TERMS Flashcards
1
Q
the ideal capacity of road
A
2000 veh/hr
2
Q
no. of veh/unit distance occupying a section
A
density
3
Q
no. of veh moving in a specified direction on a given lane or roadway
A
traffic volume
4
Q
ability to accommodate traffic volume
A
traffic capacity
5
Q
time interval between the passage of successive veh
A
time headway
6
Q
distance between successive veh
A
space headway
7
Q
arithmetic mean of speed of veh
A
time mean speed
8
Q
harmonic mean of speed of veh
A
space mean speed
9
Q
max speed that can be attained
A
mean free speed
10
Q
transmission of sensations received to brain
A
perception time
11
Q
after perception, formation of new thoughts
A
intellection
12
Q
linked with the 2 stages, perception and intellection, like fear and anger
A
emotion
13
Q
taking decision
A
volition
14
Q
distance travelled during total reaction
A
lag distance
15
Q
process of reaction of driver
A
P I E V
perception
intellection
emotion
volition
16
Q
application of brake
A
braking distance
17
Q
minimum sight distance to stop
A
stopping sight distance
18
Q
minimum sight distance to maneuver without colliding opposing veh
A
passing sight distance
19
Q
hypothetical wave, largest 1/3 of height
A
significant wave
20
Q
datum line
A
mean lower low water (MLLW)
21
Q
length between 2 consecutive crests
A
wavelength
22
Q
distance of highest to lowest in wave
A
wave height
23
Q
highest point in wave
A
crest
24
Q
lowest point in wave
A
through
25
groundwater table rises
bearing decreases
26
used to measure undrained shear strength
shear vane
27
Sudden change of water level
hydraulic jump
28
pressure surge or wave
water hammer
29
sum of vertical component of all intergranular contact force
effective stress
30
sudden drop
liquefaction
31
upstream to downstream
flow line
32
same magnitude and direction
uniform flow
33
flow not changed in time
steady flow
34
V=2m/s, critical time per unit length
1sec
35
flow of water in pipe takes place from ___________________
higher energy to lower energy
36
present overburden pressure, unit weight times height
geostatic pressure
37
mole attraction of like particles
cohesion
38
mole attraction of unlike particles
adhesion
39
hydrometer used for
specific gravity
40
formation of spray of liquid drops
weber number
41
piezometer is for
very low pressure
42
manometer is for
pressure in channel's pipe
43
manning's formula for
head loss due to friction of open channel
44
avoid interruption of flow in syphon
summit
45
rise of liquid, revolving cylinder
same as the depression of liquid at the axis of rotation
46
fluids change the volume under external pressure
compressibility
47
shear stress directly proportional to
shear strain or rate of shear strain
48
total energy gradient is the graphical churva
AOTA
49
total pressure on TOP closed cylindrical, 100% filled
radius^4
50
hydraulic grade line
may be above or below the center of conduit
51
specific weight of sea water
AOTA
52
clays are more porous than sands
AOTA
53
internal molecular attraction
more in well compacted clays
54
quantity seepage of water through soil is proportional to
both A and B
55
effective size of particles of soil
D10
56
coefficient of compressibility
strain to stress
57
failure plane ____ carry max shear stress
does not
58
increases with increase in liquid limit
compression index of soil
59
lateral support excavation
caisson
60
consist of 3 layer of wood churva
plywood
61
1 layer of wood only
glulam
62
type of slab, column chuchu
flat slab
63
type of slab, kung walang column chuchu
flat plate
64
force is intensity of pressure times centroid of area
AOTA
65
centroid of submerged surface coincides with center of pressure
surface is horizontal
66
soil mass is in plastic equilibrium if
on the verge of failure
67
practical fluids posses
AOTA
68
soil moisture driven off by heat
hydroscopic water
69
seepage force in soil
AOTA
70
liquid particle has definite path, adjacent don't cross each other
stream line flow
71
soil is expansive if:
-PI is ___ or greater
-soil particles pass seive no 200 is more than ___
-exceed swell pressure by ____
- 15%
- 10%
- 20%
72
excavation in excess of ____ depth shall have shoring
1.5m
73
minimum of ___ test for every 500m^2 with compaction
3
74
volume is more accurate. only volume has units of time
true
75
treatments
realigning
76
B/C analysis
insurance chuchu
77
assumptions
coefficient of friction
78
topographic surveys
I,II,III,V
79
green's theorem
service area
80
factors affecting experiment chuchu
natural, instrument, and personal
81
rapid curing of asphalt
petroleum chuchu
82
lifting capacity of crane decrease with ____
increase in load radius
83
space mean speed is always _______ to time mean speed
less than or equal
84
absolute viscosity at 140*F
viscosity grading
85
penetration standardized needle, 77*
penetration
86
conform gradual movement
flexibility
87
repeated wheel loads
fatigue resistance
88
resist tire slipping or skidding
skid resistance
89
resistance to passage of water and air
impermeability
90
allow passage of water and air
permeability
91
ease of placement and compaction
workability
92
test for the workability of concrete
slump test
93
maximum and minimum of slump test
max= 100mm, 4in
min= 25mm, 1in
94
interconnected cracks, small blocks
alligator cracks
95
forming thin layer, migrated upward
bleeding
96
disintegration of pavement in limited area
blow-up
97
cracks perpendicular
cold cracking
98
plastic deformation by ripples across the pavement
corrugation
99
separation of pavement
cracking
100
break up of pavement
disintegration
101
liquid asphalt draining
drain down
102
different in elevation of edges of 2 adjacent slabs
faulting
103
longitudinal cracking
lateral spreading cracking
104
excessive displacement under traffic
plastic instability
105
aggregates surfaces become smooth and rounded
polishing
106
bowl-shaped hole in pavement
pothole
107
bellows-like movement of pavement
pumping
108
gradual, progressive loss of surface by loss of fine
raveling
109
follow the crack, joint pattern of layers
reflective cracking
110
channelized depressions occur in normal paths
rutting
111
peeling away of upper layer
scaling
112
pushing the pavement around, resulting in bulging
shoving
113
crescent shaped crack
slippage cracking
114
breaking or slipping of pavement
spalling
115
alternating areas, uneven spraying
streaking
116
asphalt not sticking to aggregate, water susceptibility
stripping
117
slow setting pavement
difficult to roll or compact
tender mix
118
local upward displacement
upheaving
119
bituminous concrete
mixture of asphalt binder and mixed aggregate
hot mix asphalt concrete (HMAC)
120
stopping sight distance of loaded ship is _______ times the ship's length
7 to 8
121
more than 1 ship accommodated in berth, clearance is _____ times the length of largest ship
0.1
122
formed by frictional drag
energy from wind
gravity waves
123
change in dissection of travel of wave
wave refraction
124
greatest height after the time of full and new moon
spring tides
125
sun, moon and earth fall in line
highest tide
spring tides
126
difference of high water and low water
tidal range
127
greatest height after the moon is quadrature
earth with sun and moon form right triangle
neap tides
128
largest 1/3 of all waves
significant waves
129
max wave height and wave period of max wave height in wave train
highest wave
130
depth is less than the half of its length
d < L/2
shallow water wave
131
current is negligible changing directions
less than 1/10 of knot
slack water
132
busiest ports in the world
1 shanghai, china
2 singapore, singapore
3 shenzen, china
133
demand increase, low price
law of demand
134
price increase, supply increase
law of supply
135
demand high
supply down
price increase
law of supply and demand
136
input increased continuously marginal output decrease
law of diminishing returns
137
single supplier/seller
monopoly
138
small no of sellers
oligopoly
139
large no of sellers
perfect competition
140
single buyer
monopsony
141
small no of buyers
oligopsony
142
large no of buyers
monopsonistic competition
143
thin coating of asphalt
seal coat
144
below the layer asphalt
between asphalt and binder
tack coat
145
binds asphalt and base
binder
146
crushed stone, etc
base
147
intermediate support of pavement
subbase
148
first layer in pavement, yung pinakalast
subgrade
149
acceptable height in cut
3m
150
acceptable height in fill
2m
151
how many days you will inform the person involved before project/cutting/filling
10 days
152
slope of cut and fill
1:2, 50%
153
ground surface, slope?
1:5, 20%
154
in benching, what is the length of first step from toe
3m
155
ano ang pinakamalaking size ng bato sa fill
200mm
156
what is the thickness of soil to compact before laying another soil to compact again
20cm
157
minimum percentage in compaction
90% compacted
158
a. bearing capacity of base=300mm by height=300mm
b. if another 300mm ang nadagdag sa either height or base, ilang percent ang idadagdag sa bearing capacity?
a. 100 kpa
b. 20%
Bcap = 100(1+0.2(n))
n= kung ilan ang 300mm na nadagdag
159
average undrained shear strength of clay in kpa
soft 12-24
medium 24-48
stiff 48-96
very stiff 96-192
hard 192-383
160
average undrained bearing strength of clay in kpa
soft 0-25
medium 25-50
stiff 50-100
very stiff 100-150
hard 150-200
161
unconfined compression strength of cohesive soil deposit in kpa
very soft 0-24
soft 24-48
medium 48-96
stiff 96-192
