UNIFORM BUILDING BY-LAWS, 1984 [UBBL]
IN DESIGN
UBBL : PART III
The required SPACE [dimensions], LIGHT AND VENTILATION to be provided in buildings [By-Laws Sections 30 – 47]
By Laws 32 – 34 - OPEN SPACE AND PLINTH RATIO for buildings abutting a street and a backlane in relation to a lot size and Setbacks
By Law 36 - Requirement for a SPLAYED OR ROUNDED CORNERS Off 3m from wall junctions up to 5m high for a building erected at junctions.
By Laws 37 & 47 - BUILDINGS ABUTTING A STREET ALLOWED A PROJECTION OVER STREET over the building line
37 Extent of projections [open veranda, sunshades and the like] over Roads and setback lines
47 Type of projections allowed over footpaths
• Local Authorities may have different applications and interpretations of these By Laws. Best to consult them before proceeding with designs over setback lines and over Roads
By Law 38 - Width of FOOTWAY AND REQUIREMENTS FOR STEPS AND PEDESTRIAN RAMPS.
• Width of Verandah-way or Uncovered footway to be 2.25m with allowance of 600mm piers/columns from street boundary to encroach into it. Important: Check this requirement against the Local Authorities / PBT specifications.
• Steps on footways with Risers ≤150mm and Tread 275mm
• Pedestrian Ramps >1:10. Important: Check this requirement against the Local Authorities / PBT specifications.
• Refer MS1331 & MS1184 CODES OF PRACTICE ON ACCESS FOR DISABLED PERSONS TO PUBLIC BUILDINGS in conjunction with this clause. Footpaths and ramps to comply with the codes for Public Buildings and Public Access.
• [UBBL SELANGOR Rev2012] By Law 38 [AMENDED]
Width of footway shall be >=2.1.0m.
• [UBBL SELANGOR Rev2012] By Laws 38A and 38B [NEW]
38A(1) New or Renovated building with AirCond area >4,000sqm shall achieve MS1525 specifications for OTTV [≤50W/m2] and RTTV and provided with Energy Management System
38A(2) Roof for ALL BUILDINGS [residential and non-residential] shall achieve thermal transmittance value with U-Value ≤0.4W/m2K for lightweight roof [<50kg and="" deck="" for="" heavy="" m2="" m2k="" metal="" normally="" roof="" roofing="" u-value="">50kg/m2], normally concrete roof.
EXCEPT if they are provided with cooling elements or sunshading
• Refer MS1525 CODE OF PRACTICE ON ENERGY EFFICIENCY AND USE OF RENEWABLE ENERGY FOR NON-RESIDENTIAL BUILDING
Clauses 5.2.1 and 5.5.1
38B(1) & (2) Protection of buildings against LIGHTNING to comply with MS equivalent to the latest IEC 62305 International Electrotechnical Commission
By Law 39 - Requirements for NATURAL LIGHTING AND VENTILATION according to building use.
• Residential, Business & All Buildings except Hospitals & Schools– Natural Lighting & Ventilation >=10% of Clear Floor Area of Space/Room & Openings for Air >=5% of such Floor Area.
• Patients Accommodations in Hospitals - Natural Lighting & Ventilation >=15% of Clear Floor Area of Space/Room & Openings for Air >=10% of such Floor Area.
• Classrooms in Schools - Natural Lighting & Ventilation >=20% of Clear Floor Area of Space/Room & Openings for Air >=10% of such Floor Area.
• Toilets & Bathrooms – Natural Lighting & Ventilation >=0.2sqm per unit wc/latrine/bathroom.
• Important: Method of Measurements for Natural Lighting & Ventilation – Check this requirement against the Local Authorities / PBT specifications as they may read this bylaw differently.
• [UBBL SELANGOR Rev2012] By Law 39 [AMENDED]
39(1) Residential, Business & All Buildings except Hospitals & Schools– Natural Lighting & Ventilation >=10% of Clear Floor Area of the Space OF WHICH Openings for Air ≥ 1/2 of the 10% of the said Floor Area.
39(2) Patients Accommodations in Hospitals - Natural Lighting & Ventilation >=15% of Clear Floor Area of Space/Room OF WHICH Openings for Air ≥ 1/2 of the 15% of the said Floor Area.
39(3) Classrooms in Schools - Natural Lighting & Ventilation >=20% of Clear Floor Area OF WHICH Openings for Air ≥ 1/2 of the 20% of the said Floor Area.
By Law 40 – AIR WELL sizes differ according to height of buildings.
• Min Width of Air Wells >=2.5m x 2.8m = 7sqm for all buildings except
• Lavatories, wc & bathrooms Min Width >=2.0m x 2m [* Read 40(2)(a)(i)]
By Law 41 – With MECHANICAL VENTILATION AND AIR-CONDITIONING Local Authorities may waive By Law 39 with conditions.
Refer By Law 41(3) and 3RD SCHEDULE.
• Important: Check this requirement against the Local Authorities / PBT specifications
• [UBBL SELANGOR Rev2012] By Law 41 [AMENDED]
41(1) Permanently Mechanically Ventilated or Airconditioned Rooms are exempted from complying rules on Natural Lighting, Ventilation and Height of Rooms if,
41(2) Rooms have alternative means if mechanical system fails
By Laws 42 – 44 - MINIMUM AREAS, DIMENSIONS AND HEIGHT CONTROLS FOR ROOMS IN BUILDINGS
i. Habitable Room = Any room >=6.5sqm area excludes Bath, WC, Open Verandah, Terrace or Garage | By Law 2
ii. Headroom = Finished Floor Level to Soffit of the Lowest Projection above the floor | By Law 2
iii. Height of Room = Finished Floor Level to Underside of Ceiling above it excluding plaster thickness | By Law 2
iv. Storey Height = Finished Floor Level to Finished Floor Level above it | By Law 2
v. Wall Height = Base of Wall to the highest part of Wall or ½ height of a Gable Wall | By Law 2
By Law 42 | RESIDENTIALS
• Areas of Habitable Rooms – 1st >=11sqm, 2nd >=9.3sqm & others >=6.5sqm
• Residential Habitable Rooms Width Min >=2m & Height 2.5m
• Kitchen Width Min >=1.5m / Area >=4.5m / Height >=2.25m
• All Buildings - Bathrooms, Porches, Balconies etc Height >=2.0m
By Law 43 | ALL BUILDINGS – Dimensions of latrines, wc and bathrooms
• Refer MS1331 & MS1184 CODES OF PRACTICE ON ACCESS FOR DISABLED PERSONS TO PUBLIC BUILDINGS in conjunction with this clause.
By Law 44 - MINIMUM HEIGHT CONTROLS for ROOMS IN ALL BUILDINGS
• Shophouses - Ground Floor Room Height Min >=3.0m & Other Floors Room Height >=2.5m but if depth of Floor >10.5m then Other Floors Room Height >=2.55m
• Schools – Min >=3.0m High Headroom
• Hospitals - Patients Accommodation Room Height Min >=3.0m
• Factory - Min >=3.0m High Headroom
By Law 45 - HEIGHT OF ROOMS in PUBLIC RESORTS
• Min >=3.5m Room Height. Balconies Height >=3.0m
• Other Rooms Height as per By Law 46 Min >=3.0m at Ground Floor and
• Min >=2.75m at Other Floors
By Law 46 - HEIGHT
OF ROOMS in OTHER BUILDINGS than in By Laws 44
& 45,
• Ground Floor Min >=3.0m.
• Other Floors Height >=2.75m
• Basement Height >=2.5m
• Habitable Room Headroom Height >=2.0m
• Verandahway Height >=3.0m
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