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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 much weight can a 2 x 2 angle support?
Steel? Aluminium?As a column (vertical leg) or a horizontal beam?In both cases the length and the method of fixing/supporting the ends will determine the maximum allowable load.
What is the meaning of steel rule?
A ruler made of stainless steel.
What is difference between HYSD bars and TMT bars compare chemical composition also?
Thermo Mechanically Treated (TMT) bars have revolutionised the industry with its superior quality as against the cold twisting process to manufacture the traditional reinforcement bars. The special heat treatment process ensures greater strength, excellent ductility, enhanced bendability and much superior weldability. CHEMICAL PROPERTIES : Grade C%Max* S%Max P%Max Mn%Min Si%Max Fe-415 0.30 .055 .055 .55 .35 The most commonly used steel bar for concrete reinforcement is TOR steel. The other names of TOR steel are CTD bar, deformed steel bar, twisted steel bar, HSD bar, CWD bar etc. These TOR steel bars can be used for general concrete reinforcement in buildings, roads, bridges etc. These steel bars process a combination of strength and ductility that is far in excess of minimum limits specified in standard IS:1786. ::TOR steel bars are certified to IS:1786 in dimensional tolerances. However in the size range of 8/12 mm where tolerance are of great concern, much closer tolerance that the specification is maintained. HYSD High Yield Strength Deformed (steel) .It is reinfrocement steel.
How many grams of steel would fit into a space measuring 4 cm cubed?
It depends on the density of steel. There are many types of steel depending on what substances are alloyed together. The density of stainless steel can range from 7.5 to 8 grams per cm3. But there are other types of steel that are denser or lighter.
