Determining the Ambf Pso

Rule VII & Rule VIII

of the Revised Implementing Ruloa:=~

and Regulations of' PD 1096

Arch./EnP. Rey S. Gabitan, uap, piep

- ((~

Determlnlna the AMBF & PSO ((~

Page so

The following rules shall be observed in the determination of the Allowable Maximum Building Footprint (AMBF) for buildings and related habitable structures. If the stated rules are compared with

(1) Rule VIII Table Vlll.l.- Reference Table on Percentage of Site Occupancy and Maximum Allowable Construction Area (MACA);

(2) Rule VIII Tables Vlll.2. and Vlll.3. (setbacks, yards and courts); or

(3) with the applicable stipulations under this Rule and with the applicable stipulations of the Fire Code,

the more stringent but applicable regulation out of the aforementioned rules should be observed.

/1 Determlnlna the AMBF & PSO ((~

R-1

Example 2 A young bachelor has decided that his R-1 zoned

property, with a Total Lot Area (TLA) of 450 sqm and located in Anti polo City, shall host his dream house.

The Project Site is an inside lot, with a IS-meter wide frontage facing west. The Project Site uniformly slopes at I 0% towards the 14-meter wide street, i.e. the road-right of way (RROW) that is relatively flat and which has 2.0-m wide sidewalks (which includes a 0.80-m wide planting strip) at both sides. The surface at the center of the Project Site frontage is considered as elevation 0.0-m.

A roofdeck shall be provided which will serve as a viewing and entertainment area for guests because of the magnificent view of the Manila skyline and the sunset.

What is the Allowable Maximum Building Footprint (AMBF) for the Project? What is the Maximum Percentage of Site Occupancy (PSO) for the Project?

/1 Determlnlna the AMBF & PSO

Example 2

AMBF = I I x 23.5 = 258.5 sqm

PSO = 258.5/450 = 57.44%

=55%

((~

30 MTRS.

15 MTRS.

R-1 R.- 1, 450 sqm, inside lot, 15 mtn. frontage

/l o etermlnlna the I T~ ....... r .... ,:-_,.;u:.,."T.:.-.,, .. r,..,_~ ... .............. ~ ,_ ,.,_~(tt;#,..yepplyb'to"dl~ r«lll.OIA!N tnA1

......... MIHI\ti)N

PERCEJfTAOE Of OPEN SPACE PERCfNTAGE OF CftN SPACE

ample 2 8Yoc:ct.PNtt' TYP('' 9V OOCUPNICY rrP£-(b~De • ...-~, 11> ......... .,._ ~,.,.. ... ~, 11111:1\ Ptn'I'IIOM ''""':\It cw AIOMd

LOT rtf'£/ ......... Ex

lOCATICIN' ... Hot, Hot. ••• lt.1 H-2, - ......... _,., ....... , .. I<>U"J ...

... _ .. {(VM•J .._

............ E·t atwJ E.J """ ............, WKI E·1111ld """ Check PSO based on &C_0,£-2 (Tr~t· """' & C.D.E-2 •• -.

""" - - """ cr::::: -required TOSL for 1-.'JimNI) ... R-1 str ucture on an R- 1

h.W.Lot ,.,. ' '\;".. . -· inside lot / -- (b'R.tuse

,.,. '"'" ""' ,.,ed lOa• .. $:! -from Table V III.G.6 .......... oc:o~,.

~"<"·- -~ --.. _ ~

"" •. , ~00. R.2use ... 10l1 .. -· - ""' ~··· '"'" .., .... ... .... -... _ .. - ,_,

TLA = PSO + TOSL -· -) - --,.._ ..... PSO = TLA -T OSL - -_ ..

.&<I'll''"' - · """ ~· PSO = 100% - 50%= 50% ... ""' ....

R-1 _ ..

I Page 166 I -_ ..


Example 2

AMBF = I I x 23.5 = 258.5 sqm

PSO = 258.5/450 = 57.44%

6 Based on TOSL req'ts (Table VIII.G.6),....: _ r-_· PS , = 50%

Therefore, the more restrictive is:

PSO = 50%

and AMBF = 50% of 450 = 225 sqm

R-1

225 sqm

15 MTRS.

30 MTRS.

R.- 1, 450 sqm, inside lot, 15 mtn. frontage


Basic

R-2

Example 3

A young couple has decided that their basic R-2 zoned property, with a Total Lot Area (TLA) of 96 sqm and located in Quezon City, shall host their dream house.

The Project Site is a corner lot, with a 9.60-meter wide frontage facing north . The Project Site. The Project Site uniformly slopes at 0% towards the north with a 12-meter wide street, i.e. the road-right of way (RROW) that is relatively flat and which has 2.0-m wide sidewalks (which includes a 0.80-m wide planting strip) at both sides. The s urface at the center of the Project Site frontage is considered as elevation 0.0-m. The west side of the lot is also bounded by another 12-meter wide street.

What is the Allowable Maximum Building Footprint (AMBF) for the Project, if the building shall NOT have a firewall?

What is the Allowable Percentage Site Occupancy(PSO) for the Project, if the building shall NOT have a firewall?


Basic

R-2

Example 3 (without firewall)

T•blt vrt.G.7. Sug~tod Mlnlmumloc Sl .. o, Loc Olmtnok>olo and Typeo byUMO<Ooeu...,cy

-(0<_, lOC

iSoo -VJI.Rgo.n

MU)

HOC -

- c-(«lltfulo< lOC ., LOC l1wough Loc

tsoo R iS.. Rule VJI.Rgo.no

Vll1) Vll.U

IOOOaq S600aq ....... -eoo-.

(w) o \000

mtiOIO(d)

End LOC '-·Through Lot ot Comet Lol

Allutting3ot Mort S.Mta.. tk..

Rlwselc tsoo -va. Rgo. VIU. &

1.) Vll7J

S600aq-..

9 60 mt1or> (wj •oo ........ , IOOO ........ Idl

(w) o \000 -(d)

Page 170



Table VIII. f. Reference Tab'- of Maximum Allowable PSO, Max1mum Allowable ISA, the MACA., the Mlnlmum USA and the TOSL by Type of Land Use Zonina per Lot

BIMI<IWig/ '4 of TOiallot Area (TLA)

Strudure Maxrrum Mlnimum Use or Maunum AIOwal>le USA TOSL 4

Occupancy Duly-Approwd ZonlllQ • Allov.~l>le IS A. (Unpavod (ISA +

(or L&nd PSO c.4 (Paved Open USA) 01>$n UM), -- ......... Soaeeo l

Spaoeo)

ReOidenllal ( Baooc 55, ) 30 15 45 Residenll312(R-2)1

umQef'li$Cy ....... H"""""' d\\'GIIIf'IO ul\ll wi'ttl a 60r 30'4 10 40 B"*llllQ Heighi i.Jml (BHL) of 10.00 melero]

Page 131

Based on Table VIII. I (w/o firewalls):

Basic PSO = 55%

R-2



AMBF = S x 4.6 = 23 sqm

PSO = 23 I 96 = 24%

= 25%

IOMTRS.

Basic

R-2 Basic R-2, 96 $qm, corner lot, 9.60 mtrs. frontage

9.6 MTRS.



T~ V.,.O,, , NWMwr~ TOSL bqull'tl'*"'tt b)' 1.« T,.n.<~¢tt1otl IIOf/lt HifJ/'« ~ N lflllti!IJtlr W _, .,..,..1/Wwt 7otltl« A!'N (TLAI.

Check PSO based on ......... MIHI\«JN

required TOSL for PEROEHTAO£ Of OPOI8PAC£ PERCENTAGE Of Of'EN SPACE 8'f~~y TYf'E'' 8Y OOOUP.o\HCY fYPE ..

R-2 structure o n an R-2 (b PtopoMd De\ llo;.nlllllll5 lb PKipMd DeulcpN~U ~firtwehor~) .,.... ,enWtDM f lirtwtllt « AlcMoed

corner lot LOt TYf£f -· ••• H.l, H-2. ... H-1 ~ • LOCATION' from Table VIII.G.6 l- ........ (-bol ........ , .. t<>AI>"l ... .. - .. ~WM•J .. --"'J E·1811d f-3 """ ~ tnd f·1iltld """ &C O. l~ (Tr~t· -. JC..0.£-2 EJ -. .... - - """ ~·- -" """""""'

... . I c ... t.Gtt .... ,.,. -· "" Of Througfl (bR·1..t" !b"

TLA = PSO + TOSL ..., _ ·- .,.. .. -"' ,_ _ ... (too •. , V..4.Mtd ""'" " ~···

PSO = TLA -TOSL •• - (too-r.-IWII)

•Hde for ... .. _ .... PSO = 100%- 30% = 70%

.. _ .... ..... M'' .. ...... - (bol !b" !b" !b" Basic -· dt~ol ........ "''""- .. ~ .... ....,~ ........... ........ ,..., R-2

..... (2) ""'" _..,.., ........ ,

Page 166 -- - ... ~ ., .. -RROW


Basic

R-2


T"" <>-""'-(IGf.V .. T .... t.oo.ioo ciLoo

- ·l!oMOo-"""liHl_O, .. --e.MOoF_WIBFI_••-Ncl t.e Tallf lei hH cr TtA (d cr .tiOt.ll rw..l). r.,.,.. caA!,ett o ~ ID ~ <ri t.e Iocr.,.. OXJibetd t. AI:JrAbll ~~d~ !NI'f'tlj.Rcfcft:> 1~ \I, f • ..,.,.,..·'-~~« llA

PSO = 70%

CoNr-~ Lee ecw.Lcc N:a.ort ~* Rg. \11 U.cl 3crl.beSW., RokWII .,......_&

(~F"~g.W..Ilof ......... ., VVlt

' "" Page 84-88


Basic


AMBF

PSO

=Sx4.68

= 23/96 = 24%

Based on (Table Vlll.l"l'>.-...,.

PSO = SS%

Based on TOSL req'ts (Table VIII.G.6 ):

PSO = 70%

Based on (Table Vll.l ):

PSO = 70%

((~

IOMTRS.

9.6 MTRS. R-2 Basic R-2, 96 $qm, corner lot, 9.60 mtrs. frontage


Basic

R-2

Example 3



What is the Allowable Maximum Building Footprint (AMBF) for the Project?

What is the Allowable Percentage Site Occupancy(PSO) for the Project?


Example 3 (w/ firewall)





(or L&nd PSO c.4 (Paved Open USA) 01>$n UM),

Soaeeo l Spaoeo)

ReOidenllal Baooc 55, 30 15 45 Residenll312(R-2)1 Medium Denscy

) 30'4 Housing lolllQie iy d\\'GIIIIg ul\ll wi'ttl 60r 10 40 B"*llllQ Heighl l..orri ......... (BHL) of 10.00 me1e10

Page 131

Based on Table VIII. I (w/ firewalls):

Basic PSO = 60%

R-2



AMBF = S x 4.6 = 23 sqm

+ additional area of (2 x S = I Osqm)

- 33sqm

PSO = 33 I 96 = 34%

= 35% IOMTRS.

Basic

R-2 9.6 MTRS.

Basic R-2, 96 $qm, corner lot, 9.60 mtrs. frontage


Basic

R-2


Check PSO based on required TOSL for R-2 structure o n an R-2 corne r lot from Table VIII.G.6

TLA = PSO + TOSL

PSO = TLA -TOSL

PSO = 100%- 25% = 75%

Page 166

T.1W. \111.0 .•. Ninlm-TOSlbqul~ brlot f'n*l.outlon NdJt Hgh«~l .. tti#ttMytlp(Jiybr~wirl~ Totiii""ArN tTt4l

........... MINIMUM f'ERCEHTAGE Of OPE.~ !PAC£ PERCeNTAGE Of CftN SPACE

BY OCCJ.INCY TYPE" BY OCCUPANCY TYPE'" (lew Ptooowd~ tb flrooo5ed Deo.~u ~'"-llor~l with Petmllttecl Flrtwtll• or AlcrNrtd

LOT I'YPEI --. l OCAOON"

... tf.l, H--2. ••• t+Ut.2, - K-4 a'ICI I _ .. ....... ,

a _ ...

"'"""' a toUM•I ....... .. ,._.ol) E-t anc! E-3 "'"' - and E-1 and """ &C O,E-2 (Tr~L- """' & C.D.E-2 •• ""'"" ... - - ... (T- -fl1101llll)nlft ""'"""""' ""

CORotrl ot+ 30'\ ,... 30'<• or Throl.ltfl R·1 11'1d t'o<OI

,.. t'o<OI

, ... ,., ... ·- .._ .. -... ~ ._ ...

c:uhr ..... \'W.4.•nd ...... .. .... - -.. ... ... COtfltl le4t, .. _ .a.. ~ 30' : c - t'o<ol t'o<OI tlo<ol tlo<ol __ , -·· .._ .. .,..,.._ ·-.,,..,to llltbbbQMI ....... ,...., "'""'12l ...... iiCiof'oc Ulllty

_, -- - ..... ,, .. -..


Basic

R-2


- ·l!oMOo-"""liHl_O, .. --e.MOoF_WIBFI_••-Ncl t.e Tallf lei hH cr TtA (d cr .tiOt.ll rw..l). r.,.,.. caA!,ett o ~ 10 ~ <ri t.e Iocr.,.. OXJibetd t. AI:JrAbll ~~d~ !NI'f'tlj.Rcfcft:> 1~ \I, f • ..,.,.,..·'-~~« llA

... _ ,... ...

-t•GI= Roor .,.(rOfA; .,.,.,~ .....

c.....Loo-. 3cr lobe SW., ftC. Rt.oM. & (~F"~g.l1lllof

,_ U:inlHii1CtiM: (~~bJNM:M1bt~~~~t:qllt'*ISI~I"'td t1t TCCIII f.CC Ntf cr ll.A (vrtl or _. rr..- F9Jt ~ II> ~ 1D COf!lllf...,. ltlt br "' COITJO' olt'C d N JICWIIItt~~ d!lAJrgCAMVB) F\JH!r W t. toar!MaN ~ ~)GITl.A_

""'" ''"" ,,,...

PSO = 75%

Page 84-88



AMBF = S x 4.6 = 23 sqm

PSO

Based on (Table Vlll. 1 }:: _ _,

PSO = 60% Based on TOSL req'ts (Table VIII .G.6 ):

PSO = 75%

Basic Based on (Table Vll.l ) :

R-2 PS0 = 7S%

IOMTRS.

9.6 MTRS.

Basic R-2, 96 $qm, corner lot, 9.60 mtrs. frontage


Basic


AMBF

PSO = 33sqm

35%

Check Firewall length:

For 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; provided that only one (I) side property line is used for a firewall in the case of a R-2 structure

80% of IOmtrs = 8mtrs.

Actual is only Smtrs; OK

((~

IOMTRS.

9.6 MTRS.

R-2 Basic R-2, 96 $qm, corner lot, 9.60 mtrs. frontage


Basic

R-2

Example 4


The Project Site is a corner lot, with a 19.20-meter wide frontage facing north . The Project Site uniformly slopes at 0% towards the north with a 12-meter wide street, i.e. the road-right of way (RROW) that is relatively flat and which has 2.0-m wide sidewalks (which includes a 0.80-m wide planting strip) at both sides. The surface at the center of the P roject Site frontage is considered as e levation 0.0-m. The west side of the lot is also bounded by another 12-meter wide street.

What is the Allowable Maximum Building Footprint (AMBF) for the Project, if the building shall NOT have a firewall?

What is the Allowable Percentage Site Occupancy(PSO) for the Project, if the building shall NOT have a firewall?


Basic

R-2

Example 4 (w/o firewall) T•blt vrt.G.7. Sug~tod Mlnlmumloc Sl .. o, Loc Olmtnok>olo and Typeo

byUMO<Ooeu...,cy

-(0<_, lOC

iSoo -VJI.Rgo.n

MU)

HOC -

- c-(«lltfulo< lOC ., LOC l1wough Loc

tsoo R iS.. Rule VJI.Rgo.no

Vll1) Vll.U

IOOOaq S600aq ....... -eoo-.

(w) o \000

mtiOIO(d)

End LOC '-·Through Lot ot Comet Lol

Allutting3ot Mort S.Mta.. tk..

Rlwselc tsoo -va. Rgo. VIU. &

1.) Vll7J

S600aq-..

9 60 mt1or> (wj •oo ........ , IOOO ........ Idl

(w) o \000 -(d)

Page 170


Example 4 (w/o firewall)






./" ......... Soaeeo l Spaoeo)

ReOidenllal 'l·~ 55, ) 30 15 45 12 (R-2)1

Me · ""'Y -HouoinQ I• dwellllg u~~i'th a 60r 30'4 10 40 B"*llllQ Heighi i.Jml (BHL) of 10.00 melero]

Page 131


Basic PSO = 55%

R-2


Example 4 (w/o fi rewall)

AMBF = 14.2 x I 5 = 21 3 sqm

PSO = 213 / 384 = 55.47%

= 55%

20 MTRS.

Basic

R-2 19.2 MTRS.

Basic R-2, 384 sqm, corner lot, 19.2 mtn. frontage



T.1W. \111.0 .•. Ninlm-TOSlbqul~ brlot f'n*l.outlon NdJt Hgh«~l .. tti#ttMytlp(Jiybr~wirl~ Totiii""ArN tTt4l

Check PSO based on ........... MINIMUM f'ERCEHTAGE Of OPE.~ !PAC£ PERCeNTAGE Of CftN SPACE

required TOSL for BY OCCJ.INCY TYPE" BY OCCUPANCY TYPE'" (lew Ptooowd~ tb flrooo5ed Deo.~u

R-2 structure o n an R-2 ~'"-llor~l with Petmllttecl '""""''• or AlcrNrtd LOT I'YPEI --.

corner lot l OCA""' ... tf.l, H--2. ••• t+Ut.2, - K.4 a'ICI I

_ .. ...... , from Table VIII.G.6 a

_ ... "'"""' a toUM•I .......

.. ,._"'! E-t anc!E-3 "'"' - and £.1 and ......, &C O,E-2 (Tr~L- """' & C.D.E-2 •• ""'"" ... - - ... (T- -fl~llll)nlft ""'"""""' ""

CORotrlot+ ,.. 30'<• .... or Throl.ltfl tfo<ol

TLA = PSO + TOSL ,., ... ,... .. -... ~ (b R·2) \'W.4.•nd ...... ~···

PSO = TLA -TOSL .... , ...... ·-""J ..... .. ... ... <:Orfltl le4t,

PSO = 100%- 30% = 70% .. _ .a.. ~ 30'1'"' 30' :c - tfo<ol tfo<ol tfo<ol tfo<"

Basic --· -·· .._ .. .,..,.._ ·-.,,..,to tntbbbQMI ....... ,...., R-2

"'""'12l ...... iiCiof'oc Ulllty _,

Page 166 -- - ..... ,,,.,. -..


Basic

R-2



- ·l!oMOo-"""liHl_O, .. --e.MOoF_WIBFI_••-Ncl t.e Tallf lei hH cr TtA (d cr .tiOt.ll rw..l). r.,.,.. caA!,ett o ~ ID ~ <ri t.e Iocr.,.. OXJibetd t. AI:JrAbll ~~d~ !NI'f'tlj.Rcfcft:> 1~ \I, f • ..,.,.,..·'-~~« llA

PSO = 70%

CoNr-~ Lee ecw.Lcc N:a.ort ~* Rg. \11 U.cl 3crl.beSW., RokWII .,......_&

(~F"~g.W..Ilof ......... ., VVlt

' "" Page 84-88


Basic

Example 4 (w/o fi rewall)

AMBF = 25 x 23.8 = 21 3 sqm

PSO = 21 3/384 = 55.47%

= 55%

211.2 sqm BMed~TC(sL.~~fi~Tan~~-----VIII.G.6 ):

PSO = 70%

BMed on (Table Vll.l ):

PSO = 70%

211.2 sqm

19.2 MTRS.

((~

20 MTRS.

R-2 Basic R-2, 384 sqm, corner lot, 19.2 mtn. frontage


Basic

R-2

Example 4



What is the Allowable Maximum Building Footprint (AMBF) for the Project?

What is the Allowable Percentage Site Occupancy(PSO) for the Project?


Basic

R-2


If firewall is not provide d, Table VIII . I prevaile d.

The re fore, if firewall is to be provide d,Ta ble VIII . ! shall also prevail .

230.4 sqm

19.2 MTRS.

20 MTRS.









Soaeeo l Spaoeo)

ReOidenllal Baooc 55, 30 15 45 Residenll312(R-2)1 Medium De""'Y /

) 30'4 Housing lolllQie lam~ 60r 10 40 d\\'GIIIf'IO ul\ll wi'ttl a

B"*llllQ Heighi i.Jml ~ (BHL) of 10.00 melero]

Page 131


Basic PSO = 60%

R-2


Basic

R-2


If firewall is not provide d, Table VIII . I prevaile d.

The re fore, if firewall is to be provide d,Ta ble VIII . ! shall also prevail :

PSO = 60%

AMBF = 60% of 384 = 230.4 sqm

230.4 sqm

19.2 MTRS.

20 MTRS.


Determining the Ambf Pso

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