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HOM5one_waypost
School: Purdue
Course: Prestressed Concrete Design
Ce572 Homework #5 Spring 2009 Name:_ A parking garage is to be designed using twospan castinplace posttensioned normal weight concrete Tbeams, as shown below, spaced at 26.9 feet on centers. The monolithic slab is 7 inches in overall depth, and

HOM6Flex
School: Purdue
Course: Prestressed Concrete Design
CE 572 Homework #6 Spring 2005 Due: 11 March 2005 Name: _ _ I. The doubleT 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

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

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

Mathcad  Hom2pro1
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.

Ce572outlineSP061
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

Hom34strands
School: Purdue
Course: Prestressed Concrete Design
Ce572 Spring 2006 Homework#3 Solution Julio Ramirez An untopped12 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

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

Ce572hom4flexsol
School: Purdue
Course: Prestressed Concrete Design
CE572 Homework #4, Spring 2006 I. The doubleT 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

Hom34strands1
School: Purdue
Course: Prestressed Concrete Design
Ce572 Spring 2006 Homework#3 Solution Julio Ramirez An untopped12 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

Hom36strands
School: Purdue
Course: Prestressed Concrete Design
Ce572 Spring 2006 Homework#3 Part a) Solution Julio Ramirez An untopped12 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

HOM4FlexShearCompDefle
School: Purdue
Course: Prestressed Concrete Design
CE 572 Homework#4 Spring 2009 Name: _ 1. (4) A lightweight concrete doubleT pretensioned roof beam is used on a simply supported 74ft span and carries a superimposed service live load of 35 psf and an additional dead load of 25 psf. It also carrie

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 = xfeet 0 10 20 22 25 Tendon 5000 50 0.2 Mg (ink) 0 415.992 623.988 640.6277 649.9875 Centroid CE572 f'ci (psi) = Self k/ft = Mss (ink) xft 0 480 720 739.2

HOM2flexstress
School: Purdue
Course: Prestressed Concrete Design
Ce572 Homework #2 Spring 2006 Name:_ 1. A rectangular posttensioned beam of width b = 11 inches and a total depth h = 28 inches is posttensioned using a single parabolic tendon having eccentricity e = 7.8 inches at midspan, and 0 inches at the si

Hom7Pro1
School: Purdue
Course: Prestressed Concrete Design
CE 572 Shear Parabolic Vcw 31805 ` (ft) 0.00 7.75 35.00 Tendon d (in) 129.60 129.60 140.40 Postten 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

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

FlexureBehavior318021
School: Purdue
Course: Prestressed Concrete Design
Flexure Behavior 31802 Ce 572 10.3.2 BALANCED STRAIN CONDITION 0.003 fy /Es (or 0.002) 10.3.34 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

HOM3_ShearDesPretBeam
School: Purdue
Course: Prestressed Concrete Design
Homework #3 Spring 09 ce572 Team No.:_ The section is prestressed with 101/2 inch diameter lolax 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

Hom6Magnel
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

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 (lowrelaxation strands; fpy = 0.90fpu) Calculations and Di

HOM1
School: Purdue
Course: Prestressed Concrete Design
CE 572 Homework #1 Spring 2009 Due: January 12, 2009 Names: _ Team: _ Survey the parkingstructure in Figure 1 located on Northwestern Avenue. Figure 1. Purdue University Visitors Center and Parking Garage Identify the following items and provide

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

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

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

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,

ExampleStressCheck
School: Purdue
Course: Prestressed Concrete Design
Ce572 Spring 2004 Practice Example Julio Ramirez A rectangular posttensioned beam of width b = 11 inches and a total depth h = 28 inches is posttensioned using a single parabolic tendon having eccentricity e = 7.8 inches at midspan, and 0 inches a

FlexureBehavior31802
School: Purdue
Course: Prestressed Concrete Design
Flexure Behavior 31802 Ce 572 10.3.2 BALANCED STRAIN CONDITION 0.003 fy /Es (or 0.002) 10.3.34 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

HOM2_DT_FlexDes
School: Purdue
Course: Prestressed Concrete Design
CE 572 Homework #2 Spring 2009 Due: February 4, 2009 Name: _ The doubleT 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

MicrosoftWordDEFLECT_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

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 7Jan 9Jan 11Jan 14Jan 16Jan 18Jan 21Jan 23Jan 25Jan 28Jan 30Jan 1Feb 4Feb 6Feb 8Feb

Mathcadce572hom6flex
School: Purdue
Course: Prestressed Concrete Design
CE572 Homework #6, Spring 2005 I. The doubleT 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

HOMk7Deflect
School: Purdue
Course: Prestressed Concrete Design
Ce 572 Deflections Spring 2006 Homework 7 Name:_ The standard doubleT 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

HOM5_losses
School: Purdue
Course: Prestressed Concrete Design
CE 572 Homework #5 Spring 2006 Name: _ For the doubleT 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.

Homw6ShearLosses
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

Flexure_Behavior31805
School: Purdue
Course: Prestressed Concrete Design
Flexure Behavior 31805 Ce 572 10.3.2 BALANCED STRAIN CONDITION 0.003 fy /Es (or 0.002) 10.3.34 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

Hom3HollowCoreFlexDes1
School: Purdue
Course: Prestressed Concrete Design
CE 572 Homework #3 Due: February 10, 2006 Name: _ An untopped, 12inch hollowcore, 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

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

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

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

HOM4DTFlexDes
School: Purdue
Course: Prestressed Concrete Design
CE 572 Homework #4 Spring 2006 Due: February 13, 2006 Name: _ The doubleT 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

Mathcadhom36strands
School: Purdue
Course: Prestressed Concrete Design
Ce572 Spring 2005 Homework#3 Solution Julio Ramirez An untopped12 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

MathcadLosshom7Prob2sol
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 141/2 inch diameter Grade 270 strands. Six of the

Hw4mvsclolaxsol
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

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 (lowrelaxation strands; fpy = 0.90fpu) Calculations and Di

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

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