Given Lot Data:
R-1 Zoned Corner Lot with Frontage of 17.00m and Depth of 21.50m
Therefore: TLA=W x D
TLA=365.50sqm
Note: For Corner Lots, the largest setback requirement shall apply to the two sides serviced by the RROW.
SOLUTION:
1. SOLVING FOR AMBF
a. AMBF via Setbacks Table VIII.2
Front=4.50m (at two sides fronting RROW)
Side/Rear=2.00m
- Building Width=17.00m-4.50m-2.00m you get 10.50m
- Building Length=21.50m-4.50m-2.00m you get 15.00m
AMBF=Width x Length
AMBFSB=10.50m x 15,00m you get 157.50sqm
b. AMBF via PSOmax Table VIII.1 (not applicable R-1 not listed)
AMBF=N/A
c. AMBF via TGFA Table VII.1
AMBF=70% of TLA
AMBF=0.70 x (17.00m x 21.50m)
AMBFTGFA=0.70 x (365.50sqm) you get 255.85sqm.
d. AMBF via TOSL Table VIII.G.6
30% Open Space therefore 70% allotted for Building Footprint
AMBF=70% of TLA
AMBF=0.70 x (17.00m x 21.50m)
AMBFTOSL=0.70 x (365.50sqm) you get 255.85sqm.
e. AMBF via Lot Type/Location (Figures VIII.2-VIII.8)
10% Open Space therefore 90% allotted for Building Footprint
AMBF=90% of TLA
AMBF=0.90 x (17.00m x 21.50m)
AMBFLOTTYPE=0.90 x (365.50sqm) you get 328.95sqm.
*Most Stringent is AMBF via Setbacks having the least value of 157.50sqm
2. SOLVING FOR PSOmax
Get the AMBF with the least value
PSOmax=(AMBF/TLA)*100
PSOmax=(157.50sqm/365.50sqm)*100
PSOmax=43.09%
3. SOLVING FOR TOSL (USA + ISA) Table VIII.1 or via Table VIII.G.6
TOSL=100%-PSOmax
TOSL=100%-43.09%
TOSLmax=56.91%
4. SOLVING FOR USAmin
Note: Since R-1 not listed in Table VIII.1 alternative way is to compute for the area of the Front yard.
 |
| USAmin=Front Yard |
USAmin=(4.50m x 17.00m) + [(21.50m - 4.50m) x 4.50m]
USAmin=153.00sqm
or in percentage = (153sqm / TLA) x 100 you get 41.86%
5. SOLVING FOR ISAmax (ISA=all sides and rear yards)
Computed TOSL=56.91% convert to sqm
TOSL=56.91% x TLA
TOSL=208sqm.
ISAmax=TOSL-USAmin
ISAmax=208sqm.-153sqm.
ISAmax=55.00sqm.
or in percentage = (55sqm / TLA) x 100 you get 15.04%
6. SOLVING FOR MACA
MACA=PSOmax + ISAmax
MACA=43.09% + 15.04%
MACA=58.14% or
MACA=212.50sqm
7. SOLVING FOR GFAmax
Refer to Table VII.G.1 FLAR
GFAmax=TLA x FLAR
GFAmax=365.50sqm x 1.50
GFAmax=548.25sqm
8. SOLVING FOR TGFAmax base from Table VII.1
TGFAmax=PSOmax x BHL or TGFAmax=AMBF x BHL
PSOmax=% of TLA
Get BHL value of floors/storeys in Table VII.2
TGFAmax=157.50sqm x 3
TGFAmax=472.50sqm
9. SOLVING FOR TGFAmax base from Multiplier in Table VII.G.2
TGFAmax=GFAmax x Multiplier
TGFAmax=548.25 x 1.50
TGFAmax=822.375sqm
In comparison to an excel calculator we get the same results
Other needed development controls like building bulk (volume) will depend on lot conditions in terms of its terrain, local restrictions if facing Road Right of Way on applicable angular plane etc.
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