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45 Cards in this Set
- Front
- Back
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Codes for OPC and Low heat cemwnt |
IS 269 |
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Pozzolana cement code |
IS 1489 |
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Side of cube used for mortar testing |
7cm * 7cm |
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IS code for aggregate s |
IS 383 |
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Mild steel bar code |
IS 432 |
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Retarders |
Gypsum ,sugar |
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Accelerators |
Ca cl2 |
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Plasticizers |
Air entraping agents improves workability |
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Permissible individual variation of cube strength |
15% |
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Minimum b-grade of concrete used for post tensioning and pretension concrete |
Post tensioned pre stressed - M30 Pre tensioned prestressed - M40 |
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Grades of ordinary , Standard and high strength concrete |
Ordinary - M10 to M20 Standard - M25 to M55 High strength - M60 to M80 |
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Long term modulus of elasticity |
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Maximum cement content |
450 kg/m3 |
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Minimum cement content for M20 and M25 for RCC |
300kg/m3 |
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Spacing of expansion joint |
45m |
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Shrinkage strain |
.0003 |
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Minimum grade of concrete on sea coat |
M30 |
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FOS of concrete and steel in working stress method |
Concrete -3 Steel -1.78 |
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Modular ratio eqn as per IS 456 for working stress method |
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Minimum strain on reinforcement bar at the time of failure |
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Xu /d limit and Mu limit for different grade of steel |
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Minimum tension reinforcement for beams |
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P lim equn |
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The method used for mass production of sleepers |
Pre load method |
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Concordant profile |
Tendon profile in prestress concrete in which the eccentricity is proportional to BM caused by any loading on the structure. |
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Maximum strain in compression steel of doubly reinforced section |
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Effective width for L an T beam |
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Isolated T and L beam effective width |
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If flange thickness is more than 0.2 d effective thickness |
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Minimum shear reinforcement |
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Maximum spacing of shear reinforcement |
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Lap length values |
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Skew bending theory .equivalent shear and BM |
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Minimum eccentricity for column |
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Maximum strain for axial compression alone |
0.002 |
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Axial load of column if e < 0.05d |
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Effective length of columns in buildimg frames is based on |
Woods table |
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Permissible shear stress in footings |
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Permissible bearing stress of footing |
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Prestressing losses |
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Poissons raio of steel and concrete |
Steel - 0.27 to 0.3 Concrete - 0.1 to 0.2 |
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Torsional stiffness |
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Unit wt of bars |
d^2 / 162 |
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Fundamental period of Moment resisting frame |
0.09h/d |
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Form work removal durations |
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