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SSC JE-2016 CONVENTIONAL PAPER-2 DETAILED SOLUTION

Q-1:-USING LACEY'S THEORY,DESIGN AND IRRIGATION CHANNEL CARRYING 30M2 /SEC.TAKE SILT FACTOR AS 1.0 ? 

Q-2:-A RETAINING WALL WITH A SOMOOTH VERTICAL BACK IS IM HIGH AND RETAINS A TWO-LAYER SAND BACKFILL WITH THE FOLLOWING PROPERTIES:--.................SO ON

 

Q-3:-A LAYER OF SAND 6M THICK LIES ABOVE A LAYER OF CLAY SOIL. THE WATER TABLE IS AT A DEPTH OF 2.0M BELOW THE GROUND SURFACE TEH VOID RATIO OF THE SAND LAYER IS 0.6 AND THE DEGREE OF SATURATION OF THE SAND LAYER ABOVE THE WATER TABLE IS 40%.THE VOID RATIO OF THE CLAY LAYER IS 0.7.DETERMINE THE TOTAL STRESS, NEUTRAL STRESS AND EFFECTIVE STRESS AT A POINT 10M BELOW THE GROUND SURFACE.ASSUME SPECIFIC GRAVITY OR OTHE SAND AND CLAY SOIL RESPECTIVELY AS 2.65 AND 2.70

Q:-4:A ROAD IS TO BE CONSTUCTED WITH A UNIFORM RISING GRADIENT OF 1 IN 100.DETERMINE THE STAFF READING FOR SETTING THE TOPS OF THE TWO PEGS ON THE GIVEN GRADIENT AT 30M INTERVAL FROM THE LAST POSITION OF THE INSTRUMENT.THE R-L OF THE FIRST PEG IS  384.500.A FLY LEVELLING WAS CARRIED OUT FROM A BM OF RL 387.000.THE FOLLOWING OBSERVATION ......SO ON.

 

 

Q:-5 DESIGN A CIRCULAR COLUMN WITH HELICAL R/F SUBJECTED TO A WORKING LOAD OF 1500 KN. DIAMETER OF THE COLUMN IS 450MM. THE COLUMN HAS UNSUPPORTED LENGTH OF 3.5M, AND IS EFFECTIVELY HELD IN POSITION AT BOTH ENDS BUT OT RESTRAINED AGAINST ROTATION. USE LIMIT STATE DESIGN METHOD, USE M-25 CONCRETE AND HYSD FE-415 STELL?

Q:-6 A SAMPLE OF NORMALLY CONSOLIDATED CLAY WAS SUBJECTED TO A CONSOLIDATED UNDRAINED TRIAXIAL COMPRESSION TEST THATWAS CARRIED OUT UNTIL THE SPECIMEN FAILED AT A DEVIATOR STRESS OF 50KN/M2 THE PORE WATER PRESSURE AT FAILURE WAS RECORDED TO BE 20KM/M2 AND CONFINING PRESSURE OF 50KN/M2 WAS USED IN TEH TEST.DETERMINE THE CONSOLIDATED UNDRAINED FRICTION ANGLE?

Q:-7 STATE AND DISCUSS DIFFERENT FACTORS INFLUENCING CMPACTION OF SOIL IN THE FIELD? [20 MARKS] 

Q:-8 DESIGN A CONSTANT THICKNESS FOOTING FOR A REINFORCED CONCRETE COLUMN OF 300MM. THE COLUMN IS CARRYING ANAXIAL WORKING LOAD OF 600KN. THE BEARING CAPACITY OF SOIL IS 200KN/M2 USE M-25 CONCRETE AND SYSD FE-415 BARS. USE LIMIT STATE DESIGN METHOD ? [15 MARKS] 

100ast/bd .15 .25 .50 .75 1.0
tc(n/mm2) .19 .36 .49 .57 .64

Q:-9 NAME THE FOUR IMPORTANT CONSTITUENTS OF CEMENT AND ALSO STATE THE ROLE OF EACH IN ACHIEVING ITS PROPERTIES ? [15 MARKS] 

Q:-10 WHAT IS GRIT ? WHY SHOULD GRIT BE REMOVED FROM WASTEWATER ? WHAT IS THE BASIC PRINCIPLE BEHIND TEH DESIGN OF GRIT CHAMBER ? WHAT IS THE REASON TO HAVE CONSTANT VELOCITY OF FLOW IN A GRIT CHAMBER (CONVENTIONAL HORIZONTAL FLOW) AND HOW IS IT ACHIEVED? [20 MARKS] 

Q:-11 DIFFERENTIATE BETWEEN THE FOLLOWING WITH REFERENCE TO BITUMINOUS CONSTRUCTION:-

1)PRIME COAT AND TACK COAT.

2)BITUMINOUS CONCRETE AND BITUMINOUS MACADAM

[15 MARKS] 

Q:-12 CLASSIFY THE SOLID WASTES,GIVING SUITABLE EXAMPLE FOR EACH OF THEN.ALSO EXPLAIN THE DIFFERENT METHOD OF DISPOSAL OF SOLID WASTES.[15 MARKS] 

 

Q:-13 ,14, 15,16 SOLUTIONS OF SSC JE MAIN 2016-17.

 

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