17259 GES Report - Fedje Properties.pdfGEOrrECH
CONSULTANTS, INC.
Fedje Properties LLC
11404 — 2391h Place Southwest
Woodway, WA 98020
Attn: Linda Ferkingstad
via email: namron@comcast.net
Subject: Transmittal Letter — Geotechnical Engineering Study
Proposed Three -Residence Development
157XX — 7211 Avenue Southwest
Edmonds, Washington
Dear Ms. Ferkingstad:
2401 loth Ave E
Seattle, Washington 98102
(425) 747-5618 FAX (425) 747-8561
March 30, 2017
JN 17259
We are pleased to present this geotechnical engineering report for the proposed residential project
to be constructed in Edmonds, Washington. The scope of our services consisted of exploring site
surface and subsurface conditions, and then developing this report to provide recommendations for
general earthwork and design criteria for foundations and retaining walls. This work was authorized
by your acceptance of our proposal, P-9761, dated May 2, 2017.
The attached report contains a discussion of the study and our recommendations. Please contact
us if there are any questions regarding this report, or for further assistance during the design and
construction phases of this project.
Respectfully submitted,
GEOTECH CONSULTANTS, INC.
al 1, 14 Er/ in
D. Robert Ward, P.E.
Principal
GEOTECH CONSULTANTS. INC.
GEOTECHNICAL ENGINEERING STUDY
Proposed Three Residence Development
157XX - 72nd Avenue West
Edmonds, Washington
This report presents the findings and recommendations of our geotechnical engineering study for
the site of the proposed residential development to be located Edmonds.
Based on a preliminary site plan for the project we received and a topography map by Insight
engineering dated April 25, 2017, we understand that three residences are proposed in the central
portion of the site. A common driveway will be located on the northern edge of site, while the
southern edge will be left undeveloped. We understand that the stormwater for the project will be
connected to a system that is to the south of the site. Because the central portion of the site is
somewhat of a ridge (as described more in detail in the next section of this report), excavations of
up to about 10 feet are proposed in much of the residence locations. These residences will all have
basements that daylight to the south of a south -facing slope. Cuts and fills of approximately 10 feet
are proposed for the driveway, and thus several retaining walls will be needed for the driveway.
If the scope of the project changes from what we have described above, we should be provided
with revised plans in order to determine if modifications to the recommendations and conclusions of
this report are warranted.
SITE CONDITIONS
SURFACE
The Vicinity Map, Plate 1, illustrates the general location of the site in Edmonds. The property is
rectangular, with approximately 170 feet of frontage on its western side along the right-of-way of
72nd Avenue West (which is mostly undeveloped) and a length of approximately 320 feet. The
property is undeveloped and forested; several large evergreen and deciduous trees are located on
the property. There is a forest underbrush throughout much of the property, although a less native
and brushy underbrush is located on the north -central portion of the site.
There is a steep slope, greater than 40 percent, located on the western/southwestern portion of the
site and also located within much of the street right-of-way. This slope is up to approximately 35
feet tall based on the obtained topography map and rises to the east/northeast, and it appears to
be inclined at about 50 percent at its steepest portion. This steep slope also continues through to
the east -central portion of the site where it rises to the north over a height of about 25 feet. There is
a "ridge that extends in an approximate east -west direction in the central and northern portions of
the site. The site slopes mostly downward to the north and south of the ridge, although also to the
west near the street right-of-way. With the exception of the steep slopes noted above and this
somewhat level ridge, the remainder of the site is mostly moderately inclined. We did not observe
indications of instability of the slopes on the site.
There is no adjacent development to the south. However, two house are adjacent to and below the
northern side of the property.
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SUBSURFACE
The subsurface conditions were explored by excavating eight test pits at the approximate locations
shown on the Site Exploration Plan, Plate 2. Our exploration program was based on the proposed
construction, anticipated subsurface conditions and those encountered during exploration, and the
scope of work outlined in our proposal.
The test pits were excavated on May 10, 2017 with a large trackhoe. A geotechnical engineer from
our staff observed the excavation process, logged the test pits, and obtained representative
samples of the soil encountered. "Grab" samples of selected subsurface soil were collected from
the backhoe bucket. The Test Pit Logs are attached to this report as Plates 3 through 6
Soil Conditions
The predominant soil revealed in the test pits, although not revealed in the central portion of
the site is a native, gravelly silty sand soil known geologically as glacial till (also known
commonly as "hardpan". Below a surface layer of topsoil and forest duff, this silty sand soil
was relatively loose and weathered to depths of about 2 to 4 feet before becoming dense to
very dense (mostly very dense); this is a common depth in the Puget Sound region for
glacial till soil. In the central portion of the site, the native soil consisted of slightly silty sand.
Below the topsoil and forest duff, this soil was relatively loose and weathered to a depth of
approximately 4 feet, then became dense. The test pits were excavated to a maximum
explored depth of 9 feet.
Groundwater Conditions
No groundwater seepage was observed in the test pits, although they were left open for
only a short time period. Therefore, the lack of seepage may not indicate the static
groundwater level.
It should be noted that groundwater levels vary seasonally with rainfall and other factors,
with higher levels normally occurring in the winter and early spring months. It is possible that
some perched groundwater could be found between the looser near -surface soil and the
underlying dense glacial till during this period.
The stratification lines on the logs represent the approximate boundaries between soil types at the
exploration locations. The actual transition between soil types may be gradual, and subsurface
conditions can vary between exploration locations. The logs provide specific subsurface information
only at the locations tested. The relative densities and moisture descriptions indicated on the test
pit logs are interpretive descriptions based on the conditions observed during excavation.
The compaction of test pit backfill was not in the scope of our services. Loose soil will therefore be
found in the area of the test pits. If this presents a problem, the backfill will need to be removed and
replaced with structural fill during construction.
SEISMIC CONSIDERATIONS
In accordance with the International Building Code (IBC), the site soil profile within 100 feet of the
ground surface is best represented by Site Class C (Very Dense Soil). The site soils have a low
potential for seismic liquefaction because of their dense nature and the absence of near -surface
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groundwater. This statement regarding liquefaction includes the knowledge of the determined
peak ground acceleration noted below.
As noted in the USGS website, the mapped spectral acceleration value for a 0.2 second (Ss) and
1.0 second period (Si) equals 1.2g and 0.4g, respectively. The IBC states that a site -specific
seismic study need not be performed provided that the peak ground acceleration be equal to
Sps/2.5, where Sps is determined in ASCE 7. It is noted that Sos is equal to 2/3SMs. SMs equals IF,,
times Ss, where Fa is determined in Table 11.4-1. For our site, Fa = 1.0. Thus, the calculated peak
ground acceleration that we utilized for the seismic -related parameters of this report equals 0.32g.
SLOPE STABILITYANALYSIS
The steepest portion of the site is on the western end where the slope is about 35 feet tall and
inclined at about 4 feet; thus this is the most critical slope on the property. We developed a cross-
section of the ground surface at this location using the provided topographic site survey and also
topography information from Edmonds GIS mapping. We have conducted a slope stability analysis
at this cross-section, as shown on Plate 2, using the computer program SLOPE/W.
Soil parameters were needed for the analysis, with most significant being the defining strength
parameters of the site soils, including an angle of internal friction (aif) and cohesion. Based on our
experience, the upper, loose/weathered soil has an aif of 32 degrees and no cohesion, while the
dense to very dense glacial till and sand has much higher parameters of 41 degrees and 100 psf
cohesion. Using the soil parameters determined as noted above, the stability of a regraded slope
was analyzed for both the future static and dynamic loading conditions. For the dynamic analysis, a
peak ground coefficient of acceleration of 0.20g was used; his coefficient is slightly higher than the
normal coefficient of half of the determined peak ground acceleration. In the existing slope
configuration, there is a potential of soil movement of the upper, loose/weathered soil; this is typical
in the Puget Sound area for steep slopes. However, because all new structures are going to be
founded on the dense to very dense site soils (discussed much more in detail in subsequent
sections of this report), a stability analysis of future development was needed where the potential
for slope movement is through the dense to very dense soil that the structures will be founded on.
The slope stability analyses indicated factors of safety in excess of 1.5 for static conditions and 1.2
for seismic conditions. The output of the stability analyses and the slope configuration is attached
in the Appendix of this report.
CONCLUSIONS AND RECOMMENDATIONS
GENERAL
THIS SECTION CONTAINS A SUMMARY OF OUR STUDY AND FINDINGS FOR THE PURPOSES OF A
GENERAL OVERVIEW ONLY. MORE SPECIFIC RECOMMENDATIONS AND CONCLUSIONS ARE
CONTAINED IN THE REMAINDER OF THIS REPORT. ANY PARTY RELYING ON THIS REPORT SHOULD
READ THE ENTIRE DOCUMENT.
The test pits conducted for this study encountered native, dense to very dense, glacial till and sand
soils at depths of approximately 2 to 4 feet. These dense to very dense soils are very competent for
supporting residential structure load, including those relative to houses and retaining walls, and
thus conventional footings can be used as foundation of new structures. These soils also have high
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shear strength against structural settlement and slope instability. Some overexcavation may be
needed in some areas to reach these competent native soils.
Discussion of Edmonds Slope Code.
Based on The Edmonds Community Development Code (ECDC), Chapter 23.80 (Geologically
Hazardous Areas), the steep western slope would be classified as a Landslide Hazard Area
because it is steeper than 40 percent slope, and greater than 10 foot vertical relief. Based on
ECDC 12.80.070, the Minimum Building Setback from a Landslide Hazard Areas shall be the
distance required to ensure the proposed structure will not be at risk from landslides for the life
of the structure, considered to be 120 years, and will not cause an increased risk of landslides
taking place on or off the site. The code further states that the setback shall be determined by
the director consistent with recommendations provided in the geotechnical report to eliminate or
minimize the risk of property damage, death, or injury resulting from landslides caused in whole
or part by the development, based upon review of and concurrence with a critical areas report
prepared by a qualified professional. In addition, ECDC 23.80.070 notes that a stability analysis
that needs to have static and dynamic safety factors of 1.5 and 1.2; as is noted earlier, our
stability analyses indicate that, safety factors in excess of 1.5 and 1.2 are achieved in the dense
to very dense soils where the steepest site slopes exist. Therefore, because new structures will
be founded on the dense to very dense soil, it is our professional opinion that the structures can
be placed on steep slope and no Minimum Building Setback is needed.
Per code, it appears that the residence locations may be an "alteration" per Edmonds Code.
Based on ECDC 23.80.060.A, an alteration to a Landslide Hazard Area and associated buffer
may occur for activities that:
1. Will not increase the threat of the geologic hazard to adjacent properties beyond
predevelopment conditions;
2. Will not adversely affect other critical areas;
3. Are designed so that the hazard to the project is eliminated or mitigated to a level equal
to or less that predevelopment conditions; and
4. Are certified as safe as designed and under anticipated conditions by a qualified
engineer licensed in the State of Washington.
In addition, ECDC 23.80.070.A.3 indicates that alterations of a Landslide Hazard Area may
occur for activities for which a hazards analysis is submitted and certifies that:
a) The development will not increase surface water discharge or sedimentation to adjacent
properties beyond predevelopment conditions;
b) The development will not decrease slope stability on adjacent properties; and
c) Such alterations will not adversely impact other critical areas.
As has been noted earlier in our study, residences founded on the dense to very dense soil
have adequate static and dynamic safety factors. In addition, all stormwater from the project
will not be placed on site slopes. Therefore, it is our professional opinion that this proposed
development meets the seven standards noted above in both ECDC 23.80.060 and 070
provided the recommendations of this report are followed. We believe that the alteration is
therefore suitable because: 1) it will not increase the potential for landslide to the adjacent,
downslope properties, 2) it will not affect other critical areas, 3) the hazard is mitigated to be
equal to predevelopment standards, 4) it is safe in our professional opinion, a) the alteration will
not increase surface water discharge or sedimentation to adjacent properties, b) the alteration
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will not decrease slope stability, and c) the alteration will not adversely affect adjacent critical
areas.
A significant geotechnical consideration for development of this site is the moisture sensitivity, and
overly moist to wet condition of the silty soils. Based on our observations, and the results of our
laboratory tests, the moisture contents of the on -site soils are significantly above the optimum
moisture content necessary for the required structural fill compaction. These fine-grained, silty
soils are sensitive to moisture, which makes them impossible to adequately compact when they
have moisture contents even 2 to 3 percent above their optimum moisture content. The reuse of
these soils as structural fill to level the site will only be successful during hot, dry weather. Aeration
of each loose lift of soil will be required to dry it before the lift is compacted. Alternatively, the soil
could be chemically dried by adding lime, kiln dust, or cement, provided this is allowed by
responsible building department. Regardless of the method of drying, the earthwork process will
be slowed dramatically. The earthwork contractor must be prepared to rework areas that don't
achieve proper compaction due to high moisture content. Utility trench backfill in structural areas,
such as pavements, must also be dried before it can be adequately compacted. Improper
compaction of backfill in utility trenches and around control structures is a common reason for
pavement distress and failures. Imported granular fill will be needed wherever it is not possible to
dry the on -site soils sufficiently before compaction.
The drainage and/or waterproofing recommendations presented in this report are intended only to
prevent active seepage from flowing through concrete walls or slabs. Even in the absence of active
seepage into and beneath structures, water vapor can migrate through walls, slabs, and floors from
the surrounding soil, and can even be transmitted from slabs and foundation walls due to the
concrete curing process. Water vapor also results from occupant uses, such as cooking and
bathing. Excessive water vapor trapped within structures can result in a variety of undesirable
conditions, including, but not limited to, moisture problems with flooring systems, excessively moist
air within occupied areas, and the growth of molds, fungi, and other biological organisms that may
be harmful to the health of the occupants. The designer or architect must consider the potential
vapor sources and likely occupant uses, and provide sufficient ventilation, either passive or
mechanical, to prevent a build up of excessive water vapor within the planned structure.
Geotech Consultants, Inc. should be allowed to review the final development plans to verify that the
recommendations presented in this report are adequately addressed in the design. Such a plan
review would be additional work beyond the current scope of work for this study, and it may include
revisions to our recommendations to accommodate site, development, and geotechnical
constraints that become more evident during the review process.
We recommend including this report, in its entirety, in the project contract documents. This report
should also be provided to any future property owners so they will be aware of our findings and
recommendations.
CONVENTIONAL FOUNDATIONS
The proposed structure can be supported on conventional continuous and spread footings bearing
on undisturbed, dense to very dense, native glacial till and sand soil. We recommend that
continuous and individual spread footings have minimum widths of 16 and 24 inches, respectively.
Exterior footings should also be bottomed at least 18 inches below the lowest adjacent finish
ground surface for protection against frost and erosion. The local building codes should be
reviewed to determine if different footing widths or embedment depths are required. Footing
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subgrades must be cleaned of loose or disturbed soil prior to pouring concrete. Depending upon
site and equipment constraints, this may require removing the disturbed soil by hand.
An allowable bearing pressure of 3,000 pounds per square foot (psf) is appropriate for footings
supported on competent native sand soil. A one-third increase in this design bearing pressure may
be used when considering short-term wind or seismic loads. For the above design criteria, it is
anticipated that the total post -construction settlement of footings founded on competent native soil
will be about one-half inch, with differential settlements on the order of one-half inch in a distance
of 50 feet along a continuous footing with a uniform load.
Lateral loads due to wind or seismic forces may be resisted by friction between the foundation and
the bearing soil, or by passive earth pressure acting on the vertical, embedded portions of the
foundation. For the latter condition, the foundation must be either poured directly against relatively
level, undisturbed soil or be surrounded by level, well -compacted fill. We recommend using the
following ultimate values for the foundation's resistance to lateral loading:
PARAMETER ULTLNIATE
VALUE
Coefficient of Friction 0.50
Passive Earth Pressure 300 pcf
Where: pcf is Pounds per Cubic Foot, and Passive Earth
Pressure is computed using the Equivalent Fluid Density.
If the ground in front of a foundation is loose or sloping, the passive earth pressure given above will
not be appropriate. We recommend maintaining a safety factor of at least 1.5 for the foundation's
resistance to lateral loading, when using the above ultimate values.
FOUNDATION AND RETAINING WALLS
Retaining walls backfilled on only one side should be designed to resist the lateral earth pressures
imposed by the soil they retain. The following recommended parameters are for walls that restrain
level backfill:
PARAMETER
Active Earth Pressure *
VALUE
35 pcf
Passive Earth Pressure
300 pcf
Coefficient of Friction
0.40
Soil Unit Weight
135 pcf
Where: pcf is Pounds per Cubic Foot, and Active and Passive
Earth Pressures are computed using the Equivalent Fluid
Pressures.
* For a restrained wall that cannot deflect at least 0.002 times its
height, a uniform lateral pressure equal to 10 psf times the height
of the wall should be added to the above active equivalent fluid
pressure.
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The design values given above do not include the effects of any hydrostatic pressures behind the
walls and assume that no surcharges, such as those caused by slopes, vehicles, or adjacent
foundations will be exerted on the walls. If these conditions exist, those pressures should be added
to the above lateral soil pressures. Where sloping backfill is desired behind the walls, we will need
to be given the wall dimensions and the slope of the backfill in order to provide the appropriate
design earth pressures. The surcharge due to traffic loads behind a wall can typically be accounted
for by adding a uniform pressure equal to 2 feet multiplied by the above active fluid density. Heavy
construction equipment should not be operated behind retaining and foundation walls within a
distance equal to the height of a wall, unless the walls are designed for the additional lateral
pressures resulting from the equipment.
The values given above are to be used to design only permanent foundation and retaining walls
that are to be backfilled, such as conventional walls constructed of reinforced concrete or masonry.
It is not appropriate to use the above earth pressures and soil unit weight to back -calculate soil
strength parameters for design of other types of retaining walls, such as soldier pile, reinforced
earth, modular or soil nail walls. We can assist with design of these types of walls, if desired. The
values for friction and passive resistance are ultimate values and do not include a safety factor.
Restrained wall soil parameters should be utilized for a distance of 1.5 times the wall height from
corners or bends in the walls. This is intended to reduce the amount of cracking that can occur
where a wall is restrained by a corner.
Wall Pressures Due to Seismic Forces
The surcharge wall loads that could be imposed by the design earthquake can be modeled
by adding a uniform lateral pressure to the above -recommended active pressure. The
recommended surcharge pressure is 8H pounds per square foot (psf), where H is the
design retention height of the wall. Using this increased pressure, the safety factor against
sliding and overturning can be reduced to 1.2 for the seismic analysis.
Retainin_p Wall Backfill and Waterproofin_p
Backfill placed behind retaining or foundation walls should be coarse, free -draining
structural fill containing no organics. This backfill should contain no more than 5 percent silt
or clay particles and have no gravel greater than 4 inches in diameter. The percentage of
particles passing the No. 4 sieve should be between 25 and 70 percent. The later section
entitled Drainage Considerations should also be reviewed for recommendations related to
subsurface drainage behind foundation and retaining walls.
The purpose of these backfill requirements is to ensure that the design criteria for a
retaining wall are not exceeded because of a build-up of hydrostatic pressure behind the
wall. Also, subsurface drainage systems are not intended to handle large volumes of water
from surface runoff. The top 12 to 18 inches of the backfill should consist of a compacted,
relatively impermeable soil or topsoil, or the surface should be paved. The ground surface
must also slope away from backfilled walls to reduce the potential for surface water to
percolate into the backfill. Water percolating through pervious surfaces (pavers, gravel,
permeable pavement, etc.) must also be prevented from flowing toward walls or into the
backfill zone. The compacted subgrade below pervious surfaces and any associated
drainage layer should therefore be sloped away. Alternatively, a membrane and subsurface
collection system could be provided below a pervious surface.
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It is critical that the wall backfill be placed in lifts and be properly compacted, in order for the
above -recommended design earth pressures to be appropriate. The wall design criteria
assume that the backfill will be well -compacted in lifts no thicker than 12 inches. The
compaction of backfill near the walls should be accomplished with hand -operated
equipment to prevent the walls from being overloaded by the higher soil forces that occur
during compaction. The section entitled General Earthwork and Structural Fill contains
additional recommendations regarding the placement and compaction of structural fill
behind retaining and foundation walls.
The above recommendations are not intended to waterproof below -grade walls, or to
prevent the formation of mold, mildew or fungi in interior spaces. Over time, the
performance of subsurface drainage systems can degrade, subsurface groundwater flow
patterns can change, and utilities can break or develop leaks. Therefore, waterproofing
should be provided where future seepage through the walls is not acceptable. This typically
includes limiting cold -joints and wall penetrations, and using bentonite panels or
membranes on the outside of the walls. There are a variety of different waterproofing
materials and systems, which should be installed by an experienced contractor familiar with
the anticipated construction and subsurface conditions. Applying a thin coat of asphalt
emulsion to the outside face of a wall is not considered waterproofing, and will only help to
reduce moisture generated from water vapor or capillary action from seeping through the
concrete. As with any project, adequate ventilation of basement and crawl space areas is
important to prevent a build up of water vapor that is commonly transmitted through
concrete walls from the surrounding soil, even when seepage is not present. This is
appropriate even when waterproofing is applied to the outside of foundation and retaining
walls. We recommend that you contact an experienced envelope consultant if detailed
recommendations or specifications related to waterproofing design, or minimizing the
potential for infestations of mold and mildew are desired.
The General, Slabs -On -Grade, and Drainage Considerations sections should be
reviewed for additional recommendations related to the control of groundwater and excess
water vapor for the anticipated construction.
SLABS -ON -GRADE
The building floors can be constructed as slabs -on -grade atop non -organic, firm native soil or on
structural fill. The subgrade soil must be in a firm, non -yielding condition at the time of slab
construction or underslab fill placement. Any soft areas encountered should be excavated and
replaced with select, imported structural fill.
Even where the exposed soils appear dry, water vapor will tend to naturally migrate upward through
the soil to the new constructed space above it. This can affect moisture -sensitive flooring, cause
imperfections or damage to the slab, or simply allow excessive water vapor into the space above
the slab. All interior slabs -on -grade should be underlain by a capillary break drainage layer
consisting of a minimum 4-inch thickness of clean gravel or crushed rock that has a fines content
(percent passing the No. 200 sieve) of less than 3 percent and a sand content (percent passing the
No. 4 sieve) of no more than 10 percent. Pea gravel or crushed rock are typically used for this
layer.
As noted by the American Concrete Institute (ACI) in the Guides for Concrete Floor and Slab
Structures, proper moisture protection is desirable immediately below any on -grade slab that will be
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covered by tile, wood, carpet, impermeable floor coverings, or any moisture -sensitive equipment or
products. ACI also notes that vapor retarders such as 6-mil plastic sheeting have been used in the
past, but are now recommending a minimum 10-mil thickness for better durability and long term
performance. A vapor retarder is defined as a material with a permeance of less than 0.3 perms, as
determined by ASTM E 96. It is possible that concrete admixtures may meet this specification,
although the manufacturers of the admixtures should be consulted. Where vapor retarders are
used under slabs, their edges should overlap by at least 6 inches and be sealed with adhesive
tape. The sheeting should extend to the foundation walls for maximum vapor protection. If no
potential for vapor passage through the slab is desired, a vapor barrier should be used. A vapor
barrier, as defined by ACI, is a product with a water transmission rate of 0.01 perms when tested in
accordance with ASTM E 96. Reinforced membranes having sealed overlaps can meet this
requirement.
In the recent past, ACI (Section 4.1.5) recommended that a minimum of 4 inches of well -graded
compactable granular material, such as a 5/8-inch-minus crushed rock pavement base, be placed
over the vapor retarder or barrier for their protection, and as a "blotter" to aid in the curing of the
concrete slab. Sand was not recommended by ACI for this purpose. However, the use of material
over the vapor retarder is controversial as noted in current ACI literature because of the potential
that the protection/blotter material can become wet between the time of its placement and the
installation of the slab. If the material is wet prior to slab placement, which is always possible in the
Puget Sound area, it could cause vapor transmission to occur up through the slab in the future,
essentially destroying the purpose of the vapor barrier/retarder. Therefore, if there is a potential
that the protection/blotter material will become wet before the slab is installed, ACI now
recommends that no protection/blotter material be used. However, ACI then recommends that,
because there is a potential for slab curl due to the loss of the blotter material, joint spacing in the
slab be reduced, a low shrinkage concrete mixture be used, and 'other measures" (steel
reinforcing, etc.) be used. ASTM E-1643-98 "Standard Practice for Installation of Water Vapor
Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs" generally agrees with
the recent ACI literature.
We recommend that the contractor, the project materials engineer, and the owner discuss these
issues and review recent ACI literature and ASTM E-1643 for installation guidelines and guidance
on the use of the protection/blotter material.
The General, Permanent Foundation and Retaining Walls, and Drainage Considerations
sections should be reviewed for additional recommendations related to the control of groundwater
and excess water vapor for the anticipated construction.
EXCAVATIONS AND SLOPES
No excavated slopes are anticipated other than for utility trenches.)) Excavation slopes should not
exceed the limits specified in local, state, and national government safety regulations. Temporary
cuts to a depth of about 4 feet may be attempted vertically in unsaturated soil, if there are no
indications of slope instability. However, vertical cuts should not be made near property boundaries,
or existing utilities and structures. Based upon Washington Administrative Code (WAC) 296, Part
N, the soil at the subject site would generally be classified as Type A. Therefore, temporary cut
slopes greater than 4 feet in height should not be excavated at an inclination steeper than 0.75:1
(Horizontal:Vertical), extending continuously between the top and the bottom of a cut.
The above -recommended temporary slope inclination is based on the conditions exposed in our
explorations, and on what has been successful at other sites with similar soil conditions. It is
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possible that variations in soil and groundwater conditions will require modifications to the
inclination at which temporary slopes can stand. Temporary cuts are those that will remain
unsupported for a relatively short duration to allow for the construction of foundations, retaining
walls, or utilities. Temporary cut slopes should be protected with plastic sheeting during wet
weather. It is also important that surface runoff be directed away from the top of temporary slope
cuts. Cut slopes should also be backfilled or retained as soon as possible to reduce the potential
for instability. Please note that loose soil can cave suddenly and without warning. Excavation,
foundation, and utility contractors should be made especially aware of this potential danger. These
recommendations may need to be modified if the area near the potential cuts has been disturbed in
the past by utility installation, or if settlement -sensitive utilities are located nearby.
All permanent cuts into native soil should be inclined no steeper than 2:1 (H:V). In addition,
compacted fill slopes should not be constructed with an inclination greater than 2:1 (H:V). To
reduce the potential for shallow sloughing, fill must be compacted to the face of these slopes. This
can be accomplished by overbuilding the compacted fill and then trimming it back to its final
inclination. Adequate compaction of the slope face is important for long-term stability and is
necessary to prevent excessive settlement of patios, slabs, foundations, or other improvements
that may be placed near the edge of the slope.
Water should not be allowed to flow uncontrolled over the top of any temporary or permanent
slope. All permanently exposed slopes should be seeded with an appropriate species of vegetation
to reduce erosion and improve the stability of the surficial layer of soil. Topsoil is often placed on
regraded slopes to promote growth of vegetation. Proper preparation of the regraded surface, and
use of appropriate topsoil is necessary to prevent the topsoil from sliding off the slope. This is
most likely to occur following extended wet weather if a silty topsoil is used. On steeper slopes, it
may be necessary to "track walk" the slope or cut small grooves across the slope prior to placing
the topsoil.
Any disturbance to the existing slope outside of the building limits may reduce the stability of the
slope. Damage to the existing vegetation and ground should be minimized, and any disturbed
areas should be revegetated as soon as possible. Soil from the excavation should not be loosely
placed on the slope.
DRAINAGE CONSIDERATIONS
Footing drains should be used where: (1) Crawl spaces or basements will be below a structure; (2)
A slab is below the outside grade; or, (3) The outside grade does not slope downward from a
building. Drains should also be placed at the base of all earth -retaining walls. These drains should
be surrounded by at least 6 inches of 1-inch-minus, washed rock that is encircled with non -woven,
geotextile filter fabric (Mirafi 140N, Supac 4NP, or similar material). At its highest point, a
perforated pipe invert should be at least 6 inches below the bottom of a slab floor or the level of a
crawl space. The discharge pipe for subsurface drains should be sloped for flow to the outlet point.
Roof and surface water drains must not discharge into the foundation drain system.
GEOTECH CONSULTANTS, INC.
Fedje Properties LLC JN 17259
May 30, 2017 Page 11
As a minimum, a vapor retarder, as defined in the Slabs -On -Grade section, should be provided in
any crawl space area to limit the transmission of water vapor from the underlying soils. Crawl space
grades are sometimes left near the elevation of the bottom of the footings. As a result, an outlet
drain is recommended for all crawl spaces to prevent an accumulation of any water that may
bypass the footing drains. Providing even a few inches of free draining gravel underneath the vapor
retarder limits the potential for seepage to build up on top of the vapor retarder.
No groundwater was observed during our field work. However, if seepage is encountered in an
excavation, it should be drained from the site by directing it through drainage ditches, perforated
pipe, or French drains, or by pumping it from sumps interconnected by shallow connector trenches
at the bottom of the excavation.
The excavation and site should be graded so that surface water is directed off the site and away
from the tops of slopes. Water should not be allowed to stand in any area where foundations,
slabs, or pavements are to be constructed. Final site grading in areas adjacent to buildings should
slope away at least 2 percent, except where the area is paved. Surface drains should be provided
where necessary to prevent ponding of water behind foundation or retaining walls. A discussion of
grading and drainage related to pervious surfaces near walls and structures is contained in the
Foundation and Retaining Walls section Water from roof, storm water, and foundation drains
should not be discharged onto slopes; it should be tightlined to a suitable outfall located away from
any slopes.
GENERAL EARTHWORK AND STRUCTURAL FILL
All building and pavement areas should be stripped of surface vegetation, topsoil, organic soil, and
other deleterious material. The stripped or removed materials should not be mixed with any
materials to be used as structural fill, but they could be used in non-structural areas, such as
landscape beds.
Structural fill is defined as any fill, including utility backfill, placed under, or close to, a building,
behind permanent retaining or foundation walls, or in other areas where the underlying soil needs
to support loads. All structural fill should be placed in horizontal lifts with a moisture content at, or
near, the optimum moisture content. The optimum moisture content is that moisture content that
results in the greatest compacted dry density. The moisture content of fill is very important and
must be closely controlled during the filling and compaction process.
The allowable thickness of the fill lift will depend on the material type selected, the compaction
equipment used, and the number of passes made to compact the lift. The loose lift thickness
should not exceed 12 inches. We recommend testing the fill as it is placed. If the fill is not
sufficiently compacted, it can be recompacted before another lift is placed. This eliminates the
need to remove the fill to achieve the required compaction.
GEOTECH CONSULTANTS, INC.
Fedje Properties LLC
May 30, 2017
JN 17259
Page 12
The following table presents recommended relative compactions for structural fill:
Beneath footings, slabs 95%
or walkways
Filled slopes and behind 90%
retaining walls
95% for upper 12 inches of
Beneath pavements subgrade; 90% below that
level
Where: Minimum Relative Compaction is the ratio, expressed in
percentages, of the compacted dry density to the maximum dry
density, as determined in accordance with ASTM Test
Designation D 1557-91 (Modified Proctor).
The General section should be reviewed for considerations related to the reuse of on -site soils.
Structural fill that will be placed in wet weather should consist of a coarse, granular soil with a silt or
clay content of no more than 5 percent. The percentage of particles passing the No. 200 sieve
should be measured from that portion of soil passing the three -quarter -inch sieve.
LIMITATIONS
The conclusions and recommendations contained in this report are based on site conditions as
they existed at the time of our exploration and assume that the soil and groundwater conditions
encountered in the test pits are representative of subsurface conditions on the site. If the
subsurface conditions encountered during construction are significantly different from those
observed in our explorations, we should be advised at once so that we can review these conditions
and reconsider our recommendations where necessary. Unanticipated conditions are commonly
encountered on construction sites and cannot be fully anticipated by merely taking samples in test
pits. Subsurface conditions can also vary between exploration locations. Such unexpected
conditions frequently require making additional expenditures to attain a properly constructed
project. It is recommended that the owner consider providing a contingency fund to accommodate
such potential extra costs and risks. This is a standard recommendation for all projects.
The recommendations presented in this report are directed toward the protection of only the
proposed structures from damage due to slope movement. Predicting the future behavior of steep
slopes and the potential effects of development on their stability is an inexact and imperfect
science that is currently based mostly on the past behavior of slopes with similar characteristics.
Shallow soil movement can occur on steep slopes before, during, or after the development of
property. The owner of any property containing, or located close to steep slopes must ultimately
accept the possibility that some slope movement could occur, resulting in possible loss of ground or
damage to the facilities around the proposed structures. However, provided the structures are
placed on dense to very dense soil, such shallow movement would not affect the structures.
This report has been prepared for the exclusive use of Fedje Properties, LLC and its
representatives, for specific application to this project and site. Our conclusions and
recommendations are professional opinions derived in accordance with our understanding of
GEOTECH CONSULTANTS, INC.
Fedje Properties LLC JN 17259
May 30, 2017 Page 13
current local standards of practice, and within the scope of our services. No warranty is expressed
or implied. The scope of our services does not include services related to construction safety
precautions, and our recommendations are not intended to direct the contractor's methods,
techniques, sequences, or procedures, except as specifically described in our report for
consideration in design. Our services also do not include assessing or minimizing the potential for
biological hazards, such as mold, bacteria, mildew and fungi in either the existing or proposed site
development.
ADDITIONAL SERVICES
In addition to reviewing the final plans, Geotech Consultants, Inc. should be retained to provide
geotechnical consultation, testing, and observation services during construction. This is to confirm
that subsurface conditions are consistent with those indicated by our exploration, to evaluate
whether earthwork and foundation construction activities comply with the general intent of the
recommendations presented in this report, and to provide suggestions for design changes in the
event subsurface conditions differ from those anticipated prior to the start of construction.
However, our work would not include the supervision or direction of the actual work of the
contractor and its employees or agents. Also, job and site safety, and dimensional measurements,
will be the responsibility of the contractor.
During the construction phase, we will provide geotechnical observation and testing services when
requested by you or your representatives. Please be aware that we can only document site work
we actually observe. It is still the responsibility of your contractor or on -site construction team to
verify that our recommendations are being followed, whether we are present at the site or not.
The following plates are attached to complete this report:
Plate 1 Vicinity Map
Plate 2 Site Exploration Plan
Plates 3 - 6 Test Pit Logs
Attachments: Slope Stability Analysis Output
GEOTECH CONSULTANTS, INC.
Fedje Properties LLC
May 30, 2017
JN 17259
Page 14
We appreciate the opportunity to be of service on this project. Please contact us if you have any
questions, or if we can be of further assistance.
DRW:mw
Respectfully submitted,
GEOTECH CONSULTANTS, INC.
D. Robert Ward, P.E.
Principal
GEOTECH CONSULTANTS, INC.
NORTH
GEOTECH
CONSULTANTS, INC.
(Source: Microsoft MapPoint, 2013)
VICINITY MAP
157XX - 72nd Avenue West
Edmonds, Washington
Job No: Date: Plate:
17259 1 May 2017 1 1 1
Legend:
® Test Pit Location
— Slope Stability Cross Section
GEOTECH
CONSULTANTS, INC.
SITE EXPLORATION PLAN
157XX - 72nd Avenue West
Edmonds, Washington
Job No: Date: Plate:
17259 May 2017 No Scale 1 2
5
10
5
10
�Go, a�,�e JAGS
TEST PIT 1
Description
uutt ana topson
Brown mottled silty SAND with gravel and roots, moist, loose to medium -dense
-becomes gray, no roots, very dense (GLACIAL TILL)
* Test Pit terminated at 7 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* Slight caving observed above 4 feet during excavation.
IQOR' Go��e� ��av�eJSG�
TEST PIT 2
Description
Duff and topsoil
Brown mottled silty SAND with gravel and roots, moist, loose to medium -dense
-becomes gray, no roots, very dense (GLACIAL TILL)
* Test Pit terminated at 5 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* No caving observed during excavation.
GEOTECH
CONSULTANTS, INC.
TEST PIT LOG
157XX - 72nd Avenue West
Edmonds, Washington
I Job 17259 I D May 2017 1
Logged RW I Plate: 3 I
5
10
61
10
�Go��e JCS
TEST PIT 3
Description
uutt ana topsou
Brown mottled silty SAND with roots, moist, loose to medium -dense
-becomes gray, very dense (GLACIAL TILL)
* Test Pit terminated at 3 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* No caving observed during excavation.
SIR
SM
TEST PIT 4
Description
Brown mottled slightly silty SAND with roots, moist, loose to medium -dense
-becomes mostly gray, less silty with lenses of silty sand, no roots, dense
* Test Pit terminated at 9 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* No caving observed during excavation.
GEOTECH
CONSULTANTS, INC.
TEST PIT LOG
157XX - 72nd Avenue West
Edmonds, Washington
Job Date: Logged by. Plate:
17259 1 May 2017 1 DRW 1 4
5
10
5
10
TEST PIT 5
Description
....... Duff and topsoil
Brown mottled slightly silty SAND with roots, moist, loose to medium -dense
SP
SM
-becomes mostly gray, less silty with lenses of silty sand, gravelly, no roots, dense to very
........ dense
* Test Pit terminated at 6.5 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* No caving observed during excavation.
J5G
TEST PIT 6
Description
uurr ana topsoil
Brown mottled slightly silty SAND with roots, moist, loose to medium -dense
-becomes mostly gray, less silty, no roots, dense
* Test Pit terminated at 8.0 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* No caving observed during excavation.
GEOTECH
CONSULTANTS, INC.
TEST PIT LOG
157XX - 72nd Avenue West
Edmonds, Washington
Job Date: Logged by: I Plate:
17259 May 2017 1 DRW 5
4
i N7
5
10
. '
o
art o`5 S
TEST PIT 7
Description
Brown mottled silty SAND with gravel and roots, moist, loose to medium -dense
-becomes gray, no roots, very dense (GLACIAL TILL)
* Test Pit terminated at 5.0 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* No caving observed during excavation.
TEST PIT 8
\5�03 ayee 5
Description
Ei Brown mottled silty SAND with gravel and roots, moist, loose to medium -dense
f;
SM
-becomes gray, dense to very dense (SANDY GLACIAL TILL)
• Test Pit terminated at 6.0 feet on May 10, 2017.
* No groundwater seepage was observed during excavation.
* No caving observed during excavation.
Jto GEOTECH
CONSULTANTS, INC.
TEST PIT LOG
157XX - 72nd Avenue West
Edmonds, Washington
Job Date: togged by: Plate:
17259 1 May 2017 1 DRW 1 6
Fedje Properties LLC
J N 17259
Attachments
GEOTECH CONSULTANTS, INC.
Static
Seismic
2.129
•
1.419
•
Static
�"
c
Report generated using GeoStudio 2012. Copyright @ 1991-2015 GEO-SLOPE International Ltd.
File Version: 8.1S
Title: 17259 Fede Properties Slope Stability
Created By: Matt McGinnis
Last Edited By: Matt McGinnis
Revision Number: 1O
Date:5/3O/2O17
Time: 10:36:32AK4
Too[ Version: D.15.4.11512
File Name: 17259 FedieSlope Stabi|ity.gsz
Directory: S:\2O17]obs\17259FedieProperties (DRVV)\
Last Solved Date: S/3O/2U17
Last Solved Time: 10:36:32 AM
Length(UUnits: Feet
Tlme(t) Units: Seconds
Force(F)Units: Pounds
Pressure/p\Units: oaf
Strength Units: psf
Unit Weight ofWater: 62.4 pcf
View: 2D
Element Thickness: I
Static
Kind:3Q}PE/VV
Method: Morgenstern -Price
Settings
Side Function
|nters|ioeforce function option: Half -Sine
PVVPConditions Source: (none)
Slip Surface
Direction of movement: Right to Left
Use Passive Mode: No
Slip Surface Option: Entry and Exit
Critical slip surfaces saved: 1
Resisting Side Maximum Convex Angle: 1 "
Driving Side Maximum Convex Angle: 5
Optimize Critical Slip Surface Location: No
Tension Crack
Tension Crack Option: (none)
F of S Distribution
F of S Calculation Option: Constant
Advanced
Number of Slices: 30
F of S Tolerance: 0.001
Minimum Slip Surface Depth: 0.1 ft
Search Method: Root Finder
Tolerable difference between starting and converged F of S: 3
Maximum iterations to calculate converged lambda: 20
Max Absolute Lambda: 2
Loose toMedium-Dense Slightly SiltySand
Model: Mohr -Coulomb
Unit Weight: 125 pcf
Cohesion': 0 psf
Phi': 32 °
Phi-B: 0 °
Dense to Very -Dense Silty Sand
Model: Mohr -Coulomb
Unit Weight: 135 pcf
Cohesion': 100 psf
Phi': 40 °
Phi-B: 0 °
E i r
Left Projection: Range
Left -Zone Left Coordinate: (-38.7, 264) ft
Left -Zone Right Coordinate: (-19, 264) ft
Left -Zone Increment: 4
Right Projection: Range
Right -Zone Left Coordinate: (49, 290.17778) fit
Right -Zone Right Coordinate: (90.2, 300) ft
Right -Zone Increment: 4
Radius Increments: 4
Slip Surface Limits
Left Coordinate: (-40, 264) ft
Right Coordinate: (167.2, 276) ft
Seismic 1 1 nt
Horz Seismic Coef.: 0
� `
. •
I� p`q eil
II ��
4
Material
Points
Area
(ft)
Loose to
Medium -
Region
Dense
Silty
Sand
Dense to
Very-
Region
Dense
18,19,25,26,27,20,21,28,22,23
5,798.8
2
Silty
Sand
Slip Surface: 1D3
Fof5:2.12B
Volume: 3D3.99818M3
Weight: 49526.64S|bs
Resisting Moment: 2,5O2,761.5|ba-ft
Activating Moment: 1,175,320.3 |bs'ft
Resisting Force: 37,209.539|bs
Activating Force: l7,476.14Q|bs
FofSRank (Ana|ysis):1of175slip surfaces
FnfSRank ({}uery):1of125slip surfaces
Exit: ('19, 264) ft
Entry: (49.8O0001,29O.17778)ft
Radius: G9.3174S3ft
Cohesive
PWP
Base Normal
Frictional
X (ft)
Y (ft)
Strength
Slice
-15.4375
263.05457
0
137.7076
86.049256
0
2
Slice
-13.0625
262.54504
0
218.088
136.27651
0
3
Slice
-10.6875
262.13608
0
28551536
178.4098
0
4
Slice
-8.3125
261.82561
0
337.64008
210.98094
0
5
Slice
-5.9375
261.61207
0
372.70585
232.89246
0
6
Slice
-3.5625
261.49442
0
389.76735
243.55367
0
7
Slice
-1.1875
261.47207
0
388.77491
242.93352
0
8
Slice
1.060669
261.53622
0
449.94631
281.15766
0
9
Slice
3.1820071
261.67749
0
571.59624
357.17297
0
10
Slice
5.4188967
261.91182
0
731.63003
613.91049
100
11
Slice
7,771338
262.24913
0
835,25202
700.85967
100
12
Slice
10.123779
262.68363
0
911.83375
765.11936
100
13
Slice
12.43125
263.20541
0
965.88685
810.4753
100
14
Slice
14.69375
263.81331
0
1,000.7172
839.70146
100
15
Slice
16.95625
264.51875
0
1,017.2611
853.58345
100
16
Slice
19.21875
265.32545
0
1,018.1442
854.32439
100
17
Slice
21.48125
266.23791
0
1,005.7595
843.93238
100
18
Slice
23.74375
267.26155
0
982.13541
824.10946
100
19
Slice
26.00625
268.40292
0
948.85311
796.18229
100
20
Slice
28.26875
269.66992
0
906.9969
761.06076
100
21
Slice
30.25
270.88223
0
867.30604
727.75618
100
22
Slice
31.95
272.01724
0
830.82522
697.14514
100
23
Slice
33.933333
273.46231
0
780.33604
654.77968
100
24
Slice
36.2
275.26547
0
713.8792
599.01578
100
25
Slice
38.466667
277.26148
0
636,38797
533.99291
100
26
Slice
40.696879
279.43888
0
534.05932
448.12898
100
27
Slice
42.890637
281.82614
0
404.13346
339.10824
100
28
Slice
45.140637
284.58134
0
316.3968
197.70666
0
29
Slice
47.446879
287.80024
0
138.76976
86.712967
0
30
Slice
48.8
289.85041
0
19.960782
12.472881
0
31
Seismic
��KsmU.
c
Report generated using aeosmmozn1z cnnvn«x @ 19m1-zn15GEC-SLOPE International Ltd.
File Version: 8.15
Title: 17259FedeProperties Slope Stability
Created By: Matt McGinnis
Last Edited By: Matt McGinnis
Revision Number: 1O
Dote:S/30/2Ol7
Time: 10:36:324M
Tool Version: 8.1S'41151Z
File Name: 17259 FedieSlope Stebi|by.gsz
Directory: S:\ZO17]obc\1725QFedieProperties /DRVVK
Last Solved Date: 5/3O/2017
Last Solved Time: 10:36:32 AM
Length/UUnits: Feet
llnnehdUnhs: Seconds
Foroe(F)Units: Pounds
Pressuna(p)Units: nsf
Strength Units: psf
Unit Weight ofWater: 62'4pcf
View: 2D
Element Thickness: I
Seismic
Kind:SL0PE/VV
Method: Morgenstern -Price
Settings
Side Function
|nters|iceforce function option: Half -Sine
PVVPConditions Source: (none)
Slip Surface
Direction of movement: Right to Left
Use Passive Mode: No
Slip Surface Option: Entry and Exit
Critical slip surfaces saved: 1
Resisting Side Maximum Convex Angle: 1"
Driving Side Maximum Convex Angle: 5 °
Optimize Critical Slip Surface Location: No
Tension Crack
Tension Crack Option: (none)
F of S Distribution
F of S Calculation Option: Constant
Advanced
Number of Slices: 30
F of S Tolerance: 0.001
Minimum Slip Surface Depth: 0.1 ft
Search Method: Root Finder
Tolerable difference between starting and converged F of S: 3
Maximum iterations to calculate converged lambda: 20
Max Absolute Lambda: 2
Loose to Medium -Dense Tightly Silty San
Model: Mohr -Coulomb
Unit Weight: 125 pcf
Cohesion': 0 psf
Phi': 32 °
Phi-B: 0 °
Dense to Very -Dense Silty Sand
Model: Mohr -Coulomb
Unit Weight: 135 pcf
Cohesion': 100 psf
Phi': 40
Phi-B: 0 °
Left Projection: Range
Left -Zone Left Coordinate: (-38.7, 264) ft
Left -Zone Right Coordinate: (-19, 264) ft
Left -Zone Increment: 4
Right Projection: Range
Right -Zone Left Coordinate: (49, 290.17778) ft
Right -Zone Right Coordinate: (90.2, 300) ft
Right -Zone Increment: 4
Radius Increments: 4
Slip Surface Limits
Left Coordinate: (-40, 264) ft
Right Coordinate: (167.2, 276) ft
Seismic Coefficients
Horz Seismic Coef.: 0.2
•
Material
Points
Area
Loose to
Medium -
Region
Dense
18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,24,26,27,20,21,28,22,23
873.41
1
Slightly
Silty
Sand
Dense to
Very-
Region
Dense
18,19,25,26,27,20,21,28,22,23
5,798.8
2
silty
Sand
Current w�B~ Surface
���������m������m�ce
Slip Surface: 1OQ
FofS:1'419
Weight: 72633.577|bs
Resisting Moment: 8,Q53,499.9|bs-ft
Activating Moment: 2,785,82AJ|bs4ft
Resisting Force: 51,790.16|bs
Activating Force: 36,4Q7.442|bs
FofSRank (Ana|ysis):1of125slip surfaces
Fnf3Rank (Ouen):1of125slip surfaces
Exit: (-29,264)ft
Entry:(58.81O345 294.42468)ft
Radius: 6B.317127ft
Center: (O219G1123,329.SS791)ft
Cohesive
PWP
Base Normal
Frictional
Slice
Slice
-14.928571
262.9559
0
162.71817
101.6776
0
2
Slice
-12.214286
262.39598
0
260.52027
162.79113
0
3
Slice
-9.5
261,94962
0
343.98403
214.94508
0
4
Slice
-6.7857143
261.61459
0
408.61626
255.33178
0
5
Slice
-4.0714286
261.38924
0
450.6902
281.62249
0
6
Slice
-1.3571429
261.27248
0
468.04221
292.46523
0
7
Slice
1.7255504
261.2792
0
538.57268
367.78103
0
8
Slice
4.7592506
261.4044
0
927.84021
778.55037
100
9
Slice
7.3755504
261.62934
0
1,082.0692
907.96389
100
10
Slice
9.9918501
261.95626
0
1,187.7708
996.658
100
11
Slice
12.592857
262.3835
0
1,252.2106
1,050.7295
100
12
Slice
15.178571
262.91183
0
1,281.8832
1,075.6278
100
13
Slice
17.764286
263.54563
0
1,281.1818
1,075.0392
100
14
Slice
20.35
264,28799
0
1,257.8684
1,055.4769
100
15
Slice
22.935714
265.14266
0
1,218.8885
1,022.7689
100
16
Slice
25.521429
266.1142
0
1,169.8861
981.65099
100
17
Slice
28.107143
267.20806
0
1,115.051
935.6389
100
18
Slice
31.1
268.64821
0
1,052.1983
882.89919
100
19
Slice
33.933333
270.15329
0
995.6299
835.43269
100
20
Slice
36,2
271.49884
0
947.11935
794.7275
100
21
Slice
38.466667
272.96716
0
897.36794
752.98111
100
22
Slice
41.1
274,85409
0
819.84904
687.93503
100
23
Slice
44.1
277.23297
0
714.12346
599.22073
100
24
Slice
47.1
279.9072
0
599.03572
502.65065
100
25
Slice
50,012623
282.82875
0
472.66962
396.61691
100
26
Slice
52.837868
286.04211
0
328.04577
275.26308
100
27
Slice
55.925245
290.11553
0
215.78786
134.83922
0
28
Slice
58.205172
293.45276
0
53.867584
33.660203
0
29