Spider System

With constant development in science and technology, glass curtain walls are finding increasingly more applications and their structures are also experiencing great changes. Fully spider fitting frame-less glass curtain walls, connect glass together in an open space using various types of light/heavy steel structures via various types of spider fitting members to form flexible and unobstructed glass facade. In this way, fully spider fitted glass walls not only maintain the safety of aluminum alloy frame glass curtain wall but also eliminate the disadvantages of the later in singular structure and restrictions from construction structures. As a result they provide unobstructed view as a whole, neat, bright and integrated with such advantages as safety, practicality and artistic taste thus becoming a vogue for modern construction and decorations.


Thermally toughened or tempered glass panels are used as single or insulated glass units. In case of single panels laminated safety glass is preferred due to safety reasons. This system consists of a number of accessories with metal arms. At the end of each arm, a sheet of glass is fixed by the corners with a special screw. The vacuum between these sheets is filled up with isolators to overcome mechanical pressure and weather conditions.


The rectangular glass sheets have 4 or 6 countersunk drilled holes into which countersunk stainless steel bolts acting as point-fixings. The space between the glass panes are filled with weather seal. The support elements that hold the fitting can be space frame, glass fin, tension cables or steel circular columns to provide the aesthetic effect as desired by the customer.

spider system

ministry of education headquarters building 3

The Ministry of Education Headquarters Building

The production for Project: The Ministry of Education Headquarters Building is going well.

So far,4 full 40′ containers have been shipped out.

Check below pictures for super clear tempered glass with colorful paintinglaminated coloful glasscaremic firt glass.

ministry of education headquarters buildingministry of education headquarters building 1

u value or k value

U-Value or K Value

Describes the rate of Thermal energy passing through a material due to conduction, convection,

and radiation under specific environmental conditions.

It is calculated using material thermal conductance and surface emissivity values

which are intrinsically measured.

Lower values describe lower rates of heat energy transmitted through a material

and hence improved insulation values.

For glazed areas, the surface emissivity of glass can be dramatically reduced

by high performance coatings and this is a major factor in reducing this value.

U-Value is expressed in units of Btu/hr ft² °F, K-Value in W/m² °C

and different standardized conditions are used for these calculations.

To convert imperial to metric values multiply by 5.6783

u value or k value

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What is SC?

glass What is the shading coefficient?

A measure of the ability of a window or skylight to transmit solar heat.

One of the important data for glass low e coating.


The shading coefficient is expressed as a number without units between 0 and 1.

The lower a window’s solar heat gain coefficient or shading coefficient,

the less solar heat it transmits, and the greater is its shading ability.


The solar factor (total transmittance) of a glass configuration is relative

to that of 3mm clear float glass (0.87) and is used as a performance comparison.

The lower the shading coefficient number, the lower the amount of solar heat transmitted.

The short wave shading coefficient is the direct transmittance (T) of the glass as a factor

of the solar factor or total transmittance (g or TT) of 3mm clear float glass (T ¸ 0.87).

The long wave-shading coefficient is the internally re-radiated energy that the glass has absorbed as glass.

It is determined by subtracting the direct transmittance from the solar factor (total transmittance)

of the subject glass and then dividing by the solar factor ( total transmittance)

of 3mm clear float glass (g-T ¸ 0.87).


Shading coefficient for buildings


It is typically used to describe the solar heat transmittance properties of glass, but has also been used for other translucent and transparent materials.


Solar transmittance is important for determining the solar heat gain into an enclosed space during sunny conditions. Solar heat gain can be beneficial in the winter, as it reduces the need for heating, but in the summer it can cause overheating.


The total solar heat transmittance is equal to the solar heat that is transmitted through the material directly, plus the solar heat that is absorbed by the material and then re-emitted into the enclosed space.


Shading coefficients can be measured using an illuminated hot box under simulated summer and winter conditions, and from these values, solar heat gain under a range of different conditions may be predicted using known data about solar heat gain through standard clear float glass. This enables the behaviour of translucent or transparent materials to be predicted under different environmental conditions without having to measure the angular optical properties of every individual material.


Total shading coefficients (TSC) can be broken down into short-wave shading coefficients (SWSC) and long-wave shading coefficients (LWSC).


Manufacturers are now moving towards the use of solar heat gain coefficients (SHGC) or window solar factors (g-values) rather than shading coefficients. These represent the fraction of incident solar radiation transmitted by a window, expressed as a number between 1 and 0, where 1 indicates the maximum possible solar heat gain, and zero, no solar heat gain.


In very approximate terms, the solar heat gain coefficient is equal to the shading coefficient x 0.87.

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Glass Products For The Construction Secto

Glass strongly influences modern architectural design. The creative use of large windows, glass doors, roof lights, and atria, among many other applications, makes buildings and houses bright, airy, inviting and energy efficient.

Uses & applications

The main uses of glass in buildings and houses are, of course, the most obvious and visible ones: facades and windows. Today’s glass products for commercial and residential buildings represent highly developed technologies, nothing like the simple window panes of the past. Light, comfort, well-being, style, safety and security, and sustainability are among the benefits of today’s high-performing windows and glass building facades. The ability to control heat, light, and sound transmission to a high degree enables architects to design buildings that have a greatly reduced impact on the environment and dwellings that are quiet, comfortable and safe. Glass also finds application in interior decoration and furniture.

Glass in residential houses

Glass proves to be a very attractive and modern alternative to other building materials, such as brick, poly carbonate, or wood. The more glass is used, the more natural light enters the home. This makes the home even more pleasant and comfortable, and, with today’s high-tech glass options, this can come at no cost to security, safety, or environmental sustainability.

Glass in commercial buildings

Today’s glass technologies allow large commercial buildings to be energy efficient structures that make the most of natural daylight while protecting the environment and the climate and conserving energy.

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glass fins 4

Glass Fins

glass fins

Glass Fins

Glass fins represent the earliest form of structural glass facade, dating back to the 1950s French Hahn system used at the Maison de la Radio in Paris. Here 2-story glass plates were suspended and laterally stiffened by the use of glass fins set perpendicular to the plates at the vertical joints between them. But it was the Willis Faber & Dumas Building in Ipswich, England that popularized this emerging technology in 1972. In this curving facade designed by Foster Associates, multiple plates of reflective glass are suspended, providing one of the first examples of an entire building facade in frameless glass. This project inspired a diffusion of glass-fin technology in numerous applications throughout Europe and America in the 1970s, and continues to do so today. Glass fin-supported facades still represent one of the most transparent forms of structural glass facades, and are an especially economical solution at lower spans.

glass fins 2

Glass-fin systems are quite simple in concept, utilizing a glass fin set perpendicular to the glass pane at each vertical line of the glass grid. The most challenging aspect of a glass-fin wall occurs when the span is too great to be accommodated by a single piece fin, and a splice detail must be developed to create a fin comprised of multiple glass pieces. Early systems used patch plates to fix the glass and fins together. Spider fittings are frequently used in this application today.

Glass is a transparent material seen by the light reflected from its surface. Thus, transparency in glass-fin walls is often compromised by the banding effect caused by the reflected light from the glass fin’s perpendicular relation to the glass plane. These reflections are highly sensitive to angular variation.

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Typical splice joint detail at the glass fin. Note the drilled point fixings that tie glass to the fin. A thin horizontal tensile element is used here to restrict the back edge of the fin from rotation and lateral buckling.

the next world's tallest tower

The Next World’s Tallest Tower

Dubai Began Building The Next ‘World’s Tallest Tower’ ,they didn’t reveal the height yet. “The Dubai Creek Tower”, plan to complete in 2020.

The Next World's Tallest Tower

Top Five Tallest Buildings In The World By 2016

No.1. Burj Khalifa (DUBAI, UAE)

Burj Khalifa is located in Dubai, UAE. Its construction was started in the year 2004, September.

The Next World's Tallest Tower1

No.2. India Tower (MUMBAI, INDIA)

India Tower is located in Mumbai, India. Its construction was started in 2010.

the next world's tallest tower2

No.3. Shanghai Tower (SHANGHAI, CHINA)

Shanghai Tower is located in Shanghai, China. Its construction was started in November 2008 and it is expected to be completed by 2015.

the next world's tallest tower3

No.4. Makkah Royal Clock Tower Hotel (MAKKAH, SAUDI ARABIA)

Makkah Royal Clock Tower Hotel is located in Makkah, Saudi Arabia. Its construction was started in 2004 and it was completed in the year 2010.

the next world's tallest tower4

No.5. Ping an International Finance Tower Center 1 (SHENZHEN, CHINA)

Ping, an International Finance Tower Center 1 is located in Shenzhen, China. Its construction was started in 2010 and expected to be completed by 2016.

curtain wall system 2

Curtain Wall System

Curtain wall systems are a non-structural cladding systems for the external walls of buildings. They are generally associated with large, multi-storey buildings.

curtain wall system 2


Curtain walls separate the interior from the exterior, but only support their own weight and the loads imposed on them (such as wind loads, seismic loads and so on) which they transfer back to the primary structure of the building. This is in contrast to many forms of traditional construction in which the external walls are a fundamental part of the primary structure of the building.
Typically curtain wall systems comprise a lightweight aluminum frame onto which glazed or opaque infill panels can be fixed. These infill panels are often described as ‘glazing’ whether or not they are made of glass.

curtain wall system 3

Curtain wall systems emerged in the 19th century with the development of large glass panels and became more common from the 1930’s when aluminum was made available as a construction material for the first time. They are now closely associated with the modernist movement and in particular, the international style, which became popular in the middle of the 20th century. This was an ornament-free, stark form of modernism, characteristically by the repetition of units and the extensive use of glass. It is a style that is still in widespread use for tall buildings in cities around the world.

curtain wall facade building glass

The Benefit Of Insulated Glass For Curtain Wall

Top building glass curtain wall is generally with insulated glass, glass is the most thin, easy to heat transfer in building external wall material. Insulated glass with aluminum frame of desiccant through the gap above the aluminum frame that makes the air inside the insulated glass stay dry for a long time, with the excellent insulating performance.
curtain wall facade building glass

High sound insulation: insulated glass can decline of 27-40 decibel noise, 80 decibel traffic noise outside the room, then only 50 decibels.

Eliminate the frost and dew: indoor and outdoor temperature difference is too big, single-layer glass frosting.Insulated glass is due to contact with the indoor air inner glass is affected by the air interlayer, even if the outer contact is very low, also won’t because of the difference in temperature condensation on the glass surface.Hollow glass dew point to – 70 ℃ (excluding rubber strip type insulating glass)

Wind pressure strength increase: curtain wall mainly under wind load, wind pressure resistance become the main indicators of curtain wall.Hollow glass wind pressure strength is 15 times of single piece of glass.

Strengthening The Safety Management In Building Curtain Wall In Shenzhen

Recently, Shenzhen Institute of Architectural doors and windows curtain wall experts issued a document name “on the strengthening of building curtain wall safety management notice.”

The document provides that the curtain wall area greater than 10,000 square meters or curtain wall height greater than 50 meters of the curtain wall project,the construction unit should carry out special safety demonstration for the design scheme during the preliminary design phase.

Construction drawings to comply with the requirements of the curtain wall safety report,The supervision unit shall carry out the national laws, regulations and technical standards on the curtain wall project.

After the curtain wall building is put into use, the person who in charge of the curtain wall safety maintenance shall perform the responsibility for the safety maintenance of the curtain wall according to relevant national standards and ensure the safety of the curtain wall.