St. Louis recently passed a new law requiring all new buildings to be made solar-ready.
All new structures—commercial and residential—must reserve rooftop sections for solar panels to be easily installed. The ordinance does not mandate that rooftop solar be installed.
The solar-ready zone must be at least 40% of the roof area. It can be one contiguous area or multiple smaller sub-zone areas that are no less than five feet in width at their narrowest point. The solar-ready area cannot be obstructed by pipes, vents, HVAC equipment, or other shadow-casting elements.
Construction documents must outline pathways for routing of piping from the solar-ready zone to the building’s electrical service panel or service hot water system. The electrical panel must also have reserved space for a dual-pole circuit breaker to support future solar installations.
New buildings that have permanently-installed onsite generation systems already, buildings whose solar-ready zones would be shaded from sunlight for more than 70% of the day, and buildings where a licensed design professional has deemed that the solar radiation available to the building is not suitable to a solar-ready zone or because the area requirement cannot be met due to extensive rooftop obstructions, may be exempt.
Related Stories
| Feb 9, 2012
Webinar focuses on lessons learned from LEED-certified industrial project
A Construction Specifications Institute webinar will focus on the lessons learned through the design and construction of a LEED-certified industrial project, Better Living Mill Shop, the first industrial building in Central Virginia to earn LEED certification.
| Feb 8, 2012
California likely to eliminate redevelopment agencies
Leaders of California cities had been trying to fashion a compromise with lawmakers after the state Supreme Court ruled the state had the authority to eliminate the agencies and use their property tax money for local services.
| Feb 8, 2012
Project aimed at economical seismic retrofits on historic Memphis structures
The group will develop a low-cost seismic retrofit model that would benefit aging brick-and-mortar structures. It involves bolting steel brackets to existing wooden floor and ceiling joists.
| Feb 8, 2012
Houston signs on to Better Buildings Challenge
The challenge has about $4 billion in federal and private-sector funds, which it will use for building energy upgrades nationwide in the next two years.
| Feb 8, 2012
OSHA offers free health and safety consulting for small businesses
The consultants offer confidential, non-punitive advice.
| Feb 8, 2012
Controversy over pay for prisoners on roofing job in Michigan
The disagreement was over whether the prisoners should have been paid prevailing wage for their brief time on the job because the project was paid for with a U.S. Department of Energy grant.
| Jan 30, 2012
ZigBee and ISO 50001: Two new standards to make buildings greener
These developments demonstrate the dynamic nature of the market and the continued need for development of program standards of many different types that help builders and owners translate high performance and sustainable buildings goals into practical measures on the ground.
| Jan 30, 2012
New firm-fixed-price rules on federal contracts impact construction industry
Contractors will need to be on the lookout for policies such as the Contractor Accountability for Quality clause.