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MAUNALUA~ .OAHU, TAX .MAP KEY:

HAWAII 3-9-14

·.WALTER LUM ASSOCIATES, INC • CIVIL, STRUCTURAL, SOILS ENGINEERS·

NOVEMBER 4, 19 7·0

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·,;~;!~~~s:;~·: , .. .···· ·----·· ·- ·· · J030WAIAIA,E AVE.; HON.OLULIJ, HAWAII 9."16 • TEL. 737-7931

."•·.

· •···~: : .. :_;'W~i~ER'LUMASSOCIATES,INC.· : ' ... ·.--~--.....-.....;.------------

····CIVil, STRUCTURAL, SOILS. ENGINEERS

.. : I l. 'f:.·

·',• .......... .·,·1.·; w·.~n _.,. .. · .. ,;·. ·,.,'

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Nayembe:r 4·, 1970 ·:·• '·· ;·:·: .. ·: ... ····\,·:.··~.~.. ·~~.: ....

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. :.··. ,•,

· ... _,_·.

·~· ' · ... ~ ...... ·;:·

. ·KAISER HAWAII KAI DEVELOPMENT ' 2997',', ' ' ' '

· Honoluiu, · Hawaii . 96802 ·

cen~:::~, Hawaii Kai ~i~e ExtOnBJ::S.~;:,. . · • ··' ' · ·wailua Street. to Kaltiartui' .Subdivision, Unit• t ··.· ··

. Preliminary so!l. Report · · · · '··

.;:···

· Maunalua, Oahu, Hawaii . Tax Map Key: 3-9..;...14 .· ... · .. · .. · ...... .

. Tr~~smitted .herewith is our 'prelimin~ry ~oi{ r~port for. design· purposes · · '1" ::for the Hawaii Kai l)rive Extension - Wailua Street· to .Kaluanui Subdivision, ...

:. Un:l t I. ·· . · . ' ' I· l ~ . .

The surface. soils at th~ ~ite may be generally described as stiff brown silty and clayey sands with gravel ~nderlain by rock o.r boulders with.··

· clay pockets. ·Soft underlying materials· and recent fills were encoupter~d· along the ·northern settio'n of. the route. · · . ' '

For the general pavement design, 2 in .• of asphaltic concrete, 6 in~ of base. course and 6 in. of subbase are recommended. '

Soft spots, clayey soils or unforeseen conditions may· occur in localh:ed. areas and wi.ll have to be adjusted and corrected :f.n the field as they detected. · ·

. , .. Earthwork should be done in. accordance with the requireilients of Ch.apter ... · .23, Revised Ordinances of Honolulu, 1961 As Amended and the r~commendations'

· contai.ned· herein. · . . ·

, 'The report -includes a Bo~ing · results, recommendat~ons .and

. . . . . . ' . . .

Location Pl~n~ boring logs, lal:>oratory limitations.

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·• Respectfully subtnitted,

·. WALTEI( LUM ASSOCIATES, INC.

· .. ·~··· ... ·.··:.~·,.'-.. ·· '• ' '• .

Ez~a Koike .•. · ..•. • .. ·, Professional Engineer Hawaii. No. 145.0 ·.

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FIEIJ) EXPLORA:XION AND LABORATORY TESTS .· , · .. ~-~ ,;. No :.-:~~: '

• '!. •:~\~ ·:: ·.•.:;::;.~_;;; .:·: ..• '

...... : ~-~:· :,··,.

'• .·~.·~:·.: •· ... SOIL CLASSIFICATION SYSTEM. . · .. ~; ·-:.' . ·,•, .. .

. t··

'·GENERAL SITE ·co~ITIO~s. .. . . . . •,: .. . . :· .. .. ' ... • ... ·:.

INTERPRET~TION OF. SOIL CONDITIONS .. ~ .. •'· ·.•·: .. •; :;.·•.--··:··· · .. •. :• '.' DISCUSSION AND RECOMMENDATIONS .•. . -· ., •: ... •:· ..... _ · .. ::: ... ' -~·'

-·:·-'

.... '. -~ ..

A •. LOGS OF . BORINGS .· ·~· .· . ~·-. <;;:~;-.-

•,",,

B. SUMMARY. OF I,.ABORATORY TEST RESULTS .. ...; Tables >tA.\ind. IB "··.l ."

C~ · PLASTICITY CHART

D. CBR TESTS .(.' .:.·,·

E.; . LOGS OF BORINGS FROM 1'KALUANUI 'UNIT f &'.PART 'oF UNIT ·3" ' . ,··.· . . '

F.;: LOGS OF BORINGS-FROM "HAWAii l<A!I>RJ:;VE

LIMITATIONS. . . . ·.·

.. BORING LOCATION :PLAN Figure 1· ···.·_:/

~ .'· :: ;-

·.·· ._ ·I • ·. · ·.PROJECT .. VICINITY MAf- ...; Figure 2 : .··· .. :

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HAWAII ·u:r bin\TE EXTENSI~N - - . > . -~ .. ·. ·< · >~:.;:>6::~:',~·-· •··· :.. ...... -----T To KALUANUI strimivisio:N, UNIT :r: •. I>RELIMINARY SOIL REPORT _:. :

. ·MAUNALUA, OAHU, HAWAII TAX MAP KEY: 3-9-14

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. aCOPE OF EXPLORATION ;'; . . , ·,e:, / c i ?. t, · . : • .. ·•.. :. .. :

·- The purpqse of. this exploratiqn~was .to, detertntn~ general

for ciesi~ purposes fQ:i:' :t~e Hawaii. ·Kai Dl:'ive .Ext"ension .. Waiiua Street

· .. Kal~anui_ Subdivision Unit I. .. -... ::·:·:· :.-:__·

~ . . . . : . . . ' . . ..

This report includes' field eXplorati~n ~- lahbratory tests and general ..

reconmiendations. for general-pavement d~sign • \'; ' :. : -~··; -~ _;; :· . ,···

. ' ' ' :, :. ' 'FIELD EXPLORATION .AND LABORATORY TEST_S ' ' · .. : ~: . . ·; . '. •' ,. ·.· . ~ ·.: ) ..

-.:··.·

t~'

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·. ~ '•i ·":.; ..

, . · <: ; -: ·_ •'· Two borings were made at . the site. · Also at ~~ched are the logs o~ 2 ' • j :'.":-~ ... ,~~ _:~:-· ·.·-:. __ :_. • < • • • . • ' • •. • '·.

·· ··' ··' · · borings made previously for Kaluanui Unit .2 & ,Part of Unit: 3,

- 7 ~ 1967; cmd one boring for Hawaii ~i ~rive -. Mari~a /1i0 Ar~a, ·:.·,18, .·1966. The locations of'these b~rings .are shown .. on Figure 1,

, Location Plan. ·:-:

...

'· .: Borings were made·. With 4~i~ ~-. diameter ·.augers.: .. Soli: samples -~ere. recover~d -'- .

i : . ·.. : .. . : . . ;,. ·-:: '. ·. ,· ' ' '> .· ·. ..·· :'<:.: ..

witl1 .2.-in. standard split spoon samplers,driven with .a >140-lb hamm:er f~llirig- .· ..

30 inches .• -';'·-. ·: :,'

Laboratory· ~ests i~cluded: natural water 'content, Atte:i:'be:i:'g limits, ·, .. ·

; -_ .. ·: :·· . analysis, expansion .and CBR.-. .· '. '. ,.

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. Soii samples. wer,e visually -~bse~ed ~rtd :$:ubj~ct~d~ t'o appropriate

\_:.·

·,:•

in the laboratory.· Based on.visua~:obse~ations and .. _laboratory·· tests, . ' '

. the soil .descriptions in t:h~ boring logs are g~nerallymade i-n.

the. "Unified Soil Cl~ssificatio~ System~"

.GENERAL. SITE CONDITIONs• ' .~ t '. ·.:··· <· ,, '

p:toposed roadway is an extension of Hawaiil<.l!i-Dr:i.ve from.Wail~a . . . - ... ' . .. ·' . .

Kaluanui Subdiviiiion,, Unit_ I. (appr~xin'lateiy 580 ft). : .-·

·S.H.gnment follows an existing constrtictiC>n road. There ; . . . . .. . ..

stgckpile at the northeast end. of the roadway~

tNTERPRETATION OF SOIL CONDITIONS < .. : _ - · ;,• .. -

From the fie+d explora-tion, the soils~ at the ~ite m~y -b~ g~n~raii;> - _.,._._.

::.described as follows: . - . I :: !~, '

·.Stiff brown silty arid clayey sa11.ds with. gravel unde~lain

by rock or bqulders with clay pockets~ Soft underlying·

materials.a:nd recent fills wereencountered along the

:.··. ' northern sect~on. of the route • :'·" '·:···

!-.

~--~~~er ·was encountere_d --:Lri the borings at -~~oti·t .5-ft depth during the ·.•

.·.exploration •. _.· .. · ·,: ;, . · .. '

~~r-~ore detailed ·des~~i;;.tions -o~- -~o~ls"enc~h~tered in the:drill ~~1-e~,. r ., , \,, .

refer . to 'the boring logs~-

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DISCUSS,ION Arm RECOMMENDATIONS ,, -~ ':

·,.

. :.\·

. -~ :·_ . . . .. ' . '

. ·.·:

• ... · .,

i'' ->·

·' ~

!he ·proposed plan is to extend Haw~Lti Kai Drive''from· W~il~~ <Street · .-,·

northeastward about 580 ft. :.---· :'·.:.· ;_:.·

': .....

-~;: )

·., _-. ·-:·',

The •preliminary grading plan' i~dic~t.es · low• fills. (ie~~ tha~. about 3 ft) ~

In· .general, surface soils ·te~te~ in'··~he l;aboratory. geD.erally indicated··

expansion'properties less than 3%·and CBR values.ranging from about 9 .\

'49 •.

'··, ': .•. . < .. · -~ •'. - . . spots may occur: along the existing construction road. ·· Some

'set,tlement may· 6ccur:lYhere the ~·up,d~rlying soils may be soft ••

·.·;

·:_, .

.... ,._.

l ....

.. Site Grading .-·1 . .'

Guide lines regarding: ~it'~ grad:ing. ar~. ~s. follows: ..

J.. : ..

·' In general, the ·on-site. soils may be used ·for ..•. ··

. - . ~ : .,

the.construction'of the proposed fill. .If :J · .. •'',

. / ' 'fill material is imported to. the site' it '

should 'be s'elect non-expans'ive ~terial with.

.less than 3.:..in• ms.Xim\.un size .and·a plasticity .·.· ..

·. inde~ of less than 15.

. ' · · >:2 (. Miscellaneous debris shcmld be cl~~red and · . ~. -, ' ·.' . . .. . ~~ . .. removed. prior. to site fill:l.ng •..

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... ·toc;alized so£:( pockets sho~ld )>.e. :excavated .,

; > .: ·,·· ...

and backfilled' ~ith compacted seiect material~'

·.. :: .·

. lla,rd spots should be removed and the sub grade .• ·. : : . .

scarified and recomp~cted to match the density ':',,

· 'of the surrounding ·ground.

Fills should be .constr~cted iti approximately ... · ' . :.1 . .· . .

' level' layers starting at the lower 'end and

. working.· upward. Fills··· s}:lould l>e ~aid in :;?> . : -' .. :· .

6-in~· compacted ··layers •. The' fills below ' '

· 2. ft: ·from sub grade· level should be~ COinpacted .;l

to a relative density of at least 90% of ,, '

'MSHO T-180-SJ den~ity~:. The· fills within· .:·>:

. '· .... '.

the. top 2 ft of subgrade should be compacted · . : ·;- ::

·. to 95%.

··.:·

The sub~rad~ •· shou:l,d b~ gr~ded .. to p~event ,-'"-·.-.·

. ' ponc'ling of water • '·_,·.

.. •.

· .. ·,;~ : . . :~ . ·.:: :~· ".

,,

·.:Roadway Pavement•· Section· :·:·.· ,·

.·.'

.. ·' .. :···

... ;. ·., ....

·.;_

._:;

·,.',

... . . · <rn general, -;:'

the,' pavement' t:l,lick~~~~ f~r:::tl:te 'l'i6posec1 <ro~dw~y may

be. as follows: · .,.·

·,·

' <,' . ·.1. ~earin~ course.- 2-in •. asphaltic concrete. ·'·

·_,·. 6""in.: base ·co~rse~·

. ~ ,, 2. Base Gourse ....

··,··,;

···.· 3. Subbase ·c~u~se ·6-in. subbase ,course. over ·.··:::.

.;··

, .. a·p+epared.subgrade~ -,;·.: ,',', .:

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· ;< Provi~ions,,~ho~id. be .made :.in .the corit~a~-~ ·d~cutn~nts ·to al;I.ow· .•...

. for local ~djustthe~te regar.d!ng ~Ubbas~ riqu:lrements i~i. the f:t~ld ..

as .ground. 'conditions are exp?sed at .sttbgradelev~is. In general,--.

subbase thickness will depend upon the type .of material within

the top 2 ft ~f · sub grade~ ·· Where pockets· of clay (adobe) soi.ls . . . . . . .

exposed at subgrade, an 18-in. su'f:>base layer should be used •

-~: . ·. ,;··. ... . ':: .. : . . ·· .· ... · .. ·.·· •·.. . . . . ..... · .

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.. . It is reconrinended that the subgrade be compactedandshaped to . . .

·drain~ ·To avoid the ponding of wate:r a:nd softening of the .. ··

•: · subgrade. at low points, subdrains sh0ul<:l be placed to drain . ·. .

wa-ter from l:Jl,lbgrade levels. Where catch basins are placed in' . . .

-l~w areas' . weep holes should be placed at . the sub grade levels ... •· . . .

._,, . •.·. ·through the walls of the catch basi_ns which are placed in

theselow areas • . , ..

· .. : ,.· .. , . :· .: :·~ . ·' '. :· .. , .

. :·.· .... ,:.

Because of. som~. underlying soft: d~posi,.t's i~ localized areas;

·'!,:: . :} differen'tial _settlements are possibl,e·~·.:· ~t:tiitiee. sho~:tc:l be . ' I, ·',. > ·, . ..· .• •:

···:,.

·. -, . . ~-)

placed after the fills are construct:ed~: Utility lines should :.·· .

:·be designed with flexible joints, par~icularlY where lines are· .

col:uiected to structures. Gravity_ flow' ':tines should be made .. ,"·

· . as. steep as . possible. .·,.

.' · · .. Because the invert 6f the proposed sewel" line niay exte11d into ...

.:·::·i.' · .. ;,-.:soft underlying soil,·· the excavat;tcitl.~ shc:mld be •made in .short· .. .'."· ' . ,' ··" . ' . . . . . :.•.

. ,1: ·",•';·'' .·

··,.

·e·· .... _.: .. .; :·: ..

(' ..

,·,· .. ·: . '

.':•) . . · sectibns and backfilled . as soon as possible. The trenches

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shouid. be well btS:~ed ~ Soft: sp.ots ':it,, tl:i~ .b,~ttottt : shouid be

. ~-.. : : .. .: ._;_

. ·.excavated and backfilled wit}J. 'select 'material compac~ed '·to:.··

·.· 'match the 'density. of the surrounding ground. A base. course

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3030 WAIALAE AVENUE • HONOLULU; HAWAII 96816_. PHONE 737-m·,. ' :· ... : . ~- ~- ·.

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Boring LogkAwAII .KAI DRIVE EXTENSION . BO~ING NO.-· l Sheet No. .of _ . .-. .;...• _.__ UNIT lDrillcor VJA.LiE-1'\ iLUM A'??Dv.Date OCT. '.5, :l ':no. PROJECT . WAILUA ST. TO KALUANUI SUBD~

LOCATIO~ Mau:nalua,. Oahu, Hawaii . 1

Ficord Party MA.KALlL.tl.: , HA.?HIDA. . . Tax Map Key:· 3-9-14 ·Type .of Boring AU6~F..( ~?~~L.E.) Dlam. · - · 4~· ·

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3~30 WAIALAE AVEN&e ~ HONOL~LU. HAWAII 96816 ~ PHON~ n7-7931 . . . . . ..... WALTER ilUM ASSOCIATES I · .. 1 .

. . . •' 'i .. . · .. · ... . L , -.·Boring • 0~~Aii KAI DRivE EX!ENSION BORING NO.'.· . '2 Sheet No;. · ~- · · of'_· ..... '_:·....;.._

UNIT \Driii•~·Wt\LTE.I\.LUM A??DCJ, Date OC..l.S,'t")'10 · .PROJECT. WAILUA ST •. TO KALUANUI SUBD. . Field Partv M A. "'AU L/lo.. , H A. t, 14 I t7 A.

LOCATION ... J1aunalua, Oahu, Hawaii Tax Map Key: . 3-9..,.14

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- SUMMARY OF LABORATORY TEST' RESULTS

':BORING'~~.' •... '.:·. . BAG. SAM?L.e ·.:BAG S:AMPLE. e>t-6 ~AMfLE.. ·.' 11 A". '''B"' "0' 1 ·. , SAMPLE NO. ··. · • . . : ~ . . . : . . . : .

'DEPTH BELOW SURFACE\ S;URFAC..'B- .. ,.5URri\C,e .... SU.RFP..C:.'E:"

.· D~SCIUPTION ·_.··· ... ·· -· •. _· _.;s~-~~ ~~~-~~:~~:~:·~~:~:A~~,~~~ti~~~~-~l~ ~-~; ~~~~=~:~2.~:~.1~::~~~=;~~?;.· . IN/GRf;.,\{'eL. '. ltJ/r.: Rt-.yr..k----:_: w/G!<i><•IE.L ..... =-----~-----"-c .... ·

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. ,, GRA_I:N..-s:ti:E ANALYSIS. (% Passing) · .

·. ·. · S.ieve 1Y1.'' · . 1"

l/2" 114 . 1110 · .. ·· ...

.• ' 1120 1140 .•

' ' ' 11100 ·, .· 11200 '.

.. ··> .··

. f;.'!,.r l)ried or Na'ti:tral-'.· ·Liquid Limit_

·· , Plastic Limit· .. Pla~s ticity · Incie~ ·.·

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NATURAL·-·.· .. NATURAL.-'j& ·.: 34

NhJURA-l.. (f.'t

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Dilatancy . Toughness

Dry Strength

_M'f:.!)\UM _, \ QUICK ... : :··.: S\...I&HJql\eo. . s L.l v:,wr

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: ~IFIED SOIL CLASS~~ICATioN · . APPARENT SPECIFIC GRAVITY

. . '.• . .

· E-XPANSION AND CBR TESTS.· (Surcharge-51 P. S •.f. ). M9ldi~g Moisture,.% · . Molding Dry Density, P.c·.:F. Swell. upon saturation, %

CBR at 0.1" Pe_netratio:Q.

MOISTURE~DENSITY RELATIONS OF SOILS (MSHO T-180-57 Method_··_) Dry to Wet or Wet to Dry ·

·.Max. Dry Density (P.C.F.) . ·Optimu1ll Moisture (%) ·

. .... ;. ..... REMARKs:·

tv\'E:Q.· HI £PH . MtDIUM · .. $1.\V.,H"H•IcO.

.60 'Sk- :SYj

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WALTER LUM ASSOCIATes; INc: m . ·· CIVIL. STRUCTURAL. SOILS . ~NGINEERS I

··Date ·.to~-1"-io-' ,.,

By< ... ·f?,T· .. ·:· .. , .:;·

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TABLE 15:·:·- SUMMAR~ OF LABORATORY TEST,RESULTS ..

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'GRAIN-SIZE ANAlYSIS (% Passing)

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.·· .. Air Dried or Naturil .. :.· .. .0 .-~

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. ·.· Liquid Limit '· ·--.·' '

Plastic Limit Pla'sticity Index'·

Dil~tancy Toughness

. Dry Strength ' ~ ..

~ :_.

'·

,, : .. ··

··.UNIFIED SOIL CLASSIFICATION

.. APPARENT SPECIFIC. GRAVITY·.· . ·_ ;'_~ .

·,,_·.·

EXPANSION AND·. CBR TESTS (Surcharge-51 P ~ 5. F.).· Molding Moisture, % . Molding Dry Density, P.C.F. Swell upon saturation, % CBR at 0.1" Penetration .

-':.

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·'

MOISTURE-DENSITY RELATIONS OF SOILS·' (AASHO T-180"-57 Method_) Dry to Wet or Wet to Dry Max. Dry -Density (P.C.F.) Optimum Moisture · (%)

··'REMARKS·: ·.: ... :.·'

··-; ..

Date ·. lO ~ \V, ·10 . By -~~

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WALTER LUM ASSOCIATES, INC. fl CIVIL, STRUCTURAL, SOILS. ENGI~EERS w

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LIQUID LIMIT

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PROJECT HAWAII KAI DRIVE-:- MI\RINA 10 AREA DrlllerWAI.TER 1-UM ~c. INC. Date Aus.·. !5',1966

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