Indian standard codes for civil engineering

INDIAN STANDARD CODES USED IN CIVIL ENGINEERING FIELDS:

1. IS 269:1989                            Specification for the OPC 33 grade
2. IS 8112:2013                          Specification for the OPC 43 grade
3. IS 12269:2009                        Specification for the OPC 53 grade
4. IS 456:2000                            For the plain and reinforced concrete
5. IS 800:2007                            For the steel structures
6. IS 455:1989                            Specification for the Portland slag cement
7. IS 12600:1989                        Specification for the low heat Portland cement
8. IS 12330:1988                        Specification for the sulphate resistant Portland cement
9. IS 8041:1990                          Specification for rapid hardening Portland cement
10. IS 6452:1989                          Specification for high alumina cement
11. IS 1893(part1):2002               Criteria for the Earthquake resistant design of structures
12. IS 175( part 1):1987               Code of practise for Dead loads
13. IS 175( part 2):1987               Code of practise for Live loads
14. IS 175( part 3):1987               Code of practise for Wind loads on structures 
15. IS 175( part 4):1987               Code of practise for snow loads

 


 

Is 456-2000 basics

5 POINTS FOR IS 456-2000:
 

• The water to be used in concrete should not have pH value less than 6. (clause 5.4.2 page no-14)
• Spacer bars should be placed at a maximum spacing of 1 meter and closer spacing sometimes if necessary. (clause 12.3.2 page no-26)
• Permissible maximum free fall of the concrete may be taken as 1.5meter. ( clause 13.2 page  no-26)
• The diameter of the Tremie  pipe should not be less than 200mm (clause 14.2.4.a  page no-  28)
• Lap splices should not be used for the bars larger than 36mm, If so it can be welded. ( clause 26.2.5.1.a page no-45)

THE MINIMUM COVER FOR THE DIFFERENT MEMBERS OF THE STRUCTURE:

 Slab            = 20mm
Beam           = 25mm
Column       = 40mm
Footing       = 50mm

 

AUTOCAD 2017 SHORTCUT KEYS

IMPORTANT AUTOCAD 2017 SHORT CUT KEYS


L              - To draw the simple lines
 
C              - Circle
 
PL            - Polyline
           
REC         - Rectangle
 
CO           - Copy
 
TR with double times spacebar key     - Direct trimming
 
SC           - Scale of the objects
 
B             - To create block of the drawing
 
I              - Command used to insert the existing block
 
CHA       - Chamfer