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Concrete is unpredictable compared to steel...
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∙ 13y ago
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How many kg of steel reinforcement in one cubic meter concrete for retaining wall?
80 kg
How do you calculate kg of steel reinforcement in one cubic meter concrete?
it would depend entirely on the rebar design.....
How do you calculate the neutral axis of reinforced concrete slab?
Concrete slabs should be designed to fail under rebar yield as opposed to concrete crushing. So assuming a rebar yielding scenario the first step is to determine the maximum load which can be sustained by the tension rebar as follows, 0.87*Fy gives the failure maximum stress in the steel, which can then be multiplied by the total area of rebar to give the force of the steel in tension. where Fy is the yield strength of the steel. (typical value of Fy is say 500Mpa) Next it is assumed that the slab is in a state of static equilibrium i.e. not accelerating off in any direction! For this to happen the force in the concrete must = the force in the steel, Fst = Fcc = 0.567*Fck*A Fst = force of the steel in tension (calculated above) Fcc = force of concrete in compression = maximum sustainable Force of steel in tension Where Fck = concrete compressive strength, and A = area of a simplified stress block, limiting the depth of the stress block to 0.8x results in ; Fcc = 0.567*Fck*0.8x*B where x = depth to neutral axis B = breadth of slab Rearranging for x gives X = (Fcc/(0.567*Fck*B))/0.8
How do you estimate the placing of rebars?
The placement of steel reinforcing is dependent on the requirements of the strength and load-bearing of the concrete. A structural engineer should be contacted in this regard.
How much does a yard of concrete weigh?
Fresh concrete can weight about 3700 lbs for every cubic yard. The density will also determine how much is its weight. assuming its weight to be around 150 lbs for per cubic feet. This would make it around 4000 lbs which could come to 2 tons. Calculating the weight of reinforced concrete could be a bit more difficult since this type come with steel bars. On an average, we could assume 500 lbs for steel density per cubic feet which is almost 3 times more than cement. So with this calculation, we can assume the weight of reinforced concrete to be around 4000 lbs.
Why the partial safety factor for concrete is higher than that for steel?
because concrete is unpredictable than steel
Why the partial safety factor of concrete is higher than that for steel?
because concrete is unpredictable than steel
What is the factor of safety value for working stress method?
for concrete a F.O.S. upto 3 is used . and for steel 1.75 to 1.85 .. is used.
What is the factor of safety of mild steel?
it's 1.75 - 2.00
What safety features aims to keep nuclear radiation contained?
Steel-reinforced concrete
Which of these safety features aims to keep nuclear radiarion contained?
Steel-reinforced concrete
Define steel reinforced concrete?
Steel reinforced concrete is concrete with rods of steel running through it.
How much steel is required for one cubic meter of concrete?
None. Concrete may be formed without metal.If you are reinforcing the concrete with rebar then it depends on what loads the reinforced concrete will have to bear, the dimension of the rebar, the safety factor involved, and lots of other geometric factors.Steel bars quantity will be according to structure element; but a (very) rough average of 120 KG per cubic meter.
Why concrete bridges have steel rods inside them?
The steel rods are there to strengthen the concrete - making it reinforced concrete.
How do you calculate the vol of steel to a given vol of concrete?
how calculate steel in concrete
What was the Tacoma Bridge made out of?
The basic matetrials were steel and concrete.
What is more fire resistant steel or concrete?
Concrete is much more fire resistant. This is shown by the design of reinforced concrete structure where the steel is placed within the concrete. A major reason is that the concrete protects the steel from any fire. Steel only construction requires the steel to be covered in a fire protection material.
