• 1 Page HOM5one_waypost
    HOM5one_waypost

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Homework #5 Spring 2009 Name:_ A parking garage is to be designed using two-span cast-in-place post-tensioned normal weight concrete Tbeams, as shown below, spaced at 26.9 feet on centers. The monolithic slab is 7 inches in overall depth, and

  • 1 Page HOM6-Flex
    HOM6-Flex

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework #6 Spring 2005 Due: 11 March 2005 Name: _ _ I. The double-T roof beam shown below is to be constructed using lightweight concrete having a density of 120 pcf with compressive strength, f'c of 5000 psi. At the time of transfer f'ci wi

  • 1 Page HOM4
    HOM4

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework #4 Spring 2005 Due: February 23,2005 Name: _ _ Calculate the M vs response for the cross section shown below Determine the following values of the M vs response and plot. a) Initial stage, applied external moment, M, is zero. Effe

  • 2 Pages HOM2
    HOM2

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Homework #2 Spring 2005 Due: 1/31/05 Name:_ 1. The normal weight concrete simple span beam shown below is prestressed with an initial prestress force, Pi of 150 kips and tendon eccentricities as shown (the eccentricity is considered positive i

  • 2 Pages Mathcad - hom2-pro1
    Mathcad - Hom2-pro1

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Spring 2005 Homework #2 Solution Julio Ramirez 1. A rectangular pretensioned beam of width b = 10 inches and a total depth h = 20 inches is pretensioned using a single drape strand profile having eccentricity e = +3.3 in. at midspan, and 0 in.

  • 2 Pages ce572-outline-SP061
    Ce572-outline-SP061

    School: Purdue

    Course: Prestressed Concrete Design

    S C H O O L O F C I V I L E N G I N E P u r d u e U n i v e r s i t y CE 572 Prestressed Concrete Design Catalog Description E R I N G This course covers basic understanding of the behavior of prestressed concrete and the design of staticall

  • 4 Pages hom3-4strands
    Hom3-4strands

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Spring 2006 Homework#3 Solution Julio Ramirez An un-topped12 in. pretensioned hollow core beam is part of a floor system and spans simply supported 36 ft in a hotel corridor area. The service live load is 100 psf, and the additional dead load i

  • 1 Page PrestressForceLevels
    PrestressForceLevels

    School: Purdue

    Course: Prestressed Concrete Design

    Prestress Force Levels Po = Jacking Force Anchor Slip Friction Pi = Initial (Transfer) Force Creep Shrinkage Pe = Effective Force Relaxation Elastic Shortening

  • 4 Pages ce572-hom4-flexsol
    Ce572-hom4-flexsol

    School: Purdue

    Course: Prestressed Concrete Design

    CE572 Homework #4, Spring 2006 I. The double-T roof beam shown below is to be constructed using lightweight concrete having a density of 120 pcf with compressive strength, f'c of 5000 psi. At the time of transfer f'ci will be 4000 psi. The member i

  • 4 Pages hom3-4strands1
    Hom3-4strands1

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Spring 2006 Homework#3 Solution Julio Ramirez An un-topped12 in. pretensioned hollow core beam is part of a floor system and spans simply supported 36 ft in a hotel corridor area. The service live load is 100 psf, and the additional dead load i

  • 3 Pages hom3-6strands
    Hom3-6strands

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Spring 2006 Homework#3 Part a) Solution Julio Ramirez An un-topped12 in. pretensioned hollow core beam part of a floor system spans simply supported 36 ft in a hotel corridor area. The service live load is 100 psf, and the additional dead load

  • 1 Page HOM4FlexShearCompDefle
    HOM4FlexShearCompDefle

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework#4 Spring 2009 Name: _ 1. (4) A lightweight concrete double-T pretensioned roof beam is used on a simply supported 74-ft span and carries a superimposed service live load of 35 psf and an additional dead load of 25 psf. It also carrie

  • 1 Page Hom6tendonlay
    Hom6tendonlay

    School: Purdue

    Course: Prestressed Concrete Design

    Prepared by Julio A. Ramirez 03/30/2005 Page 1 Prestress f'c (psi) = L (ft) = SSL k/ft = x-feet 0 10 20 22 25 Tendon 5000 50 0.2 Mg (in-k) 0 415.992 623.988 640.6277 649.9875 Centroid CE572 f'ci (psi) = Self k/ft = Mss (in-k) x-ft 0 480 720 739.2

  • 1 Page HOM2flexstress
    HOM2flexstress

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Homework #2 Spring 2006 Name:_ 1. A rectangular post-tensioned beam of width b = 11 inches and a total depth h = 28 inches is post-tensioned using a single parabolic tendon having eccentricity e = 7.8 inches at midspan, and 0 inches at the si

  • 1 Page Hom7Pro1
    Hom7Pro1

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Shear Parabolic Vcw- 318-05 ` (ft) 0.00 7.75 35.00 Tendon d (in) 129.60 129.60 140.40 Post-ten Pe (kips) 7593.30 7593.30 7593.30 Simply Vp (kips) 1052.80 936.24 526.40 Supported Homwk 7 Prob. 1 fpc (kips) 0.41 0.41 0.41 Vcw (kips) 3356.47 CL o

  • 2 Pages ce572_Sp09_outline
    Ce572_Sp09_outline

    School: Purdue

    Course: Prestressed Concrete Design

    S C H O O L O F C I V I L E N G I N E P u r d u e U n i v e r s i t y E R I N G CE 572 Prestressed Concrete Design Catalog Description This course covers basic understanding of the behavior of prestressed concrete and the design of statically

  • 9 Pages FlexureBehavior-318-021
    FlexureBehavior-318-021

    School: Purdue

    Course: Prestressed Concrete Design

    Flexure Behavior 318-02 Ce 572 10.3.2 BALANCED STRAIN CONDITION 0.003 fy /Es (or 0.002) 10.3.3-4 STRAIN CONDITIONS c = 0.003 dt c c 0.003 c 0.003 t 0.002 CompressionControlled c 0.6d t 0.002 < t < 0.005 t 0.005 Transition TensionContr

  • 1 Page HOM3_ShearDesPretBeam
    HOM3_ShearDesPretBeam

    School: Purdue

    Course: Prestressed Concrete Design

    Homework #3 Spring 09 ce572 Team No.:_ The section is prestressed with 10-1/2 inch diameter lo-lax Grade 270 strands. The effective stress in the strands after all losses is 0.57fpu. Calculate the shear strength at h/2, 2h, 4h and 6h from the support

  • 1 Page Hom6-Magnel
    Hom6-Magnel

    School: Purdue

    Course: Prestressed Concrete Design

    Prepared by ramirez 03/30/2005 Page 1 Magnel Section Ac =(in2) St = (in3) Sb= (in3) f'ci= (ksi) f'c= (ksi) First Eq. 1 Pi (kips) = Eq. 2 Pi (kips) = Eq. 3 Pi (kips) = Eq. 4 Pi (kips) = Eq. 4 Pi (kips) = Diagram Propert. 208 1092.647 473.2484 4 5 s

  • 5 Pages Ex.24.3-.4
    Ex.24.3-.4

    School: Purdue

    Course: Prestressed Concrete Design

    Example 24.3Flexural Strength of Prestressed Member Using Approximate Value for fps Calculate the nominal moment strength of the prestressed member shown. f = 5000 psi c fpu = 270,000 psi (low-relaxation strands; fpy = 0.90fpu) Calculations and Di

  • 1 Page HOM1
    HOM1

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework #1 Spring 2009 Due: January 12, 2009 Names: _ Team: _ Survey the parking-structure in Figure 1 located on Northwestern Avenue. Figure 1. Purdue University Visitors Center and Parking Garage Identify the following items and provide

  • 1 Page FlexureStressExample
    FlexureStressExample

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Flexural Stresses Example Spring 2009 1. The normal weight concrete simple span beam shown below is prestressed with an initial prestress force, Pi of 150 kips and tendon eccentricities as shown (the eccentricity is considered positive if meas

  • 8 Pages DEFLECT_lectnotes
    DEFLECT_lectnotes

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Spring 2009 DEFLECTIONS Effect of Prestress Force: For a typical beam, application of prestress force will produce upward camber. The effect of concrete shrinkage, creep and steel relaxation is gradually to reduce the camber produced by the in

  • 7 Pages Zia_Preston_Scott_Workman
    Zia_Preston_Scott_Workman

    School: Purdue

    Course: Prestressed Concrete Design

  • 21 Pages CE572Introduction_to_Prestressing
    CE572Introduction_to_Prestressing

    School: Purdue

    Course: Prestressed Concrete Design

    Introduction to Prestressing CE 572 Purdue University School of Civil Engineering Julio Ramirez Definition of Prestressing It consists of preloading the structure before application of design loads in such a way so as to improve its general perfor

  • 7 Pages Notes_on_Prestress_Losses
    Notes_on_Prestress_Losses

    School: Purdue

    Course: Prestressed Concrete Design

    Ce 572 Loss of Prestress Loss of prestress is the reduction of tensile stress in prestressing tendons due to shortening of the concrete around the tendons, relaxation of stress within the tendons and other time dependent deformations in the concrete,

  • 2 Pages ExampleStressCheck
    ExampleStressCheck

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Spring 2004 Practice Example Julio Ramirez A rectangular post-tensioned beam of width b = 11 inches and a total depth h = 28 inches is post-tensioned using a single parabolic tendon having eccentricity e = 7.8 inches at midspan, and 0 inches a

  • 9 Pages FlexureBehavior-318-02
    FlexureBehavior-318-02

    School: Purdue

    Course: Prestressed Concrete Design

    Flexure Behavior 318-02 Ce 572 10.3.2 BALANCED STRAIN CONDITION 0.003 fy /Es (or 0.002) 10.3.3-4 STRAIN CONDITIONS ? c ? 0.003 c dt 0.003 c c 0.003 ? t ? 0.002 CompressionControlled c ? 0.6d t 0.002 ? ? t ? 0.005 ? t ? 0.005 Transition Tensi

  • 1 Page TableR1833
    TableR1833

    School: Purdue

    Course: Prestressed Concrete Design

  • 1 Page HOM2_DT_FlexDes
    HOM2_DT_FlexDes

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework #2 Spring 2009 Due: February 4, 2009 Name: _ The double-T roof beam shown below is to be constructed using lightweight concrete having a density of 120 pcf with compressive strength, f'c of 5000 psi. At the time of transfer f'ci will

  • 8 Pages MicrosoftWord-DEFLECT_lectnotes
    MicrosoftWord-DEFLECT_lectnotes

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 e:\deflect\jar/Spring 2005 DEFLECTIONS Effect of Prestress Force: For a typical beam, application of prestress force will produce upward camber. The effect of concrete shrinkage, creep and steel relaxation is gradually to reduce the camber pro

  • 1 Page CE572%20Schedule
    CE572%20Schedule

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Prestressed Concrete Spring 2008 Week 1 Day M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F Date 7-Jan 9-Jan 11-Jan 14-Jan 16-Jan 18-Jan 21-Jan 23-Jan 25-Jan 28-Jan 30-Jan 1-Feb 4-Feb 6-Feb 8-Feb

  • 4 Pages Mathcad-ce572-hom6-flex
    Mathcad-ce572-hom6-flex

    School: Purdue

    Course: Prestressed Concrete Design

    CE572 Homework #6, Spring 2005 I. The double-T roof beam shown below is to be constructed using lightweight concrete having a density of 120 pcf with compressive strength, f'c of 5000 psi. At the time of transfer f'ci will be 4000 psi. The member i

  • 1 Page HOMk7-Deflect
    HOMk7-Deflect

    School: Purdue

    Course: Prestressed Concrete Design

    Ce 572 Deflections Spring 2006 Homework 7 Name:_ The standard double-T section beam is to be used on a simple span of 46 ft. Tendons are draped at midspan, with eccentricity varying as shown in the figure below. The initial prestressing after transfe

  • 1 Page HOM5_losses
    HOM5_losses

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework #5 Spring 2006 Name: _ For the double-T roof beam of Homework #4 designed for 6fc, the section properties are Ac = 208 in2, Ic = 5,944 in4, and yt = 5.44 in. Estimate the losses for a section at midspan.

  • 2 Pages Homw6Shear-Losses
    Homw6Shear-Losses

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework 6 Spring 2006 Due: March 10, 2006 Name: _ 1. Shear(6)- It is proposed to build a new railway bridge across a river valley as a series of simply supported box girders each spanning 140 ft center to center of the bearings. The bearing

  • 7 Pages Flexure_Behavior-318-05
    Flexure_Behavior-318-05

    School: Purdue

    Course: Prestressed Concrete Design

    Flexure Behavior 318-05 Ce 572 10.3.2 BALANCED STRAIN CONDITION 0.003 fy /Es (or 0.002) 10.3.3-4 STRAIN CONDITIONS c = 0.003 dt c c 0.003 c 0.003 t 0.002 CompressionControlled c 0.6d t 0.002 < t < 0.005 t 0.005 Transition TensionContr

  • 1 Page Hom3HollowCoreFlexDes1
    Hom3HollowCoreFlexDes1

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework #3 Due: February 10, 2006 Name: _ An un-topped, 12-inch hollow-core, simply supported, floor system spans 36 ft in a hotel corridor area. The service live load is 100 psf, and the additional dead load is 10 psf. Consider only the dea

  • 2 Pages Lect2_Flex_Stress_Example
    Lect2_Flex_Stress_Example

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Spring 2006 Example of Stress Calculation Julio Ramirez 1. A rectangular pretensioned beam of width b = 10 inches and a total depth h = 20 inches is pretensioned using a single drape strand profile having eccentricity e = +3.3 in. at midspan, a

  • 8 Pages DEFLECT_lectnotes
    DEFLECT_lectnotes

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Spring 2006 DEFLECTIONS Effect of Prestress Force: For a typical beam, application of prestress force will produce upward camber. The effect of concrete shrinkage, creep and steel relaxation is gradually to reduce the camber produced by the in

  • 21 Pages CE572_Introduction_to_Prestressing
    CE572_Introduction_to_Prestressing

    School: Purdue

    Course: Prestressed Concrete Design

    Introduction to Prestressing CE 572 Purdue University School of Civil Engineering Julio Ramirez Definition of Prestressing It consists of preloading the structure before application of design loads in such a way so as to improve its general perfor

  • 1 Page HOM4-DTFlexDes
    HOM4-DTFlexDes

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Homework #4 Spring 2006 Due: February 13, 2006 Name: _ The double-T roof beam shown below is to be constructed using lightweight concrete having a density of 120 pcf with compressive strength, f'c of 5000 psi. At the time of transfer f'ci wil

  • 4 Pages Mathcad-hom3-6strands
    Mathcad-hom3-6strands

    School: Purdue

    Course: Prestressed Concrete Design

    Ce572 Spring 2005 Homework#3 Solution Julio Ramirez An un-topped12 in. pretensioned hollow core beam is part of a floor system and spans simply supported 36 ft in a hotel corridor area. The service live load is 100 psf, and the additional dead load i

  • 2 Pages Mathcad-Losshom7Prob2-sol
    Mathcad-Losshom7Prob2-sol

    School: Purdue

    Course: Prestressed Concrete Design

    Ce 572 Spring 2004 Homework #7 Prob 2 Solution Spring 2005 A pretensioned, prestressed concrete girder is to be built, with the span and cross section shown below. Pretensioning will be applied using 14-1/2 inch diameter Grade 270 strands. Six of the

  • 1 Page hw4mvsclolax-sol
    Hw4mvsclolax-sol

    School: Purdue

    Course: Prestressed Concrete Design

    CE572 HW #4 JAR Spring 2005 Material Properties: f'c= 7 ksi Ec= 4769 ksi Eps= 28000 ksi fpu= 270 ksi fse= 160 ksi Beta1= 0.7 Section Properties Ag= 373 in^2 I= 58890 in^4 S= 3272 in^3 Aps= 2.75 in^2 e= 13.5 in h= 36 in rhop= 0.00485 a) Initial sta

  • 5 Pages ACI318Mn
    ACI318Mn

    School: Purdue

    Course: Prestressed Concrete Design

    Example 24.3Flexural Strength of Prestressed Member Using Approximate Value for fps Calculate the nominal moment strength of the prestressed member shown. f = 5000 psi c fpu = 270,000 psi (low-relaxation strands; fpy = 0.90fpu) Calculations and Di

  • 4 Pages SolutiontoHom5
    SolutiontoHom5

    School: Purdue

    Course: Prestressed Concrete Design

    CE 572 Solution for Homework #5 Spring 2005 Name: _ Due: March 2 Calculate the M vs response for the cross section of the unbonded beam tested by Janney, Hognestad and MacHenry, Ultimate Flexural Strength of Prestressed and Conventionally Reinforc

  • 7 Pages NotesonPrestressLosses
    NotesonPrestressLosses

    School: Purdue

    Course: Prestressed Concrete Design

    1 Ce 572: Loss of Prestress Loss of prestress is the reduction of tensile stress in prestressing tendons due to shortening of the concrete around the tendons, relaxation of stress within the tendons and other time dependent deformations in the concre

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