COS Lutheran-PN 890831
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1. For all.excavation.of treo.Cb_e.~.~a,a..~ilt;
of fhe feet. t.he Com:ract0l' ts""~ M.iety
proee411re8 $NS,1l in allre.peets eurrent; stan-
dards utab Us.hedby the U.S. De,..t. ot~Ji()cF. Oeeu....
pationalSefety and Health AdIltin1st:rat1o:n (OSIlA~ on ex-
cavation, trenching, and snoring, all of which are incor....
porst.ed here1n by r~ference.
2. Unanticipated underground structures .4' cause the trench,
safety detail s~eclfied to be either i~praetlcal or un-
feasible. When the Contractor discovers an I.lftaflticij)ated
structure not shown on tne utility plans. the Treach
Safety Engineer should be notified i~di&t~'y.
3. If details shown are not feasible due to unantiCipated
conditions. the Contractor shall notify the Trench Safety
Engineer for re-evaluation.
4. These drawings assume all excavated areas remain free of
water seepage or intrusion. If groundwater, or any other
significant water is detected, the Trench Safety Engineer
shall be contacted ~mmediately.
5. Excavations shaH be inspected after ."'.0 ra.1nStot.~t'.
other hazard increasing occurence to assure the continued
safety of the trench. The Contractor $hall seek guidance
from the Trench Safety Engineer wnere n~ded.
6. Adequate physical barriers with warnina liihting, if nee-
cessary, shall be provided at all locat~ons where animal
or human life may inadvertently enter the excavation.
7. Wh~n installing a support sy,tem, shor1~a will be a~plied
by starting at the top of the t:r$lche.ll!cavation and \tOr-
king downward. All cross beam.. or t~~eh jack$. will be
placed in a true horizontal ~aition. Support system r.....
maval shall begin at the bottom and ,r~~d up~rd. Re-
!DOval of the sy.teen shall bepe~f(Jl"1lI8d: frolll oueslde the
trench us~nl hooks, ropes, etc. '
8. Mat'er:i.ab used for sheet~and.[:~~~
short:ritl c~. unftr~nin&. ,.,~,,11,~ .
eo.dtt,t~. 1'1l!lba1'$ ...-d-11 !Hi.8
IIllJ:*.ot)!~ knots and sftl,tl ~, ~
~as t~f.tie effet.th~ to tb.\'b&tiQi .
9 . A.f~ernate "'1an! for 11" .~t~"r
supportiqS18t:eu~ i. a,. ~lli.a,. c-r11>.. .' sMrlTtg, . eec ~
uy l),e subtlitted by the Contractor for;,8:Jaluationbr ~he
Trench S8.fety Engineer. ..
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1 O. Sioi*' sbo~ .11 be lDu1ft1.bm uflil~ ~.es.J' tbe Tt.e'ftth
Safety'Sns:in"t dlle to ~bansiq sq'tl ~itt9n.f .510"&,
Shown. Itte for a $hon-t8tll t~ ~19f~"'n ~~..tj,onB'
are o"n t-or Hre than 2.4 hours it'M 1!reitCh ~~t.)!nl~.n'.t:
Shall" contacted' so that h~ urevel_ee and 'c~'n3e ();f.
approve.
11. Type" An soil i.,s a cohesiVe soil with an unconfined CQ:lll-
pressive strength greater than 3.000llsq. ft. Type fiB"
is a cohesive soil with an unconfined compressive stren-
gth greater than 1,000115q. ft. and less than 3;OOOI/sq.
ft. type "e" soil is a cohes1ve $011 with an unconfined
compressive strength less than l,OOO'lsq. ft.
12. The Trencb Safety Engineer can be reached by phone at
( 214) 579-00 70.
"
TRENCH SAFETY PLAN
,
ENGINEER
OWNER
PROFESSIONAL ENGINEERING
t91S PETERS RO SUfTf 313 C
IRVING, TEXAS 1506.
(214..519.. 0 010
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JOB
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CONTRACTOR
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DATE
DRAWN BY /? h(
SHEET / OF /
DRAWING N02ftl-/..9.3
SCALE /7:'
CHECKED BY
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