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Prestressed Concrete Design > Notation > Flashcards

Notation Flashcards

(96 cards)

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1
Q

shear span, distance between concentrated load and face of supports

A

a

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2
Q

Area that part of a cross section | center of gravity

A

A

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3
Q

Area of concrete section resisting shear transfer

A

Ac

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4
Q

Cross sectional area of member measured to the outside edges

A

Ach

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5
Q

Cross sectional area at one end of a strut

A

Acs

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6
Q

Area ot that part cross section | centroid

A

Act

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7
Q

Gross area of concrete section

A

Ag

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8
Q

Total area of longitudinal reinforcement to resist torsion

A

Al

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9
Q

Minimum area of longitudinal reinforcement to resist torsion

A

Almin

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10
Q

Total area occupied by the duct, sheating

A

Apd

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11
Q

Area of prestressed reinforcement in tension zone

A

Aps

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12
Q

Total area of prestressing reinforcement

A

Apt

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13
Q

Area of non-prestressed longitudinal tension reinforcement

A

As

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14
Q

Area of compression reinforcement

A

A’s

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15
Q

Total cross sectional area of transverse reinforcement including crossties

A

Ash

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16
Q

Minimum area of flexural reinforcement

A

Asmin

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17
Q

Total area of non-prestressed longitudinal reinforcement bars or steel bars

A

Ast

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18
Q

Area of steel shape, pipe, tubing

A

Asx

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19
Q

Total area of longitudinal reinforcement to resist torsion

A

At

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20
Q

Total cross sectional area of all transverse reinforcement within spacing s

A

Atr

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21
Q

Area of non-prestressed reinforcement within spacing s

A

Av

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22
Q

Width of compression face

A

b

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23
Q

Cross sectional dimension of member core

A

bc

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24
Q

Effective flange width

A

bf

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25
Web width or diameter of circular section
bw
26
Distance from extreme compression fiber to neutral axis
c
27
Distance from extreme compression fiber to centroid of longitudinal tension reinforcement
d
28
Distance from extreme compression fiber to centroid of longitudinal compression reinforcement
d'
29
Nominal diameter of wire,bar or prestressing strand
db
30
Distance from extreme compression fiber to centroid of prestressed reinforcement
dp
31
Diameter of pile
dpile
32
Distance from extreme tension fiber to centroid of tension reinforcement
ds
33
Dead loads or related internal moments and forces Effect of service dead load
D
34
Effect of horizontal and vertical earthquake
E
35
Modulus of elasticity of concrete -beam -slab -prestressing
Ec Ecb Ecs Ep
36
Modulus of elasticity of reinforcement and structural steel
Es
37
Specified compressive strength of comcrete
f'c
38
Compressive strength of concrete at time of initial prestress
fci'
39
Average splitting tensile strength
fct
40
Compressive stress in concrete after allowance for all prestress losses
fpc
41
Compressive stress due to effective prestress forces
fpe
42
Stress in prestressing steel at nominal flexural strength
fps
43
Specified tensile strength of prestressing reinforcement
fpu
44
Specified yield strength of prestressing reinforcement
fpy
45
Modulus of rupture of concrete
fr
46
Tensile stess in reinforcement at service loads excluding prestressing reinforcement
fs
47
Compressive stess in reinforcement at service loads excluding prestressing reinforcement
f's
48
Effective stress in prestressed reinforcement
fse
49
Extreme fiber stress in tension in the pre compressed tensile zone
ft
50
specified yield strength of non prestressed reinforcement
fy
51
Specified yield strength of transverse reinforcement
fyt
52
Overall thickness of member
h
53
Development length in tension of deformed bar
ld
54
Development length in compression of deformed bar
ldc
55
Development length in tension of deformed bar measured from outside
ldh
56
Length measured from joint face
lo
57
Transfer length of prestressed reinforcement
ltr
58
Length of prestressing tendon element form any point x
lx
59
Effect of service live load
L
60
Development length
Ld
61
Moment acting on anchor or anchor group
M
62
Maximum moment in member due to service loads
Ma
63
Cracking moment
Mcr
64
Nominal flexural moment of section
Mn
65
Nomial flexural strength of beam
Mnb
66
Nomial flexural strength of column
Mnc
67
Modular ratio of elasticity
n
68
n
Es/Ec Not less than 6
69
Perimeter of centerline of outermost closed transverse torsional reinforcement
Ph
70
Nominal axial load strength at zero eccentricity
Po
71
Prestressing force at jacking end
Ppj
72
Factored prestressing force at anchorage end
Ppu
73
Prestressing force evaluated at distance from lpx jacking end
Ppx
74
Prestressing tendon force at jacking end
Ps
75
Unfactored axial load at the design, mid height section
Ps
76
Factored post tensioned tendon force at anchorage device
Psu
77
Factored axial load at given eccentricity Factored axial force to be taken as positive for compression
Pu
78
Prestressing tendon force at any point x
Px
79
Spacing of shear reinforcement Center to center spacing
s
80
Wall thickness of hollow section
t
81
Thickness of flange
tf
82
Cracking torsional moment
Tcr
83
Strength of a member or cross section required to resist factored loads
U
84
Design shear stress
v
85
Design shear force
V
86
Factored shear force
Vu
87
Shorter overall dimension of rectangular cross section
x
88
Longer overall dimension of rectangular cross section
y
89
Distance from centroidal axis of gross section
yt
90
Factor for type of prestressing
yp or gamma p 0.55 for not less than 0.80 0.40 for not less than 0.85 0.28 for not less than 0.90
91
Correction factor Modification factor
Lambda
92
Coefficient of friction
Torrent
93
Ratio of non prestressed tension reinforcement
p rho
94
Ratio of prestressed reinforcement
pp rho p
95
Strength reduction factor
Phi
96
Characteristic bond stress of adhesive anchor in cracked concrete
tao cr

Prestressed Concrete Design (4 decks)

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