From the Architecture Advocay Yahoo Group [Link]:
The initially anotated copy of the 2004 Revised Implementing Rules and Regulations (IRR, effective 01 May 2005) of Presidential Decree (P.D.) No. 1096 (otherwise known as the 1977 National Building Code of the Philippines or NBCP) is available through the following:
1/ Free download at the Latest Publications section of the website of the Professional Regulatory Board of Architecture (PRBoA) at www.architectureboard.ph; anotations supplied by the PRBoA; and
2/ Hardcopy at the United Architects of the Philippines (UAP) Headquarters Office at Scout Rallos in Quezon City; priced at P700.00 each.
The copy previously sold at the National Bookstore (with blue cover and authored by Vicente Foz) contains material errors that tend to confuse or mislead the public into believing that PD No. 1096 supposedly allows civil engineers (CEs) to prepare, sign and seal architectural documents. Sec. 302 of the original text of PD No. 1096 (the 1977 NBC) never stated that CEs can do those things. Another material error is the omission in the IRR of a specific provision that states that professional regulatory laws such as RA No. 9266 should be observed in the implementation of the IRR of the NB.
PRB0A Letter, 26 June 2009 regarding the bookstore copy stated above.
Check it out for yourself.
[2008-06-07] PD 1096 (1977 Natl Bldg Code of the Phils)
[2008-06-07] Natl Bldg Code IRR Rules I-VI
[2008-06-07] Natl Bldg Code IRR Rule VII
[2008-06-07] Natl Bldg Code IRR Rule VIII
[2008-06-07] Natl Bldg Code IRR Rules IX-XXI