pile design guide
TRANSCRIPT
-
7/29/2019 Pile Design Guide
1/46
PRESTRESSED PILI
TECHNICAL DETAILS AND SAMPLE CALCULATIONS
-
7/29/2019 Pile Design Guide
2/46
Prestressed Piling
Prestressed concrete piling are vital elements in the foundaons of buildings, bridges and marine structures
throughout the world. They vary in size from 10 in. (254 mm)
square piles used in building foundaons to the 66 in. (1676
mm) diameter cylinder piles used in marine structures
and bridges. Many areas of North America have poor soilcondions requiring pile foundaons for even relavely light
structures. In such areas, prestressed concrete piling have
come to be the usual method of construcon, having been
proven the logical choice of materials where permanence,
durability and economy must be considered. Heavy marine
structures oen rely on prestressed concrete piling driven
through deep water or through deep layers of unsuitable
material for their support. Prestressed concrete piling can
be designed to safely support these heavy loads as well as
lateral loads caused by wind, waves and earthquakes. In marine environments
these piles can resist corrosion caused by salt water and by thousands of cycles
of weng and drying.1
The following pages contain the
specicaons and service load
interacon diagrams for the majority
of the standard pile sizes for Heldenfels
Enterprises, Inc. This informaon is
to be used to assist engineers in the
design of their projects. This manual is
not intended to replace the necessityof a profession engineered design.
1 Recommended Pracce for Design, Manufacture and Installaon of Prestressed Concrete Piling, PCI Commiee on Prestressed Concrete Piling, Mar-Apr 1993
-
7/29/2019 Pile Design Guide
3/46
-
7/29/2019 Pile Design Guide
4/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
200
100
0
100
200
300
400
500
0.0 10.0 20.0 30.0 40.0 50.0 60.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 12 " x 12 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
6000 psi Size=
4000 psi Qty.= 4
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
200
100
0
100
200
300
400
500
0.0 10.0 20.0 30.0 40.0 50.0 60.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
6/9/2010BY SHEET
cK Structural 12x12A
5700IH 35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 12"x12"Pile,TypeASTANDARD PILING
-
7/29/2019 Pile Design Guide
5/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 100 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 12 inches
b= 12 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 142 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 4
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 6000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,463,151 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
6/9/2010BY SHEET
cK Structural 12x12A - info.
5700I H35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
Engineering Department 12"x12"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
6/46
-
7/29/2019 Pile Design Guide
7/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 150 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 12 inches
b= 12 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 142 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 8
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 7000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,820,754 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
6/9/2010BY SHEET
cK Structural 12x12B - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 12"x12"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
8/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
200
100
0
100
200
300
400
500
0.0 10.0 20.0 30.0 40.0 50.0 60.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 12 " x 12 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
7000 psi Size=
4000 psi Qty.= 8
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
200
100
0
100
200
300
400
500
0.0 10.0 20.0 30.0 40.0 50.0 60.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
6/9/2010BY SHEET
cK Structural 12x12B
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 12"x12"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
9/46
-
7/29/2019 Pile Design Guide
10/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 150 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 14 inches
b= 14 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 194 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 4
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 6000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,463,151 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
6/9/2010BY SHEET
cK Structural 14x14A - info.
5700I H35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
Engineering Department 14"x14"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
11/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
200
100
0
100
200
300
400
500
600
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 14 " x 14 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
6000 psi Size=
4000 psi Qty.= 4
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
200
100
0
100
200
300
400
500
600
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
6/9/2010BY SHEET
cK Structural 14x14A
5700IH 35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 14"x14"Pile,TypeASTANDARD PILING
-
7/29/2019 Pile Design Guide
12/46
-
7/29/2019 Pile Design Guide
13/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 250 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 14 inches
b= 14 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 194 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 8
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 7000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,820,754 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
6/9/2010BY SHEET
cK Structural 14x14B - info.
5700I H35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
Engineering Department 14"x14"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
14/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
300
200
100
0
100
200
300
400
500
600
700
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 14 " x 14 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
7000 psi Size=
4000 psi Qty.= 8
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
300
200
100
0
100
200
300
400
500
600
700
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
6/9/2010BY SHEET
cK Structural 14x14B
5700IH 35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 14"x14"Pile,TypeBSTANDARD PILING
-
7/29/2019 Pile Design Guide
15/46
-
7/29/2019 Pile Design Guide
16/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 250 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 16 inches
b= 16 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 254 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 8
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 5000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,074,281 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 16x16A - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
17/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
300
200
100
0
100
200
300
400
500
600
0.0 20.0 40.0 60.0 80.0 100.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 16 " x 16 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
5000 psi Size=
4000 psi Qty.= 8
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
300
200
100
0
100
200
300
400
500
600
0.0 20.0 40.0 60.0 80.0 100.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 16x16A
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
18/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 400 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 16 inches
b= 16 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 254 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 12
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 7000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,820,754 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 16x16B - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
19/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
300
200
100
0
100
200
300
400
500
600
700
800
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 16 " x 16 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
7000 psi Size=
4000 psi Qty.= 12
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
300
200
100
0
100
200
300
400
500
600
700
800
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 16x16B
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
20/46
-
7/29/2019 Pile Design Guide
21/46
-
7/29/2019 Pile Design Guide
22/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 400 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 18 inches
b= 18 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 332 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 10
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 5000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,074,281 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 18x18A - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 18"x18"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
23/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
300
200
100
0
100
200
300
400
500
600
700
800
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 18 " x 18 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
5000 psi Size=
4000 psi Qty.= 10
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
300
200
100
0
100
200
300
400
500
600
700
800
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 18x18A
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 18"x18"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
24/46
-
7/29/2019 Pile Design Guide
25/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 575 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 18 inches
b= 18 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 332 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 12
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 7000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,820,754 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 18x18B - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 18"x18"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
26/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
400
200
0
200
400
600
800
1,000
1,200
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 200.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 18 " x 18 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
7000 psi Size=
4000 psi Qty.= 12
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
400
200
0
200
400
600
800
1,000
1,200
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 200.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 18x18B
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 18"x18"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
27/46
-
7/29/2019 Pile Design Guide
28/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 500 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 20 inches
b= 20 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 398 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 16
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 6000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,463,151 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 20x20A - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 20"x20"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
29/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
400
200
0
200
400
600
800
1,000
1,200
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 200.0 220.0 240.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 20 " x 20 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
6000 psi Size=
4000 psi Qty.= 16
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
400
200
0
200
400
600
800
1,000
1,200
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 200.0 220.0 240.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 20x20A
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 20"x20"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
30/46
-
7/29/2019 Pile Design Guide
31/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 800 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 20 inches
b= 20 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 398 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 16
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 8000 psi(28dayConcreteCompressiveStrength)
f'ci= 4500 psi(RequiredConcreteReleaseStrength)
Ec= 5,153,603 psi(concretemodulusofelasticityat28days)
Eci= 3,865,202 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 20x20B - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 20"x20"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
32/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
400
200
0
200
400
600
800
1,000
1,200
1,400
1,600
0.0 40.0 80.0 120.0 160.0 200.0 240.0 280.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 20 " x 20 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
8000 psi Size=
4500 psi Qty.= 16
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
400
200
0
200
400
600
800
1,000
1,200
1,400
1,600
0.0 40.0 80.0 120.0 160.0 200.0 240.0 280.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 20x20B
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 20"x20"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
33/46
-
7/29/2019 Pile Design Guide
34/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 800 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 24 inches
b= 24 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 574 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 20
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 6000 psi(28dayConcreteCompressiveStrength)
f'ci= 4000 psi(RequiredConcreteReleaseStrength)
Ec= 4,463,151 psi(concretemodulusofelasticityat28days)
Eci= 3,644,147 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 24x24A - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 24"x24"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
35/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
600
400
200
0
200
400
600
800
1,000
1,200
1,400
1,600
0.0 40.0 80.0 120.0 160.0 200.0 240.0 280.0 320.0 360.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 24 " x 24 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
6000 psi Size=
4000 psi Qty.= 20
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
600
400
200
0
200
400
600
800
1,000
1,200
1,400
1,600
0.0 40.0 80.0 120.0 160.0 200.0 240.0 280.0 320.0 360.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 24x24A
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 24"x24"Pile,TypeASTANDARDPILING
-
7/29/2019 Pile Design Guide
36/46
-
7/29/2019 Pile Design Guide
37/46
DesignCriteria
1)ServiceLoadDesign.
2)Allowable
Compressive
Stress
=0.45f'c
for
SUSTAINED
LOADS.
3)AllowableTensionStress=0forSUSTAINEDLOADS.
4)ForTEMPORARYLOADS,AllowableCompressiveStress=0.60f'c.
5)ForTEMPORARYLOADS,AllowableTensionStress=0.
6)Assumeasustainedcompressionserviceloadequalto: 1200 kips.
7)UsePCImethodforestimatingprestresslosses.
8)BendingisaboutprincipleaxesANDonlyoneaxisatatime.
9)Slendernessisnotconsidered.
10)Ultimatecapacitymustbecheckedtoensuretherequiredfactorof
safetyisachievedinaccordancewithACI318.
DesignInput
SectionSize:
h= 24 inches
b= 24 inches
SectionArea(accountingforchamfers,radii,etc.):
Ag= 574 squareinches
Precast/PrestressedPiling:DesignCriteriaandInput
PrestressingStrand:
Type= 270 ksi,Lolax
Size=
1/2"(std.)
Qty.= 20
Area= 0.153 squareinchesperstrand
Pull= 75% (initial)
Concrete:
wc= 145 pcf(concreteweight)
f'c= 8000 psi(28dayConcreteCompressiveStrength)
f'ci= 4500 psi(RequiredConcreteReleaseStrength)
Ec= 5,153,603 psi(concretemodulusofelasticityat28days)
Eci= 3,865,202 psi(concretemodulusofelasticityattransferofprestress)
DATE
2/12/2010BY SHEET
cK Structural 24x24B - info.
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.heldenfel s.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 24"x24"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
38/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
600
200
200
600
1,000
1,400
1,800
2,200
0.0 40.0 80.0 120.0 160.0 200.0 240.0 280.0 320.0 360.0 400.0 440.0 480.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 24 " x 24 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
8000 psi Size=
4500 psi Qty.= 20
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
600
200
200
600
1,000
1,400
1,800
2,200
0.0 40.0 80.0 120.0 160.0 200.0 240.0 280.0 320.0 360.0 400.0 440.0 480.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 24x24B
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 24"x24"Pile,TypeBSTANDARDPILING
-
7/29/2019 Pile Design Guide
39/46
-
7/29/2019 Pile Design Guide
40/46
Sample Calculations
-
7/29/2019 Pile Design Guide
41/46
Precast/PrestressedPiling:PointsforServiceLoadInteractionDiagram SustainedLoads
EffectiveForceinStrand,Feff
Feff= 24,729 lbs
EffectivePrestressinPile, eff
fpc = 779 psi
Point1 UpperBoundary(CompressionOnly,NoBending M1=0)
P1/A+M1/S+fpc=0.45f'c
A= 254 squareinches
M1= 0
S= 683 inches^3
P1= 373,666 lbs
Point2 CompressionwithMinimumEccentricity(5%)
P2/A+M2/S+fpc=0.45f'c
emin= 0.80 (minimumeccentricity)
M2= 0.80 P lb*inches
P2= 287,955 lbs
M2= 19.2 kip*feet
Point3 CrossoverFromCompressiontoTensionControls
PartA: P3/A+M3/S+fpc=0.45f'c
PartB: P3/A M3/S+fpc=0 OR P3=A[(M/S) fpc]
RewritePartA: A[(M3/S) fpc]/A+M3/S+fpc=0.45f'c
SolveforM3:
M3= 768,000 kip*inches
M3= 64.0 kip*feet
SolveforP3:
P3=A[(M3/S) fpc]
P3= 87,916 lbs
Point4 TensionControlsandM=0
P4/A 0/S+fpc=0
P4= 197,834 lbs
DATE
2/12/2010BY SHEET
cK Structural 16x16A_02
5700I H35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeASTANDARDPILING
Sample Calculations
-
7/29/2019 Pile Design Guide
42/46
Precast/PrestressedPiling:PointsforServiceLoadInteractionDiagram Sustained+TemporaryLoads
EffectiveForceinStrand,Feff
Feff= 24,729 lbs
EffectivePrestressinPile, eff
eff= 779 psi
Point1 UpperBoundary(CompressionOnly,NoBending)
P1/A+M1/S+fpc=0.60f'c
A= 254 squareinches
M1= 0
S= 683 inches^3
P1= 564,166 lbs
Point2 CompressionwithMinimumEccentricity(5%)
P2/A+M2/S+fpc=0.60f'c
emin= 0.80 (minimumeccentricity)
M2= 0.80 P lb*inches
P2= 434,758 lbs
M2= 29.0 kip*feet
Point3 CrossoverFromCompressiontoTensionControls
PartA: P3/A+M3/S+fpc=0.60f'c
PartB: P3/A M3/S+fpc=0 OR P3=A[(M/S) fpc]
RewritePartA: A[(M3/S) fpc]/A+M3/S+fpc=0.60f'c
SolveforM3:
M3= 1,024,000 kip*inches
M3= 85.3 kip*feet
SolveforP3:
P3=A[(M3/S) fpc]
P3= 183,166 lbs
Point4 TensionControlsandM=0
P4/A 0/S+fpc=0
P4= 197,834 lbs
DATE
2/12/2010BY SHEET
cK Structural 16x16A_03
5700I H35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeASTANDARDPILING
Sample Calculations
-
7/29/2019 Pile Design Guide
43/46
DiagramPoints Sustained+Temp.Loads
P1= 373,666 lbs P1= 564,166 lbs
M1=
0.0 kip*feet M1=
0.0 kip*feet
P2= 287,955 lbs P2= 434,758 lbs
M2= 19.2 kip*feet M2= 29.0 kip*feet
P3= 87,916 lbs P3= 183,166 lbs
M3= 64.0 kip*feet M3= 85.3 kip*feet
P4= 197,834 lbs P4= 197,834 lbs
M4= 0.0 kip*feet M4= 0.0 kip*feet
Standard Building Code Equation for Maximum Axial Loa
Pmax= (0.33f'c 0.27fpc)Ag
Pmax= 365,685 lbs
Precast/PrestressedPiling:PointsforServiceLoadInteractionDiagram
DiagramPoints SustainedLoads
DATE
2/12/2010BY SHEET
cK Structural 16x16A_04
5700IH 35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeASTANDARD PILING
Sample Calculations
-
7/29/2019 Pile Design Guide
44/46
Precast/PrestressedPiling:ServiceLoadInteractionDiagram
300
200
100
0
100
200
300
400
500
600
0.0 20.0 40.0 60.0 80.0 100.0
Serv
iceAxialLoad
(kips)
ServiceBendin Moment ki *feet
ServiceLoadInteractionDiagram
PileSize= 16 " x 16 "PrestressingStrand
NormalWeight Type= 270 ksi,Lolax
5000 psi Size=
4000 psi Qty.= 8
Area= 0.153 in2
Pull= 75%
Concrete
1/2"(std.)
300
200
100
0
100
200
300
400
500
600
0.0 20.0 40.0 60.0 80.0 100.0
Serv
iceAxialLoad
(kips)
ServiceBendingMoment(kip*feet)
ServiceLoadInteractionDiagram
DATE
2/12/2010BY SHEET
cK Structural 16x16A
5700IH35South,SanMarcos,TX 78666,phone,512.396.2376,www.hel denfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeASTANDARDPILING
Sample Calculations
-
7/29/2019 Pile Design Guide
45/46
PCI6thEd.Handbook4.7.3
PrestressLosses
TL=ES+CR+SH+RE TL=TotalLosses(psi)
PCIEq.4.7.3.1 ES=ElasticShortening(psi)
CR=CreepofConcrete(psi)
SH=ShrinkageofConcrete(psi)
RE=RelaxationofTendons(psi)
ElasticShortening(ES)
ES=KesEpsfcir/Eci Kes = 1.0 forpretensionedmembers
PCIEq.4.7.3.2 Eps= 28,500,000 psi
Eci= 3,644,147 psi
fcir=Kcir*[Pi/Ag
+Pi*e2/Ig]
Mg*e/Ig
(PCI
Eq.
4.7.3.3)
Kcir= 0.9 forpretensionedmembers
Pi= 247,860 lbs
Ag= 254 squareinches
e= 0 inches
Ig= 5,461 inches4
M = 0 ki *inches
Precast/PrestressedPiling:PrestressLossCalculations
fcir= 878 psi
ES= 6,869 psi
Creepof
Concrete
(CR)
CR=Kcr(Eps/Ec)(fcir+fcds) Kcr= 2.0 NormalWeightConcrete
PCIEq.4.7.3.4 Ec= 4,074,281 psi
fcds= Pd/Ag+Msd(e)/Ig PCIEq.4.7.3.5
Msd= 0 kip*inches
fcds= 984 psi
CR= 26,057 psi
ShrinkageofConcrete(SH)
SH=(8.2x106
)KshEps(1 0.06V/S)(100 R.H.)
PCIEq.
4.7.3.6 Ksh= 1.0 forpretensionedmembers
V/S= 4.00 inches
R.H.= 75 % PCIFig.3.10.12
SH= 4,440 psi
DATE
2/12/2010BY SHEET
cK Structural 16x16A_06
5700IH 35South,Sa nMarcos,TX 78666,phone,512.396.2376,www.heldenfels.com
Heldenfels Enterprises, Inc.
EngineeringDepartment 16"x16"Pile,TypeASTANDARDPILING
Sample Calculations
-
7/29/2019 Pile Design Guide
46/46
PCI6thEd.Handbook4.7.3
PrestressLosses(continued)
Relaxationof
Tendons
(RE)
RE=[Kre J(SH+CR+ES)]C Kre= 5,000 for270ksi,LolaxStrand
PCIEq.4.7.3.7 PCITable4.7.3.1
J= 0.040 for270ksi,LolaxStrand
PCITable4.7.3.1
fpi/fpu= 0.75
C= 1.00
SeeTableBelow
RE= 3,505 psi
fpi/fpu CValue
0.80 1.28
0.79 1.22
0.78 1.16
0.77 1.11
0.76 1.05
0.75 1.00
0.74 0.95
Precast/PrestressedPiling:PrestressLossCalculations
For
Lolax
Strand
. .
0.73 0.90
0.72 0.85
0.71 0.800.70 0.75
0.69 0.70
0.68 0.66
0.67 0.61
0.66 0.57
0.65 0.53
0.64 0.49
0.63 0.45
0.62 0.41
0.61 0.37
0.60 0.33
TotalLosses,TL
TL= 40,871 psi
Heldenfels Enterprises, Inc.
Sample Calculations