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where:

F_d

-

the design compression force acting on the cross-section

ϕ

-

the capacity reduction factor - 0.75

k_s

-

a reduction factor is taken as 1.18 - 0.03*S_r but not greater than 1.0

f'_uc

-

the characteristic unconfined compressive strength of masonry

f'_m

-

the characteristic compressive strength of masonry

A_b

-

the bedded area of the masonry cross-section

f_sy

-

the design yield strength of reinforcement

A_s

-

the total cross-sectional area of main reinforcement

where:

M_d

-

the design bending moment acting on the cross-section of the member

ϕ

-

the capacity reduction factor - 0.75

f_sy

-

the design yield strength of reinforcement

A_sd

-

the portion of the cross-sectional area of the main tensile reinforcement used for design purposes in a reinforced masonry member

the lesser of and A_st

f'_m

-

the characteristic compressive strength of masonry

d

-

the effective depth of the reinforced masonry member

f_uc

-

the characteristic unconfined compressive strength of masonry

where:

V_d

-

the design shear force acting on the cross-section of the masonry wall

ϕ

-

the capacity reduction factor - 0.75

f'_vm

-

the characteristic shear strength of reinforced masonry - 0.35 Mpa

d

-

the effective depth of the reinforced masonry wall

f_vs

-

the design shear strength of the main reinforcement - 17.5 Mpa

f_sy

-

the design yield strength of reinforcement

A_st

-

the cross-sectional area of fully anchored longitudinal reinforcement in the tension zone of the cross-section