Notation Flashcards
shear span, distance between concentrated load and face of supports
a
Area that part of a cross section | center of gravity
A
Area of concrete section resisting shear transfer
Ac
Cross sectional area of member measured to the outside edges
Ach
Cross sectional area at one end of a strut
Acs
Area ot that part cross section | centroid
Act
Gross area of concrete section
Ag
Total area of longitudinal reinforcement to resist torsion
Al
Minimum area of longitudinal reinforcement to resist torsion
Almin
Total area occupied by the duct, sheating
Apd
Area of prestressed reinforcement in tension zone
Aps
Total area of prestressing reinforcement
Apt
Area of non-prestressed longitudinal tension reinforcement
As
Area of compression reinforcement
A’s
Total cross sectional area of transverse reinforcement including crossties
Ash
Minimum area of flexural reinforcement
Asmin
Total area of non-prestressed longitudinal reinforcement bars or steel bars
Ast
Area of steel shape, pipe, tubing
Asx
Total area of longitudinal reinforcement to resist torsion
At
Total cross sectional area of all transverse reinforcement within spacing s
Atr
Area of non-prestressed reinforcement within spacing s
Av
Width of compression face
b
Cross sectional dimension of member core
bc
Effective flange width
bf
Web width or diameter of circular section
bw
Distance from extreme compression fiber to neutral axis
c
Distance from extreme compression fiber to centroid of longitudinal tension reinforcement
d
Distance from extreme compression fiber to centroid of longitudinal compression reinforcement
d’
Nominal diameter of wire,bar or prestressing strand
db
Distance from extreme compression fiber to centroid of prestressed reinforcement
dp
Diameter of pile
dpile
Distance from extreme tension fiber to centroid of tension reinforcement
ds
Dead loads or related internal moments and forces
Effect of service dead load
D
Effect of horizontal and vertical earthquake
E
Modulus of elasticity of concrete
-beam
-slab
-prestressing
Ec
Ecb
Ecs
Ep
Modulus of elasticity of reinforcement and structural steel
Es
Specified compressive strength of comcrete
f’c
Compressive strength of concrete at time of initial prestress
fci’
Average splitting tensile strength
fct
Compressive stress in concrete after allowance for all prestress losses
fpc
Compressive stress due to effective prestress forces
fpe
Stress in prestressing steel at nominal flexural strength
fps
Specified tensile strength of prestressing reinforcement
fpu
Specified yield strength of prestressing reinforcement
fpy
Modulus of rupture of concrete
fr
Tensile stess in reinforcement at service loads excluding prestressing reinforcement
fs
Compressive stess in reinforcement at service loads excluding prestressing reinforcement
f’s
Effective stress in prestressed reinforcement
fse
Extreme fiber stress in tension in the pre compressed tensile zone
ft
specified yield strength of non prestressed reinforcement
fy
Specified yield strength of transverse reinforcement
fyt
Overall thickness of member
h
Development length in tension of deformed bar
ld
Development length in compression of deformed bar
ldc
Development length in tension of deformed bar measured from outside
ldh
Length measured from joint face
lo
Transfer length of prestressed reinforcement
ltr
Length of prestressing tendon element form any point x
lx
Effect of service live load
L
Development length
Ld
Moment acting on anchor or anchor group
M
Maximum moment in member due to service loads
Ma
Cracking moment
Mcr
Nominal flexural moment of section
Mn
Nomial flexural strength of beam
Mnb
Nomial flexural strength of column
Mnc
Modular ratio of elasticity
n
n
Es/Ec
Not less than 6
Perimeter of centerline of outermost closed transverse torsional reinforcement
Ph
Nominal axial load strength at zero eccentricity
Po
Prestressing force at jacking end
Ppj
Factored prestressing force at anchorage end
Ppu
Prestressing force evaluated at distance from lpx jacking end
Ppx
Prestressing tendon force at jacking end
Ps
Unfactored axial load at the design, mid height section
Ps
Factored post tensioned tendon force at anchorage device
Psu
Factored axial load at given eccentricity
Factored axial force to be taken as positive for compression
Pu
Prestressing tendon force at any point x
Px
Spacing of shear reinforcement
Center to center spacing
s
Wall thickness of hollow section
t
Thickness of flange
tf
Cracking torsional moment
Tcr
Strength of a member or cross section required to resist factored loads
U
Design shear stress
v
Design shear force
V
Factored shear force
Vu
Shorter overall dimension of rectangular cross section
x
Longer overall dimension of rectangular cross section
y
Distance from centroidal axis of gross section
yt
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
Correction factor
Modification factor
Lambda
Coefficient of friction
Torrent
Ratio of non prestressed tension reinforcement
p
rho
Ratio of prestressed reinforcement
pp
rho p
Strength reduction factor
Phi
Characteristic bond stress of adhesive anchor in cracked concrete
tao cr
