Class 8B is a Public Protection Classification (PPC ®) for communities that provide superior fire protection services and fire alarm facilities but lack the water supply required for a PPC of Class 8 or better.

2014年4月1日 · * Class 8B is a PPC for communities that provide superior fire protection services and fire alarm facilities but lack the water supply required for a PPC of Class 8 or better. This …

2004年5月31日 · ISO has introduced Class 8B for communities that cannot meet the minimum 250 gpm uninterrupted flows for a two-hour duration in all or a part of their fire-protection area. To achieve a Class...

The X and Y classifications replace the former 9 and 8B portions of a split classification e.g. a community formerly graded as 6/9 will change to a split 6/6X. To the individual property owner, the X/Y designations offer the potential for decreased property insurance premiums.

“8B” po • A community currently graded as a split 6/9 classification will now be a split 6/6X classification; with the “6X” denoting what was formerly classified as “9.”

We generally assigns Class 10 to properties beyond 5 road miles. The X and Y classifications replace the former 9 and 8B portions of a split classification, respectively. For example, a community formerly graded as a split 6/9 will change to a split 6/6X.

The GCR Class 8B was a class of 27 two-cylinder steam locomotives of the 4-4-2 wheel arrangement built between 1903 and 1906 for the Great Central Railway. They were nicknamed "Jersey Lillies" after the famous music star Lillie Langtry.

ISO has filed corresponding relativities/loss costs to complement the new “X”, “Y”, and 10W classifications. Reports generated through the Passport Online platform will include these new values. For customers not adopting the new program, the split 9 and 8B equivalent values will be displayed in parentheticals.

With this revision, a new Protection Classification 8B is being introduced. The classification 8B rating factor will be the same as the classification 9 rating factor. In that regard, please find attached a copy of the revised Community Mitigation Classification Manual rules.

在数据包传送的术语叫开销，意思就是除了实际需要的数据之外的一些数据bit，例如冗余校验等。 那大家看上面的编码的数值比就知道了，例如8B/10B，要把8bit的实际数据扩展为10B，那开销就是20%，效率就只有80%了，更通俗来说就是增加了20%的非实际数据的传输 。