The design load-carrying capacity per bolt per shear plane, Fv.Rd

The design load on bolt (a) per shear plane, Fd


KM. connection

The design load is less than the capacity of the bolt; therefore OK

Check the capacity of the row of bolts subjected to the maximum forces parallel to the grain of the timber beam, i.e. the bolts in the row positioned 88 mm above the centroid. (NB: No need to check rows perpendicular to timber grain as there is no strength reduction for rows in that direction.)

The characteristic load-carrying capacity per shear plane per bolt based on failure mode (m), Fv. Rk.b parallel to the grain:

(from consideration of the strength equations this will still be the failure condition)

F 1v

Number of bolts per shear plane in the nb = 3 row, nb

Effective number of bolts per shear nef = min plane in the row

(Mathcad adjusted to make it dimensionally correct.)

Design force capacity per bolt per shear plane parallel to the grain taking bolt spacing effect into account, F1h KM. connection

Design force component per bolt per FH i shear plane parallel to the grain in each of the bolts in the row, FH,a

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