Marka la tixgelinayo rakibidda barkadda FSPA ee barxadda dambe ee villa, qorsheyn sax ah ayaa lagama maarmaan u ah in la hubiyo ku darid guul leh oo lagu raaxaysto hantida. Go'aaminta booska lagama maarmaanka u ah barkadda FSPA waxay ku lug leedahay xisaabinta aagga looga baahan yahay barkadda lafteeda, iyo sidoo kale meel dheeraad ah oo loogu talagalay sifooyinka ku xeeran iyo tixgelinta badbaadada.
Barkadda FSPA waxay ku timaadaa cabbirro kala duwan, iyadoo cabbirrada ugu yar ay yihiin 5 x 2.5 mitir iyo kan ugu weyn uu yahay 7 x 3 mitir. Si loo xisaabiyo booska loo baahan yahay rakibidda, waa in marka hore la go'aamiyaa bedka barkadda lafteeda:
Xisaabi bedka barkadda FSPA ee ugu yar:
Dhererka (5 mitir) x Ballaca (2.5 mitir) = 12.5 mitir oo laba jibbaaran
Xisaabi bedka barkadda FSPA ee ugu weyn:
Dhererka (7 mitir) x Ballaca (3 mitir) = 21 mitir oo laba jibbaaran
Xisaabintani waxay na siinaysaa booska loo baahan yahay barkadda lafteeda. Si kastaba ha ahaatee, waa in boos dheeraad ah loo qoondeeyaa sifooyinka ku xeeran, wareegga, iyo tixgelinta badbaadada. Talo guud ayaa ah in ugu yaraan 1.5 jeer loo qoondeeyo bedka barkadda ujeeddooyinkan.
Barkadda FSPA ee ugu yar:
Meel dheeraad ah = 1.5 x 12.5 mitir oo laba jibbaaran = 18.75 mitir oo laba jibbaaran
Barkadda FSPA ee ugu weyn:
Meel dheeraad ah = 1.5 x 21 mitir oo laba jibbaaran = 31.5 mitir oo laba jibbaaran
Sidaa darteed, si loogu rakibo barkad FSPA ah barxadda dambe ee villa, ugu yaraan qiyaastii 18.75 ilaa 31.5 mitir oo laba jibbaaran oo boos ah waa in la keydiyaa, iyadoo ku xiran cabbirka barkadda la doortay. Tani waxay hubineysaa in barkadda lafteeda ay ku filan tahay, iyo sidoo kale sifooyin dheeraad ah, wareeg, iyo tallaabooyin badbaado.
Gunaanad ahaan, go'aaminta booska loo baahan yahay ee lagu rakibayo barkadda FSPA waxay ku lug leedahay tixgelin taxaddar leh oo ku saabsan cabbirka barkadda iyo booska dheeraadka ah ee loo baahan yahay si loogu tixgeliyo sifooyinka ku xeeran iyo tixgelinta badbaadada. Iyadoo la raacayo xisaabintan, milkiilayaasha guryaha waxay hubin karaan in barxadda dambe ee gurigooda ay si raaxo leh ugu habboon tahay barkadda FSPA, iyagoo abuuraya meel bannaan oo raaxo leh oo nasasho leh oo kor u qaadaysa quruxda iyo qiimaha hantidooda.