Methodology for calculating load capacity reduction and slip relationship of clustered group nail connectors

Advances in Bridge Engineering

Table 4 Influence of nail spacing on bearing capacity

Types of models	Nail diameterd = 22 mm
Types of models	Single nail	4D	5D	6D	7D	8D
Average bearing capacity of single nail (kN)	169.9	156.31	156.99	159.03	160.90	162.93
Reduction factor \(\eta\)	1	0.920	0.924	0.936	0.947	0.959