I have confusion regarding proctor compaction test. As per Is code 2720: 8, soil sample used should be sieved through 19mm sieve.Then what is the relevance of 4.75mm sieve? Please clarify me regarding the soil sample and the usage of ...
Abutment in bridge is designed as earth pressure and rest condition because abutments support the ends of the bridge and transfer the loads from the superstructure in to the ground. The abutments also support the bearing devices and the backwalls Moreover, bridge abutments connect the deck, or surfaRead more
Abutment in bridge is designed as earth pressure and rest condition because abutments support the ends of the bridge and transfer the loads from the superstructure in to the ground. The abutments also support the bearing devices and the backwalls Moreover, bridge abutments connect the deck, or surface of the bridge, to the ground and help support its weight both horizontally and vertically. On short bridges, one abutment is placed at either end of the bridge and connected to the embankment, sometimes including a retaining wall.
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Madeh Izat Hamakareem
As per Is code 2720: 8 section 4.1.1, Sieve No.4 is used to check whether aggregation materials after they have been broken into individual particles. and only individual particles shall be retained on the sieve no. 4. So, sieve No. 4 is used to check whether the aggregation materials have been brokRead more
As per Is code 2720: 8 section 4.1.1, Sieve No.4 is used to check whether aggregation materials after they have been broken into individual particles. and only individual particles shall be retained on the sieve no. 4. So, sieve No. 4 is used to check whether the aggregation materials have been broken down properly or not.
Based on ASTM D698-00a, Sieve no. 4 used to determine the method of compaction test. This Standard provides three Method of testing namely Method A, Method B, and Method C.
Method A may be used if 20 % or less by mass of the material is retained on the No. 4 (4.75-mm) sieve.
Method B Shall be used if more than 20 % by mass of the material is retained on the No. 4 (4.75-mm) sieve and 20 % or less by mass of the material is retained on the 3⁄8-in. (9.5-mm) sieve.
Method C —Shall be used if more than 20 % by mass of the material is retained on the 3⁄8-in. (9.5-mm) sieve and less than 30 % by mass of the material is retained on the 3⁄4-in. (19.0-mm) sieve.
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