The angle/slope calculator has been updated.
Surcharge rate %, include
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The amount of rebar is determined by the pouring area, reinforcement spacing (@], and reinforcement type.
It is calculated by summing the lengths of reinforcing bars by direction and multiplying by the unit weight of each specification.
Round up any decimal points and add 1 unit for border reinforcement. Usually, add 1 unit to include the start and end (considering border reinforcement].
When selecting Mat Foundation (Abdominal Back], apply × 2 to the result value above.
Each item entered by the user must be based on actual on-site measurement data to enable accurate calculation of material loss rates.
Determine whether it is a 'slab' laid in a single layer or a 'mat foundation' laid in two layers, top and bottom.
It is more accurate if you enter the effective length where the actual rebar will be placed, excluding the cover thickness.
Please enter the @200 and @250 values from the design drawing. The narrower the spacing, the greater the amount of rebar.
The standard length is usually 8m. Depending on site conditions, you can select 9m, 10m, etc.
Considering the joint and anchorage lengths and scraps, the default value is typically set to 3~5%.
This is weight data by specification for the SD400/SD500 steel grades, which are the most commonly used when ordering rebar. Please refer to this when selecting rebar diameters.
Here are practical tips to prevent the 'accident' of construction being halted due to a shortage of materials on site.
If the overlapping joints and bend anchorage lengths are increased, 10 to 15% more weight may be required than the calculated weight.
For the lower reinforcement, use spacers to ensure a minimum coverage of 40 to 80 mm to prevent corrosion.
Orders must be placed in 'ton' or 'unit (EA]' units to avoid mistakes.
If you check the horizontal and vertical alignment of the rebar using a laser level before pouring, you can prevent the rebar from shifting during concrete pouring.