If you're in a situation where you need to silence your phone, you can continue to receive new email alerts by turning on the phone's vibration feature. 1  1. Tap Settings on the iPhone's home screen. 2  2. Touch Sounds, then tap the Vibrate switch to set it to On.. 3  3. Tap Settings to return to the Settings screen.
Here is the derivation of that D2/162.2, Weight of steel bar per meter = Area of the steel x Density of steel x Bar length. = (3.14 x D2 /4) x 7850 kg/m3 x 1m (refer these posts basic formulas & unit weight of materials) = (D2 x 6162.25)/(1000 x 1000)
Adequate cover of the steel by the concrete is important. Deformed reinforcing bars come in grades 40, 60 & 75 (for 40 ksi, 60 ksi and 75 ksi yield. strengths). Sizes are given as # of 1/8â up to #8 bars. For #9 and larger, the number is a nominal. size (while the actual size is larger). Reinforced concrete is a composite material, and the average density is considered to be 150 lb/ft3. It has the properties that it will creep (deformation with long term load) and shrink (a result of. hydration) that must be considered.