## Legend | |

To be filled by user | |

Output |

Design Discharge | |||

Velocity in the Desilting Tank | |||

Assumed Average Depth | |||

Width Required | |||

Width Adopted | |||

Size of water conductor from Inlet to Desilting Tank | |||

Length required for Hopper | |||

Total required length | |||

Width | |||

Depth | |||

(B) |
| ||

(a) | Tank Full and Soil Dry | ||

Since the Bending moment due to saturated soil near the water face will be more than that due to dry soil | |||

(b) | TANK IS FULL AND SOIL SATURATED | ||

NET B.M. | |||

| |||

(a) | RESULTANT OF WATER PRESSURE & Wt OF WATER | ||

(b) | VERTICAL COMPONENET OF SELF Wt OF INCLINED WALL | ||

NET BM | |||

(c) | TANK IS FULL AND SOIL IS DRY | ||

Since the B.M due to saturated soil near the water face will more than due to dry soil | |||

(d) | Tank is full and no earth pressure Prominant case in the Present Situation critical condition at B' is considered | ||

NET B.M. | |||

(e) | TANK IS EMPTY AND SOIL SATURATED | ||

NET B.M. | |||

(f) | TANK IS EMPTY AND SOIL DRY | ||

The BM due to dry soil will be less than for Saturated soil so case is not considered | |||

D) | CALCULATION FOR REINFORCEMENT | ||

MAX. B.M. | |||

DEPTH REQUIRED | |||

DEPTH PROVIDED | |||

OVERALL DEPTH | |||

STEEL REQUIRED | |||

STEEL REQUIRED | |||

DIA OF BAR | |||

SPACING REQUIRED | |||

SPACING OF BAR PROVIDED BOTH FACES | |||

STEEL PROVIDED | |||

STEEL PROVIDED >= MINIMUM STEEL REQUIRED | |||

Curatilment of Reinforcement where 50% Reinforcement required | |||

Asth/AstH | |||

either 12F or 400mm whicher is greater | |||

ACTUAL LENGTH OF CURTAILMENT | |||

LENGTH OF BAR FROM BASE | |||

| |||

DIA OF BAR | |||

STEEL REQUIRED | |||

SPACING REQUIRED | |||

SPACING PROVIDED | |||

STEEL PROVIDED | |||

STEEL PROVIDED >= MINIMUM STEEL REQUIRED | |||

E) | CHECK FOR STABILITY | ||

WEIGHT OF DESILTING TANK | |||

In concrete structure Buoyancy Through Pore Pressure is limited to 15% of Full Buoyancy on submerged portion | |||

15% OF BUOYANCY | |||

Wt DUE TO BUOYANCY < Wt OF DESILTING TANK | |||

DESIGN OF ONE WAY SLAB:- | |||

INPUT DATA | |||

NO. OF PANELS | |||

LENGTH | |||

EFFECTIVE SPAN LEAST OF TWO | |||

CENTRE TO CENTRE SPACING | |||

EFFECTIVE SPAN=CLEAR SPAN+ EFFECTIVE DEPTH | |||

WIDTH OF PANEL | |||

SOLUTION:- | |||

LOAD CALCULATIONS: | |||

FROM DEFLECTION CRITERIA | |||

ASSUME OVERALL THICKNESS OF SLAB = | |||

DEAD LOAD OF SLAB | |||

IMPOSED LOAD | |||

FACTORED TOTAL LOAD ON SPAN PER METER WIDTH | |||

ULTIMATE MOMENT | |||

SHEAR | |||

CALCULATION FOR DEPTH OF SLAB:- | |||

EFFECTIVE DEPTH | |||

ASSUME OVER ALL DEPTH OF SLAB | |||

EFFECTIVE DEPTH | |||

If d>dreq than section is under reinforced | |||

CALCULATION FOR SHEAR: | |||

SHEAR STRESS tv | |||

Percentage of Steel | |||

FOR 120 MM DEPTH | |||

check for shear | |||

CALCUATIONS FOR REIFORCEMENT: | |||

Area of Steel Ast | |||

DIA OF BARS USED | |||

AREA OF ONE BAR | |||

SPACING OF BARS REQUIRED | |||

PROVIDE SPACING OF BARS | |||

AERA OF STEEL REQUIRED | |||

| |||

STEEL PROVIDED | |||

Ast at support | |||

CHECK FOR CONTROL OF CRACK | |||

MINIMUM % AGE OF STEEL | |||

AREA OF STEEL | |||

MAXIMUM DIA OF BAR | |||

DIA OF BAR PROVIDED | |||

MAX SPACING | |||

SPACING PROVIDED | |||

RECHECK FOR SHEAR | |||

100* Astprov/bd | |||

Shear Stress | |||

SHEAR STRESS | |||

SAFE IN SHEAR | |||

CHECK FOR DEFLECTION | |||

BASIC SPAN/ DEPTH RATIO | |||

Percentage of Steel | |||

steel stress of Service load fs | |||

Modification Factor kt | |||

(l/d)max | |||

(L/d)provided | |||

SAFE IN DEFLECTION | |||

DISTRIBUTION STEEL | |||

DISTRIBUTION STEEL | |||

DIA OF BARS USED | |||

AREA OF ONE BAR | |||

SPACING OF BARS | |||

PROVIDE SPACING OF BARS | |||

STEEL PROVIDED | |||

DESIGN OF BOTTOM SLAB | |||

AS PER SITE THE BOTTOM PORTION COMPRISES | |||

THE MINIMUM REINFORCMENT | |||

DIA OF BAR | |||

SPACING OF BAR | |||

SPACING OF BAR PROVIDED | |||

STEEL PROVIDED |