Belte r r a Cor p or at ion S afety M an ual D oc I D C H S M BE L 2 0 1 7 Pa g e 3 33 of 53 8 Doc u m e n t Identif icat ion S W P 012 P age Nu m b e r 7 OF 14 Doc u m e n t C r e ation Dat e F e bru a r y 02 2016 Im p le m e n tat ion Dat e Ma rc h 16 2016 7 0 MUSCUL OSK E L E TA L PHYSICAL HA ZA R D S AN D P R E CAU T ION S T O TA KE IN MAN UA L MAT E R IAL H AN D L IN G 71 Fo rcef u l E x er t i o n s F orc e is re late d to t he we ig ht of the o bje c t and ho w quic kl y y ou a tt e mpt to m ove the obje c t The h e a vier the w e i g ht t he more fo rc e is re quire d to m ove the objec t The f a ster or h a rd e r y ou tr y to m ove the objec t whe ther i t i s li fting pushi n g or p ull ing th e hig h e r the fo rc e s a re in volved W hil e ther e a re sp e c ific e x e rtion l im it s that t he bo d y c a n sa f e l y mana ge the ma nne r a nd posi ti on in whic h we i g ht i s ha ndled will ha ve more of a n e f fe c t on t he risk of inj ur y F or e x a m ple holding a 14 kg box c lose to t he bod y a t wa ist he ig ht i s a sa fe pos it ion for most wor ke rs Holding that sa me box a wa y fr om t he bod y with t he a rms outs tre tch e d re q uire s the muscle s of the u ppe r bod y to wor k h a rde r to h old t he posi ti on The for wa rd be ndin g a nd the r e s ult a nt compr e ssi on fo rc e s in the low ba c k mak e the p osit ion uns a fe