Design, construction and maintenance of residential slabs is regulated by Australian Standard AS – Residential slabs and footings. Australian Standard AS – Time for a change. With specific reference to the slab heave problem with waffle rafts. Frank Van der Woude, B.E., Ph.D. AGS Vic. complying with the Australian Standard – AS referenced by the BCA. AS covers the design and construction of residential slabs and footings.
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This latest release has seen a number of changes introduced which will in turn affect the current design calculations for residential slabs-on-ground.
Here are some of the key changes to this code austrslian how they lead to a PolyVoid designed suspended slab-on-ground being highly competitive, and a solution for problem foundations and reactive soils. The table above highlights one of the most significant changes to the code, being the splitting of the “H” classification into two new classes, H1 and H2.
One of the elements used to administer this change is the “Ys” range Ys being the measure of potential movement in mm of the soil. A soil’s Ys rating is its indication of movement potential. It is measured in millimetres and suggests the value of which the soil might move due to changes in moisture.
Some of the reinforcing requirements for design have changed and have the potential to have a significant affect on the cost of australia waffle slab. For example, the introduction of the H2 classification sees the requirement for N16 reinforcing bars to be used in all edge beams and internal beams of the slab typical on a waffle slab.
PolyVoid – The Australian Standard has Changed
There has also been a revision of the mesh requirements for ‘slab length’. The previous code revision called for reinforcing mesh to be upgraded to the next specification when a concrete slab was greater than 25 metres in length.
This change applies to all slab designs across all site classification types. These calculation changes will ultimately see auwtralian slabs being more heavily piered than previously. These changes will also see the cost of a “conventional” waffle go up as more piers will be specified standdard order to satisfy the new requirements of the code.
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To understand more about how the changes to AS may affect your slab designs and consequently, slab costs, contact your engineer. For more information sfandard ASclick here: Why PolyVoid Soil Characteristics.
AS Code Changes. Photo Gallery – Installation.
Key Contacts Make an Enquiry. The Australian Standard has Changed. Steel Reinforcing Calculations Some of the reinforcing requirements for design have standsrd and have the potential to have a significant affect on the cost of a waffle slab.
Australian Standard As Pdf Download – livinfast
More Code Information To understand more about how the changes to AS may affect your slab designs and consequently, slab costs, contact your engineer. Powered by Site Ninja. Menu Home PolyVoid Management.