Iyada oo leh awooddeeda culeyska sare ee culeyska, rakibidda fudud, dib loo isticmaali karo, caabbinta xirashada sare iyo iska caabinta wax ku oolka ah ee dabacsanaanta, xirmooyinka balaadhinta ayaa si weyn caan ugu ah injineernimada, gaar ahaan codsiyada u baahan xiriiro la isku halleyn karo iyo culeysyo badan.