5.4.3.4 Calculation
If the fracture initiates in the tension surface within the
middle third of the span length, we can calculate the modulus of rupture as
follows:
R=Pl/bd2
where
R= modulus of
rupture, psi
P= maximum
applied load indicated by the testing machine, lbf
l = span
length, inch
b= average
width of specimen, inch
d= average
depth of specimen, inch
5.4.4 Diagrams for shear strength
Fig No. 5.3: Shear force and Bending moment diagram. |
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