Productos pertinentes con arreglo a los reglamentos de la UE

2.10 Artículo 7, apartado 1, letra j), del RMUE (indicaciones geográficas

2.10.4 Productos pertinentes con arreglo a los reglamentos de la UE

• Prescriptive Ratings

o MBMA Metal Building Systems Manual and Related Bulleting o IBC

o UL Fire Resistance Directory 47

o AISC

o Gypsum Association

o Individual Gypsum Board Producers o ASCE/SFPE 29-05

o ACI 216.1-07

o Fire Test Laboratory Listings o ICC-ES Reports

• Performance-based Design

Appendix A MBMA Fire-Resistive Assemblies Appendix B Additional Fire-Resistive Assemblies

Page 398, Design No. X524 Ratings 1 and 2 Hr., add the following text under heading:

Information contained herein is to be used as a quick reference only, defer to the UL Online Directory for up to date UL recognized components of this listing via http://database.ul.com/cgi- bin/XYV/template/LISEXT/1FRAME/index.htm.

Page 401, Design No. X530, add the following text under heading:

Page 403, Design No. X531 Ratings 1-1/2 Hr., add the following text under heading:

Page 405, Design No. U425, add the following text under heading:

Page 409, Design No. U489 Bearing Wall Rating 1, 1-1/2 and 2 Hr., add the following text under heading:

Page 411, Design No. V421, add the following text under heading:

Page 415, Design No. P516, add the following text under heading:

Page 419, Design No. P265, add the following text under heading:

Page 423, Design No. P268, add the following text under heading:

Page 427, Section 8.5 - Additional Testing, rename section title, delete existing text and construction details, and replace with the following text and three new UL HOW listings:

8.5 Additional Testing Joints

A common joint in a metal building is the so-called head-of-wall (HOW or HW) at the intersection of a fire resistive rated wall (gypsum board on steel studs) with either an unrated or a rated roof. Given that the rated walls of metal buildings may need to be located anywhere within the building, they could align to be parallel, perpendicular, or in-line with the roof purlins, as illustrated in Figure 8.5 for the three basic cases.

Under the sponsorship of the MBMA Committee on Fire Protection and Insurance, two wall joint fire tests were successfully conducted in mid-2007 at Underwriters Laboratories, Inc. (UL) and three new UL assembly listings were issued. These head-of-wall (HOW or HW) joint tests were conducted in accordance with the existing UL 2079 (ASTM E 1966) standard for a head of wall joint in a fire- resistive 1-hr wall, except that a non-rated, non-combustible steel roof assembly, typical of single-story metal building construction, was used in-place of a rated assembly required by these standards.

The joint test assemblies replicated common metal building construction conditions for an unrated

(unprotected) steel roof with purlin inside the wall, as well as being parallel and perpendicular to the

wall. These two HOW joint tests successfully met all the UL 2079 temperature and joint integrity acceptance criteria for a 1-hr fire rating period after Class II movement cycling for 100% compression and extension of the maximum joint width (opening) of 2-inches. At the end of each test, the unexposed side wall temperatures were substantially below the UL 2079 acceptance limits, the ASTM E 119 fire

did not penetrate the wall or HOW joint, and the joint successfully passed a hose stream test. A complete UL Test Report with supporting data is available for download from the MBMA Website.

wall _perp end icula_r to purl_ins wall in ‐line w ith pu rlin wall p arallel to pu rlins Roof Pu rlins

Figure 8.5 Schematic Showing Three Basic Orientations of an Interior

Fire-Resistive Wall Relative to the Roof Purlins

The most common situation for low-rise metal building (Type IIB) construction is that the roofs are not required to be fire resistive, that is they are unrated. For this condition, UL was unable to issue an explicit listing for the actual assemblies as tested, that is with an unrated roof, because the current UL 2079 (ASTM E 1966) test standard only covers joints between rated wall and rated floor or roof assemblies. Instead, the three new UL listings issued (HW-D-0488, HW-D-0489, and HW-D-0490) for 1-hr ratings all reference roofs protected with a ceiling membrane. An explanatory UL letter, dated Feb. 5, 2008, which can be accessed from the MBMA website, more fully documents this application. The UL Design HW-D-0488 has the roof purlin being completely inside the rated wall. UL Designs HW-D-0489 and HW-D-0490 similarly show the construction details for a 1-hour HOW joint for the cases wherein the purlins are oriented parallel and perpendicular to the wall, thereby enveloping all possible single story metal building design conditions. Except for the 1-hour protective ceiling

membrane identified as “1H” below, this HOW joint reflects the assemblies tested and the commonly occurring field condition for metal buildings. Readers are referred to the actual listings in the 2009 UL Fire Resistance Directory itself for these specific joint assembly its construction details.

Several noteworthy aspects of these HOW assemblies include the following: 50

1. The wall joint detail is representative of current and typical metal building construction practices. 2. It is applicable for use with a 1-hr rated gypsum board and steel stud wall assembly in any UL

U400 or V400 series design

3. The roof insulation is continuously draped over the top of wall; it need not be cut and re-attached to the sides of the wall, as had sometimes been required in the past.

4. This HOW joint has now also been qualified for vertical joint movement of up to 2-inches up and down from the installed neutral position. The steel deflection channel within the wall, together with other salient wall construction features that allow for this movement, are fully described in the UL listings.

5. Firestop caulking, as required, is important to the intended fire performance of this joint. 6. All the components of these assemblies are generic, except for the fire caulking product.

7. The UL joint listings cover all the possible design alignments of the roof purlins relative to the rated wall: within the wall, parallel and perpendicular to the wall.

In some cases, metal building construction may also be required to have a fire-resistive roof assembly. For these applications, the HW-D-0488, HW-D-0489, and HW-D-0490 listings in the UL Fire Resistive Directory may be directly applied for the rated HOW joint, with inclusion of the “1H” protective ceiling membrane, for conformance with 2009 IBC Sections 714.1-714.3.

These UL HOW listings allow any individual P200 or P500 series, 1-hr rated Roof-Ceiling Assembly to be used with a 1-hr rated gypsum board and steel stud wall assembly in any U400 or V400 series design. Three available rated roof assemblies, in particular, have been developed through MBMA: P516, P265, and P268. P516 employs Type X gypsum board for the protective ceiling, while P265 and P268 use proprietary acoustical panels.

System No. HW-D-0488 February 11, 2008

Assembly Rating — 1 Hr Nominal Joint Width — 2 in.

Class II Movement Capabilities — 100% Compression and Extension

1. Roof-Ceiling Assembly

The fire rated roof-ceiling assembly shall be constructed of the materials and in the manner described in the individual P200 or P500 Series Roof-Ceiling Designs in the UL Fire Resistance Directory and shall include the following construction features:

a. Purlin

Min 16 ga coated steel. Max spacing as specified in the individual Roof-Ceiling Design.

In document MOTIVOS DE DENEGACIÓN ABSOLUTOS (página 61-66)