The American Institute of Steel Construction and the Steel Joist Institute recently released a comprehensive roof design guide addressing rain loads and ponding.
Design Guide 40, Rain Loads and Ponding provides guidance for designing roof systems to avoid or resist water accumulation and any resulting instability. It includes an in-depth review of rain loads and ponding effects to help design professionals properly and efficiently design for ponding on roofs constructed with structural steel, open web steel joists, and joist girders.
It also contains several recommended methods of analysis that can be used to consider the effects of ponding, methods of design accounting for ponding effects, and a presentation of the SJI Roof Bay Analysis Tool, along with design examples that illustrate the concepts discussed.
Design Guide 40 is available for download at aisc.org/dg.
Related Stories
| Oct 2, 2014
Effective use of building enclosure mock-ups within the commissioning process
Engineers from SSR offer advice and guidelines on implementing building enclosure mockups on any project.
| Sep 29, 2014
10 common deficiencies in aging healthcare facilities
VOA's Douglas King pinpoints the top issues that arise during healthcare facilities assessments, including missing fire/smoke dampers, out-of-place fire alarms, and poorly constructed doorways.
| Sep 29, 2014
Report finds links between office design, health and productivity
A new report from the World Green Building Council finds “overwhelming evidence” to support office design as a significant influencer of the health, wellbeing and productivity of staff.
| Sep 29, 2014
San Francisco office tower is first U.S. building to earn LEED Platinum v4 certification
One Sansome Street, San Francisco is the first building in the U.S. to achieve LEED Platinum v4 certification. The building is also only the second property worldwide to be awarded with v4 certification.
| Sep 29, 2014
Navy to begin BIM phased implementation in October
The U.S. Naval Facilities Engineering Command will begin its Building Information Management and Modeling (BIM) Phased Implementation Plan in October.
| Sep 23, 2014
Designing with Water: Report analyzes ways coastal cities can cope with flooding
The report contains 12 case studies of cities around the world that have applied advanced flood management techniques.
| Sep 18, 2014
GBCI to administer PEER certification for power grids and building projects
The Green Building Certification Institute (GBCI) will administer certification for the Performance Excellence in Electricity Renewal (PEER) program.
| Sep 18, 2014
Master Painter Institute approves 55 new paint products
The Master Painter Institute has issued approvals for 55 new paint products.
| Sep 10, 2014
AIA, CSI, and NIBS publish updated national CAD standard, includes new BIM module
The NCS helps architects, constructors and operators coordinate efforts by classifying electronic design data consistently and making information retrieval easier, the industry groups say.
| Sep 10, 2014
ASHRAE proposes verification for energy standard
The ASHRAE/IES energy standard would have multiple compliance options to ensure verification of delivered building envelope performance under a new proposal.
