HomeMy WebLinkAboutMSE Wall DrawingsVail Plaza Hotel East
Vail, Colorado
Temporary MSE Wall
1. Cover Sheet
2. General Notes - MSE Wall
3. Typical MSE Wall Cross Section
4. MSE Details
Yeh and Associates, Inc.
Consulting Geotechnical Engineers
5700 E. Evans Avenue Denver, CO 80222
Phone: (303) 781 -9590 Fax: (303) 781 -9583
:0I iCeV1S10H Designed For:
Revision/Issue Checked by B & Y Drilling Services, Inc.
Project Number:
25 -048
Drawn by: BRF Date:
Checked by: RDJ April 20, 2005
ss.
1 N-11 Ilk
Cover
Project: Figure Number:
Vail Plaza Hotel East 1 of 4
GENERAL NOTES, MSE WALLS:
1.0 MSE Wall Materials
1.1 Backfill soils
1.1 .1 Reinforced zo a backfill shall consist of -site material and shall meet the following gradation:
Sieve Percent Passing
3" 100
No. 200 0 -25
1.1.2 The part of the backfill soil passing the No. 200 sieve shall have a liquid limit not a x ceeding 35 percent and o plasticity
index not exceeding 6 precent when tested in accordance with PASHTO T89 and T90,respectively.
1.2 Geofabric reinforcement shall be Amoco 2044 or equivalent as shown in drawing.
1.3 Facing blocks shall be concrete masonry units (cmu).
2.0 MSE Wall Construction Sequence
2.1 The foundation soils shall be cleaned of all deleterious materials (organics, boulders, etc.). Any deleterious materials shall
be removed and replaced with structural fill compacted to 95% of maximum density ( AASHTO T99) within 2% of optimum
moisture content.
2.2 Reinforced zoma and retained z on. backfill shall be placed in lifts no thicker than 8" for heavy compaction equipment and
in lifts no thicker than 4" for hand - operated compaction equipment. Backfill shall be placed in horizontal layers and
compacted against horizontal surfaces. Only hand - operated compaction equipment shall be used within 3' of the back of
the facing blocks. Backfill should be placed and compacted sequentially from the facing blocks to the back of the
reinforcements to aid in tensioning. -
2.3 Reinforced zone and retained zone backfill shall be compacted to at least 95% of maximum dry density as determined
by the standard Proctor ( AASHTO T -99) at a moisture content within t2% of optimum.
2.4 Place reinforcements as shown on the drawings. All reinforcement layers a e 100% coverage. Apply n-imal tension to
reinforcement so no wrinkles are formed before receiving the next soil lift.
2.5 Reinforcement length as shown on the drawings is measured from the front of the facing blocks.
2.6 Track vehicles shall not be operated directly on the geofabric. A minimum of 6" of backfill is required to operate
track vehicles over reinforcements and turning shall be minimized to avoid displacing the geofabric. Rubber -tired vehicles
may drive slowly directly on the reinforcements if necessary.
2.7 Excess geofabric reinforcement may be trimmed from the blo6k face.
2.8 The contractor shall cut blocks as needed to flit pipe penetrations through wall. Install geofabric behind gaps to retain
backfill soil.
��. Yeh and Associates, Inc.
Consulting Geotechnical Engineers
5700 E. Evans Avenue Denver, CO 80222
Phone: (303) 781 -9590 Fax: (303) 781 -9583
3.0 MSE Wall Design Parameters
3.1 The MSE walls have been designed in general accordance with procedures contained in the NCMA "Design Manual for
Segmental Retaining Walls ", Second Edition.
3.2 The following values have been assumed for soil /rock design parameters:
4 a Y
(deg) (pef) (pcf)
Natural soils 30 0 125
An experienced geotechnical engineer should verify the above design parameters during construction.
3.3 No groundwater table was assumed.
3.4 Factors of safety
3.4.1 Global - FS =1.5
3.4.2 External
Bearing capacity - FS =2.5
Overturning - Eccentricity< =8/6, FS =1.5
Sliding - FS =1.5
3.4.3 Internal
Pullout - FS =1.5
Tensile overstress - FS =1.5
Geogrid strength reduction factor - k =0.20
3.5 The maximum design life for the MSE wall is six months
4.0 General Requirements and Notes
4.1 Wall geometry used in design was based on information supplied by D &Y- Drilling Services; Inc.provided to
Yeh and Associates.
4.2 This design is valid only for B &Y Drilling Services, Inc. at the subject site.
4.3 We were informed by Mr. Baxter with Schnobel Foundation Company (Phone conversation 4/11/05) that the existing
soldier pile and logging wall was designed for the additional wall surcharge.
4 -4 Yeh and Associates is not responsible for maintaining slope stability during excavation and MSE wall construction.
4.5 The contractor is responsible for field locating all nearby utilities, constructing and maintaining a safe temporary slope,
and temporary excavation support if needed. Conflicting utilities may require redesign at Yen and Associates' discretion.
4.6 Yeh and Associates is not responsible for construction site safety, quality control, quality assurance, changed 'rise.
or problems resulting from improper construction techniques. ��10
4.7 Yeh and Associates is not responsible for MSE wall layout.
Designed For:
B & Y Drilling Services, Inc.
Project Number:
25 -048
Drawn by: Date:
BRF Project:
Checked by: RD J April 20, 2005
General Notes - MSE Wall
Figure Number:
Vail Plaza Hotel East 2 of4
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GEOTEKTU.E LAYOUT (PLAN VIEWI
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M11H PAVE TECH — t i 0U.£ ACIIECSNE,
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CAP BLOCK LAYOUT
12 Y_ eh and Associates, Inc.
Consulting Geotechnical Engineers
5700 E. Evans Avenue Denver, CO 80222
Phone: (303) 781 -9590 Fax: (303) 781 -9583
CNU
LE�nYIC PAD •�fi'�
TYPI I VE NG P D STEP DRi'Aii.
(IF CONCRETE LEVELING PAD USED)
cNu
–T 6
—33' —� GlNyit
LbNCREIF
TYPICAL LEVELING PAD DETAIL
(GRAVEL OR CONCRETE)
I -1 I
to t�
rACE OF BLOLY(
Ili
REINFORCEMENT CONNECTION DETAIL,
171'/4"
1
7 -3/4"
J
15 -5/8"
STANDARD BLOCK DETAIL
•HORIZONTAL BLOCK DIMENSIONS MAY VARY WITH THE APPROVAL OF THE ENGDM.
THE VERTICAL BLOCK DIMENSION SHALL BE BETEEEN 7.5" AND 0.5 ".
,et Kevislo 1 I Designed For:
RevisimJlssue Checked by B & Y Drilling Services, Inc.
Project Number:
25 -048
Draam by: BRF Date:
Checked by: RD J April 20, 2005
MSE Details
Project: Figure Number:
Vail Plaza Hotel Past 4 of 4