yes
There are six ratings of tornadoes ranging from EF0 at the weakest to EF5 at the strongest. About 90 percent of tornadoes are rated EF0 or EF1. The higher the rating, the less often it occurs. Other countries use similar ratings from F0 to F5, as the U.S. did until 2007. The same principle applies here as well.
Great question. I am a LEED accredited professional and architect who has had exposure to the design and documentation of LEED buildings. As a brief background, LEED stands for "Leadership in Energy and Environmental Design". It was put into place by the US Green Building Council many years ago, and in recent years has really caught on. There are a few types of LEED rating systems, depending on the nature of the facility under review. For example LEED-NC is for new construction, LEED-CI is for LEED corporate interiors, and LEED-EB is for existing buildings. Each rating system has its own lengthy list of strategies that can be applied to approve the efficiency and sustainability of a facility. In New Construction, the main categories are Site Selection, Water Efficiency, Energy and Atmosphere, Materials and Resources, Indoor Air Quality, and Innovation in Design. Each of these main categories have many sub-strategies. If the building meets the requirements of the various criteria - credit is given in the form of points. If enough total points are obtained, the building is eligible for LEED ratings. The minimal threshold for rating is called "LEED Rated". If enough extra points are obtained beyond this, the building can vault up to "LEED Silver". Even more points and eventually it becomes "LEED Gold". The highest possible rating is "LEED Platinum". Now back to your question: What are the disadvantages of LEED? I would say that one disadvantage is that designers that are inexperienced with LEED may tend to become pre-occupied with meeting a checklist, rather than spending that time arriving at inventive and creative design solutions specific to that site/project (that may or may not have also achieved LEED rating). Another potential disadvantage to LEED is the belief that a building is "good" merely because it achieved LEED ratings. On a massive scale, this could potentially lead to an era of architecture with an inappropriate standard of judging a building. Having said this, it is my own personal belief that LEED is a positive force.
Grading is evaluating installation or adequacy of ratings and quality of elements used in device or method.
The F stands for Fujita, after the man who invented the scale: Tetsuya Theodore Fujita.
Brown Paper Bags - 2007 is rated/received certificates of: USA:R
Cybill - 1995 Earthquake 4-6 is rated/received certificates of: Argentina:Atp
Modern Family - 2009 Earthquake 2-3 is rated/received certificates of: Netherlands:AL
Dinosaur Train - 2009 The Earthquake 2-13 is rated/received certificates of: Australia:G
Saved by the Bell - 1989 Earthquake 4-21 is rated/received certificates of: USA:TV-G
Nature Unleashed Earthquake - 2005 V is rated/received certificates of: Netherlands:12 USA:PG-13
Building the Gherkin - 2005 is rated/received certificates of: Australia:PG
Building the Biggest - 2006 is rated/received certificates of: Australia:PG
Tonight in That Building - 1991 is rated/received certificates of: Italy:T
Building the Ultimate - 2002 is rated/received certificates of: Australia:G
Monk - 2002 Mr- Monk and the Earthquake 1-11 is rated/received certificates of: Portugal:M/12
Earthquake in New York - 1998 TV is rated/received certificates of: Australia:MA15+ Germany:12 UK:12 (cut)
Team Building - 2011 is rated/received certificates of: Singapore:NC-16