General Notes for civil Engineering
General Notes for civil Engineering
- Electrical conduits shall not run in column
- Earth work excavation for basement above 3 m Should be
stepped form - Any Back filling shall be compacted 95% of dry density at the
optimum moisture content and in layers not more than 200mm
for filling above structure and 300 mm for no structure - F SOLING IS SPECIFIED THE SOLING STONES SHALL BE LAID
AT45° TO 60° INCLINATION (AND NOT VERTICAL) WITH
INTERSTICES FILLED WITH SAND OR MOORUM. - Y REPRESENTS TOR STEEL GRADE - Fe-415 OF IS:1786. WITH
CHARECTERISTIC YIELD STRENGTH OF 415 N/MM MINIMUM. - ∅ REPRESENTS MILD STEEL GRADE - 1 OF IS:432 (PART-1)
- ALL REINFORCEMENT SHALL BE FREE FROM MILL SCALES,
LOOSE RUST & COATS OF PAINTS, OIL OR ANY OTHER
SUBSTANCES. - BY PROVIDING PROPER COVER BLOCKS, SPACERS, CHAIRS
ETC.. ALL REINFORCEMENT SHALL BE PLACED AND
MAINTAINED IN POSITION AS SHOWN IN STRUCTURAL
DRAWING - CEMENT SHALL BE 43 GRADE ORDINARY PORTLAND CEMENT
- CONFORMING TO IS:8112 OR53 GRADE ORDINARY PORTLAND
- CEMENT CONFORMING TO IS:12269-1987.
PLATFORM ABOUT 200mm ABOVE FLOOR LEVEL AND 300mm
AWAY FROM WALLS. BAGS TO BE STACKED NOT MORE THAN
10 BAGS HIGH IN SUCH A MANNER THAT IT IS ADEQUATELY
PROTECTED FROM MOISTURE AND CONTAMINATION.
WATER USED FOR BOTH MIXING AND CURING SHALL BE
CLEAN AND FREE FROM INJURIOUS AMOUNTS OF OILS, ACIDS,
ALKALIS, SALTS, SUGAR AND ORGANIC MATERIALS OR
OTHER SUBSTANCES THAT MAY BE DELETERIOUS TO
CONCRETE OR STEEL. THE pH SHALL BE
GENERALLYBETWEEN 6 AND 8.
CEMENT SHALL BE TESTED FOR ITS SETTING.
1. THE INITIAL SETTING TIME SHALL NOT BE LESS THAN 30
MINUTES.
2. THE FINAL SETTING TIME SHALL NOT BE MORE THAN 10
HOURS.
1. THE INITIAL SETTING TIME SHALL NOT BE LESS THAN 30
MINUTES.
2. THE FINAL SETTING TIME SHALL NOT BE MORE THAN 10
HOURS.
SAMPLES FROM FRESH CONCRETE SHALL BE TAKEN AND AT
LEAST A SET OF 6 CUBES OF 150mm SHALL BE PREPARED AND
CURED.
LEAST A SET OF 6 CUBES OF 150mm SHALL BE PREPARED AND
CURED.
3 CUBES EACH AT 7 DAYS AND 28 DAYS SHALL BE
TESTED FOR COMPRESSIVE STRENGTH. THE TEST RESULTS
SHOULD BE SUBMITTED TO ENGINEER FORAPPROVAL. IF
RESULTS ARE UNSATISFACTORY NECESSARY
ACTION/RECTIFICATION/REMEDIAL MEASURES HAS TO BE
EXERCISED.
TESTED FOR COMPRESSIVE STRENGTH. THE TEST RESULTS
SHOULD BE SUBMITTED TO ENGINEER FORAPPROVAL. IF
RESULTS ARE UNSATISFACTORY NECESSARY
ACTION/RECTIFICATION/REMEDIAL MEASURES HAS TO BE
EXERCISED.
- A SET OF CUBE TESTS SHALL BE CARRIED OUT FOR EACH 30
Cum OF CONCRETE / EACH LEVELS OF CASTING / EACH BATCH
OF CEMENT. - WATER CEMENT RATIO FOR DIFFERENT GRADES OF
CONCRETE SHALL NOT EXCEED 0.45 FOR M20 AND ABOVE
AND 0.50 FOR M10 / M15 CONTRACTOR / MIX DESIGNER TO
CARRY OUT THE NECESSARY INITIAL (PRELIMINARY) TESTS.
FOR CONCRETE GRADES M20 AND ABOVE APPROVED
ADMIXTURE SHALL BE USED AS PER MIX DESIGN
REQUIREMENTS.
About Author:
I am Thomas Britto here to share my experiences in the civil engineering field to all my readers.Today many students are struggling to buy books at high prices. So I decided to start a blog and share my experience and knowledge with all my readers.
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