Glencoe: 17

Question 1

How do you check Land Elevations:

Answer 1

Set up level or transit.
Make sure all leveling rod locations can be seen through telescope.
Read where horizontal crosshair in telescope croses the rods.

Question 2

How do you measure the difference of elevation between two locations.

Answer 2

Place transit or level between two rods. Check the levels of both rods and subtract to figure out the difference.

Question 3

How do you measure the elevation different in two remote locations with a mound or obstruction in the way:

Answer 3

Set up intermediary rod readings and place the transit or level in between them.

Question 4

Differential leveling:

Answer 4

The process of determining the differences in elevation between points that are remote from each other.

Question 5

Foundation wall footings must:

Answer 5

rest on firm soil below the front line.

Question 6

Footings:

Answer 6

continuous concrete pads that support the foundation wall.

Question 7

Depth of frost line varies according:

Answer 7

to local climate and is given in local buildings codes

Question 8

What determines how deep an excavation must be

Answer 8

the frost line

Question 9

After knowing the frost line, how do you determine where to start the depth of the excavation:

Answer 9

The highest point on the perimeter of the excavation as the reference point.

Question 10

Both graded and ungraded sites use what to determine excavation depth?

Answer 10

the highest point on perimeter of excavation

Question 11

Good drainage is ensured if

Answer 11

sufficient foundation height is allowed for the sloping of the finish grade

Question 12

Finish grade is the

Answer 12

level of the ground when grading is completed.

Question 13

Foundation walls of X high are necessary for full basements and Y is common

Answer 13

7’-4”

8’

Question 14

The top of foundation wall must be at or above

Answer 14

a minimum set by code

Question 15

The minimum the top of a foundation wall must be above is usually

Answer 15

8” above finished grade

Question 16

Why must foundation wall be a certain height above finished grade?

Answer 16

it allows siding and framing members to be protected from soil moisture. And it makes termite activity visible.

Question 17

Crawl spaces should have enough height to

Answer 17

allow for inspection of termite damage and allow plastic soil covers to be installed

Question 18

What do soil covers do?

Answer 18

reduce the effect of ground moisture on framing members.

Question 19

How many inches should be between undersides of the joists and the highest point of ground?

Answer 19

usually 18”

Question 20

If the ground beneath the structure is excavated or is otherwise lower than the outside finished grade:

Answer 20

measures should be taken to ensure good drainage

Question 21

Any variation from the standard construction practices

Answer 21

increases the cost of the foundation and footings.

Question 22

Before excavating for a new home, subsoil conditions should be determined by

Answer 22

test borings or by obtaining soil samples in some other way.

Question 23

Why should sub soil conditions be determined?

Answer 23

Helps the excavators to determine whether any special precautions will be necessary. Unusually soft or hard soil conditions may call for special excavation techniques or equipment.
Helps determine bearing capacity and porosity.

Question 24

Bearing capacity is

Answer 24

a measure of how well the soil can support weight of house.

Question 25

positive drainage for the X

Y inches of fall min

Answer 25

first 10 feet

6 inches of fall min

Question 26

Added fill brings

Answer 26

the finished grade above the original grade and ensures drainage way from the house.