Hi Tech Steel Solutions    FAQs

 

Q How many different sections does Hi Tech use?
A 2 sections 90mm C section for walls, ceilings and roof frames and 140mm C section for high walls and floors.
Q What steel is used in the system?
A For 90mm walls we use 0.55mm (BMT), which is high tensile G550.
For 140mm studs 0.75mm (BMT), which is high tensile and G550.
For 140mm floor frames 1.15mm G350.
The steel is either galvanized or Zincalume which has a warranty in our application of 75 years.
Q What is the weight of a completed house per square metre in steel framing?
A It varies from as low as 10kg per m2 to 20kg per m2 for a two storey house with sub floor frames.
Q Does thinner steel conduct less heat than thicker steel?
A Yes, steel conducts heat/cold in direct proportion to its thickness.
Q Are steel frames noisier than timber framed walls?
A No, in tests done by Winstone Wallboards it was determined that our steel framed walls were 1 STC better than the timber framed walls.
Q Do steel framed floors creak?
A No, due to glue and screw methods there is no creaking at all.
Q Are frames fire resistant?
A Yes, BRANZ subjected the system to exhaustive testing and found that it easily passed the minimum standards laid down and additionally the nogging system we use stopped frames twisting to the same degree as other click-in stud systems did.
Q Is steel framing strong?
A Yes, the fixings on steel framing are screws or rivets and are much stronger than an end nailed stud on a timber frame. A component is only as strong as its weakest member!
Q Is steel framing good in Earthquakes?
A Steel framing has a Memory meaning that in an earthquake it will flex but retake its original shape. Also as it has low weight in an earthquake it does not develop momentum like other heavier products.
Q What type of cladding can be used on steel framed walls and roofs?
A They can be clad in exactly the same way as timber framed systems can be clad by using specially adapted screws for the particular purpose.
Q Can the systems be used in commercial applications as well as domestic?
A Yes, the systems can be used in the following applications:
  • Wall frames for houses
  • Floor frames for houses
  • Ceiling frames for houses
  • Roof frames for houses
  • Internal framing for kit outs of offices and commercial buildings. To be noted that Hi Tech produces a load bearing wall system so it can be used in both load bearing and non load bearing systems so in a remodelling situation where walls are changed around our system can be used to support roof sections whereas many other office kit out systems are non load bearing.
    Our frame comes with a nogging system so if the wall is gib lined horizontally as is often the case today we have a nog to support edges of gib rather than just having to rely on taped joins.
  • Wall frames for commercial/industrial buildings. For higher walls Hi Tech uses its unique 140mm frame and this has the advantages of being able to be lined with studs at 600mm centres, which is always difficult on portal/girt structures.
  • Floor frames for commercial and industrial. Hi Tech has developed a unique floor frame system, which it has exclusive rights to and this has applications for 3kpa loadings and can be fire rated to varying degrees by fixing gib direct to underside of frame on a single plane. This has major advantages over other floor systems.
Q How are the frames made?
A The process is simple and as follows:
The customer sends their plan to Hi Tech which then CADs the plan into a language readable by the computer that runs the rollforming machine. The steel frames are then run by the rollformer and each frame is packaged and labelled and stacked on pallets for shipping. On arrival at the job the frames are assembled according to a diagram using either rivets or tec screws.
The job of assembling frames can be carried out by mainly unskilled labour as it is similar to assembling Lego with juncture points all punched and dimpled so they click together. Once the assembly team has assembled a few frames they understand the concept very quickly.
Q How long does it take to assemble frames?
A Using a semi trained team of 3 people 250m can easily be fabricated in an hour. A 260m2 house can be fabricated in 12 hours on this rate.
Q Does it take long to stand the frames?
A Standing frames is very simple, just chalk line the walls and stand the frames, and fix down with concrete nails to concrete floors or screws to particle board floors or dyna bolts or similar and there is virtually no straightening because steel as opposed to timber is a stable product. This is a huge cost and time saving as straightening timber frames is a major job.
Q What tools do you need to build in Hi Tech frames?
A A Tec Gun which is a screw drill or a simple battery powered drill with screw bits as attachments. Every house has one. If using rivets then a rivet gun and compressor.
As the computer produced frames are so accurate with tolerances of only a few mm there is no real adjustment needed to frames on site but if a frame needs to be changed then one only needs to use tin snips to cut the frame or at most an angle grinder.
Q Is Hi Tech able to produce frames and keep up with demand?
A Hi Tech can roll up to 300m per hour which translates to approximately 30 lineal metres of house framing. So depending on the demand Hi Tech can supply an order relatively quickly.
Q Why do not more builders use steel framing?
A Builders like most trades are traditional and so they stick to what they know and have learned but more and more are finding the advantages of steel irresistible.

 

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