PD 1096 notes

• National Building Code of the Philippines:

  • Presidential Decree 1096 (PD1096)
  • Implementing Rules and Regulation (IRR) of PD 1096
• Construction includes all on-site work from site preparation to installation of utilities and equipment
• Building official issues, denies, suspends, and revokes permits
• Permit is required before constructing, altering, repairing, converting, moving, adding, or demolishing a building

  • Exemptions for minor construction and repair works
• Rule 4: Types of Construction

  • Type I: Wood construction
  • Type II: Wood construction with fire-resistant materials
  • Type III: Masonry and wood construction
  • Type IV: Steel, iron, concrete, or masonry construction
  • Type V: Four-hour resistive throughout
• Fire zones determine the types of construction allowed based on occupancy type and resistance to fire

  • Fire-resistive rating is the degree to which a material can withstand fire
• Fire resistive rating is usually expressed in a time period rating

  • It indicates how long a material can withstand being burned
• Firewalls are important as they prevent the spread of fire between or through buildings
• Firewalls allowed on commercial, institutional, and industrial projects under certain conditions:

  • Proud sprinkler system
  • Installation of fire-retardant or fire-suppression devices
  • Maximum 70% of lot perimeter only
  • Right-of-way setbacks are complied with
• Allowable floor areas:

  • Total Gross Floor Area (TGFA) includes services/parking
  • Allowable maximum TGFA determined by number of floors x footprints, dependent on lot type, zoning, and use of firewalls
• Building height limit (BHL) depends on zoning and is measured from established grade line to the topmost portion of the building, excluding allowed projections above the roof like signage, masts, antenna, or telecom tower

  
• Establishing the grade line:

  • Grade line = highest adjoining sidewalk or natural grade line
  • If sloping grade line:
  • If 3 meters or less difference, take highest grade
  • If more than 3 meters difference, take the average
• Establishing the top of the building:

  • If roof is flat, top = rooftop
  • If roof is sloping, top = middle of roof height
• BHL + Right-of-Way (RROW) width dictates the building height limit:

  • 6-7m RROW: 3.0 storeys or 9.0m
  • 4-5m RROW: 2.5 storeys or 7.5m
  • 0-3m RROW: 2.0 storeys or 6.0m
  • Exceptions for Planned Unit Development (PUD)