Purlin

Hauv peb cov qauv, ib lub purlin yog ntsia rau ntawm lub ru tsev trusses los yog cov kab sloping ntawm ib tug steel ncej. Nws txoj haujlwm yog los txhawb lub ru tsev lossis phab ntsa panels thiab nqa cov khoom uas lawv yuam. Nws yog ib qho tseem ceeb heev thiab tseem ceeb tshaj plaws nyob rau hauv cov tsev steel, ua raws li qhov tseem ceeb "choj" ntawm sab nrauv cladding thiab lub ntsiab thav duab.

Cov purlins zoo li "ribs" tsau rau qaum ntawm lub tsev.

Lub ru tsev ntawv yog "daim tawv nqaij" nteg rau ntawm cov tav.

Purlins ua haujlwm rau ntau lub hom phiaj tseem ceeb: txhawb nqa cov cladding panels, hloov cov loads, txhim khu kev ruaj ntseg tag nrho, thiab muab kev tiv thaiv rau lub zog.

Peb lub tuam txhab feem ntau tsim peb hom purlins: C-Section, Z-Section, thiab, rau cov ntawv hnyav dua, H-Section.

C-Purlins: Cov no yog hom siv dav tshaj plaws, haum rau feem ntau ntawm cov tsev lag luam.

Z-Purlins: Cov no yog qhov tshwj xeeb tshaj yog zoo- haum rau cov ru tsev nrog txoj kab nqes hav thiab qhov twg yuav tsum muaj kev sib txuas txuas ntxiv.

H-Purlins (Beams): Cov no yog siv rau cov xwm txheej uas cuam tshuam nrog kev ncua ntev heev thiab hnyav hnyav.

Peb kuj tsim lattice purlins, tab sis cov no tsis tshua muaj thiab feem ntau tsuas yog siv rau cov ntawv tshwj xeeb, ua tshwj xeeb rau cov neeg thov.

Nyob rau hauv lub teeb yuag steel qauv, lub purlin yog ib qho tseem ceeb thib ob yam. Nws ua lub luag haujlwm tseem ceeb, ua pov thawj tias txawm tias cov khoom me me muaj lub luag haujlwm tseem ceeb. Nws txoj kev tsim tau tsom mus rau kev daws teeb meem cuam tshuam txog lub zog, nruj, thiab ruaj khov, nrog rau nws qhov kev ua tau zoo yog qhov tseem ceeb tshwj xeeb rau kev ua kom cov dej ntws zoo thiab huab cua tag nrho- nruj.