Includes masonry, carpentry, roofing, painting, and plumbing (drainage and water supply).
You can request the electronic file (PDF) through the FOI Philippines portal . Dpwh Blue Book Volume 3 2019 Pdf
Only if your project was bid out before January 2020. But for any ongoing or new project, the 2019 version is mandatory. DPWH Contractors’ Accreditation now requires submitting proof of having the 2019 specifications. Dpwh Blue Book Volume 3 2019 Pdf