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Rebar (HA steel) is manufactured in Morocco mainly by Sonasid (ArcelorMittal group), the national leader listed on the Casablanca Stock Exchange.
For a standard 15 cm slab: 8 to 12 kg/m2. For a 20 cm slab (heavy loads): 12 to 18 kg/m2.
Fe E400 has a yield strength of 400 MPa (standard use). Fe E500 (500 MPa) is used for large structures or seismic zones.
Formula: weight (kg/m) = diameter2 / 162. Example T12: 12x12/162 = 0.888 kg/m. A standard 12m bar = ~10.7 kg.
Rebar prices follow international steel markets. Historically, January-March is often the cheapest period. Avoid high-demand periods (April-June, construction season start).
Yes, rebar must be stored on supports (never directly on the ground) and protected from rain. Surface rust doesn't affect strength but deep rust (scaling) must be avoided.