Westhaven 1-SP130508 TRENCH SAFETY PLAN
UTILITY LINES
1NESTHAVEN, PHASE 1.
(IN AND AROUND SH 121 & BUSINESS 121)
COPPELL, TEXAS
FOR
STANDARD PACIFIC OF TEXAS, INC.
Note: Soil information indicates that a stiff clay(Type"Bp soil)will be found on the project
site The following applies:
H=314 in stiff clay(Type"B"soil or better).
H = 1..or greater in Type"C" soil
9 #4,a,o.f
4
$ RICHARD NALQIEIi..,;
i+.. 76134 ... .._
Trench Safety Plan tor:CULLUM CONSTRUCTION ..1 of 5
Job No:6348 Richard Haider P
Westhaven,Phase 1 1}ate fin Trench Safety Engineering
ISH 121 &Business 121) 833 Rochelle
Cappell,Texas Scale :Asshown Rod Oak,Texas 75154
Design:13.H. 1.800-9003775
r•, GENERAL NOTES
1. For all excavations of trenches,which will exceed a depth of five feet, the Contractors
trench safety procedures shall meet the current standards established by OSHA on
excavations,trenching, shoring, and confined spaces, all of which are incorporated
herein by reference.
2. If details shown are not feasible due to unanticipated conditions,the Contractor shall
notify the Trench Safety Engineer for re-evaluation.
3. These drawings assume all excavated areas remain free of water seepage or intrusion.
Excavations shall be inspected,after every storm or other hazard-increasing occurrence
to assure the continued safety of the trench. The Contractor shall seek guidance from
the Trench Safety Engineer where needed.
4. When installing a support system,shoring will be applied by starting at the top of the
trench excavation and working downward. All cross beams, trench jacks, etc., will be
placed in a true horizontal position. Support system removal shall begin at the bottom
and proceed upward, performed from outside the trench.
5. Materials used for sheeting, sheet piling, bracing, shoring,etc., shall be in good
serviceable condition. Timbers used shall be sound and free from large or loose knots
and shall be designed and installed so to be effective to the bottom of the excavation.
6. Alternate design for use of steeper slopes of the use of supporting systems, i.e., piling,
cribbing, shoring, etc., may be submitted by the Contractor for evaluation by the Trench
Safety Engineer.
7. Slopes shown shall be the maximum unless changed by the Trench Safety Engineer
due to changing soil conditions. Slopes shown are for a short-term period. If
excavations are open for more than 24 hours, the Trench Safety Engineer shall be
contacted for evaluation.
8. Cohesive soils are classified by their unconfined compressive strength, as follows:
(psf=pounds per square foot;tons/sq ft =tons per square foot)
Type"A"...more than 3,000 psf(1.5 tons/sq ft)
Type"B"...more than 1,000 psf(0.5 tons/sq ft)and less than 3,000 psf(15 tons/sq ft)
Type "C"...less than 1,000 psf(0.5 tonslsq ft)that is not flowing or submerged,
Trench Safety Plan for CULLUM CONSTRUCTION .2 of 5
Job Ho:Gam$ Richard Haider P.E.
Westhaven,Phase 1 Trench Safety Engineering
4SH 121 ft Business 121) Date :09 Apr 2013 1133 Rachelle
Coppell,Texas SCJ1B As shown Red Oak.Texas 75154
Design:R.H. 1800-11.9775
Note: Either benched or sloped is acceptable
2' min. 10'max.
ISpoil
•
+ H
ti
:4•max Ss.
As Required
•
TYPICAL OPEN CUT CROSS SECTION
N.T.S.
Trench Safety Plan for CULLUM CONSTRUCTION Pg:3 of:5
Job No 6340 Richard Haider P.E.
Westhaven.Phase 1 Trench Safety Engineering
(SH 121 &Business 121)
Elate :<"'�r2413 033 Rachelle
Coppell,Texas Scale :As shown Red Oak,Texas 75154
Design:1111. 1-800.9009775
Spaced 6'to 8'o.c.in unweathered limestone.
Spaced 4'n.e. in stiff clay(Type"B"soil)and weathered
Spaced 4'o.c.,In thy Type"C soil sheeted with 314",14-ply Finland.
Birch,or 1-1J8"CDX plywood, or approved equal.
Standard'hydraulic shoring
4'min. 6'max
I Spoil
•
rsa,
As per manufacturer's
' ata and limitations
d
: :2'max.
As Required
The aluminum hydraulic shoring listed below are just three
examples of trade names of'standard'hydraulic shoring which
- are acceptable.The examples are with a width maximun of 55"
Speed Shore Hydraulic Shores, model No V-7-SS or V-5-55,
orV-3.5-55,or equal. Shores may stacked.
GINS Vertical Shores,model No HVS-73455 or HUS-53455,
or HVS353455,or equal.Shores may be stacked.
EFFICIENCY PRODUCTION,models No.7X3455-S or 5X3455-S,
or 3.5X3455-S,or equal. Shores may be stacked.
Alsoavailableare Speed Shore'Heavy Duty'shores,which rails run in the 8", 12', and 16'range.
If sheeting is desired,314",14-ply Finland Birch, or 1-118"CDX plywood
or equal,is acceptable.
ALTERNATE HYDRAUUC SHORING CROSS SECTION
N.T.S.
Trench Safety Plan for:CULLUM CONSTRUCTION Pg:4-of:5
Job No:6318 Richard Haller A.E.
Westhaven,Phase 1 Date :�rApr 2013/Trench Safety Engineering
(SH 121 &Business 121) 833 Rachelle
Coppell,Texas Scale :Ifs shown Red Oak,Texas 75154
Design:It D- 1-8M-9000775
---
1, 2'min. 10'max
I Spoil
4'max.
. . . . . . . . . .
.:.:.:.•....-..-.....-..:.:.:..
. . ...„.... . . . . ... ,.
................ . ... .............
..—.-.-_,.-.- . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
..-...-.-...-.- . . . . . . . . . . . . . . . . . . . . . . . . . .
' ' ' ' ' • — • ' ' ' ' • ' ' ' ' ' ' • ' '
. . . . . . . .
...*-......-.-. .,
r As Required
alossSECTION
N.T.S.
.....
Trench Box/shield side wall capacity shall be equal or greater than 490 psf
for Type"B"soil and equal or greater than 840 losf for Type"C"soil If there
are any changes In soli conditions,the Trench Safety Engineer shall be
contacted for evaluation.
Any manufacturedlrated trench shield system,such as Manhole Rings,Modular
Shields,Panel Shields,etc.are included in this catagory.
Trench box capacity refers to sidewall capacity of bottom box when boxes are
stacked.if contractor requires"closed ends"for trench box,one acceptable
method is by placing 314",or greater(or equal substitute)steel plate (width
size may varry)against spreaders of trench box.Other methods may be used
with the approval of Trench Safety Engineer.
ALTERNATE TRENCH BOX CROSS SECTION
N.T.S.
Trench Safety Plan for:CULLUM CONSTRUCTION. Pg:5 of:5
Job No: Richard 6348
Rs a d Haider P.E.
Westhaven,Phase 1 Trench Safety Engineering
(Sit 121 &Business 121) Date :09 Apr 2013 833 Rachelle
Coppell.Texas Scale :As shown Red Oak.ak,Texas 75154
Design:R.H. 18UM-9008775
2'min. 10'max
1
Spoil
H
1r
'max.
r As Required
CROSS-SECTION
N.T.S.
Trench Boxishleld side wall capacity shall be equal or greater than 490 psf
for Type"B"soil and equal or,greater than 840 Pe for Type"C"soil.If there
are any changes In soil conditions,the Trench Safety Engineer shall be
contacted for evaluation.
Any manufactured/rated trench shield system,such as Manhole Rings, Modular
Shields,Panel Shields,etc.are included in this catagory.
Trench box capacity refers to sidewall capacity of bottom box when boxes are
stacked,if contractor requires"closed ends"for trench box,<<one acceptable
method is by placing 314",or greater(or equal substitute)steel plate(width
size may varry)against spreaders of trench box.Other methods may be used
with the approval of Trench Safety Engineer.
ALTERNATE TRENCH BOX CROSS SECTION
N.T.S.
Trench Safety Plan for CULLUM CONSTRUCTION :5 of 5
WesUiaven,Phase 1 Job No;6348 "chard Haider P.E.
Date :09 !'2013 Engineering
(SN 121E Business 121) c Rachelle
Coppell.Texas Scale :As shown Red Oak, 154
Design:R.H. 1900908