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Prestressed Concrete Piling Design - Input

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Precast/Prestressed Concrete Inst.

JOB: Piling Spreadsheet Verification Probelm #1 2


200 W. Adams St. #2100 Ph. 312.786.0300 SUBJECT: 24x24 Solid Oct. Pile w / Circular Strand Layout SHEET
Chicago, IL 60606 Fax 312.621.1114 DES. BY: FCH DATE:D OF
Email: info@pci.org Web www.pci.org CHK. BY: ATE: 10

Prestressed Concrete Piling Design - Input


Pile Information:
Use Library Section or Enter Custom Properties

Section Type:
Solid/Hollow:
Pile Size: 31.50 in.
Void Diameter: 22.05 in.
Square Circular Octagonal
Chamfer: in.
Unsupported Length, ℓ = 39.4 ft Unsupported Length of Pile for Slenderness Evaluation
k= 0.70 Effective Length Factor
Applied Sustained Load = 435.9 kips Applied Sustained Load on Pile from Structure

Reinforcement:
Pretensioned Strands:
Diameter of Pretensioned Strands = 0.4375 in. Typically, 0.5 in. dia.
2
Area of Strand, Aps = 0.115 in
Strand Layout = Circular
Number of Strands = 30
Strand Modulus, Eps = 30,457 ksi
Strength of Strand, fpu = 270.0 ksi Stress-Strain Information for 270 ksi only
Fraction of fpu used for Initial Stress = 0.80
Initial Strand Stress, fpo = 216.0 ksi
Mild Reinforcement (Spiral/Ties):
Spiral or Ties = Spiral
Wire or Bar Size = W4.0 W20 enter custom size
Wire or Bar Diameter = 0.226 in. 0.505 enter custom diameter
Minimum Cover to Face of Spiral/Tie = 1.97 in.
Concrete Properties:
Concrete Strength at Transfer, f'ci = 8.70 ksi
Specified Concrete Strength f'c = 11.60 ksi
Concrete Unit Weight, wc = 0.150 kcf
Ambient Relative Humidity, H = 75 % (Used for creep and shrinkage Loss)
Concrete Ultimate Compressive Strain, ecu = 0.004 in./in.
Resistance Factors & Slenderness:
Resistance Factor for Flexure, fFlex = 1.00
Resistance Factor for Compression, fComp = 0.75
Method used for Slenderness Calculations = ACI
EI Multiplier = 1.00 See Manual for further action required.
0
P/S Loss Computation Method:
Loss = Compute
At Release = 10.00 %
At Final = 25.00 %
Strand Type Used in Loss Equations = LR
Service Stresses:
Compression Limit for Sustained+Transient Loads = 7.770 ksi
Compression Limit for Sustained Loads = 5.070 ksi
Tension Limit for Sustained+Transient Loads = -0.537 ksi
Tension Limit for Sustained Loads = -0.268 ksi
C:\Users\shirl\OneDrive\Desktop\Pile design -kosy\[Copy of PCI_PSCPile_Revised_V1_2_15_VP1.xls]Input Version 1.2.15 12/31/2015 © 11-23-2020 19:20

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