Post Tension Services India Pvt. Ltd.

MAKING STRUCTURE MORE SUSTAINABLE
Unbonded P-T I-sects (Voided Slab) Maturity Sensing

C O N T E N T
Page No.
Maturity Sensing System
28
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
1
2
3
4
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 oriented
approach
Openly shared our
design criteria and
More than 80%
CUSTOMER FOCUS
Company Profile
05
5
Components
12
Key features
18
Mono-Strand Unbonded P-T System
10
I-Sects (Voided Slab) System
22
MATURITY SENSING
SYSTEM
Save TIME
Save MONEY
Ensure QUALITY
Key feature : Flat Plate
Mono-strand Unbonded P-T System
18
On-site Photographs
14'-2" 18'-9" 16'-9" 18'-9" 13'-6" 18'-9" 16'-9" 18'-9" 14'-2"
150'-3"
4'-6"19'-2"7'-3"7'-3"
38'-1"
PTS1
6.5" THK.
PTS1
6.5" THK.
Components of P-T System
Encapsulated P-T System
Standard P-T System
Anchor Plate
P-T Cable
Pocket Former
End Cap
Pocket Former
Encapsulated Anchor Plate
Polyethylene Sheathing
P-T Cable
12
I-SECTS (VOIDED SLAB)
SYSTEM

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 1000 diverse buildings across various industries,
PTSI’s post-tensioning technology and expertise make 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
Unbonded P-T Design
Supply of
Unbonded P-T System
On-site
Services
1
2
3
4
TOTAL SOLUTION – Value Driven
QUALITY
TRANSPERANCY
We provide end-to-end
solution for Monostrand
Unbonded P-T System
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
Value-added logistics of
material and services
In-house proficient P-T design
Services oriented
approach
Openly shared our
design criteria and
material specifications
More than 80%
customer retention
CUSTOMER FOCUS
Company Profile
05

PTSI Team
Technical Forte
40%
60%
DESIGNING
1 ProductionHead
2 Maintenance Engineer
3 Assembling in-charge
1 OperationHead
6 Team Leader
40 Site Executives
1 SalesHead
5 Managers
36 in Other Support
Functions
1 Design Head
3 Team Leaders
10 Design Engineers
15 Draughtsman
EXECUTION
SALES & MARKETING SUPPORT
PRODUCTION
TECHNICAL TEAM
BUSINESS SUPPORT TEAM
Workshop posses an
inventory capacity of
400MT P-T Cable
17,000 Sq. Ft. workshop
for assembling activity
Developed in-house
troubleshooting &
retroﬁtting tools and
tackles
28 set of Hydraulic
Stressing Assembly
Dedicated Technical Team
Mechanical Engineers
Metallurgical Engineer
Advanced calibration
equipment for hydraulic
assembly
Company Proﬁle
06

Company Proﬁle
07
PTSI Growth
Top 15 Cities (by No. of Project)
More than 1000 projects completed
Under-construction projects130+
Working in major cities15
(City, No. of Projects)
Categories
(Sub Categories)(Categories, No. of Projects)
Commercial (446)
Institutional (134)
Residential (212)
Corporate (45)
General (10)
Industrial (114)
Hospitality (96)
Mall (26)
Showroom (23)
IT Parks (11)
Schools (39)
Colleges (21)
Factory Building (66)
Diamond Factory (12)
Textile Market (14)
Hotel (48)
Hospital (10)
0
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Years
MetricTonORSq.Ft.Area(X1000)
Data as on 31st March 2016
Data as on 30th September 2016
Area(in Sq. Ft.) P-TCable (in MT)
Installed more than
of P-T Cable in approx.
of area till date.
11300 MT
28 million Sq. Ft.
6000
5000
4000
3000
2000
1000
Vadodara (218)
Surat (363)
Ahmedabad (72)
Vapi (53)
Jaipur (40)
Mumbai (42)
Pune (35)
Nashik (33)
Bhavnagar (20)
Indore (18)
Rajkot (14)
Bharuch (11)
Jamnagar (10)
Valsad (10)
Aurangabad (8)

PROJECT : Urmi Estate (Tej Tower)
Developer : Keshav & Co. (TG Group)
Structural Consultant : Mr. U. N. Kamath
Architect : Mr. Raja Aederi
Location : Mumbai
Total Area : 3,50,000 (Sq. Ft.)
PROJECT : Tata Consultancy Services
Developer : Roma Builders
(Hiranandani Group)
Structural Consultant : Mahimtura Consultants
Architect : Design Center (Hiranadani)
Location : Mumbai
PROJECT : Sandip Foundation Campus
Developer : Sandip Foundation
Structural Consultant : Mr. Shailesh Dhumne
Architect : Mr. Abhoy Shah
Location : Nashik
PROJECT : Millenium Textile House
Developer : Shanti Residence Pvt. Ltd.
Structural Consultant : Mr. Jalil Sheikh
Architect : Mr. Sanjay Josshi
Location : Surat
PROJECT : NMIMS Campus
Developer : Shri Vile Parle Kelavani Mandal
Structural Consultant : PT Gala Consultants
Architect : Talati & Panthaky Associates
Location : Indore
PROJECT : SRK Diamond Factory
Developer : Shri Ramkrishna Exports
Structural Consultant : Mr. Hiren Desai
Architect : Mr. Snehal Shah (Essteam)
Location : Surat
Total Area : 53,230 (Sq. Ft.)
PROJECT : Shivalik Shilp
Developer : GSS Organisers LLP
Structural Consultant : Ducon Consultants Pvt. Ltd.
Architect : Sanjay Puri Architects
Location : Ahmedabad
PROJECT : Ratnaakar Nine Square
Developer : NCPL Infracon LLP
Architect : ADS Architect Pvt. Ltd.
PROJECT : BEL Indore
Developer : Brilliant Tenchnologies &
Construction Pvt. Ltd.
Structural Consultant : Mr. Jayesh Jain (RKGA)
Architect : Space Forum Architects
Location : Indore
PROJECT : Signature Gift City
Structural Consultant : Mahimtutra Consultants
Architect : Mr. Hafeez Contractor
Location : Gandhinagar
PROJECT : Light Hall
Developer : Gamma Construction Pvt. Ltd.
Balaji Tele Developers Ltd.
Structural Consultant : Mahimtura Consultants
Architect : Pushkar Consultants
Location : Mumbai
PROJECT : Nilamber Triumph
Developer : Nilamer Infratech LLP
Structural Consultant : Geo Designs & Research (P) Ltd
Architect : P. G. Patki Architects
Location : Vadodara
PROJECT : Alembic Business Park
Developer : Alembic Ltd.
Structural Consultant : AADesai Consulting Engineer
Architect : Mandviwala & Qutub Associates
Location : Vadodara
PROJECT : Siyaram Silk Mill
Client : Siyaram Silk Mill
Structural Consultant : Mr. Manish Shah (Shilpam)
Architect : -
Location : Daman
PROJECT : Headquarter
Developer : Green Acres Builders & Developers
Structural Consultant : Mr. Arjav Upadhyay
Architect : Mr. Vijay Gupta
Location : Indore
PROJECT : Raheja Sapphire
Developer : S. Raheja Sapphire Residency LLP
Structural Consultant : PT Gala Consultants
Architect : SNG Consultants
Location : Mumbai
PROJECT : Parekh Alluminex
Client : Parekh Alluminex
Structural Consultant : Mr. Janak Bhavsar
Architect : -
Location : Vapi
PROJECT : Mexus Corporation
Client : Meril Life Science
Structural Consultant : Mr. Yogesh Kerawala
Architect : -
Location : Vapi
PROJECT : Vidhya Atelier
Developer : Mr. Gopal Dokania
Structural Consultant : Mr. Jalil Sheikh
Architect : Mr. Ajit Jariwala
Location : Surat
PROJECT : Yantric Building
Client : FEM Construction (I) Pvt. Ltd.
Structural Consultant : Dr. H. M. Raje
Architect : Design Matrix
Location : Mumbai
PROJECT : AAA Corporate House
Client : Apurva Amin Architects
Architect : Mr. Apurva Amin
Projects Highlights
Company Proﬁle
08
Developer : Volupia Developers Pvt. Ltd.
(Hiranandani Group)

Members of
Awards and Accreditation
Societal Activities
Indian Construction Industry Awards 2015
Awarded as “Sarvottam Construction Technology Service Provider in
Unbonded Post Tensioning System” by Builders’ Association on India
(BAI) in 2015.
Appreciation for Guinness Book of World Records
Accredited for the services rendered for the Post-Tensioning by N. M.
Roof Designers Ltd., Jaipur for being awarded by the GUINNESS BOOK
OF WORLD RECORDS as the WORLDS LARGEST REINFORCED CEMENT
CONCRETE FLAT ROOF WITH A SINGLE SPAN OF 119ft in 2009.
Indian Achievers Award for Industrial Development 2008
Honored with “INDIAN ACHIEVERS AWARD FOR INDUSTRIAL
DEVELOPMENT” by All India Young Achievers Foundation in 2008.
PTSI has entered into an Memorandum of Understanding (MOU) with Parul Institute of Engineering & Technology (Parul
University) for supplementing awareness of the latest developments in the industry through training and seminars.
Membership Category:
Post-Tensioning Company
Supported the wall painting traﬃc carnival in association with Vadodara city police through which school children and
students of The Maharaja Sayajirao University of Baroda painted the entire 1 kilometer compound wall of the union
pavilion for the "The Road Safety Carnival 2013"
Company Proﬁle
09

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 the concrete in compression
and overcoming its weakness in resisting tension. Post-Tensioning Systems apply compressive force to the structure through the
stressing of high strength steel strand with specialized anchorage assemblies. The flexibility of the strand is a major advantage,
allowing it to be profiled through the concrete element, counteracting a portion of the 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 of
Design Stress
Tension (T)
Combined Effects Of Stresses
C
T
C
Weight (Load)
P.e
Z
P
A
+
DESIGN STRESSES
M
Z
PRE-COMPRESSION LOAD-BALANCING FINAL STRESSES
+ =
C
T
T
C
C
T
C
P
A
P.e
Z
11

Components of P-T System
Encapsulated P-T System
Standard P-T System
Anchor Plate
P-T Cable
Pocket Former
End Cap
Pocket Former
Encapsulated Anchor Plate
Polyethylene Sheathing
P-T Cable
12

Technical Specifications
7 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 shall 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 shall provide protection
against corrosion to the Prestressing steel
(6) It shall be a compound with appropriate
moisture-displacing and corrosion-inhibiting
properties.
(7) Minimum weight of the grease coating on the
Prestressing strand shall not be less than
37.4grams/m for 12.7mm diameter strand.
(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 or
polypropylene
(2) Minimum Density: 0.94gram/cm
(3) Thickness: more than 1 mm
3
(4) Appearance: Sheathing shall provide a smooth
circular outside surface
(5) Coverage: Sheathing shall be continuous over the
entire length to be un-bonded, and shall prevent
intrusion of cement paste or loss of P-T coating.
Specifications
Hardness:
(A) At Surface: 56 – 65HRC
(B) At Core: 40 – 46 HRC
Material Grade:
IS:9175 (Part 20)-1986 Grade 20MnCr5
Specifications
Microstructure:
(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 OR
IS 1865 Grade SG 500/7
Material Grade:
(2) It shall provide proper lubrication between
the 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 temperature
of 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/m² (As per recommendation received from the Structural Consultant)(1)
Floor Finish (FF): in kN/m² (As per recommendation received from the Structural Consultant)(2)
Wall Load: in kN/m² (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 to be used)
(3)
Service Duct & False Ceiling Load: in kN/m² (As per recommendation received from the Structural Consultant)(4)
Self-weight of the members: as per the section size (considering pre-stressed concrete weight 23.5 kN/m³ as per IS 875 part
1 : 1987)
(5)
Minimum Grade of Concrete (fck): M35 (cube strength)(6)
Grade of Steel: fe415 or fe500 (as per the recommendation from the consultant/client in advance for the prelim design)(7)
Level of Pre-stressing as per ACI 318M-11 (clause 18.3.3):(8)
Level of Pre-stressing as per IS 1343-2012 (clause 24.2.1):(9)
Criteria for maximum spacing of tendon placement shall be followed as per ACI 318M-11 clause 18.12.4: 8*slab thickness and
5ft whichever is smaller for the uniformly distributed tendons in slab.
(10)
Additional non-prestressed reinforcement provided as per the criteria of ACI 318M-11 clause 18.9 for minimum non-pre-
stressed reinforcement and clause 18.7 for the required non-prestressed reinforcement to achieve required flexural strength
at ultimate load combination case. Reinforcement requirement for temperature and shrinkage effects shall be as per Clause
19.6.3.3 of IS 1343 : 2012 i.e. 0.15% of total cross section area of the concrete section.
(11)
Permissible Deflection values (Long Term with shrinkage and creep effect considering creep coefficient as 2) as per IS 1343 :
2012 clause: 20.3.1 a, b, c
(12)
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 ⅔ depth of the member when measured from the bottom.
(13)
The minimum CGS height of tendon at the mid-span shall not be less than 38 mm in case of slab and 55mm in case of beam
when measured from the bottom.
(14)
Minimum clear cover to the reinforcement shall be 20 mm for the slab and 40 mm clear from the longitudinal reinforcement
for the beams.
(15)
PTSI submits moment of resistance (moment capacity) at respective sections for P-T beams when the Structural Consultant
likes to consider them for the lateral force resisting system. The Consultant can provide necessary passive reinforcement
based on the moment of resistance in addition to the requirements of gravity force design performed at PTSI.
(16)
For Two-Way Flat Slabs: Class U; Tensile Stress Limit of concrete slab section for “Serviceability Design Requirements as
per ACI 318”: less than or equal to 0.5*square root of equivalent cylindrical strength value of concrete grade at the
mid-span bottom fiber zone.
(8.1)
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 design for Fire Tender Loading.
(8.2)
For Two-Way Flat Slabs: Type-2 with tensile stresses below 3N/mm² at the mid-span bottom fiber zone.(9.1)
Final Downward Deflection due to SW + LL + FF + SDL + PT + Effects of Shrinkage and Creep (corresponding to SW + FF
+ SDL + PT) should not be more than span/250
(12.1)
Downward Deflection (occurring after erection of partitions and the application of finishes) due to Shrinkage and Creep
(corresponding to SW + FF + SDL + PT) and LL should not be more than span/350 or 20mm whichever is lesser shall be
considered.
(12.2)
Total upward deflection should not exceed span/300 unless uniformity of camber between adjacent units can be
ensured.
Note: The criteria 12.1 and 12.2 same as prescribed in IS 456 : 2000 clause 23.2.a and 23.2.b respectively.
(12.3)
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.
(9.2)
16

Featured Project
Satsang 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 are at the perimeter of the 119 feet x
124 feet area. Four at the corners and
four at the side edges. There is no inter-
nal support. It is a waffle floor configura-
tion with 57 inches deep P-T beams both
ways and 8 inches thick P-T slab panels.
There was constrain 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
importance. 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 Guinness
World Records in 2009
Appreciation Letter for
providing P-T sevices
17
123'-4"
128'-4"
PTS1
8" THK.

Key feature : Flat Plate
18
On-site Photographs
14'-2" 18'-9" 16'-9" 18'-9" 13'-6" 18'-9" 16'-9" 18'-9" 14'-2"
150'-3"
4'-6"19'-2"7'-3"7'-3"
38'-1"
PTS1
6.5" THK.
PTS1
6.5" THK.

Key feature : Cantilever
1940
[6'-4"]
6705
[22']
6875
[22'-7"]
765
[2'-6"]
6647
[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

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-1
32045
[105'-2"]
POUR-2
21100
[69'-3"]
POUR-3
19200
[63']
POUR-2
21100
[69'-3"]
POUR-1
32045
[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"]
6350
[20'-10"]
6350
[20'-10"]
6350
[20'-10"]
6350
[20'-10"]
6350
[20'-10"]
3175
[10'-5"]
6350
[20'-10"]
6350
[20'-10"]
6350
[20'-10"]
5700
[18'-8"]
5700
[18'-8"]
5700
[18'-8"]
5700
[18'-8"]
5700
[18'-8"]
5700
[18'-8"]
6070
[19'-11"]
6910
[22'-8"]
200
[8"]111530
[365'-11"]
3175
[10'-5"]

I-SECTS (VOIDED SLAB) SYSTEM
In 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
voided slab system that allows builders to use less material and still
maintain structural integrity.
The Concept
Basic idea of the Voided Slab Technology
The concept is actually quite old. By using forming systems engineers have decreased the weight of floor slabs by creat-
ing 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.
Traditional voided-slab forming systems that have been used include waffle slabs, single-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.
Compact Bone
Cancellous Bone
Space Containing
Bone Marrow and
Blood Vessels Traveculae
INSPIREDBY
NATURE
Eliminate concrete in the zones of a slab
where from a static perspective 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 (Voided Slab) System
23

Practical Conceptualisation
Slab With Hidden Dropcap Making Flat Ceiling
Application Of I-sects (Voided Slab) System
Ceiling Slab
Massive slab
Even if we can’t see,
the BEAMS still EXIST
and RUN IN BOTH DIRECTION.
Ceiling Slab with
I-sect (Voided Slab) System
Lighten 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 pillars, 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.
24

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 foundations
there are seismic advantages related to reduced building weight
slimmer columns and foundations, lower costs related to excavation for foundations
incorporates irregular arrangement of the columns to reﬂect the architectural freedom of the structure
Column
spacing
c/c
Thicknessof
the proposed
slab with
imposed
load of 500
kg/m2
H Upper H U-Boot H Lower
Void slab
moment of
inertia
Solid Slab
moment of
inertia
Equivalent
percentage
lossof
height
Void
slab
volume
Solid
slab
volume
Weight
savings
m mm mm mm mm
x104
mm4/m
x104
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 10 364,697 388,800 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 25

26
Detailing Name : Shaktidham Temple
Developer : Bharuka Construction
Architect : Nadkarni Mahajan & Associates
Location : Aurangabad
Total Area : 6,340 Sq. Ft.
Structural Consultant : Mr. Milind Rathi
Flat Plate with Voided Slab (with Unbonded P-T System)
3415 [11'-2"] 5000 [16'-5"] 5000 [16'-5"] 5000 [16'-5"]
18680 [61'-3"]
4700[15'-5"]5600[18'-4"]4665[15'-4"]1465
[4'-10"]
15522[50'-11"]
PTS1
480 MM
PTS1
480 MM

Flat Plate with Voided Slab (with Unbonded P-T System)
Site Visuals
27

MATURITY SENSING
SYSTEM
Save TIME
Save MONEY
Ensure QUALITY

MATURITY SENSING SYSTEM
Maturity Sensing System is 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 monitor the
temperature of concrete on site. The continuous measurements are recorded and can be downloaded 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.
HOW IT IS USED
Before construction begins, a set of test specimens are cast, out of
them some with the maturity sensors embedded, to plot the
relationship between compressive strength and maturity (degrees
Celsius – hours) for the specified mix design. At standard intervals –
1, 2, 4, 7, and 14 days – strength and maturity are measured. Results
are presented graphically, known as “Calibration Curve”.
HOW IT WORKS
Maturity Sensing System is a complete system, designed for convenience and ease of use. And it is engineered to
stand up to the rugged conditions of heavy construction sites.
The system includes:
Maturity Sensors
Maturity Sensors, contain a long-life battery, microprocessor, memory, and thermistor. Placed in concrete
while casting, Sensors continuously calculate and store concrete maturity data. A tough casing protects the
intelligent electronics inside.
A
Reader / Software
The handheld Reader is used to communicate with embedded Sensors. Workers simply connect Sensors and
use the Reader to view and download maturity data.
B
29
Maturity, (°C-hours)
Calibration Curve
FEATURES
Maturity Sensing System utilizes – and optimizes – the maturity method, adopted as an industry standard by ASTM,
ACI, NIST, and others, offering real advantages over traditional cylinder testing and other maturity products.
More accurate than lab- or field-cured PCC test specimens
Real-time data display for faster decisions. No waiting for 2, 3, or 7-day breaks
Continuous measurement and recording of temperature
A complete system for worksite and office convenience
Rugged Sensors protected by casing and surrounding concrete
Easy data sharing to other devices like computer
Portable handheld for easy on-site data download anywhere, at any time. No need to carry computers around
the job site

4 easy steps to measure temperature or strength:
Application
Roadway Paving/Patching - Know exactly when to allow for traffic
Bridges - Know when to strip formwork, remove shoring, and load structures, incrementally allow classes of
traffic based on actual in-place strength
Midrise and high-rise buildings - Know when to remove formwork (shuttering), remove shoring/reshoring, and
load structures
Mass Pours - Use real time strength information to determine safe temperature gradients
Precast Operations- Monitor element strengths to optimize processes and timing of shipments
Cold Weather - Cold weather can slow concrete strength gain tremendously. Maturity techniques determine
actual in-place and accounts for environmental influences on strength gain
Post Tensioning - Optimize post tension timing like stressing, shuttering removal and reshoring scheduling
Form Stripping - Optimize the timing of form stripping operations in conventional construction
Maturity Sensing System can be used to monitor the temperature profile of fresh and hardened concrete.
This can provide information on:
Hardening of concrete
Optimization of curing conditions
Monitoring on heating and cooling processes
Quality control in the field
Concrete maturity
Estimation of strength (ASTM C1074)
Concrete mix design optimization
Specification
ASTM (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)
30
1. Embed and Pour 2. Activate 3. Log 4. Read

For solutions contact:
Presence in other cities –
Pune, Jaipur, Bengaluru, Indore
Surat
D-517, International Trade Center (ITC), Majura Gate,
Surat – 395 002, Gujarat, India
Phone: +91 75678 78798 | +91 265 2491298
E:info@ptsindia.net
Contact Person:
Mr. Vipul Mistry
M:+91 9377174743
E:vipul@ptsindia.net
Vadodara(HeadOffice)
Phone: +91 75678 78798 | +91 265 2491298
E:info@ptsindia.net
PTSI, Off Genda Circle, Opp. Baroda People’s Co. Society,
Alkapuri, Vadodara - 390 007, Gujarat, India
Contact Person:
Mr. Urav Patel
M:+91 9377173493
E:urav@ptsindia.net
E 307, Titanium City Center, Anand Nagar Road,
Next to Sachin Towers,
Ahmedabad – 380015, Gujarat, India
Ahmedabad
Contact Person:
Mr. Pratik Mahajan
M: +91 9328868726
E:pratik@ptsindia.netE:info@ptsindia.net
Mumbai
401, Fiji Building, G L Compound
Powai, Mumbai-400076
E:info@ptsindia.net
Contact Person:
Mr. SachinPatil
M:+91 9325023867
E:sachin@ptsindia.net
Contact Person:
Mr. Vaibhav Malpani
M: +91 9422777356
E:vaibhav@ptsindia.net
Nashik
T-11, Third floor, NSB Center, Canada Corner,
Nashik – 422 002, Maharashtra, India
E: info@ptsindia.net
Contact Person:
Mr. Jasdeep Gandhi
M: +91 9926200992
E:jgandhi@ptsindia.net
Raipur
B-2, Ground Floor, Crystal Tower,
Telibandha,
Raipur – 492 001, Chhattisgarh, India
E: info@ptsindia.net
Maharashtra, India

www.ptsindia.net
Disclaimer
Associate Company:
This 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. Society,
Alkapuri, Vadodara - 390 007, Gujarat, India
Phone: +91 75678 78798 | +91 265 2491298
Email: info@ptsindia.net

Post Tension Services India Pvt. Ltd.

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