CURVE STRUCTURE

TM

Introducing
Textile Architecture Roofing
 TENSILE MEMBRANE STRUCTURE

CONTENT

CURVE
Textile Architecture
The different types of Textile Fabrics
Technical information
Services
Clientele

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PRESENTED BY CURVE TM
 WHO IS CURVE?
CURVETM is the leading specialty contractor for custom tensile membrane structures throughout the world.

With more than 25 years of experience, CURVET has worked with owners, architects, engineers and contractors to design
and build custom tensile structures used to and skylights. As a turn-key specialty contractor, CURVE provides pre-
construction assistance; including design assistance, budgeting, construction methodologies and project schedule
development.

Our in-house capabilities consist of design, engineering, fabrication, installation and maintenance. Working closely with
architects and their clients, CURVE assists in delivering award-winning solutions by taking an idea and building an icon.

. FU N CT I O NA L B E N E F I T S O F M E M B R A N E
• Excellent Durability and Long Lasting

• Outstanding Light Transmittance

• Lightweight Structural Requirements

• LowMaintenance

• Signature Design AestheticsCode Compliant

L E T’S EX PLORE
Curve proposes solutions for many different applications.

As well as being the industry reference for solar protection, the company has also made a name for itself in the fields of
tensile Membrane architecture, façade and environment solutions. CURVE build high performance products for
modular structures, protection, environment and visual communication. The company is know for its expertise in
roofing solutions and solar protection.

Textile Facade - Protection against heat and glare, outside visibility, unique visual identity... The creative possibilities
are infinite when it comes to façade coverings.
Building Elevation, Solar Protection Textile Facade, Large Printable facade etc.

Tensile Membrane Structure - Lightweight, freedom of shape and natural light transmission for the creation of
symbolic structures. Discover our tensioned architecture applications.
Airport Tensile Canopies, Sports Covering Structure, Malls Tensile structure etc.

Pre -Engineered - Durability, compliance with fire safety norms, resistance to even the most severe weather conditions,
discover Serge Ferrari's solutions for modular structures, tents and halls etc.
Geodesic domes, car parks , architectural umbrellas, retractable tensile, Exhibition hangers etc.

E X P LO RE MOR E
 HOW WE DESIGN?
Curve is the leading specialty contractor for custom tensile membrane structures throughout the world.

ANALYSIS AND DESIGN

There are stages in the process of analysis and design of Tensile Membrane Structure.

STAGE-1- TENSILE MEMBRANE ANALYSIS:


A) The Membrane analysis is performed using the software –IXCUBE, Italy. It is a non- linear program to perform the fabric analysis.
B) Form finding: - is done with applying pre-stress to the fabric, pre-stress is varied till such time that the desired form is achieved. (force density method is
used to achieve the form)

C) Analysis: - The Pre-stressed form is loaded with the wind loads (applied on the mesh surface) the C.P. Values are calculated as per tables provided in the
IS 875 Part III, the software performs several iterations unless the results converge.

STAGE -2- ANALYSIS AND DESIGN OF SUPPORTING STEEL STRUCTURES:


A) The reaction forces for all nodes where the fabric connects to the steel are extracted from IX CUBE for all load cases and exported to Staad -pro.
B) This Staad -pro model is analyzed for member forces and reactions. Structural steel member design is performed as per IS 875 Part III

CURVE offers design Assistance for architectural tensile tensioned membrane system. 


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 TENSILE MEMBRANE STRUCTURE - PROCESS
STEEL
a) All steel members will be CHS/SHS/RHS confirming to IS 1161 / 1239 / 4239 of min 240 YST. b) Built up members will be made from plates marked with
IS2062. Yst 240/350 as per design. c) Foundation bolts will be of 8.8Gr steel.

d) All nut bolts will be 4.8/8.8 gr.

MEMBRANE
a) Fabric Clamping will be done with aluminum alloy flats & extrusions.

b) Keder will be made of virgin PVC extrusion of 10/12mm as per requirement. c) Fabric clamping with 4.8 GI nuts bolts hot dip galvanized.

FABRICATION & ERECTION PROCEDURE.


FABRICATION PROCEDURE (STEEL).

a) Steel working as per IS 800 2007.

b) All steel members will be cleaned with copper slag blasting & coated with one coat of prefabrication primer before fabrication.
c) Maximum fabrication work will be done in factory in transportable lengths. d) All welding electrodes will be of 7018, oven baked as per practice.

e) Welded surfaces will be inspected as per schedule & QAP.

f) All holes will be drilled 2mm over the bolt size.
FABRICATION PROCEDURE (FABRIC).
a) All welds will be of 40mm width done by HF welding machines. b) 10mm PVC Keder will be welded to edges (clamped to steel). c) Cutting will be done
on CNC Plotter.

d) Flaps etc. where ever possible will be welded in factory.
e) Welds will face downhill.

f) Welded membrane panels will be marked for installation.
ERECTION - STEEL

a) Erection will be done as per standards.

b) Mechanical equipment will be used where ever possible. c) All members will be in line & plumb.
ERECTION - FABRIC
a) Surface preparation will be done by laying PVC ground sheets.

b) All steel surfaces will be checked before fabric erection.

c) Fabric will be installed as per erection schedule.

d) Tensioning will be done as per schedule to achieve a uniform tensioned surface. e) Additional tensioning space will be kept to counter long term creep.
 Modern tensile structure technology with proven materials

TEXTILE MEMBRANE ROOFING

In addition to the use of form, the selection of the right material is of essential importance to the success of the project.
Irrespective of whether its technical textiles (coated or uncoated fabric) – when choosing the material, the desired use, life span of
the building and later maintenance costs should all be considered. Building regulations, structural requirements and illumination
of the covered area should also to be taken into account. The result combines elegance with innovative technology.

CURVE - TENSILE STRUCTURE SERVICES

• Expert advice and support in the design and planning phase
• Structural calculations
• Creating design and fabrication drawings
• Prefabrication of the entire structure to highest quality standards
• Delivery to the construction site
• Complete installation from the top of the foundations
• Service and maintenance
• CURVE can offer a complete Design and Build Package

L E T’S EX PLORE
 • Advantages of Tensile Membrane
1) Flexible design
Virtually unlimited designs of distinctive elegant forms can be realized because of the unique flexible characteristics of architectural
membrane. Also, fewer support columns create more functional, aesthetically pleasing spaces.

2) Outstanding flawlessness
In daylight, the membrane's transparency offers soft diffused naturally lit spaces reducing interior lighting costs. At night, the artificial lighting
creates an ambient exterior luminescence.

3) Shortened construction Schedule

Incorporating the most modern construction techniques, large fabricated membrane panels can be installed quickly to shorten installation
schedules. Likewise, fabric removal can be accomplished easily.

4) Cost Assistance
Lightweight structures can be a more cost effective solution than traditional building materials offering building owners reduced costs.
Materials, such as photo-catalytic membranes, can help prevent temperature rise as well as reduce maintenance costs due to their self-
cleaning properties.

5) Extended span construction

Lightweight membrane is a cost-effective solution that requires less structural steel to support the roof, enabling long spans of column-free
space.

6) Earth quick confrontation

Lightweight tensile membrane structures bear less building load than traditional roofing materials and the membrane's elasticity offers
further earthquake resistance

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 Tensile Fabric Product - Eco Friendly

Noise pollution

Fabric roofing structures provide not only the benefit of reducing climatic noise from rain, hail and wind, but also the curved
construction diffuses both internal and external sounds, whilst absorbing them at the same time. This dramatically improves noise
pollution

Semi-permanent nature
Tension membrane structures ‘historically’ have been closely tied to major events such as exhibitions, where shelters are needed
for short periods of time. Tension Fabric structures can be easily designed for rapid relocation and re-erection; making them
perfect for high impact event structures. Not only does this help with practicality it also helps with planning permission for fixed
term structures as they are classed by most authorities as semi-permanent structures.

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 T E C H N I C A L DATA

Multi-composed top coating lacquering with Titanium-dioxide (TiO2) reinforcement and highly concentrated PVDF mixture on both sides,

TENSILE FAB R I C M E C HA NI CA L P RO P E RT I E S

TY PE COLOR T E N S I L E ST R E N GT H BAS E YARN TOTAL W E IGH T T E A R R ESISTANCE ADHESION THICKNESS

0 STA N DA R D 2400/2200 N/5CM 1100 DT X-PE S 580 GS M 250/200 WAR P/ WEF T 20N/ C M 0.5M M

I W H IT E 3000/2500 N/5CM 1100 DT X-PE S 700 GS M 300/300 WAR P/ WEF T 20N/ C M 0.6M M

II WH I TE 4300/4200 N/5CM 1100 DT X-PE S 900 GS M 500/500 WAR P/ WEF T 25N/ C M 0.8M M

II I WHITE 6000/5500 N/5CM 1670 DT X-PE S 1050 GS M 900/800 WAR P/ WEF T 25N/ C M 0.9M M

IV W HI T E 8000/7000 N/5CM 1670 DT X-PE S 1350 GS M 1200/ 1200 WAR P/ WEF T 26N/ C M 1.1M M

V WHITE 10000/9000 N/5CM 2200 DTX-PES 1550 GSM 2000 /2000 WAR P/ WE F T 30N / C M 1.3M M

TENSILE FAB R I C PHY S I CA L P RO P E RT I E S

TY PE SOLA R T R A N S M I S SI O N S O L A R R E FLAT ION H E AT RE S ISTAN CE FIRE RE S ISTAN CE TRANSLUCENCY WARRANTY

0. 9 / 9% 80/75% -40°C/+ 70°C B1/M2 6%

I. 9/9% 83/81% -40°C/+ 70°C B1/M2 6%

II . 7 / 9% 85/82% -40°C/+70°C B1/M2 6%

II I 6 / 9% 84/82% -40°C/+ 70°C B1/M2 6%

IV. 5 / 9% 86/84% -40°C/+ 70°C B1/M2 6%

V. 3 / 9% 86/84% -40°C/+70°C B1/M2 6%

QUAL ITY AN D E N VIR O NM E N T:

All Textile fabric range product have been submitted to a Life Cycle Analysis, results are available on request. All products comply with European
REACH directives and we are ISO 9001 certified. All textile fabric range products are 100% recyclable through the EPCoat system, information is
available on request.

NOTE:

These indicated technical data are based on average results. Due to production procedures slight deviations can occur. All technical data are in accordance
with the present standard of knowledge and give product information without legal binding. All data apply to new products. All values are generated
according to standards at established laboratories. Results may vary if executed at different laboratories or due to different standard interpretations.
Applications suggested here do not release the customer from testing material for its intended application.
More important feature about tensile membrane

Water Repellent UV Resistance

Fire Retardant Weatherproof

Weldable Antimicrobial

Printable Stain Resistance

Project Location Client Complete Date Fabric Type
Oxygen Chamber Gurgaon- HR Nurturing Green Sept 2017 Type II 900 GSM
Project Location Client Complete Date Fabric Type
IGI Terminal 2B New Delhi- IN GMR Jan 2017 Type III 1050 GSM
Project Location Client Complete Date Fabric Type
Auditorium Covering New Delhi- IN Arwachin Schools November 2015 Type II 900 GSM
Project Location Client Complete Date Fabric Type
Security Check Point Faridabad- IN Apollo Tires November 2017 Type I 700 GSM
Project Location Client Complete Date Fabric Type
Shopping Mall Anjar GJ- IN Welspun India Ltd. June 2017 Type I 750 GSM
Project Location Client Complete Date Fabric Type
Shopping Mall Anjar GJ- IN Welspun India Ltd. June 2017 Type I 750 GSM
Project Location Client Complete Date Fabric Type
Shopping Mall Anjar GJ- IN Welspun India Ltd. June 2017 Type I 750 GSM
Project Location Client Complete Date Fabric Type
Kids Play Covering New Delhi- IN Arwachin Schools November 2016 Type 1 Opaque
Project Location Client Complete Date Fabric Type
Tensile Car Parking Nagpur- IN ABC Infrastructure November 2016 Type I 700 GSM
Project Location Client Complete Date Fabric Type
Resorts Umbrellas Jim Corbett- IN Tarangi Resorts March 2019 Type 0 580 GSM
Project Location Client Complete Date Fabric Type
Resorts Umbrellas Jim Corbett- IN Tarangi Resorts March 2019 Type 0 580 GSM
CURVE CLIENT INCLUDE

Indra Gandhi International Airport (Terminal 2B) – 2016
 ABES Engineering - ( Noida ) – 2016

Food Corporation of India (New Delhi )– 2014
 Arwachin International Cricket Stadium ( New Delhi )
Delhi Metro Rail Corporation ( Haidarpur Metro Station )– 2015 Kota Dussehra Maidan ( Kota ) – 2017
Arwachin Bharti Bhawan School ( New Delhi ) – 2014 Welspun India Pvt. Ltd. Vapi - Gujarat

Hindustan Aeronautics Limited ( Bangalore ) – 2015 Laxmi Vilas - The Lalit - Udaipur

Thyssenkrupp India Pvt. Ltd. ( Bangalore ) – 2015
 Arwachin International - Dilshad Garden

ASF Insignia Pvt. Ltd. ( Gurgaon ) – 2016
 Arwachin World School - Dasna - Masuri - Gaziabad

Gateway of India ( Mumbai ) – 2017
 Arwachin Play School - Bhopra - Gaziabad
Hudda City Centre Metro Station ( Gurgaon ) – 2017
 KW6 Mall - Rajnagar Extension Gaziabad
York Design ( Qatar ) - 2015
 Partiage & Advocates - Bangalore

Nurturing Green Plantation Pvt. Ltd. ( Noida ) Titan - Koramangla Bangalore
Volkswagen ( Faridabad ) – 2013
 Maruti Suzuki India Limited - Siliguri

Park INN ( New Delhi ) – 2013
 Jim Corbett National park - Ram Nagar
Park Plaza ( Chandigarh ) – 2016
 Indian Railways - Bhopal
American Embassy ( New Delhi ) - 2016
Compass System India Pvt. Ltd. ( Noida ) - 2017
Hi- Tech Engineers ( Ghaziabad ) – 2015
Bestech Pvt. Ltd. ( Gurgaon ) – 2016
Taj Engineering ( Nagpur ) – 2016
Oxirich Construction ( Noida ) - 2016
GMR – ( New Delhi ) - 2016

LA City – ( Dehradun )
Gujarat Bhawan ( New Delhi ) – 2017

Canvas Design ( New Delhi ) – 2016

Welspun Pvt. Ltd. ( Bhuj – Gujarat ) – 2016

Wizcraft International ( Gurgaon ) – 2016

Mauritius Embassy ( New Delhi ) – 2016

The Lalit hotels Pvt. Ltd. ( New Delhi ) – 2016

Indian Institute of Art and Design ( New Delhi ) - 2017

CURVE LOOK FORWARD TO WORKING WITH YOU.

CURVE STRUCTURE PVT. LTD.
G-30, 3rd Floor, Lajpat Nagar,
New Delhi 110049
Email : curvestructures@gmail.com
Call. : 9027685063 | 9840297320