Table 1.

Mean values, standard deviation (SD) of moments (Nmm) by type of bracket and wire

Bracket slot height (in.)	Cross-section	Wire (in.)	Moment mean (SD)
0.018	Square	0.018 × 0.018	18.19 (0.30)
	Rectangular	0.018 × 0.022	22.93 (0.68)
	Rectangular	0.018 × 0.025	30.60 (0.37)
0.022	Square	0.019 × 0.019	10.78 (0.86)
	Rectangular	0.019 × 0.025	15.66 (0.52)
	Rectangular	0.019 × 0.026	16.51 (0.48)

SD standard deviation