ASTM E455 PDF

AT 2′ 0″ & 3′ 0″ PANEL SPANS. IN ACCORDANCE WITH ASTM E AND AISI S TESTED FOR: Central States Manufacturing, Inc. Find the most up-to-date version of ASTM E at Engineering Designation: E – 04Standard Test Method for Static Load Testing of Framed Floor or Roof Diaphragm Constructions for Buil.

Author: Gardagrel Tojamuro
Country: Burma
Language: English (Spanish)
Genre: Personal Growth
Published (Last): 17 August 2015
Pages: 378
PDF File Size: 6.90 Mb
ePub File Size: 16.7 Mb
ISBN: 704-4-90978-474-1
Downloads: 15166
Price: Free* [*Free Regsitration Required]
Uploader: Morg

The proposal, as written, requires the testing of each case configuration as tested unless a Case 5 configuration is tested.

QUALITY CHECKS

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. National Design Specification for Wood Construction.

Smart; Staff has proposed revisions to the axtm for diaphragm testing of thin-flange wood Ijoists and the subject has been placed on the agenda for the upcoming Criteria Development Hearing.

It also suggests that designers should avoid applying the diaphragm recommendations for one I-joist product to another. The wall plates have a moment of inertia that is greater than a 2×12 rim board in the plane of bending and also act to constrain asttm rotation of boundary sheathing panels.

Initially, diaphragms deform elastically as a deep beam without perceptible relative movement between framing and sheathing. This highlights the importance of flange splitting and the need for the manufacturer to address the resulting capacity limitations in their design guidance. Abdomen-Part 3 – kylethornton. This standard is not included in any packages. This comparison shall be made by testing single replications of the diaphragm configuration with the highest corresponding design load.

  ANILLO DE BANDL PDF

Issues related to test specimen size and boundary conditions The paper by Waltz and Dolan is the most recent publication on wood-frame diaphragms and is unique in that it reports information on wood I-joist diaphragms. Figure 3 illustrates these trends for a IBC Table Abstract Pre-fabricated wood I-joists are routinely used to construct roof and floor systems in modern lightframe wood construction.

The work by Dolan and Waltz shows that the effect of size and aspect ratio seem immaterial to I-joist Mr. These thicknesses were consistent with 2 in. American Society for Testing and Materials.

Designers often wonder if they are equally applicable to diaphragms framed with wood I-joists. Page 4 May 20, Thank you for this opportunity to comment on the proposed revision.

One of f455 primary functions of a light-frame floor or roof is to serve as a diaphragm that collects in-plane lateral load and transfers it to the shear walls and foundation elements. We have no amendments or corrections for this standard. This analogy works well because we can manage engineering analysis using simple mechanics theory. Proceed to Checkout Continue Shopping. Joists provide out-ofplane stiffening and load transfer between discrete panel sheathing elements.

The Line 6 comparison illustrates what a relatively subtle difference in I-joist xstm composition can have on capacity.

A downside is that deflection measurements are small. Regardless of configuration, observed diaphragm adtm are fundamentally consistent. Page 2 May 20, 3 Add 2. The fullscale tests of Line 16 suggest that the smaller diameter ring shank nail actually out-performed the larger diameter common nail. Douglas-fir LVL flanged I-joists outperformed their southern pine counterparts in 4 out of the 5 similar diaphragm configurations tested Lines You may delete a document from your Alert Profile at any time.

  BARBARA GOWDY WE SO SELDOM LOOK ON LOVE PDF

How well these particular commercial species combinations fit the specific gravity-based fastener design models may also play a role. For this example, observed performance reasonably approximated modeled deformation predictions based on the tested Case 5 configuration. A test of one configuration needs some replication, but with multiple configurations used in comparison to code values, the different and non-replicated tests form a body of evidence that that when used in a pairwise asttm to the Code values is as effective from a statistical perspective as using means of two tests to make the same pairwise comparison.

This article summarizes some of the rationalization and limitations associated with I-joist framing for diaphragm construction.

ASTM – E – Reapproved – Standard Method for Static Load Testing of Framed Floor or R

Even in the NDS seismic tests of the six-story Mr. Typical diaphragm test configuration 24 x 24 ft. Nearly all I-joist diaphragms have been tested with dimensions of 24 ft. The objective of this article is to provide some insight into how shear capacities are rationalized for I-joist diaphragms and to summarize potentially useful trends observed with full-scale testing.

The original rationalizations for these tables were based on an analysis of sheathing and attachment schedules for lumber-framed diaphragms with plywood panel sheathing. It is the responsibility of the user of e545 standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.