Table 9 Typical equation for calculating the shear capacity of the BS.

From: Investigation of the shear performance of multi-key block bonding surfaces without connecting reinforcement for precast elements

Code

Equation

Note

MC 2010

The values for c and µs are provided in Table 6.

JGJ 1-2014

-

BS EN 1992-1-1

c = 0.4, µs = 0.7

CSA A23.3-04

c = 0.5, µs = 1.0

NZS3101-2006

µs = 1.0

ACI 318 − 11

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µs = 1.0

Proposed

The values for c and µs are provided in Table 7.

  1. Vcal = calculated values of Vu of joints (kN), c = cohesion factor, µs = the coefficient of static friction between the interfaces, fct = axial tensile strength of concrete (MPa), Ac = total area of the shear plane (mm2), fy = yield strength of the connecting reinforcement, As = cross-sectional area of the connecting reinforcement.
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