Calculator to Estimate Time to Freezing for Water in an Insulated Pipe

The Whole Building Design Guide (www.wbdg.org) has updated their online calculator to estimate time to freezing for water in an insulated pipe.

Reference: 2009 ASHRAE HoF, Chapter 23, Equation 1 (pg 23.4)

This calculator estimates the time for a long, water-filled pipe or tube (with no flow) to reach the freezing temperature.

Via [Mechanical Insulation Design Guide – Estimate Time to Freezing for Water in an Insulated Pipe | Whole Building Design Guide.]

SMDI Publishes Third Edition of the Guide Specification for Highway Bridge Fabrication With High Performance Steel

For all steel bridge designers interested in using HPS 70W bridge steel, the Third Edition of the Guide Specification for Highway Bridge Fabrication With High Performance Steel has been published.

This new edition of the Guide Specification is based on continued research with high performance steel (HPS) fabrication and welding practices conducted under a cooperative agreement sponsored by the Federal Highway Administration, the U.S. Navy, and SMDI,” Alex Wilson, chairman of SMDI’s Steel Bridge Task Force and manager, customer technical service at ArcelorMittal USA LLC, said. “It includes certain consumables for the flux cored arc welding and gas metal arc welding processes, which were not part of the previous edition. This research advances HPS fabrication and welding practices to the next level, and is highly recommended for all bridge professionals who already work with steel or are interested in learning more about HPS bridges.”

via SMDI Publishes Third Edition of the Guide Specification for Highway Bridge Fabrication With High Performance Steel.

2011 NASCC proceedings now available

From American Institute of Steel Construction

(Chicago, IL) – While there’s no substitution for attending NASCC: The Steel Conference in person, AISC offers the next best thing. As a benefit for attendees and members, we audio tape most of the presentations and synchronize them with the speakers’ PowerPoint presentations. We then post the recorded sessions online at www.aisc.org/2011nascconline (you can find previous conference seminars online by visiting www.aisc.org/freepubs and clicking on “online conference proceedings”).

 

How to Apply Notional Loads in RISA-3D

RISA News has published an article about automating the application of notional loads to a RISA-3D model:

In RISA-3D you can automatically apply notional loads to your structure to comply with your steel code (such as AISC 360). Notional loads take into account a building’s actual out-of-plumbness by adding de-stabilizing lateral loads. The AISC 360 recommends either 0.2% or 0.3% of the vertical loads be applied at each floor level.

You can quickly add these loads to your model by going to the Insert menu and selecting Notional Loads.

via How to Apply Notional Loads in RISA-3D « RISA News.

Seismic Provisions for Structural Steel Buildings (ANSI/AISC 341-05)

AISC Seismic Provisions for Structural Steel Buildings (ANSI/AISC 341-05) are available on the AISC website for free.

This ANSI-approved specification is a companion to the Specification for Structural Steel Buildings (ANSI/AISC 360-05) that extends coverage to the connection detailing and member design requirements for structural steel and composite structural steel and reinforced concrete systems in high-seismic applications. This new standard, dated March 9, 2005, replaces and updates the 2002 Seismic Provisions for Structural Steel Buildings as well as incorporating provisions for two new systems: buckling-restrained braced frames and special plate shear walls. Supplement No. 1, dated November 16, 2005, is incorporated into the new seismic provisions which affects only the section on ordinary concentrically braced frames (OCBF). (5.2MB, 330 pages )

via Seismic Resources.

Specifications and Codes

The AISC has made the 2010 Specification freely available on their website.

2010 Specification for Structural Steel Buildings (ANSI/AISC 360-10)

This specification provides the generally applicable requirements for the design and construction of structural steel buildings and other structures. The 2010 edition of the AISC Specification and Commentary supersedes and is an update of the 2005 edition. Both LRFD and ASD methods of design are incorporated. Dual-units format provides for both U.S. customary and S.I. units.

via Specifications and Codes.

First Public Review of the 2011 AISC Nuclear Specification

from American Institute of Steel Construction:

The AISC 2011 Specification for Safety-Related Steel Structures for Nuclear Facilities AISC N690 is now available for public review. The entire draft specification is available for your review by downloading the attached document. This is an update of the 2006 version of this document ANSI/AISC N690-06. This version of the AISC Nuclear Specification uses the 2010 AISC Specification for Structural Steel Buildings as a baseline document and modifies specific portions of the Specification to make it applicable to the design, fabrication, and erection of safety-related steel structures for nuclear facilities.Comments are welcome on any portion of the draft in this first public review.

Their website also gives information for obtaining a hardcopy.

via First Public Review of the 2011 AISC Nuclear Specification.