1.Fikrad
Bool laba geesood ah oo dibadda ah waa qalab bir ah, oo sidoo kale loo yaqaan furka laba geesoodka dibadda ah, furka laba geesoodka dibadda ah ama boolal dibadda ah.

2.Daawaynta dusha sare
Habka wax soo saarka ee boolal, daaweynta dusha waa mid ka mid ah isku xirka lama huraanka ah. Waxay ka dhigi kartaa dusha sare ee boolka inay buuxiyaan shuruudaha qaarkood waxayna wanaajisaa caabbinta daxalka, xoogga iyo bilicda.
Waxaa jira noocyo badan oo hababka daaweynta dusha sare ee boolal, kuwa caadiga ah waa sida soo socota:
Galvanizing: Boolalku waxa lagu dhex shubaa xal zinc ah, zinc-kuna waxa lagu dahaadhay dusha sare ee lakabka boolalka iyada oo loo marayo fal-celin elektrokimiko ah, taas oo ka dhigaysa mid aan daxalka u adkaysan karin.
Galvanization-ku-kulul: Ka dib marka boolasha la soo saaro, waxaa lagu dhex milmaa dareeraha zinc la dhalaaliyay, lakabka zinc ayaa ka sameysma dusha sare iyada oo loo marayo fal-celin kiimikaad si loo gaaro ka-hortagga miridhku, u adkaysta daxalka iyo saamaynta kale.
Daawaynta Madoobaynta: Filim bir madow ah oo oksaydh ah ayaa laga sameeyay dusha sare ee boolka iyada oo loo marayo fal-celin kiimikaad si loo hagaajiyo iska caabbinta daxalka.
Daawaynta Fosfatinta: Ku qooy bolt-ka xalka fosfatinta si aad ugu samayso filim fosfat ah oogada korkiisa si loo hagaajiyo caabbinta daxalka.
Daaweynta adkaanta: Iyada oo loo marayo daaweynta kulaylka ama buufinta dusha sare, lakabka dahaarka leh ee adag ayaa laga sameeyay dusha sare ee boolka si loo hagaajiyo xooggiisa oo loo xiro caabbinta.
Kuwa kore waa habab daawaynta dusha sare ee bool ee caadiga ah. Hababka daawaynta kala duwan waxay u dhigmaan xaaladaha kala duwan ee codsiga iyo shuruudaha. Marka la samaynayo daawaynta dusha sare ee bolt, waa in loo fuliyaa si waafaqsan heerarka u dhigma iyo qeexitaannada si loo hubiyo in boolalyada la daweeyay ay buuxiyaan shuruudaha waxqabadka habboon.

3. Waxqabadka heerka
Calaamadda darajada waxqabadka ee boodhka laba geesoodka ah ee dibadda waxa ay ka kooban tahay laba qaybood oo nambaro ah, kuwaas oo siday u kala horreeyaan u taagan qiimaha xoogga taagta ee magaca iyo saamiga awoodda wax-soo-saarka alaabada.
Tusaale ahaan, bolt leh heerka waxqabadka 4.6 macnaheedu waa:
a. Awoodda jilicsanaanta magaca ah ee walxaha boodhka ah waxay gaartaa 400MPa;
b. Saamiga wax-soo-saarka-xoogga ee walxaha boodhka ah waa 0.6;
c. Awoodda wax-soo-saarka magac-u-soo-saarka ee walxaha bolt waxay gaaraysaa 400×0.6=240MPa
Heerka waxqabadka 10.9 boolal-xoog-sare ah, daaweynta kulaylka ka dib, waxay gaari kartaa:
a. Awoodda jilicsanaanta magaca ah ee alaabta boodhka ah waxay gaartaa 1000MPa;
b. Xoogga wax-soo-saarka magac-u-yaalka ah ee walxaha boodhka ahi waxa uu gaaraa 1000×0.9=900MPa.

4. Farqiga u dhexeeya boolal laba geesood ah oo dibadda ah iyo xoog sare.
Dhalooyinka caadiga ah ee laba geesoodka ah ayaa dib loo isticmaali karaa, laakiin boolalka xoogga badan dib looma isticmaali karo.
Dhalooyinka xoogga badan waxay guud ahaan ka samaysan yihiin bir aad u adag oo ah No. 45 steel (8.8s), 20MmTiB (10.9S), waana boolal prespressed. Noocyada is jiid-jiidka, isticmaal fur-furka si aad u codsato prestress-ka la cayimay, iyo noocyada cadaadiska-qaadista, ka fur madaxa torx-ga. Dhalooyinka caadiga ah waxay guud ahaan ka samaysan yihiin birta caadiga ah (Q235) waxayna u baahan yihiin oo kaliya in la adkeeyo.
Boolasha caadiga ah guud ahaan waa fasalka 4.4, fasalka 4.8, fasalka 5.6 iyo fasalka 8.8. Boolal-xoog-sare guud ahaan waa fasalka 8.8 iyo fasalka 10.9, iyadoo fasalka 10.9 uu yahay kan ugu badan.
Daloolada birta ah ee biraha caadiga ah lagama maarmaan ma aha kuwa ka weyn kuwa biraha xoogga sare leh. Dhab ahaantii, godadka birta ee caadiga ah waa kuwo yaryar.