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ITI timber sizes and section properties

Calcs.com carries 166 ITI timber sections across 8 calculators. The section properties and characteristic values are the ones ITI publishes.

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Every ITI timber section

All 166 ITI sections in the Calcs.com library, with the section properties and characteristic values used to design them.

These are section properties and characteristic values, not allowable spans. A span depends on your loads, member spacing, and deflection limit, so it has to be calculated.

ITI Spec Joist® I-Joist

24 sections. Depths: 200, 240, 255, 300, 360, 400 mm. Breadths: 45, 53, 58, 69, 89, 90, 96 mm.

Published for the whole product line

Seasoned

ITI Prolam® Glulam

22 sections. Depths: 70, 90, 140, 190, 240, 265, 290, 330 mm. Breadths: 32, 35, 42, 65, 80 mm.

Published for the whole product line

f'b 40 MPaE 16,700 MPaf's 4.2 MPaf'c 33 MPa850 kg/m3SD3JD2Seasoned

ITI Spec Frame® LVL

20 sections. Depths: 65, 70, 90, 96, 100, 140, 170, 190, 240, 290, 300, 360, 400 mm. Breadths: 35, 45, 51, 63 mm.

Published for the whole product line

f't 25 MPaE 11,700 MPaf's 6.5 MPaf'c 45 MPa550 kg/m3SD6JD4Seasoned

ITI Design Pine® Sawn

12 sections. Depths: 66, 90, 138, 185, 230, 280 mm. Breadths: 30, 42 mm.

Published for the whole product line

f'b 18 MPaE 7,900 MPaf's 1.9 MPaf'c 13 MPa850 kg/m3SD6JD5Seasoned

ITI F7 Sawn

12 sections. Depths: 66, 90, 138, 185, 230, 280 mm. Breadths: 30, 42 mm.

Published for the whole product line

850 kg/m3SD6JD5Seasoned

ITI Swelite® I-Joist

12 sections. Depths: 200, 240, 255, 300, 360, 400 mm. Breadths: 47, 70, 97 mm.

Published for the whole product line

f'b 29 MPaf't 17.4 MPaE 13,000 MPaf's 3 MPaf'c 22.8 MPaSeasoned

ITI Design Pine® Glulam

10 sections. Depths: 140, 180, 240, 280, 320 mm. Breadths: 65 mm.

Published for the whole product line

f's 3.7 MPa600 kg/m3SD6JD4Seasoned

ITI Prolam® Post Glulam

9 sections. Depths: 90, 95, 100, 115, 120, 135, 140, 150, 190 mm. Breadths: 90, 95, 100, 115, 120, 135, 140, 150, 190 mm.

Published for the whole product line

f'b 33 MPaE 13,300 MPaf's 4.2 MPaf'c 26 MPa850 kg/m3SD3JD2Seasoned

ITI Spec Beam® LVL

7 sections. Depths: 90, 120, 140, 190, 240, 290, 300 mm. Breadths: 45 mm.

Published for the whole product line

E 14,500 MPaf's 8.5 MPaf'c 45 MPa660 kg/m3SD5JD4Seasoned

ITI Flame Fixx dxf® BAL-40 Sawn

6 sections. Depths: 90, 140, 170, 190, 240, 290 mm. Breadths: 45 mm.

Published for the whole product line

550 kg/m3SD6Seasoned

ITI Spec Chord® LVL

6 sections. Depths: 90, 120, 140, 170, 190, 240 mm. Breadths: 35 mm.

Published for the whole product line

E 16,000 MPaf's 7.2 MPaf'c 48 MPa550 kg/m3SD5JD3Seasoned

ITI eXtreme Beam® Glulam

5 sections. Depths: 90, 140, 190, 240, 290 mm. Breadths: 65, 70 mm.

Published for the whole product line

f'b 19 MPaE 8,000 MPaf's 3.7 MPaf'c 14 MPa600 kg/m3SD6JD4Seasoned

ITI eXtreme Joist® Sawn

5 sections. Depths: 44, 68, 88, 120, 138 mm. Breadths: 44 mm.

Published for the whole product line

f'b 18 MPaf't 8.9 MPaE 7,900 MPaf's 1.9 MPaf'c 13 MPa850 kg/m3SD6JD5Seasoned

ITI Design Pine® Post Glulam

4 sections. Depths: 88, 112, 135, 185 mm. Breadths: 88, 112, 135, 185 mm.

Published for the whole product line

f'b 19 MPaE 8,000 MPaf's 3.7 MPaf'c 14 MPa600 kg/m3SD6JD4Seasoned

ITI eXtreme Post® Glulam

4 sections. Depths: 88, 112, 135, 140 mm. Breadths: 88, 112, 135, 140 mm.

Published for the whole product line

f'b 19 MPaf't 6 MPaE 8,000 MPaf's 3.7 MPaf'c 14 MPa600 kg/m3SD6JD4Seasoned

ITI Form Spec® LVL

4 sections. Depths: 95, 130, 150 mm. Breadths: 45, 63, 75 mm.

Published for the whole product line

f'b 40 MPaf't 25 MPaE 11,700 MPaf's 6.5 MPaf'c 45 MPa550 kg/m3SD6JD4Seasoned

ITI Cypress Gold® Sawn

3 sections. Depths: 90, 115, 140 mm. Breadths: 90, 115, 140 mm.

Published for the whole product line

f'b 18 MPaf't 8.9 MPaE 7,900 MPaf's 1.9 MPaf'c 13 MPa650 kg/m3SD6JD3Seasoned

ITI Spec Lam® Glulam

1 section. Depths: 300 mm. Breadths: 42 mm.

Published for the whole product line

f'b 33 MPaf't 16 MPaE 13,300 MPaf's 4.2 MPaf'c 26 MPa650 kg/m3SD6JD4Seasoned

Product

Breadth (mm)

Showing all 166 sections

ITI section properties and characteristic values
Size (D x B)Area (mm2)I (mm4)Z (mm3)f'b (MPa)f't (MPa)
ITI Spec Joist® I-Joist24 sections
200 x 453,24022,135,680-38.4-
240 x 45Spec Joist® 20 Series (ITI®)3,15033,416,250-52-
240 x 45Spec Joist® SJI-36 (ITI®)3,24034,058,880-38.4-
240 x 533,71039,356,917-48-
240 x 584,40845,496,437-59-
240 x 694,96852,223,616-38.4-
240 x 906,84070,597,920-59-
240 x 967,48876,579,776-38.4-
255 x 694,96860,104,106-38.4-
300 x 45Spec Joist® 20 Series (ITI®)3,15055,623,750-52-
300 x 45Spec Joist® SJI-36 (ITI®)3,24056,803,680-38.4-
300 x 533,71065,512,417-48-
300 x 584,40876,176,117-59-
300 x 694,96887,098,976-38.4-
300 x 906,840118,204,320-59-
300 x 967,488128,471,616-38.4-
360 x 58Spec Joist® 70 Series (ITI®)4,408114,790,197-59-
360 x 58Spec Joist® SJI-39 (ITI®)4,524117,112,788-38.4-
360 x 896,942179,707,554-38.4-
360 x 906,840178,122,720-59-
400 x 58Spec Joist® 70 Series (ITI®)4,408144,940,917-59-
400 x 58Spec Joist® SJI-39 (ITI®)4,524147,966,468-38.4-
400 x 896,942227,051,994-38.4-
400 x 906,840224,908,320-59-
ITI Prolam® Glulam22 sections
70 x 322,240914,66726,133-20
70 x 422,9401,200,50034,300-20
90 x 322,8801,944,00043,200-20
90 x 423,7802,551,50056,700-20
140 x 354,9008,003,333114,333-20
140 x 425,8809,604,000137,200-20
140 x 659,10014,863,333212,333-20
190 x 356,65020,005,417210,583-19.2
190 x 427,98024,006,500252,700-19.2
190 x 6512,35037,152,917391,083-19.2
240 x 358,40040,320,000336,000-18.5
240 x 4210,08048,384,000403,200-18.5
240 x 6515,60074,880,000624,000-18.5
240 x 8019,20092,160,000768,000-18.5
265 x 6517,225100,802,135760,771-18.2
265 x 8021,200124,064,167936,333-18.2
290 x 3510,15071,134,583490,583-17.9
290 x 4212,18085,361,500588,700-17.9
290 x 6518,850132,107,083911,083-17.9
290 x 8023,200162,593,3331,121,333-17.9
330 x 6521,450194,658,7501,179,750-17.5
330 x 8026,400239,580,0001,452,000-17.5
ITI Spec Frame® LVL20 sections
65 x 634,0951,441,78144,36334-
70 x 352,4501,000,41728,58334-
90 x 353,1502,126,25047,25034-
90 x 454,0502,733,75060,75034-
96 x 514,8963,760,12878,33634-
100 x 454,5003,750,00075,00034-
100 x 636,3005,250,000105,00034-
140 x 354,9008,003,333114,33334-
140 x 456,30010,290,000147,00034-
170 x 6310,71025,793,250303,45034-
190 x 356,65020,005,417210,58334-
190 x 458,55025,721,250270,75034-
240 x 4510,80051,840,000432,00034-
290 x 4513,05091,458,750630,75034-
300 x 4513,500101,250,000675,00034-
300 x 5115,300114,750,000765,00034-
360 x 4516,200174,960,000972,00033.1-
360 x 5118,360198,288,0001,101,60033.1-
400 x 4518,000240,000,0001,200,00032.6-
400 x 5120,400272,000,0001,360,00032.6-
ITI Design Pine® Sawn12 sections
66 x 301,980718,74021,780-8.9
66 x 422,7721,006,23630,492-8.9
90 x 302,7001,822,50040,500-8.9
90 x 423,7802,551,50056,700-8.9
138 x 304,1406,570,18095,220-8.9
138 x 425,7969,198,252133,308-8.9
185 x 305,55015,829,063171,125-8.6
185 x 427,77022,160,688239,575-8.6
230 x 306,90030,417,500264,500-8.3
230 x 429,66042,584,500370,300-8.3
280 x 308,40054,880,000392,000-8
280 x 4211,76076,832,000548,800-8
ITI F7 Sawn12 sections
66 x 301,980718,74021,780--
66 x 422,7721,006,23630,492--
90 x 302,7001,822,50040,500--
90 x 423,7802,551,50056,700--
138 x 304,1406,570,18095,220--
138 x 425,7969,198,252133,308--
185 x 305,55015,829,063171,125--
185 x 427,77022,160,688239,575--
230 x 306,90030,417,500264,500--
230 x 429,66042,584,500370,300--
280 x 308,40054,880,000392,000--
280 x 4211,76076,832,000548,800--
ITI Swelite® I-Joist12 sections
200 x 474,17925,809,099---
240 x 474,17940,428,675---
240 x 706,34160,959,294---
240 x 978,87985,060,456---
255 x 706,34170,554,683---
300 x 474,17968,627,203---
300 x 706,341103,621,294---
300 x 978,879144,701,314---
360 x 706,341157,697,827---
360 x 978,879220,325,009---
400 x 706,341200,090,267---
400 x 978,879279,620,169---
ITI Design Pine® Glulam10 sections
140 x 65Design Pine® GL8 (ITI®)9,10014,863,333212,333196
140 x 65Design Pine® GL10 (ITI®)9,10014,863,333212,333228
180 x 65Design Pine® GL8 (ITI®)11,70031,590,000351,000195.8
180 x 65Design Pine® GL10 (ITI®)11,70031,590,000351,000227.8
240 x 65Design Pine® GL8 (ITI®)15,60074,880,000624,000195.5
240 x 65Design Pine® GL10 (ITI®)15,60074,880,000624,000227.4
280 x 65Design Pine® GL8 (ITI®)18,200118,906,667849,333195.4
280 x 65Design Pine® GL10 (ITI®)18,200118,906,667849,333227.2
320 x 65Design Pine® GL8 (ITI®)20,800177,493,3331,109,333195.3
320 x 65Design Pine® GL10 (ITI®)20,800177,493,3331,109,333227
ITI Prolam® Post Glulam9 sections
90 x 908,1005,467,500121,500-16
95 x 959,0256,787,552142,896-16
100 x 10010,0008,333,333166,667-16
115 x 11513,22514,575,052253,479-16
120 x 12014,40017,280,000288,000-16
135 x 13518,22527,679,219410,063-16
140 x 14019,60032,013,333457,333-16
150 x 15022,50042,187,500562,500-16
190 x 19036,100108,600,8331,143,167-15.4
ITI Spec Beam® LVL7 sections
90 x 454,0502,733,75060,7505730
120 x 455,4006,480,000108,00054.730
140 x 456,30010,290,000147,00053.530
190 x 458,55025,721,250270,75051.228.8
240 x 4510,80051,840,000432,00049.627.7
290 x 4513,05091,458,750630,75048.226.9
300 x 4513,500101,250,000675,0004826.7
ITI Flame Fixx dxf® BAL-40 Sawn6 sections
90 x 454,0502,733,75060,750177.7
140 x 456,30010,290,000147,000177.7
170 x 457,65018,423,750216,75016.47.3
190 x 458,55025,721,250270,750167.1
240 x 4510,80051,840,000432,000188.2
290 x 4513,05091,458,750630,750188
ITI Spec Chord® LVL6 sections
90 x 353,1502,126,25047,2506542
120 x 354,2005,040,00084,00063.942
140 x 354,9008,003,333114,33362.342
170 x 355,95014,329,583168,58360.341.2
190 x 356,65020,005,417210,58359.340.4
240 x 358,40040,320,000336,0005738.9
ITI eXtreme Beam® Glulam5 sections
90 x 706,3004,252,50094,500-6
140 x 659,10014,863,333212,333-6
190 x 6512,35037,152,917391,083-5.8
240 x 6515,60074,880,000624,000-5.5
290 x 6518,850132,107,083911,083-5.4
ITI eXtreme Joist® Sawn5 sections
44 x 441,936312,34114,197--
68 x 442,9921,152,91733,909--
88 x 443,8722,498,73156,789--
120 x 445,2806,336,000105,600--
138 x 446,0729,636,264139,656--
ITI Design Pine® Post Glulam4 sections
88 x 887,7444,997,461113,579-6
112 x 11212,54413,112,661234,155-6
135 x 13518,22527,679,219410,063-6
185 x 18534,22597,612,5521,055,271-5.8
ITI eXtreme Post® Glulam4 sections
88 x 887,7444,997,461113,579--
112 x 11212,54413,112,661234,155--
135 x 13518,22527,679,219410,063--
140 x 14019,60032,013,333457,333--
ITI Form Spec® LVL4 sections
95 x 454,2753,215,15667,688--
95 x 635,9854,501,21994,763--
130 x 759,75013,731,250211,250--
150 x 7511,25021,093,750281,250--
ITI Cypress Gold® Sawn3 sections
90 x 908,1005,467,500121,500--
115 x 11513,22514,575,052253,479--
140 x 14019,60032,013,333457,333--
ITI Spec Lam® Glulam1 section
300 x 42-----

Characteristic values are taken from ITI Technical Data Sheet, November 2023, ITI Technical Data Sheet, November 2024, ITI Technical Data Sheet, November 2025 and 9 other published sources. Last reviewed against the published catalog 2 years ago. If you are specifying to the current catalog, check the values against ITI's latest published design criteria.

Calculators that carry ITI sections

166 sections available across these calculators.

Timber Complex Beam

AS 1720.1:2010 (Amdt 3)

Timber Column

AS 1720.1:2010 (Amdt 3)

Timber Member (Design Only)

AS 1720.1:2010 (Amdt 3)

Portal Frame Analysis Wizard

Truss Analysis Wizard

Timber Nail

AS 1720.1:2010

Timber Screw

AS 1720.1:2010

Cross-Section Database

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