january 2019—volume 2—issue 8 professional construction...
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January2019—Volume2—Issue8
GeneralDanielMorgan,hero
oftheBattleofCowpens
(whichtookplaceonJanuary
17th,1781)hasastatueand
squarededicatedinhishonor
inSpartanburg?Thestatueis
30feettallandfacestowards
CowpensNationalBattle)ield.
UpcomingEvents
ChapterMeeting
ChapterMeeting
Natl.BoardMeeting
ChapterMeeting
Didyouknow?
MessagefromthePresident:
DearPCEAfamily,
TheNewYeariscauseforcele-
bration,forspendingtimewith
friendsandfamily,andforlooking
back.Alotcanhappeninayearand
betweenthegood,thebadandthe
ugly,thismayseemlikeanunder-
statementformostofus.Asglasses
areraisedand)ireworksexplodeinto
thesky,it’simportanttorecognizethespecialsymbol-
ismthisholidaybringswithit.Atimeofnewbegin-
ningsandfreshstartsalsocomeswithatimeofre)lec-
tion.Whetheryourresolutioniskeepingyourhands
outofthecookiejarorgivingyourallatwork,itcan
takecommitment.Anditcanmakeallthedifferenceto
putthesehopesintowordsandwriteyourgoalsdown
onpaper.Asachapter,weaccomplishedseveralofthe
goalswesetforourselvesearlierthisyear.Asweenter
into2019Isincerelyhopewecanexpandonthose
goalsandaccomplishmoreandcontinuetosetmore
goalsaswegrow.Ilookforwardtoseeingyouallat
ournextmeetingandIwishyouallthebestin2019!
BenWeeks
ChapterPresident
ProfessionalConstructionEstimators
AssociationofAmericaUpstateChapter23
Page2—MeetingInfo;NewMembers
Page3—ConstructionbeginsonspecbuildinginSpar-
tanburg
Page4—WhatHappensWhenConcreteFreezes
Page7—DecemberChristmasPartyPhotos
Page10—PCEAUpstateChapter#23Members
InsideThisIssue
2019ConventionInformationMonthlyMeeting
Ournextmonthlychapter
meetingwillbeheldon
January17that6:00P.M.at
theAugustaGrill,locatedat
1818AugustaStreet
Greenville,S.C.
Pleaseregisteronlineat
https://tinyurl.com/
yaaudyhg
Markyourcalendarsforthe2019PCEA
NationalConventioninOrlando,Florida!
Dates:May1st-5th,2019
Location:LoewsSapphireFallsResort
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
WelcomeNewMembers!
Name:DaveSmith
Company:SignaramaAnderson
Position:Owner
WhyDidYouJoinPCEA?
Wedoalotofworkforcommercialcontractors–the
PCEAseemedlikeagreatplacetonetworkandmeet
newcontacts.
JanuaryPresentationTopic
Thismonth,PCEACatawbaValleyChapterMemberAndrewRudisillwith
BuildingPointSouthEastwillpresentonthefollowingtopic:
Trimble-Leveraging3DModelQuantitiestoDriveEstimatingEf@iciency
"Awork�lowfocusedon�lexibilityandaccuracy"
Youwon’twanttomissthis!
ConstructionbeginsonspecbuildinginSpartanburg
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
BytheStaff—UpstateBusinessJournal—Dec12,2018
Dallas-basedCourtlandDevelopmentrecentlyannouncedthatithaspurchased
morethan100acresoflandonFortPrinceRoadinSpartanburgtoconstructaspeculative
building.TheFt.PrinceCommerceCenterwillconsistsoftwosites—Ft.PrinceCom-
merceOneandFt.PrinceCommerceTwo,accordingtoanewsrelease.CommerceOneis
currentlyundergoing
siteworkinprepara-
tionfora436,800-
square-footcross-dock
building,whichisex-
pectedtobe)inished
inAugust2019,the
releasesaid.
CommerceTwo
isa399,000-square-
footbuildingsiteavail-
ableforbuild-to-suit
projects.Financialde-
tailsoftheproject
werenotdisclosed,butCourtlandDevelopmentsaidtheadditionoftheFt.PrinceCom-
merceCenterisexpectedtoattractcompanieswithdistribution,third-partylogistics,au-
tomotive,andadvanced-manufacturingneedswithintherapidlyexpandingindustrialcor-
ridorinSpartanburg.
“WehavebeenverymeticulousintheplanningofFortPrinceCommerceCenter—
takingintoaccountthedemanddriversandindustrialusersneedwithintheI-85Spartan-
burgmarket,”saidJonNapper,CourtlandDevelopmentmanagingpartner,intherelease.
“ThislocationprovidesunobstructedaccesstoBMWandtheInlandPortinGreer,aswell
as95millionpeoplewithinaneight-hourdrive.”
ColliersInternationalisrepresentingCourtlandintheleasingofbothbuildingsat
CommerceCenter.JDIRealtyisapartnerwithCourtland,andconstruction)inancingwas
providedbyCrossHarborDebtFund.ConstructionisbeingmanagedbyHarperGeneral
Contractors.
Formoreinformation,visithttps://bit.ly/2r9SGWC.
WhatHappensWhenConcreteFreezes?
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
BythePortlandCementAssociation—
https://www.cement.org/learn/concrete-technology/concrete-construction/cold-
weather-concreting
Weatherconditionsatajobsite–hotor
cold,windyorcalm,dryorhumid–maybevastly
differentfromtheoptimumconditionsassumedat
thetimeaconcretemixisspeci)ied,designed,or
selected–orfromlaboratoryconditionsinwhich
concretespecimensarestoredandtested.Con-
cretecanbeplacedincoldweatherconditions
providedadequateprecautionsaretakentoallevi-
atethenegativeimpactsoflowambienttempera-
tures.ThecurrentAmericanConcreteInstitute
(ACI)de)initionofcold-weatherconcreting,asstatedinACI306is,“aperiodwhenfor
morethanthreesuccessivedaystheaveragedailyairtemperaturedropsbelow40de-
greesFahrenheitandstaysbelow50degreesFahrenheitformorethanone-halfofany24
hourperiod.”Thisde)initioncanpotentiallyleadtoproblemswithfreezingoftheconcrete
atanearlyage.
Allconcretemustbeprotectedfromfreezinguntilithasreachedaminimum
strengthof500poundspersquareinch(psi),whichtypicallyhappenswithinthe)irst24
hours.Ifconcretefreezeswhileitisstillfreshorbeforeithasdevelopedsuf)icient
strengthtoresisttheexpansiveforcesassociatedwiththefreezingwater,iceformation
resultsinthedisruptionofthecementpastematrixcausinganirreparablelossin
strength.Earlyfreezingcanresultinareductionofupto50percentintheultimate
strength.Onceconcretehasattainedacompressivestrengthofaround500psi,itisgener-
allyconsideredtohavesuf)icientstrengthtoresistsigni)icantexpansionanddamageif
frozen.Wheneverairtemperatureatthetimeofconcreteplacementisbelow40degrees
Fahrenheitandfreezingtemperatureswithinthe)irst24hoursafterplacementareex-
pected,thefollowinggeneralissuesshouldbeconsidered:
Initialconcretetemperatureasdelivered
Duringcoldweather,itmaybenecessarytoheatoneormoreoftheconcretemate-
rials(waterand/oraggregates)toprovidetheproperconcretetemperatureasdelivered.
Duetothequantitiesandheatcapacityofcement,usinghotcementisnotaneffective
methodinraisingtheinitialconcretetemperature.
WhatHappensWhenConcreteFreezes?
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
Protectionwhiletheconcreteisplaced,consolidated,and@inished
Theexposureofconcretetocoldweatherwillextendthetimerequiredforitto
reachinitialset,whichmayrequire)inishingcrewstobeavailableforalongerperiod.De-
pendingontheactualambienttemperature,protectionofaconcreteplacementmayre-
quiretheuseofwindbreaks,enclosures,orsupplementaryheat.Itmayalsobeappropri-
atetoadjusttheconcretemixtureconstituentsfortheeffectofambienttemperatureon
settingtime.Thismayrequireanincreaseincementcontent,theuseofanaccelerating
chemicaladmixture,orboth.
Windbreaksprotecttheconcreteandconstruction
personnelfrombitingwindsthatcausetemperaturedrops
andexcessiveevaporation.Typically,aheightofsixfeetis
suf)icient.Windbreakscouldbetallerorshorterdepend-
ingonanticipatedwindvelocities,ambienttemperatures,
relativehumidity,andconcreteplacementtemperatures.
Heatedenclosuresareveryeffectiveforprotecting
concreteincoldweather,butareprobablythemostex-
pensiveoption.Enclosurescanbemadeofwood,canvas
tarpaulins,orpolyethylene.Prefabricatedrigid-plasticen-
closuresarealsoavailable.
Threetypesofheatersareusedincold-weather
concreteconstruction:direct)ired,indirect)ired,andhy-
dronicsystems.Toavoidcarbonationoffreshconcrete
surfaces,indirect-)iredheatersshouldbeused.Iftheconcreteisnotexposedtotheheater
orexhaustdirectly,thenadirect-)iredheaterissuitable.Cautionshouldbetakentoen-
surethatworkersarenotoverexposedtocarbonmonoxideanytimeaheaterisusedin-
sideanenclosure.Hydronicsystemstransferheatbycirculatingaglycol/watersolutionin
aclosedsystemofpipesorhoses.Typicalapplicationsforhydronicsystemsincludethaw-
ingandpreheatingsubgradesandheatingareasthataretoolargetobepracticalforan
enclosure.
Curingtoproducequalityconcrete
Curingnotonlyrequiresadequatemoisture,butalsoappropriatetemperature.The
temperatureoftheconcreteasplacedshouldbeabove40degreesFahrenheitusingmeth-
odsdescribedabove,howeverthedurationofheatingisdependentonthetypeofservice
fortheconcrete,rangingfromonedayforhigh-earlystrengthconcretethatisnotexposed
tofreeze-thaweventsduringserviceto20daysormoreforaconcreteelementthatwould
carrylargeloadsatanearlyage.Instructuresthatwillcarrylargeloadsatanearlyage,
concretemustbemaintainedataminimumof50degreesFahrenheittoaccommodate
strippingofformsandshoringandtopermitloadingofthestructure.
Innocaseshouldconcretebeallowedtofreezeduringthe)irst24hoursafterit
hasbeenplaced.Sincecementhydrationisanexothermicreaction,theconcretemixture
producessomeheatonitsown.Protectingthatheatfromescapingthesystemusingpoly-
ethylenesheetingorinsulatingblanketsmaybeallthatisrequiredforgoodconcrete
quality.Moreseveretemperaturesmayrequiresupplementalheat.
Concreteretainedinformsorcoveredwithinsulationseldomlosesenoughmois-
tureat40to55degreesFahrenheit)toimpaircuring.However,dryingfromlowwinter-
timehumiditiesandheaters
usedinenclosuresisaconcern.
Itisgoodpracticetoleaveforms
inplaceaslongaspossible,be-
causetheyhelpdistributeheat
moreevenlyandhelpprevent
dryingoftheconcrete.Live
steamexhaustedintoanenclo-
surearoundtheconcreteisan
excellentmethodofcuringbe-
causeitprovidesbothheatand
moisture.Liquidmembrane-
formingcompoundscanalsobe
usedwithinheatedenclosures
forearlycuringofconcretesurfaces.
Itisalsoimportanttopreventrapidcoolingoftheconcreteuponterminationof
theheatingperiod.Suddencoolingoftheconcretesurfacewhiletheinterioriswarmmay
causethermalcracking.Methodsforgradualcoolingofconcreteincludelooseningthe
formswhilemaintainingcoverwithplasticsheetingorinsulation,gradualdecreasein
heatinginsideanenclosure,orturningofftheheatandallowingtheenclosuretoslowly
equilibratetoambienttemperature.Massivestructuresmayrequireseveraldaysoreven
weeksofgradualcoolingtomitigatetheprobabilityofthermalcracking.
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
WhatHappensWhenConcreteFreezes?
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
PCEAUpstateChapter#232018ChristmasParty
UpstateChapter#23PresidentBenWeeks(right)presents
thePastPresident’sAwardtoRichBartels(left)
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
PCEAUpstateChapter#232018ChristmasParty
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
PCEAUpstateChapter#232018ChristmasParty
PCEAisBuiltOntheStrengthofOurMembersandTheirEmployers!
—ProfessionalConstructionEstimatorsAssociationofAmerica—
—UpstateChapter#23—MonthlyNewsletterVolume2,Issue8—January2019
TheUpstateChapterAppreciatesOurNationalSponsors