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Do you need to use wire mesh or rebar if im having fibermesh mixed with my concrete?
You still need rebar, unless you are filling a drop in an existing slab that already has steel in it.
Does concrete expand when heated?
Yes , just the same as steel - otherwise the rebar would crack structures !
Is rebar a requirement in a 8 by 8 slab?
No. There are plenty of complete driveways with no steel. Assuming you are refering to flatwork and not an actual building foundation.
Is re-bar and reinforcement bar is same?
Yes.A rebar, or reinforcing bar, is a common steel bar, and is commonly used in reinforced concrete and reinforced masonry structures. It is usually formed from carbon steel, and is given ridges for better mechanical anchoring into the concrete. It can also be described as reinforcement or reinforcing steel. In Australia, it is colloquially known as reo.To know more about rebar visithttp://en.wikipedia.org/wiki/Rebarhttp://www.rgsrebar.com
What is the unit weight for rebar 14mm?
0.395 kgs = unit wt of 8 mm dia rebar There is another way of calculating the specific weight (or unit weight) of a rebar. Especially for those who are interested of rebars less than 10mm of dia. the way is to calculate it mathematically knowing that the density of steel rebars is 7851 Kg/m3. 8mm rebar ==>Unit weight [Kg/m] = Cross-Sectional Area [m2] x Density [kg/m3]= (Pi)x(radios)2 x 7851 kg/m3 = 0.395 Kg/m Good luck !!
