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BENEFITS OF CAST-IN-PLACE PARKING STRUCTURES

PROJECT BENEFIT - COMPETITIVE COST

An adept cast-in-place builder will often be able to deliver a structure of superior quality to a precast option for the same or lessor budget.

When analyzing costs, make sure to include the following items that are often overlooked:

•Equivalentdurabilitymeasures–toppingslab,additives•Skin–exteriortreatment•Longtermmaintenancecostsofjoints,connections,birddroppings,etc.

•CaulkingatPrecastJoints•Costpercar,notcostpersquarefoot-CIPprovidesmoreparkingperSF•CIPrequireslesslighting-fewerfixtures,lowerenergycosts

Many designers support the aforementioned:

“Initial costs are typically fairly even”

- Thomas Butcher, Walker Parking Consultants

“Ithasbeenourexperiencethatpreliminaryprojectedsavingsbyprecastdouble-teesystemsmaynotberealizedinthefinishedproject.”

-RonSaxton,InternationalParkingDesign

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PROJECT BENEFIT - TIMELY EXECUTION

With CECO’s cast-in-place solution, start time from NTP decreases by up to 10 weeks as there is no lead time for fabrication. This not only expeditesprojectdelivery,butprovidesthe owner better cash flow as there is no up-front cost for fabrication - you pay as you build.

CECO’sdepthofexperiencewithpreconstructionandconstructionprocessesallowsustovalueengineerwhatourcompetitorscannot-savingprojectstimeandmoney.

PROJECT BENEFIT - NO LEAKAGE

CECO’s cast-in-place solution will prevent the heavy leaking common withprecaststructuresincreasingthequalityoftheparkingexperiencefor the owner and/or the owner’s customers.

PROJECTBENEFIT-BETTERDRAINAGE

Our cast-in-place solution allows the forming of floors for proper overall drainage. This is much more efficient than try-ing to warp precast tees and compensate for tee camber.

Time to Start from NTP

Steel 16-26

Precast 8-12

Concrete 2-4

0 5 10 15 20 25 30

Weeks

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PROJECTBENEFIT-LIGHTING,SAFETY,SECURITYANDSIGNAGE

CECO’s cast-in-place solution provides open bays without shear walls, creating the followingbenefits:

• Increased effectiveness of lighting• Fewer dark and potentially dangerous areas• Increasedvisibilityofsignageandwayfindingcapability• Reduced operational costs associated with signing and lighting a precast structure

Tight Precast Structures Open Cast-in-Place Solution

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PROJECTBENEFIT-LOWOPERATIONANDMAINTENANCECOSTS

WithCECO’scast-in-placesolution,theprojectownerwillnotincur costly annual maintenance common of precast options.

Dependingonclimateconditionsasmuchas30%-50%ofalljointsmustbereplacedinaprecastgarageeach3-5years,adding down-time, cost and hassle. Additionally, pre-cast structures create many areas for birds to nest, leading to more maintenance cost and an uncomfortable environment for the parking public. CECO’s cast-in-place monolithic structure has farfewerjointsrequiringmuchlessmaintenance.PrecastOptionDamage

Precast Parking Structure Maintenance Information:

PrecastJoints(Cast-in-placehasapproximately5%ofthenumberofjointsasprecast):

•Averagelife3to5years•Typically30to50%ofalljointsareaffected•Processincludes:Routing,cleaning,replacing•Costaretypically$4.00/linearfoot

What if it’s Welded, not Bolted?

•Problemoccursatthebeam/double-teeconnection•50%oftheareatypicallyaffected•Repaircostisapproximately$375/connection•At3-5years,atypicaldeckof100,000SF+wouldcost$200,000and$300,000torepair.Then,eachyearafterthat,theownerwillspendbetween$50,000to$100,000inpreventativemaintenance

- Lee Popovich, Structural Preservation

“DurabilitymeasureshaveimprovedsuchthatIwouldexpectonagaragedesignedandconstruct-ednowtheexpectedmaintenancecostdifferencewouldbe$0.25-$0.30/sfperyear.”

- Bill Gmiterko, P.E., AGA Consulting, Inc.

(BasedonBill’sinput,a300,000SFprecaststructurewouldcost$75,000.00moreperyearthanacast-in-placestructureinmaintenance)

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DENVERINTERNATIONALAIRPORTCASESTUDY-PRECASTMAINTENANCE

10YearsofMaintenanceon13,000-carStructure:

•DIA-ParkingStructureLevel5MoistureProtection,2010-$2,121,334:“ProvideconcreterepairsandmoistureprotectionfortheDIAparkinggaragelevel5andotherareaswhereindicated.”

•DIA-ParkingStructureMoistureProtectionPhaseIII,2009-$7,762,701:“Theprojectistoimprovethe service life of the parking structures and to add protection to the structures from moisture and de-icers.Themajorityoftheworkincludestheremovalandreplacementofcon-cretethatisinpoorcondition, the resealing of horizontal and vertical surfaces to improve the resistance to moisture, resealingjointandimprovingtheshearconnectionsbetweentheconcretefloorpanels.”

•DIA-ParkingStructureMoistureProtectionPhaseII,2006-$6,128,000:“Theprojectistoim-provetheservicelifeoftheparkingstructurebyprotectingtheexistingstructurefrommoistureandde-icers.Themajorpartsoftheworkincluderemovingandreplacingtheconcretethatisinpoorcon-dition, resealing horizontal and vertical surfaces to improve their resistance to moisture, resealing joints,andimprovingtheshearconnectionsbetweentheconcretefloorpanels.”

•DIA-ParkingStructureMoistureProtectionPhaseI,2001-$6,249,739:(Noprojectdescriptionavail-able,assumingitisidenticaltoPhaseIIandIII)

TotalcostofDIAprecastparkingstructurerepairsandmaintenancefrom2000to2010:

$22,261,774,or$1,712.44perspace

(Constructionwascompletedin1995)

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PROJECTBENEFIT-RIDEQUALITY

CECO’s cast-in-place option will eliminate the annoying “thump thump thump” irregularities com-mon of a precast structure due to the “double t” design of precast garages. CECO’s cast-in-place park-ingstructureshavenojointstojostleyourvehicleasyoupark.

PROJECTBENEFIT-HIGHERPERCEIVEDCEILING

WithCECO’scast-in-placesolution,thereisapproximately10.5feetofspacefromtheceilingtothebottomoftheslab.Onprecastoptions,thereisabout8.5fttobottomofteestems.

Precast - Low Ceiling Cast-in-place Ceiling