Table 3.

Details of classification of L/H ratio, H/W ratio, and type of steel tube.

N°	L/H Ratio	Number	H/W Ratio	Number	Steel Tube Type	Number
1	0–3	177	0.75–1.25	337	Cold formed	201
2	3–6	107	1.25–1.75	73	Welded box	193
3	6–9	14	1.75–2.25	12	Other	28
4	9–12	21	Total	422	Total	422
5	12–15	25
6	15–18	15
7	18–21	10
8	21–24	10
9	24–27	16
10	27–30	8
11	30–33	0
12	33–36	10
13	36–39	0
14	39–42	0
15	42–45	6
16	45–48	3
	Total	422