G-3

Question 1

When can footings be cast in excavated forms?

Answer 1

when the sides of the excavation are stable enough not to collapse into the footing before or during concrete placement

Question 2

What type of footing is typically used under a concrete wall?

Answer 2

Strip footing

Question 3

Name four components of wall forming

Answer 3

sheating
studs
walers
ties

Question 4

Explain how strap ties are secured to the studs

Answer 4

nailed to the studs on alternate sides

Question 5

Explain how the forces of the fresh concrete reach the wall form tie

Answer 5

concrete preses against the sheating which presses against the studs or walers, which transfers to the wedges and then to the ties

Question 6

What size of material is used for the walers and studs when using single or double waler form systems?

Answer 6

2x4

Question 7

What controls the maximum spacing of the students in a double waler system?

Answer 7

amount of allowable sheathing deflection

Question 8

What wall farming system doesn’t need to be stripped?

Answer 8

insulated concrete forms (ICF)

Question 9

Describe a pilaster and state its purpose

Answer 9

A pilaster is a thickening in the wall resembling a column. It is used to support the extra load from a column above.

Question 10

Describe a corbel and state its purpose

Answer 10

A corbel is a widening in a wall creating a ledge or thickened top. This may be for structural or for decorative purposes.

Question 11

When would FRP be used to build column forms?

Answer 11

Architectural concrete

Question 12

What is the most common column shape?

Answer 12

Round, rectangular

Question 13

Why are there three size for the same nominal diameter of fibre tube?

Answer 13

Transportation purposes

Question 14

When would steel column forms be used?

Answer 14

When there will be many re-uses

Question 15

How can the concrete column’s finish be improved when using fibre forms?

Answer 15

Use a plastic liner

Question 16

What type of materials are conical column capital forms made from?

Answer 16

metal or FRP

Question 17

Which form requires no banding or column clamps

Answer 17

round fibre

Question 18

How are colum forms held together?

Answer 18

Ties, clamp, banding

Question 19

How are column forms usually adjusted to the exact required height?

Answer 19

shim the bottom

Question 20

What is the advantage of having all side of square column form cut to the same size?

Answer 20

sides are interchangeable

Question 20

What order should the carpenter use when planning the wall form layout?

Answer 20

Corners and T-panel locations, then steps, full panels, and infill

Question 21

For what height of foundation wall does WorkSafeBC OHS Regulation require certification by a P.Eng?

Answer 21

4m (13 ft) and higher

Question 22

Is a P.Eng required to certify gang form drawings?

Answer 22

Yes

Question 23

What is the maximum height of a step in a footing?

Answer 23

600

Question 24

What is architectural concrete?

Answer 24

Concrete surfaces that are to be left expose to view

Question 25

What is a serious drawback to using fibre form tubes for columb forms?

Answer 25

They will only stand up to being wet for a limited time

Question 26

If the design required to be certified by a P.Eng what must inspection be done by the P.Eng?

Answer 26

Immediately before placement of concrete or other intended loading

Question 27

List the requirements for footings

Answer 27

Positioned accurately Correctly dimensioned Level

Question 28

What is the maximum vertical step allowed for a step footing?

Answer 28

600m or 24"

Question 29

Once simple outside footing forms are in place, how are the inside forms postioned?

Answer 29

using cleats as spacers and staked in place

Question 30

What are the first few steps before placing wall forms?

Answer 30

Strip off the cleats, sweep the footings clean, mark the foundation wall location with chalk lines

Question 31

How is the bottom plate fastened to the concrete footings?

Answer 31

Hand nailed if the concrete hasn't cured, with powder-actuated fasteners if it has

Question 32

Which wall forms normally get placed first?

Answer 32

Outside corners

Question 33

Where is the bracing usually placed?

Answer 33

On the outside forms (usually to strongbacks)

Question 34

Why is the construction of an outside corner of a concrete wall form so important?

Answer 34

Because there are concrete pressures from two directions

Question 35

Why must high-quality forms be used for architectural concrete?

Answer 35

Because the concrete will be left exposed as the wall final finish

Question 36

How many times can concrete forms be reused if properly looked after? What should be done to prolong the forms/ usable lifespan.

Answer 36

Hundreds of times. Do not be overzealous when nailing or stripping.

Question 37

What are kickers used for when forming single and double waler walls?

Answer 37

To lock the outside corners

Question 38

Explain how to install a wedge for a double waler

Answer 38

The wedge should be installed so that the snap-tie button is midway between the walers.

Question 39

How are waler bars removed when stripping quick strip forms?

Answer 39

Hammer the ties parallel to their width to break them at their break back point

Question 40

What is attached to rough door and window bucks to keep the finished door or window frames from moving after the frames are installed?

Answer 40

Reverse keys

Question 41

Why is a buck designed to be slightly larger than the frame to be installed?

Answer 41

To allow for shimming of frame at time of installation

Question 42

Why shouldn't any of the sides, tops, or bottoms of bucks run the full length of the buck?

Answer 42

To accommodate ease of stripping

Question 43

What is attached to a wall form to create a pocket for a beam?

Answer 43

A blockout

Question 44

Describe how to set a bulkhead in a steel form

Answer 44

Braces to the ties outside of the bulkhead

Question 45

How is a bulkhead made easier to strip?

Answer 45

Made of lumber instead of plywood, very important when dowels protrude through the bulkhead

Question 46

How is the height of the finished concrete wall indicated if a level strip is not used?

Answer 46

Driving nails into formwork along a chalkline at the desired pour height

Question 47

Name three uses for rustication strips

Answer 47

Decorative, use as a levelling strip to hide a construction joint, use to create a control joint

Question 48

What type of tools should be used to pry forms loose when stripping?

Answer 48

wood wedges, wood bars

Question 49

Why must rustication be removed very carefully?

Answer 49

so not to damage green concrete

Question 50

Explain the stripping process for foundation forms.

Answer 50

Orderly and safely, remove cleats, 2x4s walers and ties, sheathing

Question 51

Explain how to strip and lift gang form panels.

Answer 51

Use fall protection, partially strip, attach tagline and crane, tension crane, finish stripping, clear area

Question 52

Explain how to strip and lift slab tables

Answer 52

Use fall protection, lower jack onto dollies, attach lines to core, roll out 1/4 way, attached first pair of slings, roll out and attach second pair of slings, detach lines to core, hoist out