Degree of Workability and their Values as per IS 456:2000 | ||||
Degree of Workability | Where Used | Tests | ||
Slump(mm) | Compacting Factor | Vee Bee Test(seconds) | ||
Very Low | In Road work and compacted with road rollers | * | 0.75-0.8 | 10 to 20 |
Low | Light Reinforced section & Mass Concreting | 25-75 | 0.8-0.85 | 5 to 10 |
Medium | Hevaily Reinforced Section and Pumpable Concrete | 50-100 | 0.85-0.92 | 2 to 5 |
High | Piling Works | 100-150 | >0.92 | *** |
Very High | Trime Pipe | ** | >0.92 | *** |
* Its very low workable to test slump as slump will not collapse means slump will be zero | ||||
* Its so workable to test slump as slump will collapse instantly | ||||
*** Test can not be done as instantly concrete surface will be in plane with glass disk |
1. Safety Any Structure must be safe with appropriate factor of safety for loading that may come on it during its intended life. 2. Serviceability A structure should provide the service fro which it was constructed upto its whole life under service load. 3.Durability A structure should sustain loading for which it was designed and should also provide performance with safety and serviceability. Durability without serviceability and less margin of Factor of safety has no meaning. 4. Economy Design and construction of any structure should be economical without effecting safety, serviceability and durability. 5. Aesthetic Now a days aesthetic is also the criteria that effects design of structure.
nice explanation about compaction factor test
ReplyDelete