Foundation Supports

Question 0

What are the requirements for the floor of a heated crawl space?

Answer 0

Must be covered with 50 mm of concrete or an alternative ground cover

Question 1

How does a crawl space foundation differ from a full basement?

Answer 1

A crawl space is not suitable as a living space.

Question 2

Is the space below a surface foundation slab usable for storage?

Answer 2

No. The space below a surface foundation is compacted soil.

Question 3

Which type of foundation is usually used for an unheated detached garage?

Answer 3

Slab on grade. A single layer of concrete placed at or near ground level.

Question 4

A basement slab is an example of a slab on grade. T or F

Answer 4

False. Basements Slabs are normally placed below grade.

Question 5

What is a slab on grade foundation?

Answer 5

A single layer of concrete placed at or near ground level.

Slabs supported on earth.

Location of slab is at or near finished grade.

Question 6

What kind of settlement must you attempt to prevent in order to avoid problems with door frame alignment (racking) or cracked walls?

Answer 6

Unequal or differential settlement

Question 7

What must be done to fill an existing trench below a footing?

Answer 7

Easiest remedy is to fill the trench with concrete

Question 8

Under what circumstances can footings be eliminated?

Answer 8

Footings can be eliminated if the foundation is built on solid rock

Question 9

What is a basement slab (slab on ground)

Answer 9

Basement slabs are normally placed below grade, above the footings and between the foundation walls.

Question 10

What is a grade beam foundation

Answer 10

A grade beam foundation is made up of structural concrete beams at or near finished grade. Supported by a series of individual concrete piles, piers or pad footings that extend below the frost line.

Question 11

The maximum depth of excavation that is allowed for a straight cut without shoring is _______ metres.

Answer 11

1.5

Question 12

Minimum widths of strip footings supporting exterior walls is 1 floor _____, 2 floors ______, and 3 floors _____.

Answer 12

250, 350, ,450

Question 13

Minimum width of strip footings supporting interior walls. 1 floor _____, 2 floors _____, 3 floors ______.

Answer 13

200, 350, 500

Question 14

Step footings should have a _____ to ______ ratio

Answer 14

2 to 1

Question 15

The Maximum vertical step length for step footings is _______.

Answer 15

600 mm

Question 16

The minimum horizontal measurement for step footings is ______.

Answer 16

600 mm

Question 17

Footings shall be not less than _____ thick.

Answer 17

100 mm

Question 18

A footing is 200 mm thick. How far would the projection of the I reinforced footing be?

Answer 18

200

Question 19

A continuous footing that also supports a number of columns is called a _________.

Answer 19

Combined footing

Question 20

Which type of soil is recommended as a base for footings?

Answer 20

Footings should rest on in disturbed soil, rock or compacted fill.

Question 21

What is the minimum width for the perimeter (strip) footing for a two storey building?

Answer 21

350 mm

Question 22

How much wider must a strip footing be to support each storey of interior walls in masonry construction?

Answer 22

100 mm

Question 23

What is the minimum depth below finished grade for a foundation in the province of alberta?

Answer 23

1.2 m (below frost level)

Question 24

If an excavation under footing is made too deep, what corrective measures must be taken?

Answer 24

Placing more concrete, thereby making the footings much thicker.

Question 25

Differences of up to ____ are within acceptable limits for the footings.

Answer 25

25 mm

Question 26

The tolerance for out of square once of the actual building corners after the concrete have set is ______.

Answer 26

Less than 3 mm or 1/8.

Question 27

Which type of footing is used to support the columns in a residential building?

Answer 27

Isolated or pad footings

Question 28

Pad footings for steel teleports are typically square and approximately______ by ______ in size.

Answer 28

600 mm by 600 mm

Question 29

To be most effective, reinforcing rods should be placed in the _______ ______ of the footing and at least _______ mm up from the earth and away from side forms.

Answer 29

``` Bottom third 50 mm (2") ```

Question 30

The most common method of attaching a concrete foundation wall to the footings is by using a _______.

Answer 30

Keyway

Question 31

The wall can also be tied to the foundation. By embedding short lengths of rebar (steel dowels) vertically into the footing. They are normally _____ mm o.c.

Answer 31

400 mm

Question 32

Maximum slump allowable for footings is _____ mm

Answer 32

150 mm (6")

Question 33

If concrete is to be placed on alkali, _________ concrete must be used.

Answer 33

Sulphate-resistant

Question 34

Never place concrete on frozen ground. T or F

Answer 34

True

Question 35

Concrete must be protected from freezing for a minimum of _____ days.

Answer 35

Four

Question 36

Which style of footing is used to support an interior bearing wall?

Answer 36

"T" footings

Question 37

Most lending institutions require that a _____ ______ _______ be submitted before any funds are released. A licensed land surveyor must prepare and sign this report.

Answer 37

Real property report

Question 38

What is the function of a template as it refers to anchors?

Answer 38

A template is used to locate and hold anchors.

Question 39

To be most effective, rebar should be placed ______ the width of footings.

Answer 39

Across

Question 40

The top surface of the footings must be level and finished to a smooth surface with a steel trowel. True or false?

Answer 40

False. The top surface is brought to level by striking the concrete with a short length of 2x4 and floating with a wood or magnesium flat.

Question 41

What is a pile?

Answer 41

A pile is used to support a structure by transferring the buildings loads to a suitable bearing surface below frost.

Question 42

What is a pier?

Answer 42

Although similar to a pile, is normally above grade and usually rests on a footing or pile. The centre supporting members of a bridge are called piers.

Question 43

What is a grade beam foundation?

Answer 43

A series of piles or pads that support a concrete beam or girder around the perimeter of the building.

Question 44

What are the minimum footing area for columns spaced 3 m on centre for 1 storey, 2 storey and 3 storey builders?

Answer 44

0. 4 0. 75 1. 0

Question 45

A heated crawl space must have a ground cover?

Answer 45

Yes

Question 46

How does a bearing pile support itself?

Answer 46

Extending down to stable bearing