NBC s Rule 7 & 8: Focusing on Residential Buildings

Transcription

1 NBC s Rule 7 & 8: Focusing on Residential Buildings Lecture facilitated by Arch. Mary Catherine A. Diaz, pia During the Panigurado Workshop Series 1, August 4, 2014 at PUAN, Davao City to the Community of Churchgoers Rule VII (some of the images presentation slides and notes are prepared by CDEP)

2 Rule VII - Location on Property street No building shall be constructed unless it adjoins or has direct access to a public space, yard or street on at least one of its sides.

3 Rule VII - Location on Property The centerline of an adjoining street or alley shall be considered an adjacent property line.

4 Rule VII - Location on Property 750mm Eaves over required windows shall not be less than 750 millimeters from the side and rear property lines.

5 Rule VII - Location on Property x 1/3 of x Projections beyond the exterior wall shall not exceed beyond a point one-third the distance from an assumed vertical plane located where the fire-resistive protection of openings is first required to the location on property whichever is the least restrictive. Distance shall be measured at right angles from the property line.

6 Rule VII - Location on Property Buildings on Same Property and Buildings Containing Courts: Buildings on the same property and court walls shall be assumed to have a property line between them.

7 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS ABUTMENT A form of a semi-permanent or permanent structure constructed along a property line, usually of masonry or reinforced concrete or other fire-rated material. A firewall define in Rule VII is a form of abutment where absolutely no form of permitted opening, whether temporary / permanent or operable / inoperable is allowed on it. A vent well with a clear width of one (1.00) m is the only permitted opening in an abutment or firewall. FIREWALL - Reinforced masonry or RC separator w/ appropriate fire-resistive rating and positioned between dwellings/ buildings/structures; No openings; Cannot be shared

8 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS ABUTMENT Abutments for Basic Uses/Occupancies forming part of new developments shall be basically similar to the restrictions prescribed for firewalls under Rule VII, to wit: i. Absolutely no abutments are allowed at any property line for any R-1 lot type/location. ii. Abutments shall be allowed on only one (1) side for any R-2 lot type/location. There shall be no firewalls/abutments on the front and rear property lines for any R-2 lot type/location. iii. Abutments shall be allowed on two (2) sides only or on one (1) side and the rear property line/ boundary for any R-3 lot type/location. There shall be no abutments on the front property line for any R-3 lot type/location.

9 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS ABUTMENT Abutments for Basic Uses/Occupancies forming part of new developments shall be basically similar to the restrictions prescribed for firewalls under Rule VII, to wit: iv. Abutments shall be allowed on two (2) sides only for any R-4 lot type/location. There shall be no firewalls/abutments on the front and rear property line for any R-4 lot type/location. v. Abutments shall be allowed on two (2) sides only or on one (1) side and the rear property line/boundary for any R-5 lot type/location. There shall be no abutments on the front property line for any R-5 lot type/location. vi. Abutments shall be allowed on two (2) sides only or on one (1) side and the rear property line/boundary for any C-3 lot type/location. There shall be no abutments on the front property line for any C-3 lot type/location.

10 Rule VII: BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS 7mtrs. or 50% of total side R mtrs. abutment Absolutely no firewalls are allowed for a low density residential (R-1) uses or occupancies; (carport-7mtrs or 50% of side, whichever is smaller)

11 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS 80% of total side R-2 medium density residential (R-2) uses or occupancies, a firewall can be erected on a maximum of 80% of the total length of a side property line & only 1 side property line is used for a firewall

12 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS R-3 85% of total side and 65% perimeter 90% of side and rear 4mtrs. 100% of side and rear not to exceed 50% of perimeter high-density residential (R-3) uses or occupancies, two (2) types of firewall construction may be permitted (85% total side, 65% perimeter) or (90% side/rear, 100% side/rear if 4mtrs. wide provided side/rear does not exceed 50% perimeter)

13 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS R-4 85% of total side and 50% perimeter townhouse residential (R-4) uses or occupancies, firewalls on the two (2) sides of each townhouse unit may be permitted (85% side, 50% perimeter)

14 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS R-5 75% of total side and 50% perimeter 65% of side and 50% rear Residential condominium (R-5) uses or occupancies, two (2) types of firewall construction may be permitted (2 sides=75% side, 50% perimeter) (side and rear=65% side, 50% rear)

15 Rule VII - BUILDING FOOTPRINT AND FIREWALL REQUIREMENTS All existing openings on all firewalls shall be sealed completely to maintain the fire integrity of adjoining buildings/structures. PD 1096 THE NATIONAL BUILDING CODE