Monday, 14 August 2017

IS codes for civil engineering.

* IS: 456 – code of  practice for plain and reinforced concrete.
* IS: 383 – specifications for fine & coarse aggregate from natural sources for concrete.
* IS: 2386 – methods of tests for aggregate for concrete.
* IS: 2430 – methods of sampling.
* IS: 4082 – specifications for storage of materials.
* IS: 2116 – permissible clay, silt & fine dust contents in sand.
* IS: 2250 – compressive strength test for cement mortar cubes.
* IS: 269 – specifications for 33 grade OPC.
* IS: 8112 – specifications for 43 grade OPC.
* IS: 12269 – specifications for 53 grade OPC.
* IS: 455 – specifications for PSC (Portland slag cement).
* IS: 1489 – specifications for PPC (Portland pozzolana cement).
* IS: 6909 – specifications for SSC (super sulphated cement).
* IS: 8041 – specifications for RHPC (Rapid Hardening Portland cement).
* IS: 12330 – specifications for SRPC (sulphate resistant portland cement).
* IS: 6452 – specifications for HAC for structural use (high alumina cement).
* IS: 3466 – specifications for masonry cement.
* IS: 4031 – chemical analysis and tests on cement.
* IS: 456; 10262; SP 23 – codes for designing concrete mixes.
* IS: 1199 – methods of sampling and analysis of concrete.
* IS: 516 – methods of test for strength of concrete.
* IS: 13311 – ultrasonic testing of concrete structures.
* IS: 4925 – specifications for concrete batching plant.
* IS: 3025 – tests on water samples.
* IS: 4990 – specifications for plywood formwork for concrete.
* IS: 9103 – specifications for concrete admixtures.
* IS: 12200 – specifications for PVC water bars.
* IS: 1077 – specifications for bricks for masonry work.
* IS: 5454 – methods of sampling of bricks for tests.
* IS: 3495 – methods of testing of bricks.
* IS: 1786 – cold-worked HYSD steel rebars (grade Fe415 & Fe500).
* IS: 432; 226; 2062 – mild steel of grade I.
* IS: 432; 1877 – mild steel of grade II.
* IS: 1566 – specifications for hard drawn steel wire fabric for reinforcing concrete.
* IS: 1785 – specifications for plain hard drawn steel wire fabric for prestressed concrete.
* IS: 2090 – specifications for high tensile strength steel bar for prestressed concrete.
* IS: 2062 – specifications for steel for general purposes.
* IS: 226 – specifications for rolled steel made from structural steel.
* IS: 2074 – specifications for prime coat for structural steel.
* IS: 2932 – specifications for synthetic enamel paint for structural steel.
* IS: 12118 – specifications for Polysulphide sealants.

Tuesday, 8 August 2017

A good civil engineer should know many basics and Topics

1)- BUILDING MATERIAL AND CONSTRUCTION

Lab test of Rock,Brick,Cement,Aggregate,Concrete etc

ex.

sand + Cement = Mortar

Mortar + Coarse aggregate = Concrete

Different Test of Brick

1) Crushing strength test by UTM in lab

Standard result are 10.5N/mm2 (1st class) 7.5(2nd class) 3.5(3rd class)

Stand. Size of brick- 19x19x9

2)- Water absorption test - Not more than 20% Of water by Wt. If immersed in water for 24hr - 1st class

Not more than 22% water- 2nd class & 24% - 3rd class

Many other test of brick- Hardness test,Toughness test.

English,Fleming,strecher & Header bond of brick masonary.

CONCRETE

Strong in Compression & weak in tension (i.e we provide steel bar)

Grade(Nominal mix)- M10- 1:3:6 M15- 1:2:4 M20- 1:1.5:3 M25- 1:1:2

Know about admixture

Geo-technical engg.

Index properties of soil, Phase diagram of soil, Classification of soil