Upload File

design example_ tied portal frame base

5
The pad bases for a singlebay portal frame are to be joined by a horizontal tie to take out the horizontal thrusts from the portal legs. The portal is similar to the one which was designed as an untied portal in section 11.3.4. Loads and dimensions are shown in Fig. 12.4. Loadings From section 11.3.4, vertical superstructure load, P = (dead load) + (imposed load) =G+Q = 175 + 225 = 400 kN Qas a percentage of P is 100 Q/P = (100 × 225)/400 = 56%. From Fig. 10.20, the combined partial factor for dead and imposed loads is γP = 1.51. Horizontal thrust, H = 50 kN The horizontal thrust H arises from vertical loads G and Q, and will therefore have the same combined partial load factor γP = 1.51. Size of base From section 11.3.4, the net allowable bearing pressure, na = 300 kN/m2. On the basis that the horizontal thrust will be taken out by the tie joining the portal feet, the minimum area of foundation required is A base 1.2 m × 1.2 m will therefore be chosen. Comparison with the example in section 11.3.4 shows that the introduction of the horizontal tie has reduced the base size. Design of horizontal tie The tie will be a mild steel bar, as shown in Fig. 12.5, encased in concrete for durability. Ultimate tensile force in bar, Hu =γPH = 1.51 × 50 = 76 kN From BS 8110, the characteristic tensile stress fy = 250 N/mm2 for hot rolled mild steel. The partial material factor γs = 1.05. Total Pageviews 621,549 Feed Enter your email address: Subscribe Delivered by FeedBurner Search Search Follow @Engineershrb Builder's Engineer Spaceframe Specialist We design, fabricate, supply and install spaceframe from Singapore

Upload: junatienza23

Post on 15-Sep-2015

15 views

Category:

Documents


2 download

Report

DESCRIPTION

Design Example_ Tied Portal Frame Base

TRANSCRIPT

  • 6/19/2015 DesignExample:TiedPortalFrameBase.|Builder'sEngineer

    http://www.abuildersengineer.com/2013/01/designexampletiedportalframebase.html 1/5

    Home PostsRSS CommentsRSS Search

    Design Example: Tied Portal Frame Base.Twittear 0 0

    Thepadbasesforasinglebayportalframearetobejoinedbyahorizontaltietotakeout thehorizontal thrusts from theportallegs.Theportalissimilartotheonewhichwasdesignedasanuntiedportalinsection11.3.4.LoadsanddimensionsareshowninFig.12.4.

    LoadingsFromsection11.3.4,

    vertical superstructure load, P = (deadload)+(imposed

    load)=G+Q=175+225=400kN

    QasapercentageofPis100Q/P=(100225)/400=56%.

    FromFig.10.20,thecombinedpartialfactorfordeadandimposedloadsisP=1.51.

    Horizontalthrust,H=50kN

    ThehorizontalthrustHarisesfromverticalloadsGandQ,andwillthereforehavethesamecombinedpartialloadfactorP=1.51.SizeofbaseFromsection11.3.4,thenetallowablebearingpressure,na=300kN/m2.

    Onthebasisthatthehorizontalthrustwillbetakenoutbythetiejoiningtheportalfeet,theminimumareaoffoundationrequiredis

    Abase1.2m1.2mwill thereforebe chosen.Comparisonwith the example in section11.3.4showsthattheintroductionofthehorizontaltiehasreducedthebasesize.

    DesignofhorizontaltieThetiewillbeamildsteelbar,asshowninFig.12.5,encasedinconcretefordurability.

    Ultimatetensileforceinbar,Hu=PH=1.5150=76kN

    FromBS8110,thecharacteristictensilestressfy=250N/mm2forhotrolledmildsteel.Thepartialmaterialfactors=1.05.

    Total Pageviews621,549

    FeedEnteryouremailaddress:

    Subscribe

    DeliveredbyFeedBurner

    Search

    Search

    Follow@Engineershrb

    Builder's Engineer

    SpaceframeSpecialist

    Wedesign,fabricate,supplyandinstallspaceframefrom

    Singapore

  • 6/19/2015 DesignExample:TiedPortalFrameBase.|Builder'sEngineer

    http://www.abuildersengineer.com/2013/01/designexampletiedportalframebase.html 2/5

    Categories:FOUNDATIONS

    Therequiredcrosssectionalareaofbaris

    Provideonenumber25mmdiametermildsteelbar(area=491mm2)toactasthetie.ThiswillneedtobeadequatelyanchoredintothepadbaseasshowninFig.12.5.

    Topreventpossiblefoundationspreadfromlackoft,thetiewillincorporateaturnbuckle,totakeupanyslackpriortosteelerection.

    Fig.12.5Tiedbasedesignexampletieroddetail.

    Related Post:FOUNDATIONS

    0 comentarios:

    Post a Comment

    LabelsFOUNDATIONS (134) PILES (61)STRUCTURES (58) WATERPROOFING (58)SOILS(47)FOOTINGS(30)SITEEXPLORATION(30)BUILDING(29)PADFOUNDATIONS (18)STRIPFOUNDATIONS(18)CONCRETE(15)RAFTFOUNDATIONS(14) DRILLED PIER FOUNDATIONS (13) RETAININGWALLS (10) EXCAVATIONS (9) SURFACE SPREADFOUNDATIONS(9)

    Popular PostsCOMPONENTSOFABUILDING:SubstructureandSuperstructure.Abuildinghastwobasicparts:(i)Substructureorfoundations,and(ii)Supers1ructure.SubstructureorFoundationisthelowerp...

    DesignExample3:ReinforcedStripFoundation.Theloadbearingwallofasinglestoreybuildingistobesupportedonawidereinforcedstripfoundation.Asite

    investigationhasrevea...

    Example:Pilecapdesign.Apilecapisrequiredtotransfertheloadfroma400mm400mmcolumntofour600mmdiameterpiles,asshowninFig.14.30.Pilecaps...

    BORINGMETHODSSITEEXPLORATION.Thefollowingarethevariousboringmethodscommonlyused:(i)Augerboring.(ii)Augerandshellboring.(iii)Washboring.(iv)Percus...

    FOUNDATIONSFORBLACKCOTTONSOILS.Blackcottonsoilsandoherexpansivesoilshavetypicalcharacteristicsofshrinkageandswellingduetomoisturemovementthroughthem.Du...

    TIMBERINGOFTRENCHESSOILS.Whenthedepthoftrenchislarge,orwhenthesubsoilisloose,thesidesofthetrenchmaycavein.Theproblemcanbesolvedbyadopting...

    DesignExample5:Padbaseaxialloadplusbendingmoment(smalleccentricity).Acolumnpadbaseissubjecttoanaxialloadof200kN(dead)plus300kN(imposed),

    ManufacturedFoundationDrainageSystemInstallation.

    MANUFACTUREDFOUNDATIONDRAINAGESYSTEMS

    PrefabricatedFoundationDrainageSystemInstallation

    PREFABRICATEDFOUNDATIONANDSOILDRAINAGESYSTEMS

    DesignExample:Holedbalancedfoundation.

    DesignExample:Trapezoidalbalancedfoundation.

    DesignExample:CantileverBalancedFoundation.

    DesignExample:RectangularBalancedFoundation.

    Balancedfoundations(rectangular,cantilever,trapezoidalandholed)Design.

    DRILLEDSHAFTS(6)MAT FOUNDATIONS(5)SHEETPILE(5)WALLS(5)SLABS(4)SLIP CIRCLES ANDUNDERPINNING (4) STRUCTURAL DESIGN (4) STEEL (3)BULKHEADS(2)FLOOR(2)MASONRY(2)ROOF(2)STONE(2)COLUMNS (1) DOORS (1) PIPES (1) TIMBER (1) TIMBER PILES (1)

    VERTICAL TRANSPORTATIONSTRUCTURES (1)WINDOWS (1)WOOD

    CONSTRUCTION(1)

  • 6/19/2015 DesignExample:TiedPortalFrameBase.|Builder'sEngineer

    http://www.abuildersengineer.com/2013/01/designexampletiedportalframebase.html 3/5

    NewerPost OlderPost

    Enteryourcomment...

    Commentas: GoogleAccount

    Publish Preview

    Home

    andabendingmomentof40kNm.Tosuitsiteconstrai...

    ECCENTRICALLYLOADEDFOOTINGS.ThefootingsaresodesignedandproportionedthattheC.G.ofthesuperimposedloadcoincideswiththeC.G.ofthebasearea,sothatthef...

    LIVELOADSINABUILDING:onfloors,onroofs.Liveloads,alsocalledassuperimposedloads,consisiofmovingorvariableloads,duetopeopleoroccupants,theirfurniture,

    temporary...

    GrillageFoundationsDescription.Grillagefoundationsconsistofanumberoflayersofbeamsusuallylaidatrightanglestoeachotherandusedtodisperseheavypointload...

    PoweredbyBlogger.

    Blog Archive2015(7)

    2014(29)

    2013(158)

    December(4)

    November(4)

    October(4)

    September(5)

    August(4)

    July(5)

    June(5)

    May(8)

    April(9)

    March(17)

    February(31)

    January(62)

    DesignExample:RectangularBalancedFoundation.

    Balancedfoundations(rectangular,cantilever,tr...

    DesignExample:TiedPortalFrameBase.

    TiedfoundationsDesign.

    TiedandBalancedFoundations.

    TiedandBalancedFoundations.

    DesignJackingRaft

    DesignBuoyancyRaft.

    DesignBeamStripRaft.

    DesignLiddedCellularRaft.

    DesignCellularRaft.

    DesignExample:SlipSandwichRaft.

    DesignSlipSandwichRaft.

    PIPINGFAILURESINSANDCUTS.

    BRACEDCUTS.

  • 6/19/2015 DesignExample:TiedPortalFrameBase.|Builder'sEngineer

    http://www.abuildersengineer.com/2013/01/designexampletiedportalframebase.html 4/5

    ANCHORAGEOFBULKHEADS.

    CrustRaftDesign.

    DesignExample:NominalCrustRaft.

    DesignNominalCrustRaftSemiFlexible

    SemiFexibleRafts:DesignSpanforLocalDepressi...

    BearingPressureDesignSemiFexibleRafts.

    DesignofSemiFexibleRaftLayouts

    DesignPrinciplesSemiFlexibleRafts.

    DesignExample:FloatingSlab.

    SizingoftheSlab.

    DesignDecisionsFloatingSlabs.

    FloatingSlabs(GroundSlabs).

    SizingoftheDesign:ContinuousBeamStrips.

    DesignDecisions:ContinuousBeamStrips.

    RectangularandteebeamContinuousStrips.

    DesignExample5:Padbaseaxialloadplusbendi...

    PadFoundationswithaxialLoadsandBendingMomen...

    DesignExample:ReinforcedPadBase.

    DesignExample3:ReinforcedStripFoundation.

    DesignDecisionsSizingupoftheDesignReinf...

    ReinforcedConcretePadsandStrips.

    UnreinforcedConcreteStrips.

    DesignExample:DeepMassConcretePadBase.

    DesignExample:TrenchFillStripFooting.

    TrenchFillFoundationDesignDecisions.

    TrenchFillStrips.

    UnreinforcedConcretePadsandStrips.

    Foundations:GeneralDesignMethod.

    StructuralDesignofFoundationMembers.

    FoundationDesign:CalculationofAppliedBearing...

    FoundationDesign:DenitionofBearingPressures....

    FOUNDATIONDESIGNCALCULATIONPROCEDURE.

    ExploitationofFoundationStiffnessandResulting...

    SelectFoundation:Questioningtheinformationand...

    GeneralApproachtoChoiceofFoundations.

    Informationcollection/assessmentStructuralCo...

    SelectionoftheAppropriateFoundation.

    GrillageFoundationsDescription.

    RetainingWalls.

    PierandBeamFoundations.

    FloatingGroundFoorSlabs.

    SuspendedGroundFloorSlabs.

  • 6/19/2015 DesignExample:TiedPortalFrameBase.|Builder'sEngineer

    http://www.abuildersengineer.com/2013/01/designexampletiedportalframebase.html 5/5

    PileCapsandGroundBeams.

    AnchorBlocksDescription.

    AnchorPilesDescription.

    SteelPilesDescription.

    TimberPilesDescription.

    2012(304)

    Builder'sEngineer|BasedontheDesignbyTricksCollection|UnlimitedEntertainmentlikeTVShowsandMoviescollections


Tied Shoe Handbook

Tied in Knots

Tied Pubs Final Report

TIED: A Cluster of One TIED: Trial Integration Environment DETER built on

New Orleans Saints Indoor Practice Facility. Rigid Frame with Horizontal Base Rxns Tied Arch

Physics by example_ 200 problems and solutions.pdf - … by example_ 200 problems and solutions.pdf - DigiSec

Chicago Tied House History

(Former) Schlitz Brewery-Tied House · wood-frame interior structure and a flat roof. Rectangular in plan, the tied houses typically measure 25’ wide with depths ranging from 75’

YARD LINE SIDE LINE WOOD FRAME CONSTRUCTION (600 sq. ft. or less)* WOOD FRAME CONSTRUCTION (601 sq. ft. and over)* must be tied into existing storm sewer. No garage shall be over fifteen

Second Grade AMC Professional Development Day 2. Introduction/Opening Critical Learning Phases Tied to CCSS and Investigations Tens Frame Assessment

Tied-Arch Bridges - Steelconstruction

Grid-Tied System Sizing

Tied-house Law Update

Physics by example_ 200 problems and solutions

TADITIONAL EOPEAN SIENA SOFA · TADITIONAL EOPEAN SIENA SOFA Standard Features Frame Kiln dried timbers and structural plywood Seat No sag springs and hand tied sprung edge Back No

Buckling design of steel tied-arch bridges - …vahabonline.com/.../03/Buckling-design-of-steel-tied-arch-bridges...Buckling design of steel tied-arch bridges Hans De Backer⁎, Amelie

Example_ Configuring a Policy-Based VPN - Technical Documentation - Support - Juniper Networks

History textbooks, racism and the critique of Eurocentrism ... textbooks... · Eurocentrism is tied to the modern configuration of ÔraceÕ and racism, it produces a frame of interpretation

Interaction Diagram - Tied Reinforced Concrete Column · Version: June-6-2017 Interaction Diagram - Tied Reinforced Concrete Column Develop an interaction diagram for the square tied

TK-FUJIKIN Profile.pdf · RG1 Tied PRG1 Tied PRG2 Miniature MRG3 Block BRG3 High Flow HFRG3 High Flow HFRG2 RG2 Gas Cabinet / BSGS Pressure RG RG1 RG2 Tied PRG1 Tied PRG2 MRG4-1.5

MONO- AND THREE-PHASE GRID-TIED SOLAR INVERTER … · grid-tied solar inverter limited product warranty. ... limited product warranty for grid-tied solar inverters ... fault instruction

TIED: A Cluster of One

From Tied Movers to Tied Stayers: Changes in Family

What is a Grid-Tied Solar System? Advantages. Grid-Tied Solar Kits

All Tied Up - EY

Tongue-Tied America

10KW Grid-Tied Inverter User Manual - GB Synergygbsynergy.co.za/micro/wp-content/uploads/2014/10/10kw-Grid-Tied...10KW Grid-Tied Inverter User Manual . Included ... circuit breaker

Interaction Diagram - Tied Reinforced Concrete … June-12-2017 Interaction Diagram - Tied Reinforced Concrete Column Develop an interaction diagram for the square tied concrete column

Tahmid's Blog_ Using the SG3525 PWM Controller - Explanation and Example_ Circuit Diagram _ Schematic of Push-Pull Converter

All tied up: Tied staying and tied migration within …...All tied up: Tied staying and tied migration within the United States, 1997 to 2007 Thomas J. Cooke1 Abstract BACKGROUND The

Comparative Evaluation - Option #1 & Option #2wcec.wm.com/documents/OpenHouses/OH3/BOARDS_Pages_25-44.pdfCriteria Ranking: Tied for 2 nd Tied for 1 st Tied for 1 st Tied for 2 nd Criteria

High frequency&efficiency Series Mode … distributed grid tied micro inverter of The 1000W 1200W ... grid-tied micro inverter: 3.3 Circuit architecture ... diagram Grid-Tied Micro

Revision Notes By 3a4. Title of Topic: Key Terms On Neolithic/Meoslithic! 1.Houses : circular, wooden frame tied at the bottom, covered with grass or

Generating Polyphonic Music Using Tied Parallel …ddjohnson/tied-parallel/johnson2017tied... · Generating Polyphonic Music Using Tied Parallel Networks Daniel D. Johnson Harvey

Interaction Diagram - Tied Reinforced Concrete Column ... · Interaction Diagram - Tied Reinforced Concrete Column Develop an interaction diagram for the square tied concrete column