R-2 Compute for AMBF, PSO, TOSL and other Development Control

Given Lot Data:

R-2 Zoned Corner Lot with Frontage of 19.20m and Depth of 20.0m

Therefore: TLA=W x D

TLA=384.00sqm

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=3.00m (at two sides fronting RROW)

Side/Rear=2.00m

• Building Width=19.20m-3.00m-2.00m you get 14.20m
• Building Length=20.00m-3.00m-2.00m you get 15.00m

AMBF=Width x Length

AMBFSB=14.20m x 15.00m you get 213.00sqm

b. AMBF via PSOmax Table VIII.1 

AMBF=55%

AMBF=55% of TLA you get 211.20sqm

c. AMBF via TGFA Table VII.1

AMBF=70% of TLA

AMBF=0.70 x (19.20m x 20.00m)

AMBFTGFA=0.70 x (384.00sqm) you get 268.00sqm.

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 (19.20m x 20.00m)

AMBFTOSL=0.70 x (384.00sqm) you get 268.00sqm.

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 (19.20m x 20.00m)

AMBFLOTTYPE=0.90 x (384.00sqm) you get 345.60sqm.

*Most Stringent is AMBF via Table VIII.1 having the least value of 211.20sqm

2. SOLVING FOR PSOmax

Get the AMBF with the least value

PSOmax=(AMBF/TLA)*100

PSOmax=(211.20sqm/384.00sqm)*100

PSOmax=55%

3. SOLVING FOR TOSL

TOSL=100%-PSOmax

TOSL=100%-55%

TOSLmax=45% or 

TOSLmax=45% of TLA you get 172.80sqm

4. SOLVING FOR USAmin

Direct from Table VIII.1 get the listed USA minimum percentage.

USAmin=15% or

USAmin=15% of TLA you get 57.60sqm

5. SOLVING FOR ISAmax

Same Table VIII.1 get the listed ISA maximum percentage.

ISAmax=30% or

ISAmax=30% of TLA you get 115.20sqm

To counter-check you can always add both USA and ISA to match the TOSL value

6. SOLVING FOR MACA

MACA=PSOmax + ISAmax

MACA=55% + 30%

MACA=85% or

MACA=326.40sqm

7. SOLVING FOR GFAmax

Refer to Table VII.G.1 FLAR

GFAmax=TLA x FLAR

GFAmax=384.00sqm x 1.50

GFAmax=576.00sqm

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=211.20sqm x 3 

TGFAmax=633.60sqm

9. SOLVING FOR TGFAmax base from Multiplier in Table VII.G.2

TGFAmax=GFAmax x Multiplier

TGFAmax=576.00 x 1.25

TGFAmax=720.005sqm