Section
5 Geometric properties of rolled sections
5.1 General
5.1.1 For convenience,
geometric properties of rolled sections may be derived from Table 3.5.1 Inverted angle bars, Table 3.5.2 Flat bars and Table 3.5.3 Holland profiles. Alternatively, the effective geometric properties of rolled
sections may be calculated directly from dimensions of the section
and associated area of attached plating.
Table 3.5.1 Inverted angle bars
|
Plating thickness 4 – 8 mm
|
Plating thickness 9 – 12 mm
|
A, in
cm2
of section only
|
I, in cm4
|
Z, in cm3
|
A, in cm2
|
I, in cm4
|
Z, in cm3
|
45 × 45 ×
4
|
3,49
|
45
|
10
|
|
|
|
45 × 45 ×
6
|
5,09
|
59
|
14
|
|
|
|
50 × 50 ×
5
|
4,80
|
67
|
15
|
|
|
|
60 × 40 ×
5
|
4,79
|
92
|
16
|
|
|
|
50 × 50 ×
6
|
5,69
|
75
|
17
|
|
|
|
|
|
|
|
|
|
|
50 × 50 ×
8
|
7,41
|
90
|
21
|
7,41
|
118
|
24
|
60 × 40 ×
7
|
6,55
|
115
|
22
|
6,55
|
142
|
24
|
60 × 60 ×
6
|
6,91
|
128
|
25
|
|
|
|
65 × 50 ×
7
|
7,6
|
149
|
27
|
7,6
|
189
|
30
|
80 × 40 ×
6
|
6,89
|
203
|
29
|
|
|
|
|
|
|
|
|
|
|
60 × 65 ×
6
|
7,53
|
161
|
30
|
|
|
|
60 × 60 ×
8
|
9,03
|
152
|
31
|
9,03
|
197
|
35
|
65 × 50 ×
9
|
9,58
|
173
|
33
|
9,58
|
223
|
36
|
75 × 50 ×
7
|
8,3
|
207
|
34
|
8,3
|
259
|
37
|
80 × 40 ×
8
|
9,01
|
245
|
36
|
9,01
|
298
|
39
|
|
|
|
|
|
|
|
80 × 60 ×
6
|
8,11
|
250
|
36
|
|
|
|
65 × 65 ×
8
|
9,85
|
191
|
37
|
9,85
|
247
|
41
|
70 × 70 ×
7
|
9,4
|
218
|
39
|
9,4
|
279
|
43
|
75 × 50 ×
9
|
10,5
|
240
|
40
|
10,5
|
308
|
44
|
100 × 50
× 6
|
8,73
|
364
|
45
|
|
|
|
|
|
|
|
|
|
|
70 × 70 ×
9
|
11,9
|
251
|
48
|
11,9
|
330
|
52
|
80 × 60 ×
8
|
10,6
|
309
|
48
|
10,6
|
380
|
51
|
100 × 50
× 8
|
11,5
|
435
|
56
|
11,5
|
550
|
61
|
80 × 80 ×
8
|
12,3
|
368
|
58
|
12,3
|
445
|
63
|
100 × 65
× 7
|
11,2
|
462
|
60
|
11,2
|
584
|
65
|
|
|
|
|
|
|
|
100 × 75 ×
7
|
11,9
|
499
|
66
|
11,9
|
635
|
71
|
80 × 80 ×
10
|
15,1
|
417
|
69
|
15,1
|
513
|
74
|
100 × 65
× 9
|
14,2
|
534
|
73
|
14,2
|
693
|
79
|
100 × 75
× 9
|
15,1
|
662
|
84
|
15,1
|
754
|
88
|
90 × 90 ×
10
|
17,1
|
620
|
90
|
17,1
|
741
|
96
|
|
|
|
|
|
|
|
100 × 75 ×
11
|
18,2
|
696
|
95
|
18,2
|
855
|
102
|
130 × 65
× 8
|
15,1
|
906
|
96
|
15,1
|
1160
|
103
|
90 × 90 ×
12
|
20,3
|
683
|
103
|
20,3
|
828
|
110
|
130 × 75
× 8
|
15,9
|
1045
|
107
|
15,9
|
1250
|
113
|
100 × 100
× 10
|
19,2
|
777
|
111
|
19,2
|
964
|
118
|
|
|
|
|
|
|
|
130 × 65 × 10
|
18,6
|
1110
|
116
|
18,6
|
1343
|
124
|
100 × 100
× 12
|
22,7
|
850
|
126
|
22,7
|
1070
|
135
|
130 × 75 × 10
|
19,6
|
1266
|
129
|
19,6
|
1446
|
135
|
150 × 75 × 9
|
19,5
|
1545
|
142
|
19,5
|
1865
|
151
|
130 × 75 × 12
|
23,3
|
1405
|
148
|
23,3
|
1620
|
156
|
|
|
|
|
|
|
|
120 × 120 × 10
|
23,2
|
1371
|
164
|
23,2
|
1656
|
173
|
150 × 75 ×
11
|
23,6
|
1848
|
169
|
23,6
|
2194
|
179
|
150 × 90 ×
10
|
23,2
|
1924
|
178
|
23,2
|
2210
|
186
|
120 × 120
× 12
|
27,5
|
1505
|
187
|
27,5
|
1841
|
199
|
150 × 100
× 10
|
24,2
|
1895
|
188
|
24,2
|
2340
|
200
|
|
|
|
|
|
|
|
150 × 90
× 12
|
27,5
|
2126
|
204
|
27,5
|
2464
|
214
|
150 × 100
× 12
|
28,7
|
2085
|
215
|
28,7
|
2607
|
230
|
130 × 130
× 12
|
30
|
1732
|
216
|
30
|
2207
|
232
|
180 × 90
× 10
|
26,2
|
2902
|
228
|
26,2
|
3336
|
239
|
130 × 130
× 14
|
34,7
|
1860
|
241
|
34,7
|
2398
|
260
|
|
|
|
|
|
|
|
180 × 90
× 12
|
31,2
|
3218
|
263
|
31,2
|
3732
|
276
|
200 × 100
× 10
|
29,2
|
3866
|
282
|
29,2
|
4460
|
295
|
150 × 150
× 12
|
34,8
|
2540
|
290
|
34,8
|
3259
|
310
|
200 × 100
× 12
|
34,8
|
4278
|
325
|
34,8
|
4977
|
341
|
150 × 150
× 15
|
43
|
3056
|
348
|
43
|
3659
|
367
|
Table 3.5.2 Flat bars
|
Plating thickness 4 – 8 mm
|
Plating thickness 9 – 12 mm
|
A, in cm2
|
I, in cm4
|
Z, in cm3
|
A, in cm2
|
I, in cm4
|
Z, in cm3
|
50 ×
5
|
2,5
|
23
|
5
|
|
|
|
50 ×
7
|
3,5
|
31
|
6
|
3,5
|
39
|
7
|
60 ×
5
|
3
|
38
|
6
|
|
|
|
|
|
|
|
|
|
|
65 ×
5
|
3,25
|
47
|
7
|
|
|
|
50 ×
9
|
4,5
|
39
|
8
|
4,5
|
49
|
9
|
60 ×
7
|
4,2
|
51
|
9
|
4,2
|
62
|
10
|
|
|
|
|
|
|
|
65 x
7
|
4,55
|
64
|
10
|
4,55
|
76
|
11
|
60 x
9
|
5,4
|
64
|
11
|
5,4
|
77
|
13
|
75 x
6
|
4,5
|
83
|
12
|
|
|
|
|
|
|
|
|
|
|
65 x
9
|
5,85
|
79
|
13
|
5,85
|
95
|
15
|
75 x
8
|
6
|
106
|
16
|
6
|
125
|
17
|
75 x
10
|
7,5
|
135
|
19
|
7,5
|
152
|
21
|
|
|
|
|
|
|
|
90 x
7
|
6,3
|
164
|
19
|
6,3
|
182
|
21
|
90 x
9
|
8,1
|
203
|
25
|
8,1
|
227
|
26
|
100 x
8
|
8
|
245
|
27
|
8
|
272
|
28
|
|
|
|
|
|
|
|
90 x
11
|
9,9
|
250
|
30
|
9,9
|
269
|
32
|
110 x
8
|
8,8
|
319
|
32
|
8,8
|
353
|
34
|
100 x
10
|
10
|
308
|
34
|
10
|
330
|
35
|
|
|
|
|
|
|
|
110 x
10
|
12,1
|
383
|
39
|
12,1
|
428
|
42
|
100 x
12
|
12
|
358
|
40
|
12
|
385
|
41
|
110 x
12
|
13,2
|
443
|
46
|
13,2
|
498
|
49
|
|
|
|
|
|
|
|
130 x
9
|
11,7
|
555
|
49
|
11,7
|
617
|
51
|
130 x
11
|
14,3
|
680
|
60
|
14,3
|
729
|
62
|
130 x
13
|
16,9
|
806
|
71
|
16,9
|
835
|
72
|
|
|
|
|
|
|
|
150 x
10
|
15
|
930
|
72
|
15
|
996
|
74
|
150 x
12
|
18
|
1115
|
86
|
18
|
1154
|
88
|
150 x
14
|
21
|
1256
|
99
|
21
|
1302
|
101
|
Table 3.5.3 Holland profiles
|
Plating thickness 4 – 8 mm
|
Plating thickness 9 – 12 mm
|
A, in
cm2
of section only
|
I, in cm4
|
Z, in cm3
|
A, in cm2
|
I, in cm4
|
Z, in cm3
|
80 x
5
|
5,4
|
158
|
21
|
|
|
|
80 x
7
|
7
|
186
|
25
|
7
|
213
|
27
|
100 x
6
|
7,74
|
320
|
35
|
|
|
|
|
|
|
|
|
|
|
100 x
8
|
9,74
|
367
|
42
|
9,74
|
420
|
44
|
120 x
6
|
9,31
|
534
|
51
|
|
|
|
120 x
8
|
11,71
|
608
|
59
|
11,71
|
695
|
63
|
|
|
|
|
|
|
|
140 x
7
|
12,4
|
892
|
76
|
12,4
|
1016
|
80
|
140 x
9
|
15,2
|
999
|
87
|
15,2
|
1151
|
92
|
160 x
7
|
14,8
|
1357
|
104
|
14,8
|
1556
|
110
|
|
|
|
|
|
|
|
160 x
9
|
17,8
|
1491
|
117
|
17,8
|
1728
|
124
|
180 x
8
|
18,9
|
2064
|
148
|
18,9
|
2396
|
156
|
180 x
10
|
22,5
|
2246
|
165
|
22,5
|
2633
|
175
|
|
|
|
|
|
|
|
200 x 9
|
23,5
|
2968
|
200
|
23,5
|
3483
|
212
|
200 x 11
|
27,6
|
3196
|
220
|
27,6
|
3785
|
235
|
220 x 10
|
29
|
4169
|
268
|
29
|
4950
|
285
|
|
|
|
|
|
|
|
220 x 12
|
33,4
|
4387
|
287
|
33,4
|
5244
|
307
|
240 x
10
|
32,4
|
5371
|
325
|
32,4
|
6412
|
346
|
240 x
12
|
37,3
|
5724
|
354
|
37,3
|
6877
|
379
|
|
|
|
|
|
|
|
260 x
11
|
38,7
|
7097
|
415
|
38,7
|
8549
|
443
|
260 x
13
|
43,3
|
7421
|
439
|
43,3
|
8959
|
471
|
|