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Torsional rigidity and lateral stabi...

Hindman, Daniel Paul.

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Torsional rigidity and lateral stability of structural composite lumber and I-joist members.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Torsional rigidity and lateral stability of structural composite lumber and I-joist members./
Author:	Hindman, Daniel Paul.
Description:	223 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3384.
Contained By:	Dissertation Abstracts International64-07B.
Subject:	Engineering, Agricultural. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096981
ISBN:	0496445960

Torsional rigidity and lateral stability of structural composite lumber and I-joist members.
Hindman, Daniel Paul.

Torsional rigidity and lateral stability of structural composite lumber and I-joist members. - 223 p.

Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3384.

Thesis (Ph.D.)--The Pennsylvania State University, 2003.

This research study examined the effects of the unique elastic properties between solid-sawn lumber, structural composite lumber (SCL) and I-joist materials upon torsional rigidity and lateral torsional buckling design. Test materials used included rectangular sections of machine stress rated (MSR) Lumber, laminated veneer lumber (LVL), parallel strand lumber (PSL), laminated strand lumber (LSL), LVL I-joists and LSL I-joists.

ISBN: 0496445960Subjects--Topical Terms:

1019504
Engineering, Agricultural.

Torsional rigidity and lateral stability of structural composite lumber and I-joist members.
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020 $a 0496445960
035 $a (UnM)AAI3096981
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040 $a UnM $c UnM
100 1 $a Hindman, Daniel Paul. $3 1933748
245 1 0 $a Torsional rigidity and lateral stability of structural composite lumber and I-joist members.
300 $a 223 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3384.
500 $a Advisers: Harvey B. Manbeck; John J. Janowiak.
502 $a Thesis (Ph.D.)--The Pennsylvania State University, 2003.
520 $a This research study examined the effects of the unique elastic properties between solid-sawn lumber, structural composite lumber (SCL) and I-joist materials upon torsional rigidity and lateral torsional buckling design. Test materials used included rectangular sections of machine stress rated (MSR) Lumber, laminated veneer lumber (LVL), parallel strand lumber (PSL), laminated strand lumber (LSL), LVL I-joists and LSL I-joists.
520 $a The elastic constants of solid-sawn lumber and the SCL materials were measured. The ratio of the elastic modulus divided by the shear modulus (E:G) was found to be statistically different for the solid-sawn lumber and each SCL material.
520 $a The torsional rigidity (GJ) of the test materials were measured. The measured GJs of all the SCL materials were significantly different from the GJ of the MSR Lumber. The measured torsional rigidity of the LVL I-joists and LSL I-joists were not significantly different.
520 $a The measured E:G ratios and GJ values were used to predict the torsional rigidity of each test material. Isotropic and orthotropic torsion equations were used to predict the GJs for the rectangular materials; a finite element method using both the isotropic and orthotropic properties predicted GJs for the I-joist materials. The measured torsional rigidities of the MSR Lumber and LSL materials followed the isotropic elasticity predictions while the measured torsional rigidities of LVL, PSL and LSL followed orthotropic elasticity predictions. The measured GJs of LVL I-joist and LSL I-joist were best predicted by the orthotropic torsional rigidity predictions.
520 $a An unbraced cantilever beam configuration was experimentally loaded to identify the critical buckling load (CBL) of test materials for three different lengths for comparison to predictions based upon theoretical and design methods. The measured CBLs of the MSR Lumber and LSL materials were not significantly different (alpha = 0.05), while all other SCL and I-joist materials were significantly different (alpha = 0.05) for the same slenderness ratios.
520 $a The actual E:G ratios of the SCLs, rather than the assumed ratio of 16.0, provide a more accurate prediction of the CBLs. The measured flatwise bending stiffness and torsional rigidity coupled with the full section properties provide the best prediction of the CBL of I-joist beams.
590 $a School code: 0176.
650 4 $a Engineering, Agricultural. $3 1019504
650 4 $a Agriculture, Wood Technology. $3 1031154
690 $a 0539
690 $a 0746
710 2 0 $a The Pennsylvania State University. $3 699896
773 0 $t Dissertation Abstracts International $g 64-07B.
790 1 0 $a Manbeck, Harvey B., $e advisor
790 1 0 $a Janowiak, John J., $e advisor
790 $a 0176
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096981