Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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4. Section-300 (b) Carry out an insitu density test each at the following two locations: (i) close to the edge of the roadway (ii) any location selected at random (c) If at location (i), the insitu density is lower than the lower specified limit, it goes to show that proper precautions in regard to trimming at the verges were not taken by building the embankment initially wider than the design embankment and then trimming at the edges. (d) At location (ii), the insitu density test result should not be lower than the lower specified limit. If the actual insitu density obtained at the time of checking is lower than the lower specified limit, check on the action taken to rectify the defect and if any Non-Conformance Report was filled up. (e) Check, if the improved subgrade was compacted to 100% Proctor density. (f) Check, if the improved subgrade just after compaction was properly cured for 7 days with wet gunny bags, moist straw or sand, periodically sprinkled with water. 3. Side Slopes and Profile (a) Simple gadgets for estimating the side slopes from the horizontal distance (horizontality ensured by a spirit level) and vertical height of a T or L frame (Appendix 1, Para 1.8) can be used for monitoring the actual side slopes of a completed embankment. (b) A set of 3 observations can be expeditiously taken per km length, using such gadgets. 4. Stability and Workmanship of Cut Slopes (in case of hilly/ rolling terrain) (a) As per the design requirements of Cut Slopes, check if all the needed measures have been taken for erosion control (by providing suitable species of vegetation), drainage (catch water drains etc) and retaining structures like breast walls/ retaining walls etc. (b) Check on the actual slope(s) provided; extent and type of vegetation provided; the crosssection, lining and gradients of drains provided; dimensions adopted and materials used in retaining structures, to see if they all meet the design requirements. 5. Adequacy of Slope Protection (in case of high embankments/ hilly/ rolling terrain) (a) Check, using the simple gadgets described earlier, if the actual slopes provided are indeed within permissible tolerances of the design slopes. (b) In order to avoid any rain cuts along the slopes, check if the type of vegetation provided for erosion control is of the right species and that wherever required, top soil was indeed provided on completed embankment slopes before planting vegetation. If not, the deficiencies should be pointed out. (c) Check, if any design requirements like provision of stone pitching or gabions etc. are implemented satisfactorily by examining the quality of stone pitching (e.g if the drainage layer underneath has indeed been provided and the size and quality of stones meet the specified requirements) and in case of gabions, the wire mesh of the crate is plastic coated etc. (d) Check, if the drainage system provided is as per the design requirements. Any deficiencies observed should be brought out. 254
VISUAL SOIL CLASSIFICATION* From Wagner, 1957 255 Quality Assurance Handbook for Rural Roads ANNEX 300.1 a Boundary Classifications. Soils possessing characteristics of two groups are designated by combinations of group symbols. For example GW-GC, well graded gravel-sand mixture with clay binder b All sieve sizes on this chart are U.S. standard. Corresponding to the US 380 mm sieve size, the equivalent Indian Standard is IS 425 mm sieve size. * Source : Soil Mechanics by T.W. Lambe and R.V. Whitman, John Wiley and Sons, 1979
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Ministry of Rural Development Gover
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FOREWORD PREFACE ABBREVIATIONS QUAL
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Section 1100 PIPE CULVERTS 163 to 1
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PREFACE A good road network has an
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AE : Assistant Engineer AIV : Aggre
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1. BACKGROUND 1 Quality Assurance H
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3 Quality Assurance Handbook for Ru
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Material tests Workmanship tests Se
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2. Quality Management System (iii)
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2. Quality Management System A typi
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105. CONSTRUCTION EQUIPMENT 13 Qual
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B Do’s and Don’ts Do’s Don’
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201 & 202. SITE CLEARANCE A Methodo
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301. EMBANKMENT CONSTRUCTION A Meth
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(vii) Materials in a frozen conditi
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B. Earthwork for Subgrade (Cutting
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302. EARTHWORK IN CUTTING A. Method
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31 Quality Assurance Handbook for R
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B. Quality Control Requirements 1.
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SECTION 400 39 Quality Assurance Ha
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3. Section-400 (ii) Atterberg limit
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3. Section-400 C Do’s and Don’t
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3. Section-400 TABLE 402.2: GRADING
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3. Section-400 2. The pulverization
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3. Section-400 Table 403.3 : QUALIT
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3. Section-400 6. The cement stabil
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3. Section-400 6.3 Quality Control
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3. Section-400 14. In case the scre
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3. Section-400 TABLE 405.4: APPROXI
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3. Section-400 (ii) Grading Require
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3. Section-400 C Do’s and Don’t
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3. Section-400 408. Local materials
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3. Section-400 B. Quality control r
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3. Section-400 409. LIME-FLYASH STA
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3. Section-400 4. Surface Regularit
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3. Section-400 (ii) Slag The broad
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3. Section-400 6. The thickness of
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3. Section-400 2. Horizontal Alignm
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SECTION 500 BITUMINOUS 81 Quality A
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3. Section-500 (iii) In the final l
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3. Section-500 3. The primer should
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3. Section-500 B. Quality Control R
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3. Section-500 TABLE 504.2: PHYSICA
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3. Section-500 (b) Bitumen The bind
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3. Section-500 TABLE 506.1 RATE OF
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3. Section-500 TABLE 507.1: NOMINAL
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3. Section-500 5. Quality Control T
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3. Section-500 TABLE 508.1.1 : QUAN
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3. Section-500 Table 508.1.3: QUALI
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3. Section-500 B. Quality Control R
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3. Section-500 (ii) Immediately the
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3. Section-500 512. MODIFIED BITUME
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3. Section-500 TABLE 512.5 : REQUIR
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Annex-III & IV DETERMINATION OF IN-
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SIMPLE/HANDFEEL TESTS 600 600.1 Bri
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119 Quality Assurance Handbook for
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SECTION 600 121 Quality Assurance H
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3. Section-600 4. Build the courses
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3. Section-600 (v) Storage of mater
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3. Section-600 3.3. Quality Control
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700 : STONE MASONRY FOR STRUCTURES
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(v) Stone Masonry 133 Quality Assur
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4.2. Tests / checks during construc
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SECTION 800 CONCRETE FOR STRUCTURES
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3. Section-800 2. Proceed with conc
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3. Section-800 TABLE 800.3: REQUIRE
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3. Section-800 c. The strength of a
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3. Section-800 4.2 Tests / checks d
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SECTION 900 149 Quality Assurance H
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3. Section-900 2. Lower centering g
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3. Section-900 C. Do’s and Don’
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1000 STEEL REINFORCEMENT A. Methodo
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3.2 Tests during construction 159 Q
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1100: PIPE CULVERTS A. Methodology
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165 Quality Assurance Handbook for
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SECTION 1200 167 Quality Assurance
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3. Section-1200 A2 Substructures Th
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3. Section-1200 4. Provide 75 mm ce
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3. Section-1200 (2) Tolerances 1200
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3. Section-1200 3.2 Tests / checks
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3. Section-1300 A-3 Toe Protection
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3. Section-1300 2. Stones for pitch
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3. Section-1400 3. Give streamline
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3. Section-1400 2. Tests during con
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Page 204 and 205: 3. Section-1600 The prescribed road
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Page 244 and 245: 6. SECTION 1300: PROTECTION WORKS A
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Page 258 and 259: Appendix-2 Curing : Covering the c
Page 260 and 261: Appendix-3 Sr. Code/ Title of the P
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Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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