Page 17 - Arkansas 811 Magazine 2019 Issue 4

orr1oN 2 » TIMBER SHORING ; -‘V V . ' ~—
Tlus rs a system at wooden waters, eress braees, ‘V... s . ‘
and upnghts, that allpporl the watts of a treneh ’ .- .
er exeavatren. The OSHA standard speerhes the 5- y ‘ _ '
srzes ofumbcrs',ba.~1:d upon the vanous types at ‘ .—

sun, the depth of the treneh or nxcavatmn, and the

type of umber used to bunld the strueture (oak ur — ' , ’
Douglru fil) As a praetreal matter, [cw euntraeturs ‘ ‘ r

erutrhtres use trmhershorrng. Them are a numbcr _ , > , . _

of reasnns, mcludmg hmrted avarlabrhty of umber, ’ \ \ ‘A _V 3-.

the need [or ~k|llcd earpenters to burtd the system, _ V ‘\ Q is ‘ " ‘
the tune requrred te bur1d,satetyrssues, and the easy 5 . ‘y - _ J‘ ', ._ _",‘ 1
ava1lab|l1tyoiotl1cI, mere eest cffutuvc, systems. ‘.357, ‘-,1 “ ' - _ ,'—— ~''~ : . '

-- * My 3,’

0l7l'lON3»ALUMINUM HYDRAULIC 1‘ . . «—:-—~ \, ' -
suoxmc _. it “ 4-:
These systems have replaeed a lot ui umber shermg. '-
Devetuped m Callfnmm m the 1ate wsus, there are

two types ui hydrauhe shurmg vcmcal shores and y

honzunkal waters. Beth cmploy atummum rarls and .

hy drauhe eyhnders that apply pressure tn the wr1ll~ \

er a treneh, ereatmg an ”ar:}ung cffutt” that prevents

the walls [mm eouapsmg I

orr1oN A » ‘FRENCH SHIELDS

These are ahmunum or steel struetures desrgned tu ,~

pmtcct workers by wrthstandmg the torees rmposed " ' .

by a eayeur. Regardtess oi the matenat they are I

made at, the prmerptes are the same (

orr1oN 5 » SITE-SPECIFIC ENGINEERED . ’ ‘ . ..

SYSTEMS ,

D:cr1~Ionr1lIy the eharts m the OSHA standard for s — a‘

sluprng and bcnclung, or umber shunng, as well as v‘

manuraetured systems sueh as atumrnum hydrauhc s - I’

shur-mg er treneh shretds, mu net work. Tlmm may ‘

he phssrte eondrtmns that errst or other raeters that _ .,

prevent the use of sueh systems. In these srtuatruns, M‘, _

a mgwlcmd pretessrctnal cngmccr must desrgn a ‘~

system speeu'-teauy fur the yub. The engrneer has to ‘ ' 2,

he regrstered In the state where the system wru be , ‘ ‘ .- ‘\\_
used, and w1llhavclo”~tr1mp" the desrgn There I , , L; ‘ \
are addmonal requrrements, as wen, an of whreh are 3 ‘

eevered m the OSHA standard. __ ‘ t ‘ ‘ vi

"-1 A :

Te sumrnarrze, by having a property tramed and r1u- t ‘ ‘“ gt " '

|honznd "Cumputcnl I’cx.~0n" on srte, following the . t r r vu - r

General Requrrements seetrun at the OSHA standard, ' - , V 3
carefully elassrtymg the «:11, and Iluhzmg protee- 1.: , K

hvc systems, we ean an work sately m trenehes and ‘ tg ' id; . \
erearatmns. an 7 ,' tsr‘ ‘ i t ‘g

‘ T 1

l:t1:Iar'5 Nate 'I'hz5 Is IV1t']aIIrI71 tzmtifivml tzrllcle m thts .' ., -' ‘

50:05 that dtscnsscs spcrzjlr 5Icp5 that tanmzclws and . 4, . “.1 ‘

uflthnes (‘rm Inkc Ia hrlp A‘H5MrA' thr st1ft'I_|/ 0/Ifmr persalmd. " 4 ' "1 { :..

Ol7vtmA5I_I/, M1515 /1rI|7U('VUIt“mU/Ih(' s1A1J[A'r! [I15 tmpossllrvlk “r. ': _ ‘ HT‘ ;

te propcrly ml/Cr Ihc low: In /A45!/au1'n'It1!:ztt'Iy shun ‘* ' ‘;._ s "

tzmclcs. Cmvir/1cIm'5 and ufthnes Mn/okvrd m MIldA‘1'X1'DMIIA1 * ‘ * ’ if

than mu...edad.1.tmmtrtmtmugto ensure’ warkm'5r1ft'I_1/ . ,9 ; .

Hop] tr..t.,a. :m‘IHt‘ut!« «Mitt: tvtlrzp pvurrfl 1,‘: k: I ‘ ‘ vi :1
t,,y..t ma. «7ttt‘M< (N)!I<pmItL‘AAltZ!l(/ (wt! mm ,aa,,,..,.,. Mtkhnn ,.‘§,$_. )! . \-,-.5 5 7 » _ _—
2019 Issued Arkansas an Magszrrta . 15