Page 24 - Design of Reinforced Masonry Structures

NOTATION xxiii

F v = allowable shear stress in masonry, psi (MPa)
f a = calculated compressive stress in masonry due to axial load only, psi (MPa)
f b = calculated compressive stress in masonry due to flexure only, psi (MPa)
f′ AAC = specified compressive strength of AAC, the minimum compressive strength for
a class of AAC as specified in ASTM C1386, psi (MPa)
f′ g = specified compressive strength of grout, psi (MPa)
f′ m = specified compressive strength of masonry, psi (MPa)
f′ mi = specified compressive strength of masonry at the time of prestress transfer, psi
(MPa)
f ps = stress in prestressing tendon at nominal strength, psi (MPa)
f pu = specified tensile strength of prestressing tendon, psi (MPa)
f py = specified yield strength of prestressing tendon, psi (MPa)
f r = modulus of rupture, psi (MPa)
f rAAC = modulus of rupture of AAC, psi (MPa)
f s = calculated tensile or compressive stress in reinforcement, psi (MPa)
f se = effective stress in prestressing tendon after all prestress losses have occurred, psi
(MPa)
f tAAC = splitting tensile strength of AAC as determined in accordance with ASTM C1006
f v = calculated shear stress in masonry, psi (MPa)
f y = specified yield strength of steel for reinforcement and anchors, psi (MPa)
H = lateral pressure of soil or related forces and moments
h = effective height of column, wall, or pilaster, in. (mm)
h = height of entire wall or segment of wall considered, in. (mm)
w
4
4
I = moment of inertia of cracked cross-sectional area of member, in. (mm )
cr
4
4
I = effective moment of inertia of member, in. (mm )
eff
I = moment of inertia of gross (or uncracked) cross-sectional area of member, in. 4
g
4
(mm )
j = ratio of distance between centroid of flexural compressive forces and centroid of
tensile forces to depth, d
K = dimension used to calculate reinforcement development length, in. (mm)
K = dimension used to calculate reinforcement development length for AAC masonry,
AAC
in. (mm)
K = coefficient of creep of masonry, per psi (MPa)
c
k = coefficient of irreversible moisture expansion of clay masonry
e
k = coefficient of thermal expansion of masonry, per degree Fahrenheit (degree
t
Celcius)
L = live load or related forces and moments
l = clear span between supports, in. (mm)
l b = effective embedment length of plate, headed or bent anchor bolts, in. (mm)
l be = anchor bolt edge distance, measured in the direction of load, from edge of
masonry center of cross section of anchor bolt, in. (mm)
l d = development length or lap length of straight reinforcement, in. (mm)