making structure more sustainableptsindia.net/downloadble/company/literature/... · c o n t e n t...

MAKING STRUCTURE MORE SUSTAINABLE

Unbonded P-T Smart ProductsI-sects (Void Slab)

C O N T E N TPage No.

Company Profile

C O M P A N Y P R O F I L E

Why PTSI

PTSI is based at Vadodara, Gujarat and is lead by a team of dedicated professionals catering to customer needs with a full range of

With experience of providing Mono-strand Unbonded P-T System in more than 800 diverse buildings across various industries,

provider for any sort of concrete structure.

and monitoring in-place concrete strength.

engineers can widen their horizon to create visionary structures.

Professional Unbonded P-T Design

Supply of Unbonded P-T Design

On-site Services

12

34

TOTAL SOLUTION – Value Driven

QUALITY

TRANSPERANCY

We provide end-to-end

Unbonded P-T System

ISO 9001 QMS compliant company

Dedicated Quality Assurance team for

In-house tools and specialized equipment

Well maintained and calibrated equipment

material and services

In-house proficient P-T design

Services orientedapproach

Openly shared our design criteria and

More than 80%

CUSTOMER FOCUS

Company Profile

05

Mono-Strand Unbonded P-T System

Modified Unbonded P-T System

Key features

Modifications In Existing P-T Floors

I-SECTS (VOIDED SLAB)SYSTEM

Components

Components of P-T System

Encapsulated P-T System

Standard P-T System

Anchor Plate P-T CablePocket Former

End Cap

Pocket Former

Encapsulated Anchor PlatePolyethylene Sheathing

P-T Cable

Mono-strand Unbonded P-T System

12

I-Sects (Void Slab) System

Smart ProductsSMART PRODUCTS

Save TIMESave MONEY

Ensure QUALITY

Notes

Notes

34

NOTES

5

10

24

18

12

26

32

38

22

Key feature : Wide Shallow Beams


18

On-site Photograph

7'-10"31'-9"

43'-4"43'-5"

31'-9"7'-10"

4'-0"

4'-0"

4'-9"

4'-9"

4'-0"

4'-0"4'-0"

4'-0"

4'-9"

4'-9"

4'-0"

4'-0"

8'-0"

9'-6"

8'-0"

8'-0"

9'-6"

8'-0"



3200

A cut-out of 3200 mm x 3200mm was executed in this industrial structure after its construction. The structure is designed for loading of 7 kN/m^2.

A cut-out was required to get an access of above floor of this commercial building

2400

4000

22

3200



When a narrow strip element needs to be designed to take care of heavy loadings, stresses govern the design than the deflections in such case. P-T cable might not generate enough force due to shorter length as anchor seating loss would govern the net overall receivable force of prestressing. This can be resolved to a manageable extent by providing the cable in looped profile. This is how the overall length of cable can be extended in best possible way. The loop configuration also helps to develop better integrity aspects in the member.

It is always difficult to work with non-regular (non-orthogonal) geometries. Especially when the stressing face is not orthogonal with the direction of transfer of prestressing force, it becomes complex situation to arrange the live end anchorages in proper way. To eliminate complexity, angled pocket former can be used. This would make the installation simpler and easier.

U Looped Profile

Angled Pocket-former

2000

(6'-0

")

R = 2000 (6'-0")

4000[ 8'-0" ]

4000[ 8'-0" ]

4000[ 8'-0" ]

PT CABLE

24

COMPANY PROFILE

Introduction

Why PTSI

PTSI is based at Vadodara, Gujarat and is lead by a team of dedicated professionals catering to customer needs with a full range of engineering solutions for concrete construction.

With experience of providing Mono-strand Unbonded P-T System in more than 1550 diverse buildings across various industries, PTSI’s expertise for post-tensioning technology makes it India’s most advanced end-to-end Mono-strand Unbonded P-T System provider for any sort of concrete structure.

In addition to Mono-strand Unbonded P-T System, we provide I-sects System for Voided Slabs and Maturity Sensing System for measuring and monitoring in-place concrete strength.

We help you to enhance your perception towards building with optimum space utilisation. That means the architects and structural engineers can widen their horizon to create visionary structures.

Professional Design

Supply of Material

On-site Services

TOTAL SOLUTION – Value Driven

QUALITY

TRANSPERANCY

Updated design software

Dedicated Quality Assurance team for material as well as on site operations

Committed maintenance team for calibration of equipment

In-house tools and specialized equipment for calibration

Well maintained and calibrated equipment

Service orientedapproach

Design criteria and material specificationsare openly shared

More than 80% customer retention

CUSTOMER FOCUS

Company Profile

05

End-to-end solutionfor Monostrand UnbondedP-T System & Void Slab System

High standard Anchor Platesand Wedges

In-house proficient P-T design

Value-added logistics of materialand services

In-house manufacturingfacility for cable extrusion.Approval from Post-TensioningInstitute, USA is underprocess

PTSI Team

Technical Forte

40%

60%

DESIGNING

1 Production Head1 Production Engineer2 Maintenance Engineer 3 Assembling in-charge

1 Operation Head6 Team Leader40 Site Executives

1 Sales Head5 Managers

36 in Other SupportFunctions

1 Design Head3 Team Leaders10 Design Engineers15 Draughtsman

EXECUTION

SALES & MARKETING SUPPORT

PRODUCTION

TECHNICAL TEAM

BUSINESS SUPPORT TEAM

Workshop with inventory capacity of 800MT P-T

Cable

62,000 Sq. Ft.Manufacturing Facility for

assembling activity

Developed in-house troubleshooting &

retrofitting tools and tackles

Company Profile

06

In-house cable extrusionfacility with capacity

of 500MT

44 sets of HydraulicStressing Assembly

Advanced calibrationequipment for hydraulic

assemblyMechanical EngineersMetallurgical Engineer

Dedicated Technical Team

PROJECT : Tata Consultancy ServicesDeveloper : Roma Builders

(Hiranandani Group)Structural Consultant : Mahimtura ConsultantsArchitect : Design Center (Hiranadani)Location : MumbaiTotal Area : 10,67,100 (Sq. Ft.)

PROJECT : Kalyan MartDeveloper : Shri Kalyan Build Mart Pvt. Ltd.Structural Consultant : VijaytechArchitect : MA ArchitectsLocation : JaipurTotal Area : 3,58,000 (Sq. Ft.)

PROJECT : Sandip Foundation CampusDeveloper : Sandip FoundationStructural Consultant : Mr. Shailesh DhumneArchitect : Mr. Abhoy ShahLocation : NashikTotal Area : 5,00,000 (Sq. Ft.)

PROJECT : Millenium Textile HouseDeveloper : Shanti Residence Pvt. Ltd.Structural Consultant : Mr. Jalil SheikhArchitect : Mr. Sanjay JosshiLocation : SuratTotal Area : 5,07,150 (Sq. Ft.)

PROJECT : NMIMS CampusDeveloper : Shri Vile Parle Kelavani MandalStructural Consultant : PT Gala Consultants Architect : Talati & Panthaky AssociatesLocation : IndoreTotal Area : 3,17,100 (Sq. Ft.)

PROJECT : SRK Diamond FactoryDeveloper : Shri Ramkrishna ExportsStructural Consultant : Mr. Hiren DesaiArchitect : Mr. Snehal Shah (Essteam)Location : SuratTotal Area : 53,230 (Sq. Ft.)

PROJECT : Shivalik ShilpDeveloper : GSS Organisers LLPStructural Consultant : Ducon Consultants Pvt. Ltd.Architect : Sanjay Puri ArchitectsLocation : AhmedabadTotal Area : 6,84,900 (Sq. Ft.)

PROJECT : Ratnaakar Nine SquareDeveloper : NCPL Infracon LLPStructural Consultant : Ducon Consultants Pvt. Ltd.Architect : ADS Architect Pvt. Ltd.Location : AhmedabadTotal Area : 4,40,600 (Sq. Ft.)

PROJECT : Pittie CourtyardDeveloper : Raja Bahadur International Ltd.Structural Consultant : Sterling Engineering Consultancy

Services Pvt. Ltd.Architect : Archgroup InternationalLocation : PuneTotal Area : 1,31,020 (Sq. Ft.)

PROJECT : Signature Gift City

Structural Consultant : Mahimtutra ConsultantsArchitect : Mr. Hafeez ContractorLocation : GandhinagarTotal Area : 3,15,800 (Sq. Ft.)

PROJECT : Commisioner of Police OfficeDeveloper : Gangamai Industries &

Construction Ltd.Structural Consultant : Kasheef and AssociatesArchitect : Nadkarni Mahajan & AssociatesLocation : AurangabadTotal Area : 49,638 (Sq. Ft.)

PROJECT : Mother Care Developer : Orchid DevelopersStructural Consultant : Dimensions Structural DesingersArchitect : Vijay Jethva & AssociateLocation : BhavnagarTotal Area : 81,947 (Sq. Ft.)

PROJECT : Alembic Business ParkDeveloper : Alembic Ltd.Structural Consultant : AADesai Consulting Engineer Architect : Mandviwala & Qutub AssociatesLocation : VadodaraTotal Area : 1,03,700 (Sq. Ft.)

PROJECT : Siyaram Silk MillClient : Siyaram Silk MillStructural Consultant : Mr. Manish Shah (Shilpam) Architect : -Location : DamanTotal Area : 52,025 (Sq. Ft.)

PROJECT : Mittal MallDeveloper : Mittal Dewellers Pvt. LtdStructural Consultant : SACPLArchitect : Hemant Vora & AssociatesLocation : AjmerTotal Area : 79,327 (Sq. Ft.)

PROJECT : Parekh AlluminexClient : Parekh AlluminexStructural Consultant : Mr. Janak BhavsarArchitect : -Location : Vapi Total Area : 42,000 (Sq. Ft.)

PROJECT : Shankeshwar BhavanClient : -Structural Consultant : Zaki AssociatesArchitect : Zaki AssociatesLocation : HyderabadTotal Area : 25,000 (Sq. Ft.)

PROJECT : Apar IndustriesDeveloper : Apar Industries Ltd.Structural Consultant : Mr. Manish Shah (Shilpam) Architect : Mr. Manish Shah (Shilpam) Location : ValsadTotal Area : 13,455 (Sq. Ft.)

PROJECT : HardrockDeveloper : Avantis Enterprise LLPStructural Consultant : JW Consultants LLPArchitect : Sanjay Josshi ArchitectsLocation : SuratTotal Area : 836,440 (Sq. Ft.)

PROJECT : Pixon Energy Ltd.Client : Pixon Energy Ltd. Structural Consultant : Mr. Savan KakadiaArchitect : Mr. Vijay Parekh Location : RajkotTotal Area : 75,000 (Sq. Ft.)

Projects Highlights

Company Profile

08

Developer : Volupia Developers Pvt. Ltd.(Hiranandani Group)

PROJECT : Orrange CountyClient : Sankalp Associates

Architect : Sanjay Josshi & AssociatesLocation : RaipurTotal Area : 77,675 (Sq. Ft.)

Structural Consultant : Mr. Mohan Keskar

PROJECT : Tata Consultancy ServicesDeveloper : Roma Builders

(Hiranandani Group)Structural Consultant : Mahimtura ConsultantsArchitect : Design Center (Hiranadani)Location : MumbaiTotal Area : 10,67,100 (Sq. Ft.)

Members of

Quality Ploicy

Understanding their Needs

Providing Most Appropriate Solutions

Providing Durable Products And Quality Services

Conforming to Relevant Codes and Standards

Continual Improvement In Our Processes

We believe in providing best of services to all the relevant parties to our business activities by,

Membership Category:Post-Tensioning Company

Awards and Accreditations

Indian Construction Industry Awards 2015Awarded as “Sarvottam Construction Technology Service Provider in Unbonded Post Tensioning System” by Builders’ Association of India (BAI) in 2015.

Appreciation for Guinness Book of World RecordsPTSI was accredited by NMRD, Jaipur for the Post-tensioning services rendered for one of their projects – Satsang Hall for Govinddevji Temple. This project was awarded by GUINNESS BOOK OF WORLD RECORDS in 2009 as the WORLD’S LARGEST REINFORCED CEMENT CONCRETE FLAT ROOF WITH A SINGLE SPAN OF 119 FEET.

Indian Achievers Award for Industrial Development 2008Honored with “INDIAN ACHIEVERS AWARD FOR INDUSTRIALDEVELOPMENT” by All India Young Achievers Foundation in 2008.

Company Profile

09

CertificationPost Tension Services (Gujarat) LLP is an ISO 9001: 2015 certified company

MONO-STRAND UNBONDED P-T SYSTEM

MONO-STRAND UNBONDED POST-TENSIONING SYSTEM

Pre-stressed Concrete

PTSI provides Unbonded Post-Tensioning System which is a means of complementing the strength of concrete in compression and overcoming its weakness in resisting tension. Post-Tensioning Systems apply compressive force to the structure through stressing of high strength steel strand with specialized anchorage assemblies. Flexibility of the strand is a major advantage, allowing it to be profiled through the concrete element, counteracting a portion of applied loads to provide an exceptionally efficient structure.

Simple Bending Action in RCC Beams

Effects of Post-Tensioning during Bending Action

Weight (Load)

T

C

Compression (C)

Diagram ofDesign Stress

Tension (T)

Combined Effects Of Stresses

C

T

C

Weight (Load)

P.eZ

PA

+

DESIGN STRESSES

MZ

PRE-COMPRESSION LOAD-BALANCING FINAL STRESSES

+ =C

T

T

C

C

T

C

PA

P.eZ


11

Components of P-T System

Encapsulated P-T System

Standard P-T System

Anchor PlateEnd Cap

P-T CablePocket Former

GreaseCap

Pocket Former

Encapsulated Anchor PlatePolyethylene Sheathing

P-T Cable


12

Technical Specifications7 Wire Unbonded Mono-strand

Anchor Plates

Wedges

Material Specifications

Pre-stressing Steel:(1) Low-Relaxation 7 wire Strand of Class II (Grade

1860) with 12.7mm nominal diameter used in monostrand unbonded post tensioning tendons should conform to the requirements of IS-14268:1995

(2) Sectional steel area of Strand: 98.7mm (3) Yield Load: Not less than 180kN(4) Ultimate Strength: Not less than 1860N/mm

2

2

2

(5) Minimum Breaking Strength: Not less than 183.7kN

(6) Modulus of Elasticity: At least 196,500N/mm (7) Minimum elongation: 3.5% for gage length

of 600mm(8) Relaxation at 1000 hours: Less than 2.5% at

70% Minimum Ultimate Tensile Strength(9) Weight of Bare Strand: More than 0.775kg/m

Grease Coating Specifications:(1) Grease coating should provide protection

against corrosion to the Prestressing steel(6) It should be a compound with appropriate

moisture-displacing and corrosion-inhibiting properties

(7) Minimum weight of the grease coating on the Prestressing strand should not be less than 37.4grams/m for strand of 12.7mm diameter

(8) The coating material shall fill the annular space between the strand and sheathing and shall extend over the entire tendon length

Sheathing Specifications:

(1) Sheathing material: polyethylene orpolypropylene

(2) Minimum Density: 0.94gram/cm(3) Thickness: more than 1.25 mm

3

(4) Appearance: Sheathing should provide a smooth circular outer surface

(5) Coverage: Sheathing shall be continuous over the entire length to be un-bonded, and should prevent intrusion of cement paste or loss of coating

SpecificationsHardness:(A) At Surface: 56 – 65HRC (B) At Core: 40 – 46 HRC

Material Grade:IS:9175 (Part 20)-1986 Grade 20MnCr5

SpecificationsMicrostructure:(A)

Hardness Number: 170 – 230BHN

Graphite Type (As per ASTM A247 Plate I & III)- Form I & II (Spheroid or Nodular type)- Distribution A (Uniform Distribution)- Size: 6 – 8

(B) Nodularity: 90 – 95%(C)(D)

Carbide: Less than 3%Pearlite: 35 – 40%

Mechanical Properties:ASTM A 536 Grade 80-55-06 ORIS 1865 Grade SG 500/7

Material Grade:

(2) It should provide proper lubrication betweenthe strand and sheathing

(3) It should resist flow within anticipated temperature range of exposure

(4) It should provide continuous non-brittle coating at lowest anticipated temperatureof exposure

(5) It should be chemically stable and non-reac-tive with Prestressing steel, reinforcing steel, sheathing material and concrete


13

Working Sequence

Material Procurement

Material Fabrication &Dispatch

Shuttering and Bar Binding

P-T Cable Laying

Extra Top Steel Placement

Concrete Pouring

Stressing

Cutting of Excess Cable& Pocket Filling


14

Visuals


15

General Criteria for the Design of P-T Elements(Ref.: ACI 318M-11, IS 1343 : 2012 and IS 456 : 2000)

Live Load (LL): in kN/m^2 (As per recommendation received from the Structural Consultant)(1)Floor Finish (FF) and Superimposed Dead Load (SDL): in kN/m^2 (As per recommendation received from the Structural Consultant)

(2)

Wall Load: in kN/m^2 (either as per recommendation of the Structural consultant or as per the information available about the wall layout, thickness and unit weight of the material (including plater at outer faces) to be used)

(3)

(4) Service Duct & False Ceiling Load: in kN/m^2 (As per recommendation received from the Structural Consultant)Self-weight of the members: as per the section size (considering unit weight of concrete 25 kN/m^3 as per IS 875 part 1 : 1987)

(5)

Minimum Grade of Concrete (fck): M35 (cube strength) (6)

Grade of Steel for Flexure Design: fe415 or fe500 (as per the recommendation received from the consultant or client during the prelim design)

(7)

Criteria for maximum spacing of P-T cable placement shall be followed as per ACI 318M-11 clause 18.12.4 – eight times slab thickness and 1.5 m whichever is smaller for the distributed cables in P-T slab.

(11)

Anchorage of P-T Cable shall be placed such that the centroid of all the anchorage should fall under middle-third of the depth (kern) of member. Preferably, it shall not be more than 2/3 depth of the member when measured from the bottom.

(14)

The minimum CGS height of tendon at the mid-span shall not be less than 38 mm in case of slab and 55 mm in case of beam measured from the bottom.

(15)

Minimum clear cover to the reinforcement shall be 25 mm for the slab and 40 mm clear from the longitudinal reinforcement for the beams.

(16)

PTSI or PTSG submits moment of resistance (moment capacity) at required sections for P-T beams when the Structural Consultant likes to consider them for the lateral force resisting system. The Consultant shall provide necessary additional passive (non-prestressed) reinforcement to the moment of resistance provided for gravity forces as per the analysis performed at PTSI or PTSG.

(17)

Additional non-prestressed reinforcement provided in slab as per the criteria of ACI 318M-11 clause 18.9 for minimum non-prestressed reinforcement and clause 18.7 for the required non-prestressed reinforcement to achieve required flexural strength for ultimate load combination case. Reinforcement requirement for temperature and shrinkage effects shall be as per IS-1343 : 2012 i.e. 0.15% of total cross section area of the concrete section.

(12)

Grade of Steel for Shear Design: fe415 (8)Level of Pre-stressing (P-T) as per ACI 318M-11 (clause 18.3.3) preferred for P-T slab design: (9)

For Two-Way Flat Plate (without Drop Panels): Class U; Tensile Stress Limit of concrete slab section for “Serviceability Design Requirements as per ACI 318”- less than or equal to 0.5 times square root of equivalent cylindrical strength value of concrete at the mid-span bottom fiber zone.

(9.1)

For Two-Way Flat Slab with Drop Panels: Class U; Tensile Stress Limit of concrete slab section for “Serviceability Design Requirements as per ACI 318”- less than or equal to 0.5 times square root of equivalent cylindrical strength value of concrete.

(9.2)

For One-Way Slabs and Beams: Class T for the Normal Loading Criteria and Class C for heavy loads from floating (stub) column to the Girders as well as for member to design for Fire Tender Loading.

(9.3)

Level of Pre-stressing as per IS-1343 : 2012 (clause 24.2.1): (10)For Two-Way Flat Plate (without Drop Panels): Type-2 with tensile stresses below 3N/mm^2 at the mid-span bottom fiber zone.

(10.1)

For Two-Way Flat Slab with Drop Panels: Type-2 with tensile stresses below 3N/mm^2. (10.2)For One-Way Slabs and Beams: Type-2 for the Normal Loading Criteria, and Type-3 for heavy loads from floating (stub) column to the Girders as well as for member design for Fire Tender Loading.

(10.3)

Note: The criteria 13.1 and 13.2 are same as prescribed in IS-456 : 2000 clause 23.2.a and 23.2.b respectively.

Permissible Long-term Deflection values (considering creep and shrinkage factor based on recommendation of the Structural Consultant) as per clause: 20.3.1 a, b, c of IS-1343 : 2012

(13)

Final Long-term Deflection is calculated as instantaneous deflection (due to self-weight + P-T + SDL + LL) + deflection due to Effects of Creep and Shrinkage corresponding to Sustained Loads i.e. Creep factor times (self-weight + P-T + SDL + 30% of LL). The total deflection should not be more than span/250

(13.1)

The Deflection occurring after erection of partitions and the application of finishes, i.e. the net deflection due to sustained loads occurring after the instantaneous deflection occurred. It is composed of the deflection due to Creep and Shrinkage corresponding to Sustained Loads i.e. Creep factor times (self-weight + PT + SDL + 30% of LL) + instanta-neous deflection due to remaining (70%) LL. The total deflection should not be more than span/350 or 20mm whichev-er is lesser shall be considered.

(13.2)

Total upward deflection should not exceed span/300 unless uniformity of camber between adjacent units can be ensured.

(13.3)


16

Featured ProjectSatsang Hall for Govind Devji Temple, Jaipur

(Structure of Satsang Hall for Govind Devji Temple)

Forming Plan of Satsang Hall, Jaipur

A remarkable project completed in 2009 and serving nicely for the intended purpose. There are total eight columns, all at the perimeter of the 119 feet x 124 feet area. Four at the corners and four at the side edges. There is no internal support. It is a waffle floor configuration with 57 inches deep P-T beams both ways and 8 inches thick P-T slab panels. There was constraint about total height of the hall. The height is not more than parent temple of Lord Krishna, adjacent to the hall, which is of great religious impor-tance. This made it worth applying post-tensioning in the beams and hence the beam depth is reduced to consider-able extent such that it satisfied the prime requirement. Deflection control was one of the major aspects as far as its design was concerned. The structure is awarded by Guinness World Record after its construction.

Recognized by GuinnessWorld Records in 2009

Appreciation Letter forproviding P-T sevices


17

123'

-4"

128'-4"

PTS18" THK.

Key feature : Wide Shallow Beams


18

On-site Photograph

7'-10"

31'-9"

43'-4"

43'-5"

31'-9"

7'-10"

4'-0"4'-0" 4'-0"4'-0"4'-9" 4'-9"

4'-0"4'-0" 4'-0"4'-0"4'-9" 4'-9"

8'-0"9'-6"8'-0"

8'-0"9'-6"8'-0"

A A

Section: A-A

Key feature : Cantilever


1940[6'-4"]

6705[22']

6875[22'-7"]

765 [2'-6"]

6647

PT

B

PT

B

[21'-10"]

5147 [16'-11"]

1360[4'-6"]

3760[12'-4"]

2295[7'-6"]

1800[5'-11"]

2140[7']

4700[15'-5"]

1290[4'-3"]

7200[23'-7"]

4990[16'-4"]

570 [1'-10"]

2314[7'-7"]

32419 [106'-4"]

765 [2'-6"]

6875[22'-7"]

6705[22']

1940[6'-4"]

2855\[9'-4"]

1430[4'-8"]

1965[6'-5"]

6020[19'-9"]

1965[6'-5"]

1430[4'-8"]

2855[9'-4"]

1940[6'-4"]

6705[22']

6875[22'-7"]

765 [2'-6"]

51090[167'-7"]

1601[5'-3"]

5840[19'-2"]

3547 [11'-8"]

10" th.PTS1

10" th.PTS1

10" th.PTS1

7097[23'-3"]

10930 [35'-10"]

7612[25']

4000 [13'-1"]

6930 [22'-9"]

6647 [21'-10"]

8957[29'-5"]

3117[10'-3"]

5840[19'-2"]

1643[5'-5"]

3856 [12'-8"]

8890[29'-2"]

3000[9'-10"]

19

On-site Photographs

RCC Beam

Key feature : IT Park (Drop Panel)


20

41150 [135']

11250[36'-11"]

8650[28'-5"]

11650[38'-3"]

6900[22'-8"]

1500 [4'-11"]

1200 [3'-11"]

131490[431'-5"]

7295[23'-11"]

11300[37'-1"]

11300[37'-1"]

11300[37'-1"]

11300[37'-1"]

7600[24'-11"]

11300[37'-1"]

7600[24'-11"]

11300[37'-1"]

11300[37'-1"]

11300[37'-1"]

11300[37'-1"]

7295[23'-11"]

POUR-132045

[105'-2"]

POUR-221100 [69'-3"]

POUR-319200 [63']

POUR-221100 [69'-3"]

POUR-132045

[105'-2"]

11" th PTS1

11" th PTS1

11" th PTS1

11" th PTS1

11" th PTS1

41150 [135']

On-site Photographs


21

Key feature : Industrial (P-T Beam)

4235[13'-11"]

3791[12'-5"]

9554[31'-4"]

7876[25'-10"]

7910[25'-11"]

2989[9'-10"]

2989[9'-10"]

3539[11'-7"]

325 [1'-1"]

1305 [4'-3"]

44512[146']

200

[8"]

3500

[11'

-6"]

3300

[10'

-10"

]63

50[2

0'-1

0"]

6350

[20'

-10"

]63

50[2

0'-1

0"]

6350

[20'

-10"

]63

50[2

0'-1

0"]

3175

[10'

-5"]

6350

[20'

-10"

]63

50[2

0'-1

0"]

6350

[20'

-10"

]57

00[1

8'-8

"]57

00[1

8'-8

"]57

00[1

8'-8

"]57

00[1

8'-8

"]57

00[1

8'-8

"]57

00[1

8'-8

"]60

70[1

9'-1

1"]

6910

[22'

-8"]

200

[8"]

1115

30

[365

'-11"

]

3175

[10'

-5"]



3200

A cut-out of 3200 mm x 3200mm was executed in this industrial structure after its construction. The structure is designed for loading of 7 kN/m^2.

A cut-out was required to get an access of above floor of this commercial building

2400

4000

22

3200


23


An ‘L’ shape cut-out was required after the construction of the floor of this commercial project.

A cut-out of 4500 mm x 3450 mm was done after construction of this floor in this commercial building.

20'-0"

4'-6'

11'-0"

5'-0'

3450

4500



When a narrow strip element needs to be designed to take care of heavy loadings, stresses govern the design than the deflec-tions in such case. P-T cable might not generate enough force due to shorter length as anchor seating loss would govern the net overall receivable force of prestressing. This can be resolved to a manageable extent by providing the cable in looped profile. This is how the overall length of cable can be extended in best possible way. The loop configuration also helps to develop better integrity aspects in the member.

It is always difficult to work with irregular (non-or-thogonal) geometries. Especially when the stressing face is not orthogonal with the direction of transfer of prestressing force, it becomes complex situation to arrange the live end anchorages in proper way. To eliminate complexity, angled pocket former can be used. This would make the installation simpler and easier.

U Looped Profile

Angled Pocket-former

4000[ 8'-0" ]

4000[ 8'-0" ]

4000[ 8'-0" ]

PT CABLE

24


25


Generally pour-strips are provided for two purposes. One of them is to minimise effects of shrinkage of concrete. Second is to divide the portions based on the pouring capacity at a time. If pour-strip is to be provided for the second case, this can be resolved by making it as a construction joint with the prestressed and non-prestressed elements and reinforcement runs contin-uous through multiple pours. This is achieved using LH-RH coupler or Smart coupler. Here, its schematic figure is shown which provides its working methodology.

Mechanisms for Reducing Pour-Strips

Mechanisms for Fire Protection

Procedure

COUPLER

PT CABLE-2

PT CABLE-1.

EXCESS LENGTHFOR STRESSING.

POUR-1 POUR-2

LH - RH

1

2 3

CJ / POURSTRIPCOUPLERLH - RH

4

Cover-to-reinforcement can be enhanced from 25 mm to 35 mm or more based on the severity aspects. There is an insignificant increase in the P-T requirement i.e. around 0.03 – 0.05 kg/sq.ft. to accommodate such requirement of providing more cover.

UBC criteria shall be utilized by providing passive reinforcement for 1 DL + 0.25 LL Load case. This would make sure that the pre-stressed slab performs as desired in case the fire damages all P-T cables. This provides required residual capacity in absence of P-T force. Opting UBC criteria should not increase the reinforcement to much extent, in many of the cases, the additional passive reinforcement required to satisfy 1.5 DL + 1.5 LL case corresponding to limit state of collapse condition would be sufficient enough to satisfy UBC criteria.

1.

2.

1 STRESS & LOCK THE CABLE-1 AT CONSTRUCTION JOINT OR POUR STRIP FACE.DO NOT CUT EXCESS LENGTH OF CABLE-1.

2 LOCK THE END OF EXCESS LENGTH IN IN COUPLER.USING STRESSING JACK ON SITE.

3 LOCK THE END OF CABLE-2 TO BE PLACED IN NEXT POUR IN OTHER ENDOF COUPLER USING JACK, EITHER AT SITE OR AT WORKSHOP.

4 ATTACH BOTH ENDS OF LH - RH COUPLER.

I-SECTS (VOID SLAB)SYSTEM

PTSI collaborated with IIT Madras (Structural Engineering Division), Chennai to conduct a study on "Experimental and Analytical Research on Void System" in order to formulate design aspects of Void System in context with Indian Standards.

I-SECTS (VOID SLAB) SYSTEMIn association with Daliform Group SRL, Italy, we present I-sects Forming System / U-Boot Beton® (a voided slab technology) that allows large spans, efficiently formed as flat plates without beams, for many types of buildings and other structures while using significantly less concrete than if solid. This is the most versatile void slab system that allows builders to use less material and still maintain structural integrity.

Basic idea of the Void Slab Technology

The Concept

Traditional voided-slab forming systems that have been used include waffle slabs, single-direction and double-direction span forming systems, and hollow-core precast slabs. The guiding principle, is that building owners and designers can get the advantages of a thin two-way-spanning flat-plate structure while the structural engineer can lighten the floor by more efficiently using the concrete.

INSPIRED BYNATURE

Eliminate concrete in the zones of a slabwhere there is no necessity for it.

At the same time, OPTIMIZE the SLAB’S THICKNESS and

BUILDING MATERIAL VOLUME.

Structural Properties of a Bone

I-sects (Void Slab) System

27

Compact Bone

Cancellous Bone

The concept is actually quite old. By using forming systems, engineers have decreased the weight of floor slabs by creating voids through a variety of techniques for a very long time. But newer systems now make it possible to increase the efficiency of cast-in-place (CIP) concrete construction and reduce overall cost.

Practical Conceptualisation

Slab With Hidden Dropcap Making Flat Ceiling

Application Of I-sects (Void Slab) System

Ceiling SlabSolid slab

Even if we can’t see, the BEAMS still EXIST and RUN IN BOTH DIRECTION.

Ceiling Slab with I-sect (Void Slab) SystemLighter Slab

U-Boot Beton® is used in all applications that require a structural plate together with the need to use less concrete and therefore for a lighter structure.

U-Boot Beton® is the ideal solution for creating slabs with a large span and/or great load-bearing capacity: it is particu-larly suited for structures that require considerable open spaces, such as executive, commercial and industrial buildings as well as public, civil and residential structures. It makes it possible to more irregularly distribute the columns, as beams do not need to be created. In the case of yards that are difficult to access or restructuring work, U-Boot Beton®, due to its stackability, modularity, lightness and maneuverability, can be used to make horizontal structures without the help of handling and hoisting equipment.


28

Advantages

Characteristics of a U-boot Beton® Slab and Comparison with a Conventional Solid Slab

We are incorrectly led to estimate the advantage of a slab made lighter with U-Boot Beton® limiting it to a mere com-parison between savings in concrete and the cost of the formwork on the level of the slabs only.

In this way however, as the analysis is immediate and intuitive, it does not account for the various economic, practical and operational advantages provided with U-Boot Beton® for the entire structure:

less use of reinforcement in the slabs, columns and foundation up to a total of 15% (also in the case of variants)less concrete is used not only for the slabs but also for the columns and foundationsthere are seismic advantages related to reduced building weightslimmer columns and foundations, lower costs related to excavation for foundations incorporates irregular arrangement of the columns to reflect the architectural freedom of the structure

Columnspacing

c/c

Thickness of the proposed

slab with imposed

load of 500 kg/m2

H Upper H U-Boot H LowerVoid slab

moment of inertia

Solid Slab moment of

inertia

Equivalent percentage

loss of height

Void slab

volume

Solid slab

volume

Weightsavings

m mm mm mm mm x104

mm4/mx104

mm4/m% m3/m2 m3/m2 %

7x7 260 50 160 50 122,364 146,467 5.85 0.1930 0.26 26 8x8 300 70 160 70 200,897 225,000 3.73 0.2330 0.30 22 9x9 340 50 240 50 246,063 327,533 9.12 0.2385 0.34 30

10x10 360 100 160 100 364,697 388,800 2.14 0.2930 0.36 19 11x11 380 70 240 70 375,796 457,267 6.36 0.2785 0.38 27 12x12 420 50 320 50 429,513 617,400 11.43 0.2861 0.42 32 13x13 440 100 240 100 628,396 709,867 4.02 0.3385 0.44 23 14x14 460 70 320 70 623,247 811,133 8.44 0.3261 0.46 29 15x15 500 50 400 50 673,542 1,041,667 13.56 0.3315 0.50 34 16x16 520 100 320 100 983,847 1,171,733 5.70 0.3861 0.52 26 17x17 540 70 400 70 944,075 1,312,200 10.43 0.3715 0.54 31 18x18 580 50 480 50 989,345 1,625,933 15.30 0.3770 0.58 35 19x19 600 100 400 100 1,431,875 1,800,000 7.38 0.4315 0.60 28 20x20 620 70 480 70 1,349,478 1,986,067 12.13 0.4170 0.62 33 21x21 680 100 480 100 1,983,678 2,620,267 8.90 0.4770 0.68 30 29



30

Void Slab in Residential Appartment

Schematic Section of Void Slab

INITIAL CASTING UPTO BOTTOM OF I-SECTS UNIT

SLAB TOP LEVEL CASTING AFTER 2 HOURS OF INITIAL CASTING

8845

3960

8665

16125 16125

8845

15125

88958665

13245

1512513245

16125396016125

8895

Site Visuals


31

Void Slab in Residential Appartment

SMART PRODUCTS

Save TIMESave MONEY

Ensure QUALITY

MATURITY SENSING SYSTEMMaturity Sensing System consists a rugged, waterproof, wireless sensor/logger for monitoring the temperature of concrete from fresh stage to hardened stage. It can be placed in the concrete formwork at the time of casting to moni-tor the temperature of concrete on site. The continuous measurements are recorded and can be downloaded at any time during the concrete setting and hardening stages.

The continuous monitoring of concrete temperature can be used as a QC/QA procedure as well as maturity-based strength estimation of concrete. The field monitoring of concrete temperature and strength using maturity meter can also help with optimizing the formwork removal time, application of load on the structure, stressing of post-tensioned cables, as well as opening traffic on concrete pavement.

Smart Products

33

How It WorksMaturity Sensing System is a complete system designed for ease of use. It is engineered to sustain the ruggedconditions of heavy construction sites.

How It Is Used

Maturity, (°C-hours)

Calibration Curve

(1) Before constuction begins, a set of test specimens are cast to obtain Calibration Curve for the specific mix design

(2) Maturity sensors are embedded in a separate in a separate speci-men which measures maturity of concrete (°C-hours)

(3) Specimens without sensors are used to find compressive strength at standard intervals of 1, 2, 4, 7 and 14 days using conventional cube test methodology

(4) Maturity values (from sensors) are co-related with the compres-sive strength values andits graphical representation is as shown in the figure

Components

Reader / SoftwareMaturity Sensors

Smart Products

34

Application

Roadway Paving – Know exactly when to open to trafficBridges – Know when to strip forms, remove shoring and allow loads on the structureMidrise Building – Know when to strip forms, remove shoring/reshoring and allow loads structure on the slabs, columns or shear wallsHigh-rise Building – Monitor the strength gain in columns when high strength concrete is usedMass Pours – Use real time strength information to determine safe temperature gradients.Precast Operations – Monitor element strengths to optimize processes and timing of shipments.Moisture protection – Optimize curing operations Post Tensioning – Optimize time-cycle of post-tensioning activities such as stressingForm Stripping – Optimize the timing of form stripping operations

Maturity Sensing System can be used to monitor the temperature profile of fresh and hardened concrete.

FeaturesWireless technologyRuggedized and waterproof designReal-time on-site data of Temperature, Maturity & StrengthNo waiting for 1, 3, 7 or 28 day breaksContinuous measurement and recording of temperatureEasy activation through tying the wires togetherExtended temperature sensor for deep elements and mass concreteMaturity calibration curve databaseLong battery lifeDedicated software for tablet/smart phonesEasy data sharing and export in PDF and CSV file

BenefitsEarly-age strength estimationReal time data of poured concreteOptimizing concrete mix designs“Back-up” for faulty test samples

Technical Specifications

ReadingRange

Accuracy Resolution WirelessSignal Range

Dimension(mm)

MeasurementInterval

TemperatureCable Length

-30°C to +80°C ±1°C ±0.5°C 8 meters(25-27 ft) 38*38*12 Every 30

minutes 40 cm (16”)

Smart Products

Ingredients

In Kgs

Cement

382

FlyAsh

46

SilicaFume

32

Fine SandCoarse Aggregates

613

10mm

499

20mm

754

Water

164

Ice Flakes

30

Admixture

4.370

PP Fibres

0.600

Maturity (˚C Hours) Concrete Cube

Strength (N/mm )

705

2123

4840

9553

15.00

36.33

49.60

60.20

Sensors (MPa)

Strength

16.70

36.20

49.30

62.30

Days

1

3

7

16

Concrete Correlation

Concrete Temperature And Strength Test Results

For Concrete Grade M40:

Strength Maturity Relationship70

60

50

40

30

20

10

00 12000100008000600040002000

Stre

ngth

(MPa

)

19.00 1 Day

16 Day

36.60

60.50

Here, strength can be defined corresponding to the maturity. For eg. for maturity of 2000 ˚C Hoursthe corresponding strength value is 36.60 MPa.

DESCRIPTION

K B buildconProject Name:G-47 Trial Mixes M-40Sensor Name:VadodaraLocation:

M-40 Mix ID:Temperature Time FactorMaturity Method:

°0.0 CDatum Temperature:M-40 (C382 + FA46 + SF32)Comments:

TEST RESULTS

63.2 MPaStrength:11538 C-hrsMaturity Index: 0

25.0 CMin Temperature: 0

35.2 CMax Temperature: 0

TEMPERATURE

STRENGTHMATURITY

3 Day

7 Day

49.70

Maturity ( C - Hours)o

2

Here, the heat of hyderation atinitial level is controlled by usingice flakes.

Time

Time Time

37.2

33.7

30.1

26.6

23.1

Sun8

oct

Mon9

oct

Tue10oct

Wed11oct

Thu12oct

Thu12oct

Fri13Oct

Sat14Oct

Sun15Oct

Mon16Oct

Tue17Oct

Wed18Oct

Thu19Oct

Fri20Oct

Sat21Oct

Sat21Oct

Sun22Oct

Mon23Oct

Sat7

Oct

11.5 K

8.66 K

5.77 K

2.89 K

0.0

Sat7

Oct

Mon9

Oct

Wed11Oct

Fri13Oct

Sun15Oct

Tue17Oct

Wed18Oct

Fri20Oct

Sun22Oct

65.2

48.9

32.6

16.3

0.0

Sat7

Oct

Mon9

Oct

Wed11Oct

Fri13Oct

Sun15Oct

Tue17Oct

Wed18Oct

Fri20Oct

Sun22Oct

STRE

NG

TH (M

Pa)

MAT

URI

TY( C

-hrs

)Te

mpe

ratu

re( c

)

35

ReferencesASTM (American Society for Testing and Materials)

ACI 228.1R (Section 2.7) - "In-Place Methods to Estimate Concrete Strength"ACI 306R - "Cold Weather Concreting"ACI 318 - "Building Code Requirements for Structural Concrete"R6.2 "Evaluation of concrete strength during construction may be demonstrated by field-cured test cylinders or other procedures approved by the building official such as: Maturity factor measurements and correlation in accordance with ASTM C 1074

ASTM C 1074 - "Standard Practice for Estimating Concrete Strength by the Maturity Method"ASTM C 918 - "Standard Test Method for Measuring Early-Age Compressive Strength and Projecting Later-Age Strength“ASTM C1064 - “Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete"

ACI (American Concrete Institute)

Comparison

Parameters Conventional Testing Smart Sensor

PreparingConcrete cube specimen should be preparedwith controlled monitoring under supervisionof engineer as per IS:516.

Not required. Once installed it is readyto use.

CuringContinuous curing is required to maintain thetemperature of the concrete element as wellas w/c ratio.

Temperature data are available at each 30min interval, which helps to provideadequate curing needed.

Testing Concrete cube specimen are taken for testingon 3 , 7 and 28 day to external labs.

Gives real time data of temperature (°C),maturity (°C – Hours.) and strength (MPa)

Timing Work is being delayed, due to waiting for theresults of 3 , 7 and 28 day.

Work can be planned after getting realtime concrete strength data collectedin 24 hours.

Record Reports of tests conducted on 3rd, 7th and28 day.

Sensor gives data of all 30 days at everyinterval of 30 minutes.

WorkmanshipSkilled manpower is needed as per IS:516 tofollow the method of measuing strength ofconcrete.

Not Required.

Prediction No prediction until breakage of specimens Prediction of 28 days strength can bederived.

Costing Less Expensive & less information Little Expensive, but hassle free.Overall cost effcetive.

Construction flowPrediction becomes difficult due to limitednumber of resdings obtained which makes itimpossible to pre-plan the work-flow.

Data can be extrapolated for strengthprediction, which helps in pre-planningof work schedule.

Securing Cube specimen should be accurate in size. Not required.

3Frequency For 100m of concrete, minimum 30 cube

specimen required (As Per IS 456).PTSI recommends two sensor for 100mof concrete.

3

rd

rd

th

th th

th

th

Smart Products

36

PARED FRAME

37

Smart Products

Pared Frame is made up of Cold Form Steel (C.F.S.). It is state-of-the-art technology which provides more strength and durability to the structure and also saves time. It is designed to replace the conventional methods and to optimize the efficiency of the resources. It can be used for loading, non- loading structures, roof trusses, and any desired architec-tural requirement. At present this technology is practised all around the world & has more than 15 international codes for the designing but aisi is preferred more.

Not only in india but all around the world it is used in many areas of construction like internal / external non- load bearing wall of

Applications

(1) Residential projects (2) Commercial projects (3) Hotels, hospitals(4) Institutional buildings (5) Industrial buildings(6) Malls, showrooms, offices(7) Warehouses / storage places(8) Individual bungalows / villas, farm houses (9) Mass housing/ govt. Housing schemes(10) Temporary structures, etc.

Advantages

(1) Time saving(2) 40% lighter design than block masonry(3) Behaves better during earthquake (4) Fire resistance up to 3hrs (5) Easy to carryout/ reschedule activities (6) Uniform finishing (7) Waterless construction(8) 100% customization (9) No debris(10) Non – toxic (11) Green building (12) Recyclable & reusable

Fig1 : Wall Section and Detailing

C-Stud

Anchor Fastners

SheetingMaterial

Insulation

U-Stud

Service Hole

Fig2 : Stud Section and Detailing

C-studU-stud

Thickness

Lip

Flange

Web

Timeline

38

PTSI Timeline

Received "Indian Achievers Award for Industrial Development"Opened Office in Surat

Executed "Satsang Hall for Govind Devji Temple, Jaipur" which is recognised by theGuinness Book of World RecordsCompleted 100 projectsReceived ISO 9001:2008 (Quality Management System) Certificate issued by DQS India

Installed 1,000 Metric Ton of PT CablesOpened Office in Pune and MumbaiOpened Office in Ahmedabad

Completed 500 projects

Opened Office in Raipur

Received "Indian Construction Industry Awards"

Installed 10,000 Metric Ton of PT CablesCompleted 1,000 projectsShifted to 10,000 sq.ft. Corporate HouseDeveloped automatic PT Cable cutting line

Collaboration with IIT Madras (Structural Engineering Division), Chennai to conductstudy on "Experimental And Analytical research on Void Slab System"First project using P-T and VoidFirst application of P-T in FoundationDeveloped an internal software for monitoring online field operationsInstalled 15,000 Metric Ton of PT Cables

First International Franchise - TEKBEM, TurkeyFirst Domestic Franchise - Pramukh Mono-strand Structures Pvt. Ltd., HyderabadSecond Domestic Franchise - ReliablePT, RajkotSet up of in-house PT Cable extrusion facility

Received ISO 9001:2015 (Quality Management System) Certificate issued by DQS IndiaInstalled 20,000 Metric Ton of PT CablesCompleted 1,500 projectsReceived "CREDAI Gujarat Growth Ambassadors Award 2019"

Started PTSI Set up of 17,000 sq.ft. WorkshopPTSI's First project of Unbonded Post-Tensioning executed

Installed 5,000 Metric Ton of PT CablesFormed Post Tension Services (Gujarat) LLPFirst use of Maturity Sensing System

2006

2008

2009

2010

2013

2016

2017

2018

2015

2014

2012

2019

For solutions contact:

Local presence in other cities – Pune, Jaipur, Aurangabad, Indore, Nashik

SuratD-517, International Trade Center (ITC), Majura Gate,Surat – 395 002, Gujarat, IndiaPhone: +91 75678 78798 | +91 265 2341298E: [email protected]

Contact Person: Mr. Vipul MistryM: +91 9377174743E: [email protected]

Vadodara (Head Office)

Phone: +91 75678 78798 | +91 265 2341298E: [email protected]

PTSI, Off Genda Circle, Opp. Baroda People’s Co. Society,Alkapuri, Vadodara - 390 007, Gujarat, India

Contact Person: Mr. Urav Patel M: +91 9377173493E: [email protected]

E 307, Titanium City Center, Anand Nagar Road, Next to Sachin Towers, Ahmedabad – 380015, Gujarat, India

AhmedabadContact Person: Mr. Nilay GadaM: +91 9328868726E: [email protected]: [email protected]

MumbaiC-206, 2nd Floor, Kailash Business Park,Veer Savarkar Marg, Vikhroli (W), Mumbai - 400079,

E: [email protected]

Contact Person: Mr. Sachin PatilM: +91 9325023867E: [email protected]

Maharashtra, India

RaipurB-2, Ground Floor, Crystal Tower, Telibandha, Raipur – 492 001, Chhattisgarh, IndiaE: [email protected]

Contact Person: Mr. Jasdeep GandhiM: +91 9926200992E: [email protected]

HyderabadPlot No: 38, D.V. Colony,Minister Road,Secunderabad – 500 003, TelanganaE: [email protected]

Contact Person: Mr. Akshay PatelM: +91 9000004342E: [email protected]

INTERNATIONAL PRESENCE

19 Mayis Mahallesi Buyukdere Caddesi No: 20Kat: 5 Sisli/ISTANBUL, TURKEY

Biertek Teknoloji Insaat Ve Uluslararasi TicaretLtd. Sti. (TEKBEM)

RajkotReliable PTOffice No.202, Amrut Commercial Centre,Above Poojara Telecom, Sardar Nagar Main Road,Rajkot - 360001E: [email protected]

Contact Person: Mr. Paresh KalavadiaM: +91 9426201691E: [email protected]

Mr. Rajesh KesariaM: +91 9714697299E: [email protected]

Affiliates

TEKBEM, TurkeyPramukh Mono-strand Structures Pvt. Ltd.,Hyderabad.Reliable PT, Rajkot

Regional OfficesMumbai, Surat, Ahmedabad, Raipur

Associate Company:

DisclaimerThis document has been published for the purpose of providing information of a general nature only. Any reliance on or use, by you of any information contained within this document for any purpose whatsoever shall be entirely at your own risk, and any liability to you is expressly disclaimed to the maximum extent permitted by law.

PTSI, Off Genda Circle, Opp. Baroda People’s Co-Op. Society,Alkapuri, Vadodara – 390 007, Gujarat, IndiaPhone: +91 75678 78798, +91 265 2341298E-mail: [email protected], [email protected]

Presence in other citiesPune, Jaipur, Aurangabad, Indore, Nashik

Manufacturing FacilityVadodara

www.ptsindia.net

making structure more sustainableptsindia.net/downloadble/company/literature/... · c o n t e n t...

Documents