HomeMy WebLinkAboutB06-0280 Temporary ShoringSP-1.
Cover Sheet
SP-2.
General Notes
SP-3.
Shoring Plan View
SP-4.
Shoring Elevation View
SP-5.
Typical Cross Section
SP-6.
Shoring Details
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_ REVISIONS
PROJECT NUMBER: 07-012
PLOT DATE: 5116/07
DRAWN BY. CBB
CHECK BY: WDL
SCALE: N/A
SPA
1.0 Ground Nail Wall and Micropile Materials
1.1 Ground nails and Micropiles - Grade 75 bare threadbar, R38 or R32 Self Drilled Anchors in
accordance with ASTM A615.
fy = 75,000 psi
1.2 Grout - Grout may be neat-cement or with sand, with Type 1/11 or I II cement in accordance with
ASTM C150. Water-cement ratio should be between 0.4 and 0.6.
f c = 3,000 psi minimum
1.3 End hardware - Nuts and washers shall be in accordance with ground nail manufacturer's
recommendations. Bearing plate shall be in accordance with ASTM A36, Grade 36.
2.8 Once the grout and shotcrete have attained 50% of their specified strengths, repeat
2.2-2.7 to the bottom of the wall.
3.0 Temporary Shoring Design Parameters
3.1
3.2
1.4 Shotcrete - Shotcrete mix shall consist of Type II cement in accordance with ASTM C150,
potablewaterand normal- weight aggregate- in accordance-With ASTM_C33._ Air-,entrainment-is-
not required. Admixtures, if used, should be non-corrosive to steel. 3.3
f c = 4,000 psi (28-day strength)
3.4
The ground nail wall has been designed in general accordance with procedures
contained in the FWHA "Manual for Design and Construction Monitoring of Soil Nail
Walls", Report Number FHWA-SA-96-069R.
The following values have been used for the design parameters:
c y quit
Material Description (deg) (psf) (pcf) (psi)
Silty Sand and Cobbles 30 100 125 20
The required allowable force for the ground nails is 1.5 kips/If.
The groundwater table was assumed to be below the shoring wall.
2.7 Shotcrete over the ground nail end hardware to attain minimum coverage requirements.
Concrete - Concrete mix shall consist of Type II cement in accordance with ASTM C150,
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potable water and normal weight aggregate in accordance with ASTM C33. Air entrainment is
3.5
Factors of safety:
C0
not required. Admixtures, if used, should be non-corrosive to steel.
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Bearing capacity - FS = 2.5
0
f c = 3,000 psi (28-day strength)
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Global - FS 1.5
1.5
Welded wire mesh shall be in accordance with ASTM A185
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Pullout - FS = 2.0
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Yield reduction factor - a = 0.55
1.6
Cap Reinforcements - Cap reinforcements shall be #4 rebar in accordance with ASTM A615.
Facing flexure factor - a = 0.67
Install per plans.
Facing punching factor - o = 0.67
fy = 60,000 psi
0
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1.7
Centralizers should be plastic and attached to the nails in accordance with the manufacturers
4.0 Special Provisions
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recommendations and should be spaced no farther apart than 10 ft with one centralizer within 3
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ft of the nail head and one within 3 ft of the nail bottom.
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4.1
The wall was designed for a maximum height of 26' with a 2:1 slope above.
2.0 Temporary Shoring Construction Sequence
4.2
At least one preproduction verification tests shall be performed on sacrificial test
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nails to verify the installation method and nail pull-out resistance in accordance with
2.1
Install Micropile system where shown on the plans.
PLOT DATE: 5116/07
FHWA-SA-96-069R.
2.2
Excavate one lift. Ground nails may be drilled and installed through a temporary stabilizing
4.3
Proof testing of the ground nails shall be performed on 5% of the nails or as
berm if necessary.
directed by the shoring design engineer. A passing verification test can be counted
towards the proof testing requirement.
2.3
Install ground nails at the approximate locations and to the lengths shown on the plans.
Ground nail locations may vary from the specified spacing by up to 6".
4.4
Shoring details may be modified by design Engineer.
2.4
Install welded wire mesh and walers as shown on the drawings.
4.5
This design is valid only for this site and is to be constructed by HTM Construction
2.5
Install shotcrete to cover welded wire mesh and walers. Give special attention to filling the void
only.
in the borehole above the grout line. Cold weather protection measures may be necessary.
4.6
The ground nail walls may be redesigned based on verification test results.
2.6
Install the ground nail end hardware while the shotcrete is still wet. Embed into the shotcrete
surface until there is no void behind the plate. Hand tighten the nut.
2.7 Shotcrete over the ground nail end hardware to attain minimum coverage requirements.
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F REVISIONS
PROJECT NUMBER:* 07-012
PLOT DATE: 5116/07
DRAWN BY: CBB
CHECK BY: WDL
SCALE: N/A
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REVISIONS
PROJECT NUMBER: 07012
PLOT DATE: 5/16/07
DRAWN BY: CBS
CHECK BY: WDL
SCALE: 1�301
SP-3
8230.00 F - ------- - - ---- SNL='16 8230.00
8220.00 i TW Sh = 5' Sv = 5'
---- - ---- ...... . ..... . ......... .... . ..... . ..... --- - ---- 8220.00
+ + + +
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.... . ..... . ... . .... . ..... . . -
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GNL= 10' GNL=lg GNL= 10' + + + +
8200.00 8200.00
. ..... . ..... . ..... . ..... . ... . ....
Sh = 6' Sv = 5' S" Sh = 6' Sv =6 iFWW
-FML 10' 4F = 25 FML = 36
BML = 20' BML = 30' 8190.00 .... . .... . ..... . ..... . ..... . ..... . ..... . ..... . ..... . ..... . ..... 8190.00
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8190.00 8190.00
EAST RAMP SHORING
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8180.00
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... . .. . ....... i .. - 8180.00
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8170.00
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DIST. 1+40 DIST. 0+90 DIST. 0+00 8210.00 - -- - ----- -------- ----- - ------ 8210.00
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DIST. 0+00 DIST. 0+52 1 1 DIST. 1+10
DIST. 0+75 DIST. 0+80
GNL 2W GNL 25' GNL 20'
8230.00 Sh=6 SV=5' Sh=V Sv=5' Sh = 5' Sv = 51 EAST RAMP SHORING
8230.00 WEST SIDE
INNER CORNER TOP OF 2:1 INNER CORNER
(MATCHLINE WEST SHORING WALL) (MATCHLINE EAST SHORING WALL)
TOP OF WALL - - 1 8220.00
8220.00 1 SLOPE
I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
8210.00 SOIL NAIL 71-1
+ + + + .... o- + T ¢_ , th --- + + + + + 8210.00
8200.00 ... . . . . . . . . . . . . . . . . . . . . . . . 41 . . . . . . . . . . . . . . . . . . . . . 8200.00
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. . . . . . . . . . . . . . . . . T . +
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8170.00 - -------- 8170.00
8160.00 8160.00
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DIST. 0+00 DIST. 0+53 DIST. 0+88 DIST. 1+15 DIST. 1+67 DIST. 2+04 DIST. 2+31
NORTH SHORING WALL
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REVISIONS
PROJECT NUMBER: 07-012
PLOT DATE: 5116107
DRAWN BY: CBS
CHECK BY. WDL
SCALE:
I F SP-4---j
2
1 max
Centralizer 3' from top and
bottom of hole. Max 10' apart. —,,
Centralizers not necessary for DSI Anchors
Hex nut and 8"x8"x1/2"
Steel Plate
. Shotcrete Facing
5" Min.
R32N DSI Hollow Bar
or equivalent
Centralizer 3' from top and
bottom of hole. Max 10' apart.
Centralizers not necessary for DSI Anchors
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--- �max
Rear Battered Micropile
R32N DSI Hollow Bar
or equivalent
4x4 W4.OxW4.0
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NORTH AND EAST WALL SHORING
2
1 max
Single Row Micropiles
R32N DSI Hollow Bar -
or equivalent
Micropile Cap
See sheet SP-6 for details
Hex nut and 8"x8"x1/2"
Steel Plate
Centralizer 3' from top and
bottom of hole. Max 19 apart.
Centralizers not necessary for DSI Anchors
12'
Shotcrete Facing
5" Min.
4x4 W4.0xW4.0 Wire
Mesh
R32N DSI Hollow Bar
or equivalent
WEST WALL SHORING - SINGLE ROW MICROPILES
R32N DSI Hollow Bar
or equivalent
Micropile Cap
See sheet SP-6 for details
Hex nut and 8"x8"x1/2"
Steel Plate
Shotcrete Facing
5" Min.
26'
4x4 W4.0xW4.0 Wire
Front Vertical Micropile
R38N DSI Hollow Bar
or equivalent
WEST WALL SHORING - DOUBLE ROW MICROPILES
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REVISIONS
PROJECT NUMBER: 07-012
PLOT DATE: 6/16/07
DRAWN BY: CBS
CHECK BY: WDL
SCALE: NTS
SP-5
Bearing
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.................... -- ................... ---
Welded wire fabric reinforcing
4"x4" - W4.0 x W4.0
min. 2 grids I YPILa:11 Shotcrete Reinforcement
NTS
4"x4" W4.0xW4.0 Mesh
Shotcrete
Hex Nut -
8"x8"xl /2" Steel Plate)
Y 2" min.
R32 Self Drilled Anchors
or equivalent
Ground Nail Detail
NTS
Hole 0
Micropile Cap Detail
KITS
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—1 diameter bar diameter . I, -
Bearing Plate Detail
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No. 4 Reber Continuous
3 each
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min. 2 grids I YPILa:11 Shotcrete Reinforcement
NTS
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Shotcrete
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R32 Self Drilled Anchors
or equivalent
Ground Nail Detail
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KITS
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NTS
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REVISIONS
PROJECT NUMBER* 07-D12
PLOT DATE: 5/16107
DRAWN BY: CBB
CHECK BY: WDL
SCALE: NTS
SP-6