Achieving daylighting credits for LEED: Glossary and definitions

Explaining precise meanings for terminology when analyzing daylighting in AGi32.

06/20/2013


Clear sky: A sky that has less than 30% cloud cover. 

Equinox: Time of equal day and night. Either of the two annual crossings of the equator by the sun, once in each direction, when the length of day and night is approximately equal everywhere on Earth. The equinoxes occur around March 21 and Sept. 21. 

Fins: The vertical equivalent of an overhang. They are positioned alongside a window and help to block direct sunlight when the sun is low in the sky. On an east or west exposure, fins can be effective in the morning (east) or late in the evening (west) during the summer and winter months.

Overcast sky: A sky that has more than 70% cloud cover. 

Overhangs: The principal method for eliminating direct sunlight from a vertical window. They are particularly effective on the south face of a building.

Partly cloudy sky: A sky that has 30% to 70% cloud cover. 

Solstice: Longest or shortest day. Either of the times when the sun is farthest from the equator, on or about June 21 or Dec. 21. The summer solstice falls in June in the northern hemisphere and in December in the southern hemisphere and vice versa for the winter solstice. 

Sun path diagram: Tells us where the sun will be on any given date and time for a given location. 

Visible transmittance (VT): Daylight transmittance is the percentage of visible light striking the glazing that will pass through. 

Courtesy: AGI website (www.agi32.com)



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
Safer human-robot collaboration; 2017 Maintenance Survey; Digital Training; Converting your lighting system
IIoT grows up; Six ways to lower IIoT costs; Six mobile safety strategies; 2017 Salary Survey
2016 Top Plant; 2016 Best Practices on manufacturing progress, efficiency, safety
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Big Data and bigger solutions; Tablet technologies; SCADA developments
SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
What controller fits your application; Permanent magnet motors; Chemical manufacturer tames alarm management; Taking steps in a new direction
Commissioning electrical systems; Designing emergency and standby generator systems; Paralleling switchgear generator systems
Package boilers; Natural gas infrared heating; Thermal treasure; Standby generation; Natural gas supports green efforts

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.
Motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
This article collection contains several articles on creating and enhancing a safe workplace in manufacturing.
Maintenance Manager; California Oils Corp.
Associate, Electrical Engineering; Wood Harbinger
Control Systems Engineer; Robert Bosch Corp.
click me