

Question 46

what two calkings should not be used together?

Answer 46

Polyurethane and Polystyrene

Question 47

what is the rate of movement with slip forms?

Answer 47

8-18 inches per hour

Question 48

what are the three main components of a slip form?

Answer 48

Slipform yoke, hydraulic jack, jacking rod

Question 49

what do yolks support?

Answer 49

the walers and the walers support the sheathing

Question 50

wall forms are how tall?

Answer 50

only 36-42 inches tall

Question 51

how long has the concrete been in the form before being exposed too the weather?

Answer 51

3 hours

Question 52

what type of concrete is used for slip forms?

Answer 52

Fast setting mix using high range water reducer and accelerator

Question 53

how thick are the lays of concrete being placed

Answer 53

approx. 12 inches

Question 54

gravity dams are built in what size blocks?

Answer 54

blocks 70 feet wide and 7 feet thick

Question 55

what seals the joints between blocks?

Answer 55

a continuous ruler gasket 1 inch thick

Question 56

what type of anchors are used

Answer 56

long anchors with pig tails. 1 1/4 inch diameter

Question 57

the cantilevered truss forms are spaced?

Answer 57

12 feet apart

Question 58

what is used to align the panel?

Answer 58

panel aligning bolts ant the bottom end of the form

Question 59

what type of cement is used for dams?

Answer 59

Type 10, large aggregates, and fly ash to reduce the heat of hydration