@laminarpath
I read your question "Why isn't there a book...", isn't this just one chapter of a larger internet based book based on a need of an individual that will (assuming everyone knows about eng-tips)educate someone with the same question?
Here is a section of code that shows what the forum is trying to explain:
8.6.7 Ceiling Pockets.
8.6.7.1 Sprinklers shall be required in all ceiling pockets.
8.6.7.2 The requirements of 8.6.7.1 shall not apply where all of the following are met:
(1) The total volume of the unprotected ceiling pocket does not exceed 1000 ft3.
(2) The depth of the unprotected pocket does not exceed 36 in.
(3) The entire floor under the unprotected ceiling pocket is protected by the sprinklers at the lower ceiling elevation.
(4) Each unprotected ceiling pocket is separated from any adjacent unprotected ceiling pocket by a minimum 10 ft horizontal distance.
(5) The unprotected ceiling pocket is constructed of noncombustible or limited combustible construction.
(6) Skylights not exceeding 32 ft2 shall be permitted to have a plastic cover.
(7) Quick response sprinklers are utilized throughout the compartment.
Straight and to the point...kind of. Imagine this scenario: Two adjacent conference rooms share a common wall. Each of these rooms have a ceiling pocket: 900 ft³, 35" deep, floor protection has been satisfied, pocket location is 4' from that common wall separating the rooms, construction is noncombustible and QR is used. Does this scenario satisfy the above conditions?
If you say no, then you interpret that the wall does not matter with regard to spacing even though #7 utilizes walls. (definition of "Compartment. A space completely enclosed by walls and a ceiling. The compartment enclosure is permitted to have openings to an adjoining space if the openings have a minimum lintel depth of 8 in. (203 mm) from the ceiling.
If you say yes, then you utilize the wall and ignore minimum 10' horizontal spacing requirement.
Either way you are interpreting the intent of this section of code and cannot directly apply this code to a common ceiling feature in today’s world even if this section was only added in 2002, and subsequently amended in 2007 & 2010 because of interpretations.
You have just rewritten the "All in one" book 3 times in 8 years to incorporate one addition and two revisions of a single code section.
One book cannot be written to account for every scenario, every condition, even if the combined knowledge can be collected, concentrated, and then released as such without interpretation and kept current. This sub-field of a very broad and diverse set is constantly moving and evolving. Uncommon today becomes common tomorrow and a book like you describe could not be productive to those who would undertake that feat to write it, or to the people that would be able to read and apply that much knowledge. Would you even need a degree with a book like this?
I don't know of many good Techs/FPE's/BCO/and others, that do not keep a NFPA within arms reach (most are looking now) along with their experiences all bound into some well loved 3 ring binder or folder that, while may be common knowledge now, was a part of a solid design foundation that was passed on to them from a previously drawing board/field groomed elder. I myself am a student of at least 3 of the respondants above and will continue to learn provided the right questions are asked.
Dan