Belmont-SP130924 TRENCH SAFETY PLAN
UTILITY LINES
BELMONT LANDING
(IN AND AROUND BELTLINE RD &MacARTHUR)
COPPELLO, TEXAS
FOR
CONTOUR LAND PARTNERS, LTD
Note: Soil information indicates that a stiff clay(Type"B"soil)will be found on the project
site The following applies:
H =3/4 in stiff clay(Type"B"soil or better).
H = 1 or greater in Type°C"soil
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RICHARD HALDER
6,!.747--'".6:1:1/47:
Trench Safety Plan for:CULLUM CONSTRUCTION Pg:1 of'.5
Jab No:6550 Richard Haider P.E.
Belmont Landing Date :24 Sep 2013 Trench Safety Engineering
(Deltilne St MacArthur) Scale :As sown Rd ROa a ,a Tlea x
as 75154 Copped,Texas
Design:R.H. 1.800.9009775
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(1.5 tons/sq ft)
Type"C"...less than 1,000 psf(0.5 tons/sq ft)that is not flowing or submerged.
Trench Safety Plan. for:CULLUM CONSTRUCTION Pg:2 of:5
Joh No:6500 Richard Haider P.E.
Belmont Landing Date :24 s 2013 Trench Safety Engineering
(Beltline&MacArthur) 833 Rochelle
Capped.Texas Scale 'As shown Red Oak,Texas 75154
Design:R.H. 1SQD-9009775
Note: Either benched or sloped is acceptable
2'min. 10'max.
14 Spoil
* H
. 1 :
rttax.
As Required
TYPICAL OPEN CUT CROSS SECTION
N.T.S.
t
Trench Safety Plan for:CULLUM CONSTRUCTION Pg:3of 5
Job'No:6500 Richard Haider P.E.
Belmont Landing Date :24 Sep 2013 Trench Safety Engineering
(Beltline$fdacAtthw) 833 Rachelle
Coppell,Texas Scale "Ns shown Red Oak,Texas 75154
Design:R.H. 1.800. 10.9775
Spaced 6'to 8'o.c.in unweathered limestone.
Spaced 4'o.c.in stiff clay[Type"B"soil)and weathered limestone.
Spaced 4'o.c.,in dry Type "C"soil sheeted with 3!4", 14-ply Finland
Birch,or 1-118"CDX plywood,or approved equal
'Standard'hydraulic shoring
I.1 4'min. I 6•max
Spoil
I .•
: :As per manufacturer's
j data and limitations
y... .
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-7-55 or V 5-55,
or V-3.5-55,or equal. Shores may be stacked.
GIBE Vertical Shores,model No HVS 3455 or HVS-53455,
or HVS.3.53455,or equal.Shores may be stacked.
EFFICIENCY PRODUCTION,models No.7X3455-S or 5X3455-S,
or 3.5X3455-5, or equal. Shores may be stacked.
Alsoavailable are Speed Shore'Heavy Duty'shores,which rails run in the li',12,and 16'range.
If sheeting Is desired,3/4",14-ply Finland Birch, or 1-118"CDX plywood
or equal,is acceptable.
ALTERNATE HYDRAUUC SHORING CROSS SECTION
N.TS.
Trench Safety Plan for:CULLUM CONSTRUCTION Pg:4 of:5
Job No:6580 Richard Haider P.E.
Belmont Landing pate :24 Sep 2013 Trench Safety Engineering
(Beltline 8 MacArthur} 833 Rachene
Copirell.Texas Scale :As shown Red Oak,Texas 75154
Design:R.H. 1.8t10•9009775
I '2'min.,•i 10' max
. 1 Spoil
i r. ..
rlr�a '
•
4'max.
As Required
CROSS-SECTION
N.T.S.
Trench Box/shield side wall capacity shall be equal or greater than 420 psf
for Type "B"soil and equal or greater than 600 psf for Type"'C"soil,If there
are any changes in soil 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 category.
Trench box capacity,.given above,refers to sldewall capacity of bottom box,in
Type"8"soil,when boxes are stacked.If contractor requires"closed ends"for
trench box,one accaptable method is by placing 314",or greater(or equal)
substitute)steel plate (width size may vary)against spreaders of trench box.
Other methods may be used with approval of Trench Safety Engineer.
ALTERNATE TRENCI1 BOX CROSS SECTION
N.T.S.
Trench Safety Plan for:CULLUM CONSTRUCTION Pg:5 of:5
Job No:6580 Richard flakier P.E.
Belmont Landing Date ':24 5ep2t113 Trench Safety Engineering
(Beltline &MacArthur} 833 Rachelle
Coppell.Texas Scale :As shown Red Oak,Texas 75154
Design:R.H. 1 500900-9775