Category Archives: Tekla Training

Beam-to-column connections

These styles of connections are common as they need the ability to supply for minor changes while using un torqued bolts in a pair of millimetre clearance holes. Un-remarkably the cleats are utilized in pairs. Any easy equilibrium analysis is appropriate for the look of this kind of connection. The bolt cluster connecting the cleats to the beam net should be designed for the shear force and therefore the moment made by the merchandise of the top shear and therefore the eccentricity of the bolt cluster from the face of the column. The bolts connecting the cleats to the face of the column ought to be designed for the applied shear solely.The cleats to the column are seldom vital and therefore the style is sort of forever ruled by the bolts pertaining to to the net of the beam. The move capability of this affiliation is ruled mostly by the deformation capability of the angles and therefore the slip between the connected elements. Most of the rotation of the connections comes from the deformation of the angles whereas fastener deformation is extremely little. To minimise move resistance (and increase move capacity) the thickness of the angle ought to be unbroken to a minimum and therefore the bolt cross-centres ought to be as giant as is much potential. Once connecting to the axis of a column it’s going to be necessary to trim the flanges of the beam however this doesn’t amendment the shear capability of the beam. throughout erection the beam with the cleats hooked up is lowered down the column between the column flanges.
Single angle net cleats :Single angle net cleats are un remarkably solely used for little connections or wherever access precludes the employment of double angle or end-plate connections. This kind of affiliation isn’t fascinating from Associate in Nursing erector’s purpose due to the tendency of the beam to twist throughout erection. Care ought to be taken once victimisation this kind of affiliation in areas wherever axial tension is high. The bolts connecting the cleat to the column should even be checked for the instant made by the merchandise of the top shear force and therefore the distance between the bolts and therefore the centre line of the beam. Flexible end-plates :These connections encompass one plate fillet welded to the top of the beam and web site fastened to either a supporting column or beam. This affiliation is comparatively cheap however has the disadvantage that there’s no area for website adjustment. Overall beam lengths got to be unreal at intervals tight limits though packs are often accustomed make amends for fabrication and erection tolerances. The end-plate is usually elaborated to increase to the total depth of the beam however there’s no got to weld the end-plate to the flanges of the beam. typically the end-plate is welded to the beam flanges to boost the steadiness of the frame throughout erection and avoid the necessity for temporary bracing. this kind of affiliation derives its flexibility from the employment of comparatively skinny end-plates combined with giant bolt cross-centres. Associate in Nursing eight millimeter thick end-plate combined with ninety millimeter cross-centres is typically used for beams up to or so 450 millimeter deep. For beams 533 millimeter deep and over a ten millimeter thick end-plate combined with a hundred and forty millimeter cross-centres is usually recommended. The native shear capability of the net of the beam should be checked and, owing to their lack of plasticity, the welds between the end-plate and beam net should not be the weakest link. Fin plates: The introduction of the fin plate is primarily to transfer beam finish reactions and is economical to fabricate and easy to erect. There’s clearance between the ends of the supported beam and therefore the supporting beam or column therefore making certain a simple work. These connections comprise one plate with either pre-punched or pre-drilled holes that’s search welded to the supporting column projection or net. considerable effort has been invested with in making an attempt to spot the acceptable line of action for the shear. There are 2 prospects, either the shear acts at the face of the column or it acts on the centre of the bolt cluster connecting the fin plate to the beam net. For this reason all vital sections ought to be checked for a minimum moment taken because the product of the vertical shear and therefore the distance between the face of the column and therefore the centre of the bolt cluster. The vital sections are then checked for the ensuing moment combined with the vertical shear. The validation of this and different style assumptions were checked against a series of tests on fin plate connections. The results of those tests ended that the look approach was conservative and gave adequate predictions of strength. The tests conjointly showed that fin plates with long projections had a bent to twist and fail by lateral torsional buckling. Fin plate connections derive their in-plane move capability from the bolt deformation in shear, from the distortion of the bolt holes in bearing and from the out-of-plane bending of the fin plate. tekla design

Erection of Steel

Erection of Steel

Erection of steel structures is that the method by that the fictitious structural members are assembled along to create the structure. The erection is generally distributed by the erection contractor. The erection method needs right smart coming up with in terms of fabric delivery, material handling, member assembly and member affiliation. Correctly coming up with of fabric delivery would minimize storage demand and extra handling from the positioning storage, significantly significant things. Erection of steel work might be created safe and correct if temporary support, false work, staging etc. are erected. Before erection the fictitious materials ought to be verified at web site with relation to mark numbers, key arrange and shipping list. The structural parts received for erection ought to be stacked in such some way that erection sequence isn’t affected because of improper storing. Care conjointly ought to be taken in order that steel structural designing parts shouldn’t are available in contact with earth or accumulated water. Stacking of the structures ought to be exhausted such some way that, erection marks and mark numbers on the parts square measure visible simply and handling don’t become tough. a spread of ways may be utilized for the erection of a structure. Normally, the choice of the strategy is influenced by the sort of the structure, web site conditions, equipment, quality of ball-hawking labour, etc. obtainable to the erector. However, notwithstanding the strategy adopted the most aim throughout erection is that the safety and preservation of the soundness of the structure the least bit times. Most structures that collapse do thus throughout erection and these failures square measure fairly often because of an absence of understanding on someone’s a part of what another has assumed regarding the erection procedure. Before the commencement of the erection, all the erection instrumentality tools, shackles, ropes etc. ought to be tested for his or her load carrying capability. Such tests if required could conjointly be recurrent at intermediate stages also. Throughout the complete erection, the steel work ought to be firmly fast or otherwise mounted and braced to require care of the stresses from erection instrumentality or the hundreds carried throughout erection. additionally to the current, adequate provisions to resist lateral forces and wind masses throughout erection ought to even be created consistent with native conditions. Unremarkable bracing are engineered into every type of structures to grant them a capability to face up to horizontal forces made by wind, temperature and also the movements of crane and different plant in and on the building. Bracing may be permanent or temporary. Temporary bracing needed at some stages of the work should have properly designed connections and will be specifically cited within the erection technique statement. the choice on sequence of erection like that member ought to be erected 1st for providing initial stability to the structure or whether or not temporary bracing ought to be used for this purpose ought to be taken at AN early stage of designing of the erection method. Any miss-alignment at initial stage can impair the performance, of the structure once completed. Early or unauthorized removal of temporary bracing could be a common reason for collapse in an exceedingly part completed frame. once having thought-about the requirement for putting in temporary bracing and also the ought to delays fixing permanent bracing, thought ought to run to the general economy of holding the temporary bracing and maybe deed out the permanent bracing . It is a pricey and doubtless dangerous business to travel into a structure entirely so as to require out temporary members, or to insert parts that had to be unnoticed quickly.

Corrosion of Steel

Corrosion of Steel

Reinforcing steel corrosion is one of the most serious deterioration mechanisms in reinforced concrete structures and is also an important issue that needs be considered when evaluating and rehabilitating RC structures. Fortunately, there are two self-defense mechanisms that can be employed to protect reinforcing steel against corrosion ,physical protection provided by the dense and relatively impermeable structure of concrete and chemical protection provided by the high alkalinity of the pore solution. The first mechanism involves concrete of sufficient depth and good impermeable quality. The second one is a thin oxide covering that forms around reinforcing steel bars due to the high alkalinity of pore solutions, which contain high concentrations of soluble calcium, sodium and potassium oxides, in freshly mixed concrete. However, the random distribution of pore spaces suggests that aggressive substances such as chloride, carbon dioxide, oxygen, moisture, etc. may penetrate through weak points in the concrete cover trigger the corrosion of reinforcing steel bars in concrete and finally induce cracking of the concrete. The aggressiveness of the environment is a very important factor to consider when examining concrete that shows signs of possible distress Generally, corrosion attack is initiated either due to the carbonation of the concrete or due to diffusion of the chloride ions to the reinforcing steel bar surface or both. On account of different aggressive mechanisms, the corrosion due to concrete carbonation is much more uniform than that caused by chloride attack and, hence, it is much less susceptible to local attack .On the other hand, corrosion of reinforcing steel structural course in kerala and the consequent cracking of concrete due to the ingress of chloride ions to the reinforcing steel bar surface is more than that due to carbonation of concrete. Not only will corrosion affect the load-carrying capacity of the reinforcing steel bar, but it may also impair its ductility, which presents a serious problem for the safety of old and monumental constructions in seismically active areas. A lot of research has been done to the corrosion of reinforcement in RC, dealing with various issues related to the configuration of corroded reinforcing steel bars, the load– displacement relationship, residual strength, ductility, etc. The effect of reinforcement corrosion on the residual strength has been of great interest. The ductility of reinforcing steel is normally represented by two parameters, the ratio between the yield and the total strengths and the elongation ratio. The elongation ratio is the average strain of a corroded steel bar in its gauge length. The elongation ratio associated with a shorter gauge length is much greater than that of a greater gauge length and the gauge length was taken as five times the initial diameter of the steel bar . The elongation ratio decreases with increased corrosion level, although the rates of decrease are different for steel bars corroded in simulated solutions and those corroded in concrete. For the steel bars corroded in simulated solutions the decrease rate is about 0.2, which represents a moderate loss of ductility as corrosion increases; for the steel bars corroded in concrete , the decrease rate is about 0.8, which represents a drastic loss in ductility as corrosion increases. The contribution of the highly localised peak strain does not provide a correspondingly large contribution to overall elongation (Cairns et al., 2005); therefore, the steel bars corroded in concrete present a lower elongation ratio than those corroded in simulated solutions for the same cross-sectional loss. The reinforcing steel bars subjected to local or pitting attack may suffer a significant loss of ductility. As far as the fracture pattern is concerned, fracture of the reinforcing steel bar usually occurred at pitted sections and usually happened with a less ductile fracture when the notch was wide and deep.


Prefabricated construction could be a new technique and is fascinating for big scale housing programmes. The main aim of prefabrication are :

1) To impact economy in value

2) To boost in quality because the elements is factory-made below controlled conditions.

3) To hurry up construction since no hardening is critical.

4) To use domestically on the market materials with needed characteristics.

5) To use the materials that possess their innate characteristics like lightweight weight,easy workability, thermal insulation and combustibility etc.

Need for Pre fabrication

1. Ready-made structures square measure used for sites that aren’t appropriate for traditional

construction technique like cragged region and additionally once traditional construction

materials aren’t simply offered.

2. PFS facilities may be created at close to a site as is finished to form concrete blocks

used in plane of standard knick.

3. Structures used repeatedly might be standardized .


  • Readymade elements are used
  • Shuttering and staging is greatly reduced.
  • Construction time is reduced and buildings ar completed sooner permitting on
  • Earlier come back of the capital invested with.
  • On-site construction and congestion is reduced.
  • Internal control is easier during a plant mechanical system setting than a construction and Site setting.
  • Manufacture is placed wherever expert labour, power materials house and
  • Overheads are lower.
  • Time spent in weather or dangerous environments at the development web site is minimised
  • Materials for staging is keep partially or fully and used
  • Accessibility of precise structure and expect acquisition.
  • The Time Period is reduced.
  • Fewer enlargement joints are needed.
  • Interruptions in connecting is omitted.
  • Work is completed with a higher technology.
  • Less employees are required.


  • Careful handling of ready-made elements like concrete panels or steel and
  • glass panels is needed.
  • Attention must be paid to the strength and corrosion-resistance of the change of integrity of
  • prefabricated sections to avoid failure of the joint
  • Equally leaks will generate at joints in ready-made elements.
  • Transportation prices could also be higher for voluminous ready-made sections than for
  • the materials of that they’re created which might usually be packed additional with efficiency.
  • Giant ready-made structures need heavy-duty cranes measurement and handling to position in position.
  • Giant teams of buildings from identical style of ready-made components tend to
  • look drab and monotonous.
  • Native Jobs area very less

Prefabricated building parts are utilized for buildings that are factory-made off

site and shipped later to assemble at the ultimate location a number of the unremarkably used

prefabricated building. The materials employed in the ready-made parts area several.

The modern trend is to use concrete steel, treated wood, metal cellular concrete,

light weight concrete, ceramic product etc. whereas selecting the materials for

prefabrication the subsequent special characteristics area unit to be thought-about.

  • light-weight
  • Thermal insulation property
  • simple workability
  • sturdiness altogether climatic conditions
  • Non combustibility
  • Economy in price
  • Sound insulation

In the olden days building a house was by the use the bricks, timber, cement, sand, steel and construction mixture etc and to construct the house on site from these materials. In ready-made construction solely the foundations are created during this method. While sections of walls floors and roof ar ready-made structures with windows and door frame enclosed and transported to the positioning upraised in to position by a crane and stewed along. tekla structural steel designing courses in kochi author

Developments in the Steel Market

Developments in the Steel Market

Steel is usually used by the industrial sector and the demand for steel often leads the cycle in industrial production. The demand for steel grew only during the year of 2016, In the initial 10 months of 2016, the monthly consumption indicator for the major steel-consuming economies increased by approximately 1.9% There is an improvement in the market and demand for steel is expected to increase this year and possibly in the coming few years, according to the market analysts. This shows expectations of expansion of fiscal policy by the new US Administration, including corporate and personal tax cuts and actions to raise steel-intensive infrastructure investment. Major energy project are also being expedited, and the recent revival of two major oil pipeline projects would add demand for steel tubular goods. Canada’s recent approval of energy pipeline projects will also support demand and production of the country’s steel sector going forward.

In India steel demand has increased in a favorable manner being nearly double over the past decade or so. Steel demand has increased nearly 5% per annum in the last few years, supported by the infrastructure and a series of consumption and investment-boosting reforms, including the “Make in India” initiative which has led to increased FDI. In the recent months the demand for steel may have been effected due to the cash shortage associated with the move to demonetize certain currency notes, but strong GDP growth in the fourth quarter of 2016 suggests that the effects may have been more muted than expected. Over the longer term, steel usage will continue to grow to be a favorable one in India, with per capita consumption converging towards higher world average levels . Within Asia, demand growth has been fastest in economies located in Southeast Asia. A report that was released by the South East Asian Iron and Steel detailing Institutes in March 2017, shows that ASEAN steel demand expanded by almost 13% in 2016, rising to a level of 78 million tonnes. Most economies in the region have posted a double-digit steel demand growth, but Vietnam had the highest growth at 20%. That country’s steel association expects significant growth in steel production over the long term, as local producers try to meet steel demand for infrastructure and to support economic development more broadly. Indeed, the country has one of the fastest growth rates in Asia (capacity has nearly doubled in the last four years).

The steel demand developments have been affected in Japan, that reflects a sluggish investment in industrial, electrical and other machinery. Following a decline of 8% in 2015, apparent steel demand has remained stable in 2016, with steel orders up in the construction sectors (particularly civil engineering) and industrial machinery and equipment’s. The output from the industries has also started to recovering in early 2017, and steel demand is expected to recover in line with improved economic prospects. In Ukraine, the mining and steel industry has undergone considerable disruptions as a result of the conflict. The economy of different country having started to recover from the deep recession, and production from industries having shown signs of recovery in late 2016 and early 2017, steel market conditions should improve somewhat going forward.



Concrete does not burn – it cannot be ‘set on fire’ unlike most other materials in a building and it does not emit any toxic fumes when affected by fire. It will also not produce smoke or drip molten particles, unlike many plastics and metals. Designing with a non-combustible material results in a structure needing simpler fire detailing and therefore having quicker construction programmers. The outcome of inadequate fire details, poor workmanship and modifications during occupation causing a fire risk are reduced when homes have a non-combustible structure.

Much of design for fire safety is concerned with ensuring that people can escape from the building or structure, fire fighters are protected and the fire cannot spread to other properties or areas. Current building regulations for England and Wales are written with these three aims and there is no requirement for protection of property or to minimize damage beyond this. Clients and project teams may choose to go beyond minimum requirements and choose to provide a higher level of protection against the hazards of fire either to further reduce the risks addressed by the building regulations or to protect property.

In the majority of applications, concrete can be described as virtually ‘fireproof’. The materials when chemically combined within concrete, form a material that is important for fire safety design, and has relatively low thermal conductivity. This low conductivity means that the effect of fire is limited to the surface zones of the concrete with the middle of the element often unaffected. This also gives concrete excellent fire separation performance.

According to Government statistics [2] 60% of total household growth in England up to 2033 will come from households of age 65 or over. Designing beyond regulation, to protect an ageing population including vulnerable occupants, as well as occupants who are very young or with mobility limiting conditions, and therefore may need more time to escape a fire, are more reasons to choose a non-combustible material for structures. The materials used in the buildings can be classified according to the reaction to fire and resistance to fire This will determine whether a material can be used and when additional fire protection needs to be applied to it. EN 13501-1 classifies materials into seven grades (A1, A2, B, C, D, E and F).

The highest possible designation is A1 (non-combustible materials). The UK also has a National classification system, which has ‘non-combustible’, ‘limited combustibility’, Class 0, 1, 2, 3 and 4 (with the lower number indicating lower combustibility, smoke emission or flame droplets).Modern concrete and masonry are classed as A1 in the European system and ‘non-combustible’ in the National system, and do not need any further testing nor additional fire treatments. Designers have a responsibility to consider fire as a real possibility that can affect people’s lives and livelihoods. Choosing non-combustible materials, such as concrete and masonry, for the main structure designing course in kerala of a building, provides an excellent starting point for achieving a safer built environment for us all.

A new method called Hybrid construction integrates all concrete to make best advantage of their different inherent qualities. The accuracy, speed and high-quality finish of precast components can be combined with the economy and flexibility of cast in-situ concrete.

Hybrid concrete construction produces simple, buildable and competitive structures. The contractor is benefited from increased component manufacture, safe and faster construction and consistent performance.

Structural behaviour of Steel

Steel structures comprise a large portion of the existing infrastructure worldwide. A number of factors can potentially cause major problems in steel structures in general and steel bridges in particular. These include corrosion, fatigue, design errors, sub-standard materials, vehicle-caused accidental damage, and lack of proper maintenance. In other cases, steel bridges may not be deteriorated or damaged but are rather in need of upgrading to carry larger loads and increasing traffic volumes. In most cases, the cost of adding a component is far less than the cost of replacement and it takes less construction time and therefore reduces service interruption time.

Conventional repair methods of steel structures courses in kerala generally involve bolting or welding Also, adding heavy steel plates increases the dead load of the structure, which limits the target increase of live load carrying capacity. The continuous process of corrosion and the reduced fatigue life associated with the welded steel plates may reduce the durability, and limit the effectiveness, of conventional repair methods Despite the higher cost of FRP materials, compared to steel, the material cost alone generally comprises a very small portion of the overall project cost.. They also have a minimum visual impact on aesthetic appearance and almost no effect on clearances underneath the retrofitted girders.

Retrofit of existing structures is typically needed when live loads increase beyond those the structures were originally designed for. It may also be required because of an inadequate design, damage, fatigue cracking, or deterioration such as corrosion. The following steps are recommended for upgrading steel bridges 1. Welding cover plates to the critical flange areas of the bridge floor beams. 2. When flange material is added, the existing bolting system may become insufficient. This should be corrected by adding more bolts or substituting larger bolts. 3. Bearing stiffeners may be reinforced by bolting or welding angles or by welding plates. 4. Intermediate stiffeners may also be added by bolting or welding plates. 5. If the web was not originally spliced to resist moment, it may be spliced by adding side plates. 6. Tension truss members can be reinforced by the addition of adjustable bars or cover plates. Cover plates must, however, be welded to the gusset plates. 7. Compression truss members can also be strengthened by adding cover plates, either to convert un-symmetric cross sections to a symmetric geometry, or to reduce the width-to-thickness ratio of the plates that comprise the cross section, in order to avoid local bucking and fully utilize their yield strength.

The inherent high strength and stiffness of steel makes it a more challenging material to strengthen, compared to other materials such as concrete and wood. If steel is retrofitted using a material with a lower Young’s modulus, load transfer and hence load sharing of the strengthening material will only be significant after the steel yields .Carbon fibers have outstanding mechanical properties that could be superior to those of steel. It can be concluded for these studies that the use of CFRP materials with elastic modulus equivalent to that of steel and a reasonably high tensile strength would be most suitable for increasing flexural strength of steel beams. On the other hand, CFRP with even higher modulus or larger cross sectional area would be required to increase stiffness of steel beams.

How is steel produced?

Steel is a composite of iron and carbon. So the essential raw materials we require are press mineral and coal. This iron metal along with metallurgical coke delivered from coke oven are fed as raw material into the blast furnace whereby decrease process we make pig iron. These fixings, sintered material (small measured iron metal protuberances and coal) and some fluxes (lime and dololime) are also included. Contrasting option to the blast furnace course is the DRI route. The midrex process, HYL process and so on are the techniques by which wipe iron or DRI can be created. The pig iron delivered from the blast furnace is exchanged to the steel melting shop by a torpedo spoon. After this outer desulphurization might be done relying upon the prerequisite of the client and from there on the pig press is charged into LD converter/BOF. In case of DRI, it is specifically charged into an EAF or CONARC shell and arcing is done alongside external spearing of oxygen. Pig iron contains around 93– 94% Fe, 4– 4.5% C, around 1– 1.5% Si, 1% Mn, S and P under 0.05%. In BOF; oxygen is blown through a water-chilled copper spear to bring off carbon in the scope of 0.02– 0.07% and to evacuate contaminations exhibit in the pig press by shaping SiO2, P2O5, MnO, and FeO. The arrangement of this oxides alongside CO gas advancement happens in various consecutive advances and is subject to temperature and fractional weight kept up in the bath.

Once the essential refining has been done in BOF, the metal is taken to ARS(Argon Rinsing Station), where Al and other Ferro-combinations are added by the steel grade that will be made. An incomplete expansion is being done alongside argon cleansing to execute the shower and to use the high tapping temperature of BOF. In some cases, Al is supplanted by Fe-Si, contingent on whether the grade is aluminum or silicon killed.

Next in the line is the treatment of the warmth in LRF, where secondary refining is carried out by cutting down the sulfur content in the bath. Alloy increments are likewise done to accomplish the last point composition of the grade and the heat is then exchanged to CCM or Continuous throwing machine. If there should arise an occurrence of IF steel(Interstitial free steel); after LRF treatment, the warmth is taken to RH degasser for degassing and decarburization (carbon in these steels are in the scope of 0.002– 0.005%) and afterward at last to the caster.

Which type of steel is used for construction?

In most of the fortified concrete structures or in steel structures two types of steel are utilized. One is mellow steel and another is HYSD (High Yield Strength Deformed Bars ) or otherwise called TOR bars. Gentle steel (Fe 250 )has less quality yet because of the pliability property it is generally utilized as a part of Earthquake opposing structures. HYSD bars of level Fe 415 and Fe 500 are fundamentally utilized as a part of development work. If Pre focused on concrete structures like bridges high-quality steel is utilized.

There are numerous sorts of steel utilized as a part of the development of a building.

Here are the three most basic steel  writes utilized as a part of the development of structures.

1. Mild steel or carbon steel: Carbon steel is considered as exceptionally safe because of its quality and sturdiness. It isn’t inclined to breaking and can persist catastrophes like seismic tremors.

2. Rebar steel: Rebar Structural Steel Detailing Course in TEKLA is used to give solid help to stonework structure. It can give protection and solidness which spreads over a wide zone.

3. Structural Steel: This kind of steel comes in particular shapes like I-Beam, Z shape, L shape, T shape, Rail profile, bar, pole, plate, and so forth. It is solid, bendable and exceedingly solid and can be transformed into any coveted shape.

Is structural steel detailing revolutionizing the construction industry?


Yes….!! We can state that steel enumerating is changing the development field.

Few important factors to be considered while developing any building, particularly high rises.

1. Low cost

2. Less construction time

3. Variety of Design

4. And the list can go on.

Particularly the construction of high rises has brought an immense jump into success with the assistance of detailing. Engineers and Architects began to make and explore new design and conceivable outcomes in light of steel detailing courses in kerala. The construction with steel has turned out to be moderate in many developed countries.

Detailing industry isn’t a small occupation and it requires both field and shop involvement or possibly a little knowledge on them two. This is the motivation behind why detailers are prepared well before utilized into constant employments. Detailers take after various models in an detailing work based on the location of the activity. For USA it is AISC(American organization of steel construction).

A great deal of marvels began a long back in steel development.

Is steel structural buildings are more viable than concrete basic structures?

They are both great, yet it depends more on the project at hand, construction laws and the customers necessities what you should use.

Steel structures are lighter, yet they are more costly, also steel conections must be designed and built with more care than their fortified concrete counter parts, be that as it may, it’s simpler to do the math.

Concrete structures are heavier and less expensive, but it depend if it’s thrown nearby or precast.

However, enormous structures have these days mixes like steel bars and sections with concrete slabs or concrete segments with steel shafts and steel decks.

Steel Structure and bridges

Construction of a bridge requires choice of appropriate quality of steel. This relies upon various factors like material properties, design requirements, accessibility of steel, cost of steel, and item details. Basic Steel is broadly utilized for construction purpose. It is used for making construction materials of different shapes and sizes. The structural steel shows different properties like shape, size,, synthetic arrangement, quality etc. They are managed by industry standards.
This 26,500 or more mega ton of high-malleable steel made bridge is remaining over waterway Hooghly since 1943. Actually its a “Steel Truss Cantilever” connect built totally by riveting, without nuts or screws! It stands sixth among world’s longest cantilever spans. An every day activity of around 100,000 vehicles and potentially in excess of 150,000 people on foot, effectively makes it the busiest cantilever connect on the planet.


Sydney Harbour Bridge (Sydney, Australia): World’s largest steelarch bridge built in 1932
Golden Gate Bridge (San Fransisco, USA)
Weichsel Bridge ( East Prussia)
Ikitsuki Bridge (Nagasaki, Japan)
Akashi Kaikyo Bridge (Kobe, Japan)

What type of steel are bridges made of?
Basically every expansive steel structure in the USA will be made of A36 basic steel, which is a specific steel composite that is indicated by ASTM International.
If a isn’t utilizing A36 steel, it will be a higher-quality composite that has been determined in light of the fact that something should be high-quality, similar to a basic association that has some wacky space limitations. The real evaluations of high-quality steel that are utilized are A992 and A514, albeit some of the time you’ll see others relying upon what’s required.
however, it’s not an extraordinary plan to blend and match different kinds of steel, since it makes constructing the bridge more troublesome. If two sections made of various composites are also measured, at that point there’s a potential for them to get stirred up too, which could cause disastrous disappointment.

Integrating primary living spaces with outdoor garden


A single-family dwelling was to be designed with living areas,five bedrooms and recreational activites, converting the place into a private and personal resort. The site is a part of very old developed society surrounded by dense green foliage,housing buildings like small private residences, apartments and a high rise residential building that exists in the vicinity. The site is contoured, having a drop of about 2.5 meters across its length abutting internal roads on north-west and south-west sides.

Smartly Designed

This five bedroom house was designed by playing well with the contoured land. The lower ground floor catered to parking,services and recreational activities while the upper ground floor linked with a lush garden and swimming pool covered with shrubbery surrounding the site.

Solid floating forms designed on the first floor accommodates bedrooms allowing natural light and ventilation to draw in through the sloping roof patterns..

Design Approach

The structural steel design in kerala approach revolves around the notion of integrating primary living spaces with a private outdoor garden,which is designed to generate micro-climate within the indoor and outdoor living areas, absorbing natural light,ventilation and pleasant views. The design is determined to have a secured,private and an environment safe envelop,which is protective and percolative to the dynamics of nature.

The planning also tries to break the boundaries and allows spaces to link with each other as common living areas like family room, dining room,kitchen,primary circulation passage,stairs,sit outs,garden court, swimming pool, gymnasium,etc. to formulate a single living space without visual barriers. The main living area level and service area on lower ground level with parking,utilities,storage and servant rooms are segregated by using the contoured land creating levels and required functional spaces.

The plan of the building preserves an existing coconut palm and accommodates it within the house generating a ventilation court around it. The design sensitively includes critical climatic aspects of cent per cent rainwater harvesting,solar and wind power harvesting,inclusion of natural light as primary element,stack ventilation shaft allowing the building body to breathe naturally.

Climatic Influence

The existing shrubbery within and around the plot drives the design idea to open the house towards the east side of the plot,creating a private garden court. The planning attempts to achieve natural light and cross ventilation throughout the house. Centrally located,ventilation and service shaft creates stack process in order to let out hot air and thus air-circulation through passive system. The overall envelope has insulated walls on the south-west side of house and well insulated roof tops are consciously designed to minimize heat gain.

The formation of the building is divided into two parts,one acts as base covering the ground and the lower ground structure,which lifts the second part containing the first floor. The ground and lower ground structure is principally generated through stone cladded parallel walls,whereas the first-floor houses bedrooms,creating private spaces through enclosed and floating forms. Parallel placed slate stone cladded walls spring from lower ground to upper ground and opens to the pictures que view inviting natural light and ventilation.

Strucural Approach

The house is bounded in RCC structure, filled-in with brick walls,with well insulated external surfaces. The external finishes are weatherproof and light reflective to protect interior spaces. The structural frame takes care of integrated ventilation and harvesting of green energy through solar photovoltaic panels and domestic wind turbine.

The gym and the pool deck fitted with SS columns and steel pergola box sections to support the roof. The spa area is also supported using SS columns and RCC structure. Steel framing is also utilized for the façade glazing which helps drastically in supporting large spanned glazing. Another beneficial quality of using steel detailing in kochi is that the load is distributed evenly from the beam to the structural frame without any hassle. The house is bounded in RCC structure , filled in with brick walls,with well insulated ecternal surfaces. The external finishes are weatherproof and light reflective to protect interior spaces. The structural frame takes care of integrated ventilation and harvesting of green energy through solar photovoltaic panels and domestic wind turbine.