Wok bilong lukautim ol 'backing board' long olgeta de i nidim ol samting we i stret long ol samting ol i wokim. Ol i mas sekim ol 'metal backing boards' long olgeta taim sapos ol i gat 'rust' na putim 'anti-rust paint' (em i gutpela long olgeta 6-pela mun) long stopim ol bagarap long 'structural' bikos long 'oxidation'. Ol diwai bek bod i mas holim gutpela humiditi (rekomend 40-60% RH) na ol i mas putim marasin bilong rausim ol binatang. Taim yu klinim, yusim wanpela 'neutral detergent' (pH 6-8) na noken skrapim pes bilong en wantaim ol 'high-pressure water jets' (recommended pressure<50 bar) or hard brushes. Avoid impact loads exceeding the load-bearing limit (e.g., <500 kg/m² for steel). Replace immediately if deformation exceeds 3 mm/m.
