Technical Specification - UNDP

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18.6.2 Bitumen Materials Unless otherwise specified or directed by the Engineer, bituminous material shall be of Grade 60/70 penetration, and shall conform to the requirements of the specification. 18.6.3 Aggregate Materials Aggregate shall consist of coarse and fine aggregates and filler, if such is required to obtain the grading for the combined aggregate, shall be free from decomposed material, clay, organic matter and other deleterious substances. Coarse and fine aggregates shall consist of clean crushed rock or crushed gravel. The source of aggregate is considered to be the crushing site from which it is produced. 18.6.3.1 Coarse Aggregate The aggregate shall have at least one mechanically fractured face on 100% of the number of particles retained on the 6.3 mm sieve. In addition, for wearing course, the percentage of fully crushed particles shall exceed 70% of the total number of particles retained on the 3.35 mm sieve (percentage in number of fully crushed aggregates in total number of aggregates in the sample). 18.6.3.2 Fine Aggregate The fine aggregate shall be produced from the same crushing process as the coarse in that it shall be the result of a crushing process which provides coarse aggregate complying with the basecourse requirements. Uncrushed screened material will not be permitted. Crushed sand shall be produced by crushing clean coarse aggregate and shall not be thin, flaky or elongated. 18.6.3.3 Filler If additional material passing the 0.075 mm BS sieve is required for compliance with the grading limits it shall consist of crushed rock. Crushed rock shall be taken to refer to any materials which can be used as source to produce coarse aggregate suitable for basecourse. Where approved by the Engineer, Portland Cement, hydrated lime or other suitable approved material may be used. In all cases at least 75% of the added material shall pass the 0.075 mm BS sieve. The fine aggregate may be produced with the coarse aggregate from the same source in such that the processing of the natural deposit yields a combined aggregate that meets the requirements of the specification. 245
Minimum Test Requirements for Aggregates Crushing Value - Max. Aggregate Crushing Value (Individual stockpile) - 23% (BS 812) Flakiness Index of Aggregate - 30 %Max. (BS 812) Basecourse (Individual Stockpile) - 25% Max.(BS 812) Roadbase Wearing Course Los Angeles Abrasion (Individual Stockpile) - 35% Max. (AASHTO T- 96) Soundness - Sodium Sulphate - 12% Max. (AASHTO T-104) - (Individual Stockpile) Wearing course Basecourse and Roadbase. Elongation Index - 25% Max. (BS 812) (Individual stockpile) Wearing course 30% Max. Basecourse & Roadbase. Sand Equivalent - 45% Min. (AASHTO T-176) Unit Weight - Min. 1120 Kg/m3 (AASHT0 T19) Water Absorption - 2 Percent Max. (BS 812) Each source of aggregate or constituent of the proposed mix shall be tested and reported separately. Test shall be applied to samples or fraction of samples as recommended or detailed in the relevant British Standard (BS 812) or AASHTO. 18.6.4 Aggregate Combination Aggregates shall be combined to give a smooth grading conforming to Table for DBM roadbase/basecourse and Table for wearing course. The grading of the aggregate combination shall be uniform within the limits shown. Any rejection or addition of any size or sizes of particles to obtain a satisfactory uniformity shall be the full and complete responsibility of the Contractor. Fines or filler will only be added where the natural crushed material is short of such sizes and the addition is required to bring the combined aggregate within the specified limits. 246
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United Nations Development Programm
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Detailed Table of Contents GENERAL
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2.23.4 Tamping ....................
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3.9.27 Expansion Joints ...........
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6.10 MASTIC SEALANT: ..............
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12.15 BUILDER'S WORK ..............
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17.12 SPECIFICATION FOR STREET LIGH
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18.9.3 Signs Base Material ........
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21.1.1 Cleaning and Inspection of P
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1.2.3 "As-Built" Drawings All print
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1.7 Inconsistency in Contract Docum
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1.11 Lines and Grades The Contracto
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properly move, remove or care for t
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c) the substitution of proper and s
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1.26 Alternative Materials Should t
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1. The Contractor shall provide, er
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1.37 Inspection Where the approval
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The Contractor shall restore or rep
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approved in writing by the Engineer
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In addition to this telephone requi
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1.47.1 Schedule of Equipment The eq
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a testing certificate. Coarse Aggre
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Materials Frequency Relevant Standa
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Materials Frequency Relevant Standa
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Materials Frequency Standard Sampli
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Materials Frequency Standard Sampli
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1.49.3 Governing Standard and Other
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Prior to commencing any excavation
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flow to other lines using pumping,
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2.9.3 Alignment and Minimum Cover T
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In general, and unless other materi
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10.If additional fine material is r
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2. The sub-base material shall be c
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tampers, each weighing at least 10k
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When the embankment material is com
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Los Angeles Abrasion AASHTO T96 Max
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The compaction procedure and plant
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2.27.3 Construction No. 4 (4. 76 mm
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2.28 Wit-Match Macadam Road Base 2.
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2.28.6 Relevant and Standards The f
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2.31 Gabions 2.31.1 Description Gab
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Maximum stone weight Fifty percent
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2.33 Excavation & Backfilling of Tr
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equired of such backfill and fill f
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In estimating the quality of the su
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D. Construction / contraction / exp
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3.9.2.2.6 Clay Lumps and Particles
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nor sulphates such as sodium sulpha
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Calcium chloride or admixtures cont
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3.9.17 Concrete Testing - Workabili
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of concrete from which the shutteri
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3.10 Reinforcement Steel reinforcem
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3.14.2 General. The jointing materi
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Kerbstones shall be laid on concret
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3.17.3.3 Backfilling Backfilling ma
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3.1.4 The blocks shall be hard, sou
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F. All blocks shall be properly spr
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5.4 Granolithic Paving These shall
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5.8 Marble Pavings Marble paving sh
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5.11.6 Cement The Cement to be used
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5.11.14 Water For mixing concrete,
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Wear Resistance : Rate of wear resi
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Edge Details Where blocks do not fi
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Concrete block surfaceing shall con
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MgS04 Soundness (5 Cycles) (ASTM C
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Special edge blocks shall be used o
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GRADE DETAILS Grade Nominal Grading
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water outlets and under flashings.
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There shall be no air between the c
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Step (4) : Sand/Cement screed as sp
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7 CORROSION PROTECTION AND SURFACE
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Basingstoke) Corroless Epoxy Hampsh
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SCHEDULE OF SURFACE PREPARATIONS Sy
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8 CARPENTRY AND JOINERY 8.1 Timber
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8.15 Shelving Wrought shelving shal
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10 METAL AND ALUMINUM WORKS 10.1 Ge
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11 METAL & PLASTIC WORKS 11.1 Struc
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(3) Curing Curing systems shall be
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including 3.0 3.0 to but not ± 1.1
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The keys shall be supplied at the r
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11.2.5.8 Plastic Faced Flap Valves
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site with a transit protective pack
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Unless a higher grade of protection
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Electric cranes shall be supplied c
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11.2.6.3 Reinforced Plastic Liners
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12 PLUMPING AND SANITARY WARE 12.1
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12.4 Jointing Joints between pipes
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ore outlet, two-gallon capacity hig
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The entire system shall be slowly f
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Prior to pouring concrete in any st
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Metal ties or anchorages within the
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12.25.3 Workmanship All precast con
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- be fitted with heavy duty covers.
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With regard to the lime mortars gau
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irregularities of the wall surface
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14 GLAZING 14.1 Materials Clear gla
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WORKMANSHIP 14.10 Glazing to Wood w
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15 PAINTING AND DECORATION 15.1 Gen
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15.5 Steelworks including Windows,
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Aggregate: 4 - The used aggregate i
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2. Pressure forming Is a process li
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Our laboratory offers a testing ser
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the chemical to which it is exposed
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− − − − − − − − −
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192
Page 211 and 212: Fifteen) Sealing & Drumming of Cabl
Page 213 and 214: 8- Termination of Cables One) All j
Page 215 and 216: 12. Concrete Foundations for Masts
Page 217 and 218: − − 3rd) The door shall be flus
Page 219 and 220: 14. Street Lighting Luminaries & Fl
Page 221 and 222: down in the compartment and in no c
Page 223 and 224: 5th) Photometrical Requirements:
Page 225 and 226: 17 LOW VOLTAGE FLEXIBLE POWER CABLE
Page 227 and 228: Employer. Materials or workmanship
Page 229 and 230: 2nd) Conductors − The conductors
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Page 233 and 234: close-fitting guides shall protect
Page 235 and 236: - Supplier may submit any new treat
Page 237 and 238: 17.9 Lighting Beneath Over-Bridges
Page 239 and 240: 3. The tube light specified above s
Page 241 and 242: 7th) Materials to be submitted with
Page 243 and 244: - A pre-fabricated sloped canopy of
Page 245 and 246: 3rd) Contactor/AC.3 - A contactor s
Page 247 and 248: - Each feeder pillar must have one
Page 249 and 250: Particular attention should be paid
Page 251 and 252: 18 ROADWAY WORKS The specifications
Page 253 and 254: A full circulating swinging spray b
Page 255 and 256: 18.2.3 Construction 18.2.3.1 Prepar
Page 257 and 258: 18.3.2 Materials Bituminous materia
Page 259 and 260: The rate of application of chip sea
Page 261: 18.5.8 Payment The accepted quantit
Page 265 and 266: When tested according the Marshall
Page 267 and 268: liquid bitumen. The addition of min
Page 269 and 270: The Contractor shall calibrate his
Page 271 and 272: heights inscribed on a permanent ga
Page 273 and 274: The mixing temperature shall be det
Page 275 and 276: The leading half of half-roadway pa
Page 277 and 278: The motion of the roller shall at a
Page 279 and 280: 1. The Densification to be achieved
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Page 283 and 284: 18.8 Pavement Marking 18.8.1 Descri
Page 285 and 286: mixture. The intension of this stan
Page 287 and 288: 18.8.13.3 Whiteness The mean lumino
Page 289 and 290: The backface of the aluminium sign
Page 291 and 292: 19 PIPELINES AND PIPES WORKS 19.1 P
Page 293 and 294: socket/coupling and without inducin
Page 295 and 296: Crushing Test Loads of Reinforced C
Page 297 and 298: Pipes shall have an initial stiffne
Page 299 and 300: 19.1.12 Pipeline Construction 19.1.
Page 301 and 302: 19.1.12.3 Pipelaying Pipes shall be
Page 303 and 304: 19.1.12.6 Pipelines on Granular Bed
Page 305 and 306: Type of Pipe Deflection Criteria %
Page 307 and 308: In the case of Group 'B' pipe mater
Page 309 and 310: 19.1.12.16 Method of Measurement an
Page 311 and 312: Protective Coating bitumen epoxy bi
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20 PIPE WATER NETWORK The Specifica
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20.3.1.4 Protection of Finishes The
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Prior to commencing any excavation
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During excavation, materials suitab
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e determined by the Engineer. Measu
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20.4.1.16 Access Across Trenches Th
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20.4.1.21 Preparation of Subgrade T
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The deflection at joint of pipes us
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The thrust blocks shall be designed
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Filling of the distribution work wi
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All final connections of new pipeli
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Water mains to be abandoned shall b
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Before being installed, the valves
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20.4.7.6 Safety Procedures 1) Safet
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20.4.9.1 General 1. This specificat
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6. All ISO, or alternative, recomme
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4. Every coupling, and flange coupl
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4. Gate valves shall be of the resi
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1. Fire hydrants shall be ‘Street
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20.4.25 Repair Collars 1. Repair co
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20.4.30 Appendix A - List of Standa
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Material IS0/BS Standard Descriptio
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21 INSPECTION, TESTING AND COMMISSI
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Air Test for Gravity Sewers As soon
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As soon as possible after completio
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All apparatus, instruments and conn
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Technical Specification - UNDP

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