Z-Section Torsional Properties [ver 1.1 1098]

Torsional Properties^1,2
Z-Sections

Section	J	C_w	Section	J	C_w	Section	J	C_w
	in.⁴	in.⁶		in.⁴	in.⁶		in.⁴	in.⁶

12 X 3.5 Z 12 G	0.00769	133.253	9 X 2.5 Z 12 G	0.00576	33.192	6 X 2.5 Z 12 G	0.00461	13.688
12 X 3.5 Z 13 G	0.00408	107.211	9 X 2.5 Z 13 G	0.00306	26.670	6 X 2.5 Z 13 G	0.00244	11.001
12 X 3.5 Z 14 G	0.00228	87.883	9 X 2.5 Z 14 G	0.00171	21.839	6 X 2.5 Z 14 G	0.00136	9.011
			9 X 2.5 Z 15 G	0.00137	20.240	6 X 2.5 Z 15 G	0.00109	8.352
12 X 3.0 Z 12 G	0.00731	93.696	9 X 2.5 Z 16 G	0.00102	18.329	6 X 2.5 Z 16 G	0.00082	7.564
12 X 3.0 Z 13 G	0.00388	75.327
12 X 3.0 Z 14 G	0.00217	61.710	8 X 3.5 Z 12 G	0.00615	54.138	4 X 2.5 Z 14 G	0.00114	3.774
			8 X 3.5 Z 13 G	0.00326	43.571	4 X 2.5 Z 15 G	0.00091	3.498
12 X 2.5 Z 12 G	0.00692	62.207	8 X 3.5 Z 14 G	0.00182	35.725	4 X 2.5 Z 16 G	0.00068	3.168
12 X 2.5 Z 13 G	0.00367	49.968	8 X 3.5 Z 15 G	0.00146	33.125
12 X 2.5 Z 14 G	0.00205	40.907	8 X 3.5 Z 16 G	0.00109	30.014	3.5 X 1.5 Z 14 G	0.00087	0.948
						3.5 X 1.5 Z 15 G	0.00070	0.878
10 X 3.5 Z 12 G	0.00692	88.907	8 X 3.0 Z 12 G	0.00576	38.326	3.5 X 1.5 Z 16 G	0.00052	0.795
10 X 3.5 Z 13 G	0.00367	71.543	8 X 3.0 Z 13 G	0.00306	30.823
10 X 3.5 Z 14 G	0.00205	58.653	8 X 3.0 Z 14 G	0.00171	25.258
10 X 3.5 Z 15 G	0.00164	54.381	8 X 3.0 Z 15 G	0.00137	23.415
10 X 3.5 Z 16 G	0.00123	49.272	8 X 3.0 Z 16 G	0.00102	21.211

10 X 3.0 Z 12 G	0.00654	62.714	8 X 2.5 Z 12 G	0.00538	25.651
10 X 3.0 Z 13 G	0.00347	50.427	8 X 2.5 Z 13 G	0.00285	20.613
10 X 3.0 Z 14 G	0.00194	41.317	8 X 2.5 Z 14 G	0.00159	16.880
10 X 3.0 Z 15 G	0.00155	38.300	8 X 2.5 Z 15 G	0.00128	15.645
10 X 3.0 Z 16 G	0.00116	34.693	8 X 2.5 Z 16 G	0.00095	14.169

10 X 2.5 Z 12 G	0.00615	41.792	7 X 2.5 Z 12 G	0.00499	19.156
10 X 2.5 Z 13 G	0.00326	33.576	7 X 2.5 Z 13 G	0.00265	15.394
10 X 2.5 Z 14 G	0.00182	27.492	7 X 2.5 Z 14 G	0.00148	12.608
10 X 2.5 Z 15 G	0.00146	25.479	7 X 2.5 Z 15 G	0.00118	11.686
10 X 2.5 Z 16 G	0.00109	23.073	7 X 2.5 Z 16 G	0.00089	10.583

III-B-1

15 October 1998