Shuruudaha biraha midabada leh ee loo isticmaalo qalabka guriga ayaa aad uga adag kuwa qalabka dhismaha. Farqiga muhiimka ah wuxuu ku jiraa xaqiiqda ah in xaashiyahani ay si toos ah u soo bandhigayaan aragtida macaamilka; waa inay isla mar ahaantaana qanciyaan heerarka adag ee laba-geesoodka ah ee "muuqaalka eber-cilada" iyo " adkeysiga fasalka 30-sano." Waraaqaha midabaysan waxay u adeegaan sida walxaha dibadda ugu dambeeya ee qalabka la dhammeeyey - sida talaajadaha iyo mashiinnada dharka - waana la suuq geeyaa oo la iibiyaa iyada oo aan la marin habka rinjiyeynta sare. Qolalka bandhigyada tafaariiqda, macaamiishu waxay bayaan alaabtan meel dhow waxayna sameeyaan isbarbardhig soo noqnoqda; sidaas awgeed, xitaa xagashada ugu yar, midabka midabka, ama iswaafaq la'aanta dhalaalka waxay keeni kartaa soo laabashada alaabta. Tani waxay ka dhigaysaa "mid ka mid ah alaabta birta ah ee leh shuruudaha tayada dusha sare ee ugu saxsan," oo aad uga sarreeya kuwa loo isticmaalo xaashida midabka midabka leh ee loo isticmaalo dhismaha. Shuruudaha Saxnimada Sare ee Substrates: Substrate-ka galvanized waa in uu ahaadaa mid ka madax banaan cilladaha qaabka -sida geesaha mawjadaha ah, warping, ama camber-sida cilladahaas oo kale waxay xoqin karaan rollers daahan inta lagu jiro codsiga xawaaraha sare leh, taas oo kicinaysa cilladaha dahaarka toosan. Xakamaynta saxda ah ee Dhumucda Dahaarka: Dhumucda dahaarka ayaa si toos ah u saameeya caabbinta daxalka ( xisaabinta ilaa 19.1% cimri dhererka), kharashyada wax soo saarka, iyo socodsiinta; sidaas darteed, waa in la hagaajiyo ilaa ugu badnaan iyadoo la hubinayo in dhammaan shuruudaha waxqabadka la buuxiyey.