Technical Info

SANS 517 Building Code

LSF Supplies buildings, designs and materials comply with the SANS 517 building code, which is specifically compiled for low rise light steel frame buildings. This National Standard outlines the rules and requirements for the design, fabrication and construction of buildings using light steel frames, and specifies industry standards for foundations as well as the cladding and insulation using the appropriate materials for walls, floors and roofs.

SANS 517 complies with SANS 10400-XA, as well as the more stringent SANS 204 for energy efficiency, which specify for example that the average wall system should carry a 60 min fire rating, have an R-value of up to 3.75 thermal rating and a 65 dB (decibel) sound rating.

LSF Supplies Design Process

Every quote and project start with a precise and thorough design. The process begins with architect plans or CAD drawings which LSF Supplies then redraw using state-of-the-art Scottsdale engineering software to create a light steel frame layout. The building design is engineered according to the SANS 517 building code and re-checked under close scrutiny for possible flaws or design improvements to be made to the building’s weight bearing capacity. The design is then signed off by an engineer who issues an engineering certificate before production of the lightweight steel frame commences. The design file for the frame’s walls, floors and trusses are rolled from cold-pressed galvanised steel coils and cut to size with millimetre precision.

The LSF Building Process

LSF Supplies Roll Forming Process

LSF Supplies has light steel roll formers that can produce super-structures of any size – from granny flats and kit homes to industrial warehouses and superstores. We can also produce roofing solutions with open span trusses of up to 35 meters. We have the capacity to create a satellite factory to produce trusses and super-structures on site, depending on the scope of a project and client’s specific requirements. This enables us to execute projects in remote areas such as neighbouring countries and Central and Western Africa.

Benefits of LSF (light steel frame) CONSTRUCTION

Some of the many benefits of building with light steel framing are:

Steel is green

  • Steel is 100% recyclable.
  • Cold-formed steel has the highest strength-to-weight-ratio of any structural building material.
  • Light steel framed structures stay straight and true.
  • Lightweight steel frames do not expand and contract with humidity and temperature changes.
  • Doors and windows within light steel frames fit perfectly.

(As published by: Steel Framing Alliance; Scottsdale; Steel Recycling Institute)

Benefits to Consumers

  • The high strength of steel creates safer structures with less maintenance and slower aging.
  • LSF (light steel frames) are not vulnerable to termites or any type of fungi or organism.
  • Galvanised light steel frames do not need any additional preservative chemicals as for example timber does.
  • LSF construction minimises the probability of foundation problems.
  • LSF buildings have less movement than wood and a lower risk of damage in earthquakes or hight winds.
  • LSF is non-combustible – it does not burn and will not contribute fuel to spread a fire.

Benefits for Builders

  • Light steel frames (LSF) are light and almost never require lifting equipment on site.
  • Service holes are cut into the steel frame upon production.
  • Straight walls and square corners make for a precision build.
  • Windows and doors can be perfectly installed to open and close as they should.
  • Building with lightweight steel results in less scrap and waste on site.
  • There is no drying out period in wet weather thus no delays or penalties due to bad weather.
  • Lightweight steel 100% recyclable and enhances environmental selling and green positioning.
  • Steel is inorganic and will not rot, warp, split, crack, creep or become infested.
  • LSF is dimensionally stable and will not expand or contract due to moisture.
  • LSF offers consistent material quality as steel coils are produced in strict accordance with national standards. (From: Scottsdale)