HGE Flashcards

1
Q

SPECIFIC GRAVITY SG

A

p / pwater
gamma / gammawater

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2
Q

GAGE PRESSURE Pgage

A

gamma * h

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3
Q

ABSOLUTE PRESSURE Pabs

A

Pgage + Patm

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4
Q

Patm

A

101.325kPa
1atm
10.1 tons/m^2
760 mm Hg

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5
Q

MASS DENSITY p
WEIGHT DENSITY gamma

A

m / vol
W / vol

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6
Q

SG Oil
SG Mercury
SG Glycerin
SG Saltwater

A

.8
13.6
2.4
1.03

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7
Q

HYDROSTATIC FORCE HORIZ Fhx
HYDROSTATIC FORCE VERTI Fhy

A

gamma liquid * hbar * A
gamma liquid * volumeabove

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8
Q

ECCENTRICITY e

A

Icg / (Aybar)
Icg
sintheta / (Ahbar)
(gamma
Icg*sintheta) / Fh

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9
Q

Aspandrel
Asector

A

1/3 * bh
1/2 * r^2*theta

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10
Q

BUOYANT FORCE BF

A

gamma liquid * Voldisplaced
BF = W for floating
W > BF for sinking
acts at geometric centroid

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11
Q

MOVING LIQUIDS tan theta

A

a/g
yrise = ydepression if no spill

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12
Q

ROTATING VESSELS y
y/2 > hair initial
y/2 < hair initial

A

w^2*r^2 / 2g
spill
no spill

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13
Q

Vol paraboloid

A

r^2ypi / 2

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14
Q

SQUARE PROPERTY OF PARABOLA SPP

A

x1^2 / y1 = x2^2 / y2

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15
Q

DISCHARGE Q
MASS DISCHARGE Qmass
WEIGHT DISCHARGE Qweight

A

AVelocity
pAVelocity
pgAVelocity

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16
Q

ENERGY EQUATION

A

E1-hf=E2
v1^2/2g + P1/gamma + z1 - hf = v2^2/2g + P2/gamma + z2

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17
Q

At stagnation point in pitot ___ = ___
No ___ in venturis, pitot, piezo

A

V=0
elevation head

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18
Q

Head is

A

height of liquid above orifice

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19
Q

1m^3

A

1000 Liters

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20
Q

MANNINGS VELOCITY V

A

1/n * R^2/3 * S^.5 for metric
1.49/n for imperial

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21
Q

MANNING hf

A

10.29n^2LQ^2 / D^16/3

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22
Q

HAZEN WILLIAMS hf

A

10.67LQ^1.85 / (C^1.85 * D^4.87)

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23
Q

DARCY WEISBACH hf

A

0.0826fLQ^2 / D^5 for metric only
or fLV^2 / 2gD for imperial and metric

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24
Q

SLOPE OF EGL

A

hloss / L

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25
Q

HYDRAULIC RADIUS R

A

Aflow/Pwetted

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26
Q

POWER P

A

Q gamma hloss

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27
Q

Pextracted
Padded

A

Pinput
Poutput

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28
Q

Series Pipes have equal __ and sum of __

A

discharge, headlosses

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29
Q

Parallel Pipes have equal __, Qa = ___ and have same ___

A

headlosses, Qb+Qc, input and output

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30
Q

MES RECTANGLE
MES TRIANGLE
MES TRAPEZOID
MES CIRCLE

A

b=2d
b=2d, 90 degree angle inside
b=b=b, 120 inside angle 1 side
0.94d

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31
Q

FROUDE NUMBER Fn
<1
>1
=1

A

SQRT (Q^2T/ (A^3g))
sub
super
critical

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32
Q

SPECIFIC ENERGY Espec, has no ______

A

V^2/2g + d, pressure head

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33
Q

CRITICAL DEPTH dcrit

A

2/3 Emin

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34
Q

ORIFICE k
ORIFICE t

A

2As / (CdAoSQRT(2g))
(SQRT(gammah1) - SQRT(gammah2)) * k/SQRT(gammadrain)

35
Q

COEFFICIENT OF DISCHARGE Cd
COEFFICIENT OF CONTRACTION Cc
COEFFICIENT OF VELOCITY Cv

A

CcCv
Avena/Aorifice
Vact/Vtheo

36
Q

HYDRAULIC JUMP
Fp
Fm
Energy Equation = __ has ____

A

Fp1 + Fm1 = Fp2 + Fm2
Pcg*Aflow
pQV
velocity head1 - headloss = velocity head2, no pressure head

37
Q

THREE RESERVOIR
When Q2 = 0, Q1<Q3
When Q2 = 0, Q1>Q3

A

Q1+Q2=Q3, Q2 towards junction
Q1=Q2+Q3, Q2 towards reservoir

38
Q

THREE RESERVOIR
Highest elevation/energy reservoir always ___
No __ @ ___
Flow in pipes are represented by ____

A

gives water
velocity, junction and pressure+velocity head in reservoirs
headlosses

39
Q

VOLUME OF VOIDS Vv
VOLUME V

A

Vw +Va
Vs + Vv

40
Q

WEIGHT W
Wair

A

Ww + Ws
Wa = 0

41
Q

VOID RATIO e

A

Vv/Vs
n/(1-n)

42
Q

POROSITY n

A

Vv/V
e/(1+e)

43
Q

WATER CONTENT w

A

Ww/Ws * 100%

44
Q

DEGREE OF SATURATION S

A

Vw/Vv

45
Q

GAMMA SOIL
SPECIFIC GRAVITY SOIL Gs

A

gamma water * (Gs+Se)/(1+e)
gamma solid/gamma water

46
Q

GAMMA SOLIDS

A

Ws/Vs

47
Q

RELATIONSHIP OF Se

A

Se=wGs

48
Q

1+w

A

gamma/gamma dry

49
Q

GAMMA EFFECTIVE

A

gamma asked - gamma water
gamma asked

50
Q

RELATIVE DENSITY Dr

A

e max - e / (emax - emin)

51
Q

EMBANKMENTS

A

V1/(1+e1) = V2/(1+e2)

52
Q

Cu

A

D60/D10

53
Q

LIQUID LIMIT LL
PLASTIC LIMIT PL

A

w@20mm pen lin & w@25 blows log
w @ 4.2mm dia threads

54
Q

PLASTIC INDEX PI
LIQUIDITY INDEX LI

A

LL-PL
(w-PL)/PI

55
Q

PARTIAL GI
FULL GI NUMBER

A

0.01(F200-15)(PI-10)

<F200-35>*(0.2+0.005(LL-40)) + 0.01(F200-15)(PI-10)
</F200-35>

56
Q

CONSTANT HEAD TEST DISCHARGE Q
i=?

A

Aki
i = hloss / L

57
Q

INTERSTITIAL VELOCITY or SEEPAGE VELOCITY Vs

A

ki/n

58
Q

COARSE GRAINED COEFFICIENT OF PERMEABILITY

A

vol*L/(hAt)

59
Q

FINE GRAINED COEFFICIENT OF PERMEABILITY

A

aL/at ln(h1/h2)

60
Q

EFFECTIVE STRESS Pe

A

Pt - Pw
or
summation gammaeff*h

61
Q

TOTAL STRESS Pt

A

summation gamma*h

62
Q

PORE WATER PRESSURE Pw

A

summation gamma water*hwater

63
Q

CAPILLARY ACTION HEIGHT hc

A

C/(eD10)

64
Q

BASIC SETTLEMENT H
Pc _ Po

A

H*change e / (1+e)
<

65
Q

PRESSURE CHANGE triangle P

A

P/Apressure@midheight

66
Q

TOTAL EFFECTIVE OR FINAL STRESS Pf

A

Po + pressure change

67
Q

NORMAL SETTLEMENT H
Pc _ Po

A

H *Cc log (Pf/Po) / (1+e)
<

68
Q

Consolidation Index Cc
Undisturbed
Disturbed

A

change e / log Pf - log Po
0.009(LL-10)
0.007(LL-7)

69
Q

OVERCONSOLIDATED CASE 1 H
Pc _ Po
Pf _ Pc
Cs is ___ and default value is ?
Cs range

A

H *Cs log (Pf/Po) / (1+e)
>
<
Swell Index, 0.2Cc
0.1Cc - 0.2Cc

70
Q

OVERCONSOLIDATED CASE 2 H
Pc _ Po
Pf _ Pc

A

H*(Cs log Pc/Po + Cc log Pf/Pc) / (1+e)
>
>

71
Q

OVERCONSOLIDATION RATIO OCR

A

Pc/Po

72
Q

PILE EFFECTIVE HEIGHT L

A

2/3 L from base of footing

73
Q

EFFECTIVE OVERBURDEN PRESSURE q

A

summation gammae*h

74
Q

WALL/STRIP ULTIMATE BEARING CAP

A

cNc + qNq + 0.5gammaeffBNy

75
Q

SQUARE ULTIMATE BEARING CAP

A

1.3cNc + qNq + 0.4gammaeffBny

76
Q

CIRCULAR ULTIMATE BEARING CAP

A

1.3cNc + qNq + 0.3gammaeffDny

77
Q

NET ULTIMATE BEARING CAP qun

A

qug - q

78
Q

NET ALLOWABLE BEARING CAP qan

A

Pan/Aftg or qun/FS

79
Q

GROSS ALLOWABLE BEARING CAP qag

A

P/Aftg or qug/FS

80
Q

SKIN FRICTION CAPACITY Qsf

A

summation alpha c Alateral

81
Q

END BEARING CAPACITY Qb
c at ?
default Nc = ?

A

cNcAbearing
end bearing
9

82
Q

ULTIMATE PILE CAP Qu

A

Qsf + Qb

83
Q

DESIGN PILE CAP Qudesign

A

(Qusf/ FSsf) + (Qub/FSb)