Technical Specification - UNDP
Technical Specification - UNDP
Technical Specification - UNDP
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
2.33 EXCAVATION & BACKFILLING OF TRENCHES ALL SERVICE LINES OTHER THAN DRAINAGE,<br />
SEWERAGE & WATER SUPPLY ...................................................................................................................<br />
2.33.1 Excavation & Preparation of Tender Formation ..............................................................<br />
2.33.2 Protection of Existing Services .........................................................................................<br />
2.33.3 Backfilling of Trenches .....................................................................................................<br />
CONCRETE WORKS ..............................................................................................................................<br />
3.1 QUALITY OF CONCRETE ..............................................................................................................<br />
3.2 ACTION TO BE TAKEN IN THE EVENT OF NON-COMPLIANCE WITH THE TESTING PLAN. ..............<br />
3.3 AIR CONTENT OF FRESH CONCRETE. ...........................................................................................<br />
3.4 ADDITIONAL TESTS ON CONCRETE FOR SPECIAL PURPOSES ........................................................<br />
3.5 METHOD STATEMENT ..................................................................................................................<br />
3.5.1 Concrete method statement ...............................................................................................<br />
3.6 QUALITY ASSURANCE & QUALITY CONTROL. ..............................................................................<br />
3.7 STEEL REINFORCEMENT METHOD STATEMENT ...........................................................................<br />
3.8 QUALITY ASSURANCE & QUALITY CONTROL ...............................................................................<br />
3.9 CONCRETE WORKS SPECIFICATIONS ...........................................................................................<br />
3.9.1 Description ........................................................................................................................<br />
3.9.2 Materials ...........................................................................................................................<br />
3.9.2.1 General Requirements.................................................................................................................<br />
3.9.2.2 Fine Aggregate for Concrete and Mortar ....................................................................................<br />
3.9.2.2.1 Gradation ..............................................................................................................................<br />
3.9.2.2.2 Absorption 6% max. .............................................................................................................<br />
3.9.2.2.3 Fineness Modulus .................................................................................................................<br />
3.9.2.2.4 Sand Equivalent ( S.E. )........................................................................................................<br />
3.9.2.2.5 Soundness Test .....................................................................................................................<br />
3.9.2.2.6 Clay Lumps and Particles .....................................................................................................<br />
3.9.2.2.7 Passing #200 sieve 5% max. .................................................................................................<br />
3.9.2.2.8 Organic impurities ................................................................................................................<br />
3.9.2.2.9 Coarse aggregate for Concrete ..............................................................................................<br />
3.9.2.3 Gradation ....................................................................................................................................<br />
3.9.2.4 Absorption ..................................................................................................................................<br />
3.9.2.5 Abrasion......................................................................................................................................<br />
3.9.2.6 Soundness Test ...........................................................................................................................<br />
3.9.2.7 Clay Lumps and Friable particles : .............................................................................................<br />
3.9.2.8 Chlorides ( cl ) ............................................................................................................................<br />
3.9.2.9 Sulphate ( S03 ) ..........................................................................................................................<br />
3.9.2.10 Passing #200..........................................................................................................................<br />
3.9.2.11 Flakiness and Elongation Index .............................................................................................<br />
3.9.3 Ratio of Water loss ............................................................................................................<br />
3.9.4 Samples of Aggregates ......................................................................................................<br />
3.9.5 Water .................................................................................................................................<br />
3.9.6 Water/Cement Ratio ..........................................................................................................<br />
3.9.7 Trial Mixes ........................................................................................................................<br />
3.9.8 Cement ..............................................................................................................................<br />
3.9.9 Cement content. .................................................................................................................<br />
3.9.10 Admixtures ........................................................................................................................<br />
3.9.11 Measurement of Ingredients..............................................................................................<br />
3.9.12 Mixing Concrete ................................................................................................................<br />
3.9.13 Re-mixing ..........................................................................................................................<br />
3.9.14 Concrete Testing - Preliminary .........................................................................................<br />
3.9.15 Concrete Testing - Works ..................................................................................................<br />
3.9.16 Testing plan: .....................................................................................................................<br />
3.9.17 Concrete Testing - Workability .........................................................................................<br />
3.9.18 Frequency of Testing .........................................................................................................<br />
3.9.19 Transporting Concrete ......................................................................................................<br />
3.9.20 General Requirements For Placing Concrete ...................................................................<br />
3.9.21 Tamping For Compacting Concrete .................................................................................<br />
3.9.22 Vibrating For Compacting Concrete ................................................................................<br />
3.9.23 Curing of Concrete ...........................................................................................................<br />
3.9.24 Intervals During Concreting .............................................................................................<br />
3.9.25 Construction Joint .............................................................................................................<br />
3.9.26 Jointing Fresh to Set Concrete ..........................................................................................<br />
f
Change language