Lare Section 4

Front 1

What is stripped during site preparation

Back 1

Toosoil- 4-6 inches and stockpiled for later use, growing medium

Front 2

What needs to be done before final payment can be issued?

Back 2

Final clean up, final inspection passed, mechanics lien affidavits must be submitted

Front 3

Excavation side slopes are set at a

Back 3

2:1

Front 4

What is the correct application forstructural fill

Back 4

Placed under buildings in 6" lifts rolled to 95% density not to exceed 3'

Front 5

When do you begin to install pipes and storm sewerbasins

Back 5

After cut and fill is complete- so outfalls can be connected to building drains. Suffiecnt soil cover is necessary to prevent crushing

Front 6

What is the min soil cover for small pipes

Back 6

30"

Front 7

Electrical lines should be buried at

Back 7

2'

Front 8

What utility has the shallowest depth and is last to be installed

Back 8

Irrigation 12-18"

Front 9

When does finish grading happen

Back 9

After major plantings and other activities that require hauling have been complete

Front 10

Pavement structures consist of 2 courses, base and wearing. What is the base course?

Back 10

Aggregate that extends beyond the pavement edge for drainage and support

Front 11

A single aggregate course is typical for

Back 11

Lightpedestrian pavement

Front 12

How thick is the base?

Back 12

4-6"

Front 13

What course is needed in addition for pavement supporting vehicles

Back 13

Sand on top of agg

Front 14

What is a wearing surface

Back 14

Pavement - concrete ext

Front 15

How many courses for asphalt

Back 15

2

Front 16

Why do trees need grade stakes during early installation

Back 16

In ensure that tree ball will align with with final topsoil

Front 17

Tree pits should be how much larger than the Tree ball?

Back 17

2-3' wider

Front 18

The tree should sit how much higher than finished grade?

Back 18

1-2"

Front 19

At the end of cut and fill subgrades may be how much under the finished grade number

Back 19

12-18"

Front 20

Minimum dimension for 2 people walking side by side

Back 20

5'

Front 21

Minimum dim for width of a seat

Back 21

1'-3"

Front 22

Minimum for a public walkway

Back 22

8'

Front 23

Typical height of a small truck

Back 23

5'-2"

Front 24

Typical width of a car

Back 24

6'

Front 25

Length of a typical car

Back 25

15'

Front 26

Least effienct layout for parking

Back 26

30 degree

Front 27

Microclimates

Back 27

Front 28

Implementing gravity sewers will eliminate the need for

Back 28

Pumping stations

Front 29

Objects should not protrude above how many inches because it will not be picked up by a typhlo cane

Back 29

27"

Front 30

How do you design a seatwall to drain

Back 30

Pitch it back 1%

Front 31

What are expansive soils

Back 31

Soils and soft rock that shrink and swell because of changes in the moisture content

Front 32

When roads or structures are placed on expansive soils what 2 problems can occur

Back 32

Cupping or downwarping

Front 33

4 properties of expansive soils

Back 33

1. Soft puffy appearance of clay soil when dry 2. Sticky when wet 3. Open cracks in dry clay 4. Highly plastic and weak when wet, but rock hard when dry

Front 34

Ratio of a slope is expressed

Back 34

Horizontal to the vertical 4:1

Front 35

Max cross slope of a sidewalk

Back 35

4%

Front 36

Max mowed slope

Back 36

3:1

Front 37

Planted slopes and beds

Back 37

10%

Front 38

Roadway design is established by who

Back 38

American Association of State Highway and Transportation Officials AASHTO

Front 39

Roadway design consists of two major phases

Back 39

1. Alignment of road, horizontal and vertical direction 2. Grading the adjacent landscape to the road edge

Front 40

Do side slope of a seals affect the rate of flow

Back 40

No

Front 41

Swale- if velocity exceeds ----' per second, gravel, crushed stone, or riprap should be used as erosion control

Back 41

6'

Front 42

convex

Back 42

Mountain

Front 43

Concave

Back 43

U caved in

Front 44

Culvert

Back 44

A tunnel carrying a stream or open drain under a road

Front 45

Bowel force mains move water

Back 45

Under pressure

Front 46

Risotto tread ration

Back 46

2:1, 6" riser and 12" tread

Front 47

What is the key cause of erosion

Back 47

Water

Front 48

Max crossslope for a parking lot

Back 48

10%

Front 49

To re- establish the same type of vegetation after clearing and grubbing, what can be done?

Back 49

Site plant material can be chopped up and mixed with topsoil

Front 50

Order of site preparation

Back 50

1. Clear and grub 2. Topsoil stripping 3. Excavation and prep of subgrade

Front 51

What % should fill forplanted areas be compacted?

Back 51

Only enough to retain 30% minimum porosity

Front 52

Fill material-

Back 52

Should be laid down in 6-8" layers compacted and tested to conform with specs

Front 53

Where can you find General soil data

Back 53

Usda department of agriculture and Nrcs national resource conservation service

Front 54

How do you test to depth of bedrock

Back 54

Rod test- boring made by a power auger

Front 55

Review cut and fill page 320-31

Back 55

Look up

Front 56

What is it called when rock is blasted and the particles create more space

Back 56

Swell

Front 57

Cut and fill - the average and method is used for

Back 57

Estimate volumes of linear elements such as roads and highways

Front 58

Cut and fill- what method is most used by landscape architects

Back 58

Contour method- accurate for making final grading adjustments and cost

Front 59

Does the average slope of the watershed affect the amount of runoff generated?

Back 59

Yes- rainfall on a flatter surface sheds more slowly

Front 60

Would you see less or more runoff with a complex surface

Back 60

Less. Urbanization has a tendency to simplify surfaces = more runoff

Front 61

What is the principle determinant of infiltration

Back 61

Soil type

Front 62

Water quality protection systems are usually designed to teat

Back 62

1.25" rainfall or a 2 year storm

Front 63

Where can you find info on rainfall data and flow data

Back 63

Municipal and county engineering departments or NRCS

Front 64

High water tables and barred limit infiltration. What strategies would work well in these aes

Back 64

Constructed wetlands, wet ponds, and wet swales

Front 65

How do you define a watershed boundry

Back 65

Start at outlet and move uphill in both directions at right angles to the contours

Front 66

Design performance criteria should include

Back 66

Peak discharge, runoff volumes, watershed infiltration capacity, ground water recharge, and water quality

Front 67

Spot elevations on corners of buildings are how much lower than the FFE

Back 67

1/2"

Front 68

Spot elevation on stairs should be where?

Back 68

Top and bottom. 6"

Front 69

Cross slope is generally what %

Back 69

1%, no more than 2%

Front 70

How deep should a swale be?

Back 70

1'

Front 71

Acre how many feet

Back 71

43560 square feet

Front 72

Water quality protection systems typically is designed to treat how much water?

Back 72

1.25"

Front 73

Where is it best to place impervious surfaces in a drainage pathway

Back 73

At the top, more time for runoff to infiltrate on the way down

Front 74

Why does the top one need to be connected to a sewer system and the bottom one does not?

Back 74

The bottom image is on a high point out of the 100 year flood plain

Front 75

The center for watershed protection reccomends a ----- setback of undisturbed trees on either side of a stream + a ------ setback of managed vegetation area

Back 75

25 & 50-100

Front 76

Major flood protection designs to what storm?

Back 76

100 year

Front 77

What is velocity

Back 77

Distance traveled over a certain time. Feet per second

Front 78

What is discharge

Back 78

Volume traveling at said velocity. Cubic feet per second

Front 79

Does time of concentration become shorter or longer with the introduction of more impervious surface

Back 79

Shorter. More runoff, water moves quicker

Front 80

A frequency of a storm is also called the

Back 80

Return period

Front 81

What is intensity?

Back 81

The rate at which the rain falls

Front 82

Side slopes for a trapidozoidal channel should be

Back 82

2:1

Front 83

Storm sewers are usually designed to what storm

Back 83

10year

Front 84

Water storage provide provides where in the watershed will reduce the amount of downseam flooding

Back 84

Upper 1/3

Front 85

Minimum cover over culverts

Back 85

1'

Front 86

Detention =

Back 86

Drain. Within 72 hours

Front 87

All ponds should have 2 types of outlets

Back 87

1. Principal spillway outlet

2. Emergency spillway alternative release

Front 88

What elevation is the emergency spillway set at

Back 88

6" above the water surface of the principal spillway

Front 89

What are 3 ways to remove sediment from water

Back 89

Forebay, storage basin, outlet structure

Front 90

Slopes of a detention pond should be what due to safety

Back 90

4:1

Front 91

In a dry detention pond where is the pipe located

Back 91

Bottom of pond

Front 92

What is another name for recharge trench

Back 92

French drain

Front 93

The infiltration rock should be fully invaded in what to prevent sediment plugging

Back 93

Filter fabric

Front 94

Infiltration beds are what

Back 94

Gravel storage trenches

Front 95

What are infiltration wells used for

Back 95

Collect water from roof downspout connections. Page 330-48

Front 96

Should you use porous pavment for parking lots?

Back 96

No - contaminants from autos flow directly into recharge trench