4FTBSYS presentation on Building envelopes show casing latest trends,options available today and tomorrow.

1. Design, Develop and Deliver
Technical Presentation- Building Envelope
4FTBSYS PVT LTD

2. 4FTbsys is into façade Consultancy and engineering: Working with different elements of nature
is our passion, making a facade perform and function is our motto.
We have taken upon ourselves the responsibility of making facades functional in terms of
thermal Efficiency apart from many other parameters as a major issue to deal with.
We specialized in pre-tender support, design, engineering, fabrication, assembly, delivery,
installation in Curtain wall, Building envelope(BES) and Roofing systems. With the goal of
environment protection and energy saving, We work on aluminium windows & doors, high-
performance Building Skin Systems (glass, metal panel, stone, HPL, photovoltaic panel,
fabric), skylight and canopy systems, point-fixed systems and cable-net systems,
solar shading systems and metal panel roofing systems, etc.
4FTBSYS makes full use of its advantages in Human resources, technology and supply good
quality, environmental friendly, energy saving curtain wall products and Futuristic materials
to people all over the world for the construction of a fabulous fascia & envelope systems.
Incessantly creating environment friendly and energy saving high grade construction
curtain wall products and decoration materials
4FTBSYS is now bravely facing challenges to be a winner, and has realized great-leap-forward
development, and innovatively solving the environment protection and energy saving issues
in construction of BES. And at the same time makes full use of the green energy resources--
solar energy, maximally decreased the energy expenditure of constructions, and alleviated
the social energy pressure, as contribution to the humankind.
As long as we seize opportunities, unite as one, exploit and create, discard prejudices, with
unanimous goals, we are doomed to make progress together and develop at a very fast
speed. High rises, commercial, residential, retail, hotels & resort, town houses & villas,
factories & ware houses are some of our areas of interest.

3. Vision: to be the best BES Company Delivering values in energy conservation & Generation
Mission: 3D’s –Design, Develop & Deliver –Functional & Sustainable Building Envelopes
Values: 5E’s – Ethics, Environment, Energy, Economics & Efficiency
3S’s – Safety, Sustainability & Society.
Vision is to contribute to the transformation of today's global energy system towards
sustainability including
(a) protection of our natural life support system,
(b) Eradication of energy poverty
(c) Reducing the dependence on regionally concentrated energy resources.
Mission is to be the biggest, most profitable and technologically advanced company with
ultimate focus of delivering values to customers.
Professionalism: Both clients and candidates appreciate our honesty, finding us direct,
trustworthy, professional and genuine. We are an ethical company: we make sound
investment decisions and choose to work with supplier and organizations With a similar;
approach to business.
Ambition: Despite challenging economic conditions, 4FTBSYShas maintained steady growth.
We also made Investments in our global network giving us a strong platform to cater world
class products at Indian prices
Innovation: The brands that make up 4FTBSYS are leaders in their fields and 4FTBSYS is no
exception. 4FTBSYS invests heavily in cutting edge processes and technology to ensure that
we are continuously ahead of the competition.
Passion: We understand your business, your requirements and your culture; ensuring a perfect
match every time,whenever we speak of Functional facades, we actively seek enthusiastic,
inquisitive, passionate and motivated individuals, Because we know that a company is a sum
of all of its parts. That philosophy guides us throughout our business.

4. Our Services
Selecting the best facade can be just as challenging as attracting the right contractor.
That is why 4FTBSYS offers more than just services. We adopt a flexible, consultative approach
to help us understand and support the unique challenges that are faced by each of our
Clients
At 4FTBSYS, we provide our clients with more than just Facade specialists. We provide industry
Specialties.
Our knowledgeable and savvy associates are assigned to develop tailor-made facade solutions
that meets specific professional needs.
We are well positioned to source world’s best solutions from across the globe , covering many a
niche disciplines.

5. Some of our specialist (Not limiting to)
Façade Consultancy : Execution of Complex Building envelopes
 Double skin Facades
 Solar Facades
 Curtain Walls
 Glass Walls
 Cladding Systems- Terra-cotta, Metal, Composites, EIFS, HPL
 Lightweight Tension Structures
 Solid Stone and Masonry Design and Detailing
 Roofing Systems
 Refurbishment, Restoration and Over-Cladding
 Three-dimensional Spatial Modelling and Drawings
 Expanded Metals
 Expert Testimony
 Tensile Fabric
 Thin stone
 Die –electric Film.

6. • Future Trends of Building Envelope system
ENVELOPE SYSTEMS WITH THERMAL BREAK
 A thermal break is also a load-bearing thermal insulation system used in
reinforced concrete structures to form a thermal break between cantilever
structures and internal floor.
 Insulated glazing – the air or gas between the panes stops the conductive
thermal energy from passing through the glass.
 Metal window or curtain wall framing –a separator material is used between
the inner and outer frames to prevent the temperature transfer through the
frame and condensation on the inside frame.
 Concrete work – a single row of concrete masonry units (CMU block) is
commonly set between the inner concrete slab and Exterior concrete work,
to prevent the transfer of heat or cold through the slab.
 Metal and wood framed buildings - an insulation material installed on the
roof, walls and floor prevents thermal Short circuit creating the heat transfer
through the framing material and controls when desired (winter/summer)
Resulting in energy savings
 Metal windows and doors - separating the frame into two separate interior
and exterior pieces joined with a less conductive material reduces
temperature transfer.
 Thermal breaks (made of substantially rigid, low thermal conductive
polyurethane which is mechanically locked in aluminium window framing
can be more than a thousand times less conductive than aluminium and a
hundred times less than steel.
 Windows and doors - separating the frame into 2 separate interior and
exterior pieces joined with a less conductive material between reduces
temperature transfer. In addition thermal breaks can have the added benefit
of reducing sound transmittance by dampening vibration
Warm Edge Spacer Warm Edge Bend

7. Warm Edge Spacers
Warm Edge Technology is a term given to a slightly different type of spacer bar, the term warm edge is based
on the fact that the construction is fabricated and designed to conduct less heat or cold than the
traditional spacer tube used in standard sealed units.
Traditional standard sealed units are manufactured using an aluminium edge which holds the two glass panes
apart at a predefined gap, as aluminium efficiently conducts heat or cold this can lead to higher levels of
thermal loss, and a reduction of energy efficiency. Up to 80% of the energy in a standard glass unit can be
lost at the unit's edge.
For comparison purposes double glazed sealed units fabricated using a warm edge spacer bar can have a
warmer internal edge temperature of up to 65%, reducing the risk of condensation by up to 70% and
increasing thermal efficiency.
The reduction in moisture achieved by using a warm edge on your sealed unit reduces the chance of mould
growth and other potentially harmful bacteria, and can be an important consideration for those that suffer
from respiratory conditions such as asthma.
End User Benefits :
 Reduces energy bills through less heat loss.
 Reduces condensation inside when compared to standard units.
 Minimal frame damage from fungus.
 Helps improved indoor climate.
4F Ultra ® is a warm edge spacer bar solution designed to meet or exceed the specifications required in the
manufacture of energy rated sealed units. The unique combination of stainless steel outer with plastic top
allows the unit corners to be formed in a bender. While the plastic is flexible the stainless steel remains
rigid, it gives excellent corners and straight sides on the frames while offering a low thermal transmittance.
Corner connection is achieved by utilising bespoke push-fit corner keys, and the use of Staple fittings ensures
no cracking. 4fTherbar ™ is available with or without a unique gas barrier tape specifically designed to
accommodate sealed units that contain a filler element.

8. Aluminium spacer bar are available in Black, White, Native, Brushed, Gold and Brass Colour options
The Super Spacer referred to as warm edge technology, has little or no effect on the centre of glass U value or
insulation, often referred to in the specification of double glazed units.
Super Spacer incorporates a drying agent which absorbs any moisture present in the air or gas in the cavity
between the glass. The structural foam nature of the extrusion also enables shaped units, particularly
circular shapes to be manufactured, without the use of the bending process necessary for aluminium
spacer.
Every window is a thermal bridge and it is important to select materials with less
conductivity.
The construction of 4F Double Glazed Units with Super Spacer ensures that there is no cold
perimeter bridge and has little or no effect on the centre of pane U values or insulation
properties of 4F Double Glazed Units. However the perimeter insulation value can be
affected by the perimeter conductivity of window frame materials particularly metal or
aluminium with a thermal conduction rate of 0.4 w/mk. One of the best window frame
materials with a very low thermal conductive rate is timber, around 0.16.
For this reason Super Spacer edge technology is now becoming more extensively used in the
UK manufacture of Double Glazed Units and has the important effect of ensuring that there is
no significant temperature differential from centre to edge of unit.
It is generally accepted that warm edge spacer when used in 4FTBSYS construction will ensure
that the difference in insulation between the centre and edge of the unit is almost nil.

9. What are energy ratings?
WER-Window Energy Ratings are designed to offer a guide as to the energy performance
of a given component or collection of components within a window system.
The British Fenestration Ratings Council or (BFRC) operate the window energy rating
scheme, and it is designed to check all the components to ensure the final window
achieves the energy efficiency standard claimed.
India is shortly expected to have a rating system.
Special WER Simulations are carried out in order to produce a component within the grading system, The
grades range from A-G, with A being the best energy efficient performer and G the worst energy efficient
performance. When these components are combined within another WER Simulation an overall energy
rating can be achieved.
While this system it is intended to offer a simple consumer guide to the energy efficiency of a window it
is important to remember that each component must be of a similar rating in order to achieve the
overall result.
As an example, if your window's sealed units carry an 'A' rating for their energy performance, and these
units are placed into a frame of very low performance say 'E' rated, it is not possible for the final
installation to be 'A' Rated.
To ensure an 'A' Rating the components in the entire system should be of similar rating values, and a
WER simulation run to obtain the ever all rating.
Here at 4FTBSYS Pvt Ltd, we can supply different rated sealed units to match those required for your
installation, and each unit we manufacture is given an appropriate rating sticker for your
information.*(subject to conditions)
As of 2010 Building Regulations (in UK)Part 'L' require all new homes, and domestic replacement
windows to have a minimum 'C' or above Window Energy Rating (WER).
Exceed the minimum...
4FTBSYS are a registered firm. We can not only provide energy rated double and triple glazed sealed
units to the minimum C rating, but using our Partner products can provide A rated units helping to
further protect the environment and your pocket. Why settle for the minimum?
when you can supply the max.

10. Warm edge vs. Aluminum spacers
Insulating glass units, or double-glazed units, are one of the most common
types of glass used today for building applications. Patented as far back as
1865, IG units were implemented in architectural applications after the World
War II. Due to their excellent thermal and acoustic properties, they have
almost completely replaced basic monolithic windows.
Over the decades IGU?s thermal performance has been upgraded with the
introduction of low-emission coatings and gases with a low thermal conductivity.
Attention was then turned to the edges to further reduce thermal losses caused by
highly conductive material.
Today the most common type of IG unit is composed of two pieces of glass and a
hollow aluminium spacer around the edge of insulating glass. The hollow spacer
contains a moister-removing desiccant agent. The major benefits of aluminium
pacers are: lightweight, durability and relatively low cost. The dawn back of this
spacer is aluminium conductive properties, which sometimes cause that the edges
of the glass could lose more heat than the center of the glass.
To overcome this limitation, the glass industry developed so-called low-conducting spacers or
warm-edge spacers. These are designed to improve the thermal performance of the windows,
reduce condensation, and with the appropriate machinery, permit faster and easier assembly of
insulating glass units. There have been several attempts to place these products on the market.
However as it turns out the anticipations were too big as the warm edge spacers are more
expensive and have in comparison with classical aluminium spacer a very small IG U-value
improvement.
When new discussions were held regarding energy-saving legislation in Europe in 1997, interest
in low-conductive spacers increased. There are several low-conductive spacers on the market
today, however due to the above mentioned fact the classical aluminium spacer remains the
number one choice for IG applications.

11. Benefits: Energy & Cost Savings
The following information is an example of energy and cost savings
Heating Season Savings
In climates with a significant heating season, windows have represented a major source
of unwanted heat loss, discomfort, and condensation problems. In recent decades,
windows have undergone a technological revolution. It is now possible to have
lower heat loss, less air leakage, and warmer window surfaces that improve comfort
and minimize condensation. The graphs below illustrate the simulated savings in
heating season costs associated with energy efficient windows for a typical house in
a heating-dominated climate. The savings shown do not include possible savings
from reduced air leakage. Depending on the condition of the old windows in an
existing home, the savings can be higher if window replacement leads to long-term
air leakage reduction.
Cooling Season Savings
In climates that mainly require cooling, windows have represented a major source of
unwanted heat gain. In recent years, low-E coatings that reject solar heat without
darkening the glass have undergone a technological revolution. It is now possible to
significantly reduce solar heat gain and improve comfort while providing clear views
and daylight. The graph below illustrates the simulated savings in cooling season
costs associated with improved windows for a house in a cooling-dominated
climate. The savings shown do not include possible savings from reduced air
leakage. Depending on the condition of the old windows in an existing home, the
savings can be higher if window replacement leads to long-term air leakage
reduction.

12. • Low-e benefits
It's been two decades now since low-e was first introduced to the market. Nobody
questions its excellent thermal performance; yet insulating glass with low-e
coating is rarely used in construction. 4FTBSYS would like to remind you about the
benefits and the cost savings achieved by using low-e glass
During the energy crisis of the 1970's the whole world was determined to reduce the
natural resource consumption. The major problem in case of glass was the significant
heat loss through the glazing surface. The consequence was a lot of wasted energy and
money. In 1980 the commercial development of thin, transparent, low emissive coatings
literally revolutionized the concept of energy savings in windows. The low-e coating,
placed on the inside of the insulating glass unit, enables the sun's short-wave energy to
enter the room and at the same time prevents internal warm air from leaving the room.
To know more about the benefits, energy and money savings take a look at the related
links on the web which we have prepared for you.

13. Solar Cells-Possible combinations cell-type and cell distances

15. Solar Power : Clean Power
We have been using solar energy for various application viz., heating, cooking,etc 4ftbsys is among the first in
India to think of solar Façade application .
Photo voltaics (PV) use solar cells to convert the sun’s energy into electricity. When sunlight hits the
semiconductors (solids, such as silicon, that conduct (electricity) in the solar cells, an electrical charge is
generated. The different types of PV include: Mounted PV: panels that are mounted on the roof or walls of
a building or on the ground. Building-integrated photo voltaic BIPV) are photovoltaic materials that are
used to replace conventional building materials in parts of the building envelope such as the roof,
skylights, or facades. They are increasingly being incorporated into the construction of new buildings as a
principal or ancillary source of electrical power, although existing buildings may be retrofitted with similar
technology. The advantage of integrated photo voltaic over more common non-integrated systems is that
the initial cost can be offset by reducing the amount spent on building materials and labour that would
normally be used to construct the part of the building that the BIPV modules replace. These advantages
make BIPV one of the fastest growing segments of the photovoltaic industry. The term building-applied
photo voltaics BAPV) is sometimes used to refer to photo voltaic that are a retrofit - integrated into the
building after construction is complete. Most building-integrated installations are actually BAPV. Some
manufacturers and builders differentiate new construction BIPV from BAPV.
Building Integrated PV (BIPV): light, flexible, thin sheets of PV that are laid over a thermoplastic roof. Thin film
PV is cheaper but less productive than mounted PV. Tiles: Some manufactures tiles that can be integrated
into a roof and look like traditional roofing tiles. Lamps & Bus Shelters: Street lamps and bus shelter lights
run by solar panels are another option for solar installations.
Costs : Solar facade/Roof top
Costs vary for PV systems, but in general, flat roof mounted PV costs about Rs 75-80/kWh over a 20 year time
period (this includes rebates but not the selling of RECs).Generator’s greenhouse gas inventory, and the
building cannot claim to be “green powered.” However, selling RECs can make project finances much more
attractive. One option is the Mass Energy Renewable Energy Certificate Incentive which purchases PV RECs
for Rs 18/kWh. (approx. may change as per state's Solar policy)

16. Latest Trends in Europe
Double Skin Systems:- The Double-skin facade is a system of building consisting of two skins placed in such a
way that air flows in the intermediate cavity. The ventilation of the cavity can be natural, fan supported or
mechanical. Apart from the type of the ventilation inside the cavity, the origin and destination of the air
can differ depending mostly on climatic conditions, the use, the location, the occupational hours of the
building and the HVAC strategy. The glass skins can be single or double glazing units with a distance from
20 cm up to 2 meters. Often, for protection and heat extraction reasons during the cooling period, solar
shading Devices are placed inside the cavity.
Vacuumed Glazing:- Ultra-Slim Vacuum Glazing for Optimum Thermal Insulation
With the proposed tightening of energy-saving regulations, today’s windows with
conventional double glazing and Ug values of 1.0 W/m²K will no longer meet thermal-
insulation requirements in a few years. Triple glazing provides adequate insulation values
(with an argon filling and two low-E layers, for example, Ug = 0.7/Wm²K), but it results in a
50 per cent greater weight and large system thicknesses of between 30 and 50 mm.
Vacuum insulation glazing marks a new approach. Whereas the insulation effect at the
transition from double to triple glazing is the outcome of greater system thicknesses, in
the case of vacuum glazing a genuine qualitative improvement is achieved by obviating
the thermal conduction caused by the gas in the cavity between the panes. Using this
form of construction, even with double glazing, excellent insulation values of Ug =
0.5/m²K can be achieved with system thicknesses of less than 10 mm.

17. Highly insulating window for the future-Vacuume Glazing
Technically speaking, the production of vacuum insulation glazing depends on
evacuating the gas from the cavity between the panes and thus reducing the
pressure to levels below 10-3mbar. As a result of the external atmospheric
pressure that is caused by the evacuation of the cavity, the panes of glass are
subject to a load of 10 tonnes per square metre. To prevent the panes being
pressed together, small supports or spacers must be incorporated at regular
intervals in the barely 1 mm cavity. With the support of the BMWi, German
partners from the realm of research and industry recently developed an
alternative concept for the edge fixing with vacuum insulation glazing, as a
result of which large-scale, cost-effective technical production is almost
within reach. This concept foresees the use of layers of metal foil, which are
applied to the panes of glass in a cold soldering process that avoids damaging
the sensitive low-E layers.
Vacuum Glazing Could Emerge as
"Game Changing Technology"

18. Safety: A Core Cultural Value
The most valued asset at 4ftbsys is our people, and nothing is more important than providing them a safe
environment in which to work. The health and safety of our people is beyond a priority for us, it is a core
value deeply rooted in our culture and reflected in every aspect of operations. It is an all-pervasive
mindset that embeds considerations of workplace safety, employee wellbeing, and environmental
protection in every employee action. Our goal is nothing short of zero incidents on all of our worksites
each and every day. We believe that such performance is achievable with the uncompromising
commitment and diligence of every 4ftbsys employee in everything we do.
Jobsite Safety
The biggest challenge for any construction company is the work that takes place on the jobsite, and it is on
this demanding playing field that 4ftbsys most clearly differentiates itself. In addition to training our
people in the discipline of relentless diligence as a means to optimum operational safety, we fine-tune our
planning, strategies and tactics to the unique requirements of each individual facade building project we
undertake. We have developed a unique expertise over decades of experience in cladding some of the
most challenging building projects ever constructed. This experience has been documented in a concise
compilation of best practices with respect to the operational safety of custom facade system installation,
yet we know that each project presents a unique scenario to be analyzed and potential challenges
anticipated. Drawing upon this deep accumulation of experience, we craft a custom safety plan in direct
response to each specific project context.
Means and Methods Site Safety Plan
A Means and Methods Installation Plan specifically crafted for each project undertaken by 4ftbsys is
accompanied by a separate Site Safety Plan. This plan details the measures and practices that will be
instituted to assure site safety throughout our facade installation activities. The compilation of the Site
Safety Plan is a well known choreographed process among site operations managers, a process in which
every site activity is identified and assessed for safety risk. Specific strategy is detailed to mitigate risk, and
personal protective practices and equipment are specified.
A Living Document
Our Site Safety Plan is no 300-page tome that is quickly parked on a top shelf to gather dust. It is a concise
document that is constantly referenced and utilized in lockstep with our other site planning documents.
The practices, methods and procedures detailed within are fully integrated into our daily activities.
The Measure of Safety
Most of us know by now that what gets measured is what gets done. 4ftbsys has gone to extraordinary
lengths to document all aspects of performance with respect to safety, and to use this as feedback to our
operations groups. In addition, all of our people are fully aware that safe practice is among the top criteria
when it comes to project and personal performance evaluation.

19. Façade Testing ( Done by third party on request)-Fee Applicable
Type of Test Standard
Air permeability BS EN 12153:2000
Water tightness BS EN 13051:2001
Water tightness under static pressure BS EN 12155:2000
Resistance to wind loading BS EN 12179:2000
Field Hose Test AAMA 501.2:1994 CWCT Section 7
BS EN 13051 - Curtain walling-Water tightness-Site test
BS EN 12153, 12155 and 12179
Used together, these standards provide a complete sequence of testing for air permeability, static
water penetration and wind resistance to curtain walling and are a combination of earlier BS
window tests and CWCT curtain walling tests.
On Site Test (Field Test)
Field Water Penetration Test - AAMA 501.2
Field Structural Test for Anchors- ASTM E 488
Acoustical analysis at site

20. Why is testing required
To check performance of system design.
To check performance of fabrication construction.
To check performance of installation construction.
The system behaviour under design load condition.
The system behaviour under 1.5 times design load condition considering wear and tear in a building life
span.
To avoid performance disasters: Structural failure, air & water leakages, panel deflections exceeding limits.
Structural stability of system as a whole.
Modern Buildings : Higher Risks
Modern facades are complex .
Combination of different materials with different properties and performance requirements.
Engineered to weather, structural loads, building & thermal movements, thermal & acoustic and safety &
comfort hence possible mistakes and errors.
The cost of rework in case of performance failure is 2 to 3 times of the original cost .
Loss due to building non occupation, damage to interiors and valuable properties & safety of people.
By testing of system, materials and workmanship at various stages the risks can be eliminated and client is
at peace.
Cost components
Normally the cost of façade is about 15 - 18 % of total building cost.
The façade envelop to the building is about 90%. Therefore higher performance responsibility. Hence
critical.
The cost of specialist agency for testing is about 1 % of total façade cost.
Façade testing is absolutely value for your money.

21. Gallery:- Some of our previous projects

22. Summary:-
An Architect says he needs a make the Taj Mahal, We at 4FTBSYS PVT LTD
offer which material to use , how to execute to obtain optimal efficiency.
Being a firm concentrating into Energy efficiency we love doing the rite
thing at rite place.
Today India certainly doesn’t have a façade draft-policy but, we at 4FTBSYS
always work for your tomorrow by providing best of services at all times.
Thanks for your time and Patience.