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Landscape Design > Readings > Flashcards

Readings Flashcards

1
Q

Ditch depth

A

2 ft.

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2
Q

Swale depth

A

depending on the amount of water it carry

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3
Q

Slope of residential street

A

8%

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4
Q

How to ensure structure will not fall from sliding?

A

By determining:
Bearing capacity
Friction coefficient

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5
Q

Factors on choosing retaining structures?

A

function
aesthetics
cost
life expectancy

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6
Q

Significant factors for selecting plant material and design irrigation system

A

growing season of plants
amount and timing of precipitation rates
microclimate

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7
Q

Factors that must be considered if the irrigation source is surface water

A

pumping reqts
filtration of water
seasonal changes in water availability

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8
Q

Factors that must be considered at wells (because high water tables are good source of irrigation water)

A

pumping reqts
water availability
purity of water

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9
Q

Liquid effluent and is treated by sewage plant; used at large landscapes

A

Recycled water

addtl info: it has N, P, K (fertilizer)

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10
Q

What are these?

Drain inlets, gutters, infiltration systems

A

Water collection devices at roads.

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11
Q

Is detendtion pond recommended at parking area?

A

Yes.

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12
Q

It affects irrigation design and scheduling

A

Ability of soil to hold moisture

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13
Q

It influences what type of irrigation system to be used

A

Percolation rates

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14
Q

What type of irrigation system applicable for highly permeable soils?

A

Sprinkler

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15
Q

What type of irrigation system applicable for impermeable soils?

A

Drip system

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16
Q

This is needed in order to know the amount of rainfall during growing season; also used for calculating volumes for cisterns

A

Annual precipitation data

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17
Q

Playground protective sufacing ht. and materials

A

ht. : 300 mm

materials: wood chips, mulch, sand, pea gravel

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18
Q

Playground should have shock absorbing material, what is the fall zone ht.?

A

1800 mm

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19
Q

Playground structures spacing

A

3.6 m

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20
Q

Camping and picknicking area size

A

for every 75-100 campers: 14-17 hectares

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21
Q

Family size campsites

A

4m x 5m

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22
Q

Spacing of picnic area clustered 10-100/unit

*50 units/hectare is desirable

A

10 m

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23
Q

Untreated household wastewater except toilet waste. Also, kitchen sink, or from manufacturing or processing

A

Greywater

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24
Q

Pipe for irrigation

A

Pvc of flexible PE tubing

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25
Q

Competition pool size for Interscholastic?

A

23 m

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26
Q

Competition pool size for International?

A

50 m

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27
Q

Pool lanes width

A

2.1 m

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28
Q

Pool Stripes

A

0.25 m

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29
Q

Drinking water sources

A

groundwater
surface water
rainwater

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30
Q

Causes of contamination of public wells

A

septic field
agricultural practices
land use activities

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31
Q

8m width

very restricted: flood control, utility r.ow., foothpath

A

Streamside zone

32
Q

15-30 m width depending on stream order, slope, and 100-yr floodplain, recreational uses, stormwater, bikepath, tree removal

A

Middle zone

33
Q

filter backyard run off, 8 m (min. setback to structures), unrestricted: residential uses, garden, yard wastes, etc.

A

Outer zone

34
Q

Critical natural resources and should be inventoried, and protected from urbanization

A 
plant and animal habitat
surface water resources
groundwater recharge areas
mining resources
prime farmland
35
Q

Regional and landscape planning strategies

A

focuses at urban land uses
minimize sprawl to prevent land fragmentation
reduce infrastracture and transportation costs

36
Q

natural drainageways should be protected, should sustain native plant, and animal habitat at region

A

Urbanization

37
Q

Used as strategy for controlling regional growth

A

Sanitary sewer, and public water service

38
Q

Maximum water table at cemetery

A

4.5 m

39
Q

Cemetery land allocation for underground interment is 50%, what is the depth of excavation?

A

1.5 m

40
Q

Cemetery major r.o.w.

A

8 m
breakdown:
6 m-carriageway
1 m both sides-sidewalk

41
Q

Cemetery minor r.o.w.

A

6 m
breakdown:
4.5 m-carriageway
1 m both sides-sidewalk

42
Q

Cemetery supply of water per capita

A

40 l per capita/day

43
Q

Cemetery sewage

A

septic tank

44
Q

Cemetery lamp post spacing

A

distamce at 100 m (max.)

45
Q

Cemetery parking slot land allocation

A

5% of gross area

46
Q

Topsoil strip depth

A

4-6 inches

47
Q

Angle of repose for clay

A

35°

48
Q

Angle of repose for sand, dry

A

25°

49
Q

Angle of repose for sand, moist

A

37°

50
Q

Small urban parks size

A

2-2.4 hectares

51
Q

Ramps should not exceed at slope percentage of?

A

8.33%

52
Q

Walkways slope (max.)

A

5%

addtl. info: more than 5% is considered a ramp.

53
Q

Dropped curb is the lowest part of road, what is the ht.?

A

25 mm

54
Q

Swale centerline and side slopes vary to?

A

local precipitation rates and soil texture

55
Q

Common threats at grading (bet. adjacent landscape to larger region)

A

source of pollution
changes at water table
destruction of wildlife cover
migration corridors

56
Q

Grading key tasks:

A

achieve design’s visual and cultural objectives
minimize iverall land disturbance
small footprint only-means less erosion during construction

57
Q

Playfield

A

Area grading

58
Q

Buildings

A

Nodal grading

59
Q

Roads, swales

A

Linear grading

60
Q

Factors on site (existing) that may limit proposed developments

A

surface rock
soil bearing capacity
water table level

61
Q

required at buildings, surrounding spaces, to improve accessibility, and save existing large trees

A

Retaining structures

62
Q

What govern slopes?

A

structural reqts of materials
issues of accessibility
angle of repose

63
Q

Should have facilities for production and dissemination of goods

A

Industrial park

64
Q

Contains separate office bldgs., supporting uses (e.g. restaurants), open space

A

Office park

65
Q

It is a hybrid bet. industrial and office, light manufacturing, and warehousing

A

Business park

66
Q

Pond volume formula

A

V= 1/3 DA

where:
V= volume of water in cu. m
D= max. pond depth in m
A= surface area of pond in sqm.

67
Q

It should be designed with forebay, storage basin, outlet structure. It is a sediment removal (during construction)

A

Wet detention pond

68
Q

Alternatives of infiltration

A 
infiltration basins
bioretention ponds
recharge trenches
infiltration beds (dry; designed to leak at soil)
infiltration wells
69
Q

june to september monsoon
heavy rain shower
warm and humid air

A

Habagat/Southwest monsoon

70
Q

Chief causes of infiltration device failure

A

Compaction and sedimentation

71
Q

Infiltration + biological processing of pollutants

A

Bioretention pond

72
Q

Emergency spillway invert elevation

A

150 mm (above principal spillway)

73
Q

Depth of pond to sustain aquatic life for stormwater/irrigation pond

A

2-3 m

74
Q

Depth of small garden ponds

A

450 mm

75
Q

Depth of electrical lines

A

600 mm

76
Q

Depth of irrigation lines

A

300-450 mm

Landscape Design (4 decks)

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