Quality Assurance Handbook for Rural Roads Volume-I - pmgsy
Quality Assurance Handbook for Rural Roads Volume-I - pmgsy Quality Assurance Handbook for Rural Roads Volume-I - pmgsy
3. Section-1500 3.2 Tests during construction TABLE 1503.2: QUALITY CONTROL TESTS PRIOR TO CONSTRUCTION S. No. Tests/ Check Frequency 1. Materials for concrete As in Table 1501.2 2. Concrete Mix Design For approval by EE 3. Grading for bedding and Joint filling sand As in Table 1503.1 4. Size and Compressive Strength of Paving blocks As per drawings 5. Subgrade and Subbase As in Table 301.5 & 401.3 6. Trial length before commencement of regular work Approval by EE 7. Design parameters(Joints Details, Pattern of laying and As per drawing End restraints) 8. Manufacturing machine or Semi mechanized method for As per contract blocks and Vibrating plate compactor The Quality Control Tests to be carried out during construction are indicated in Table 1503.3 Table 1503.3: QUALITY CONTROL TESTS DURING CONSTRUCTION S. No. Tests/ Check Frequency 1. Subgrade and Subbase As in Table 301.5 and 401.3 2. Compressive Strength of concrete (IS:516) As in Table 1501.3 3. Pattern of laying of blocks and End restraints At random (As per drawings) 4. Earthen shoulders(Width and camber) At random 5. Width of Joints between blocks At random 6. Tolerances (Level tolerance & Surface Regularity) At random 3.3 Quality Control Checks by AE/EE The Quality Control Checks to be carried out by AE / EE are indicated in Table 1503.4 TABLE 1503.4: QUALITY CONTROL CHECKS BY AE / EE S. No. Tests/ Check Frequency Designation of Inspecting Officer 1. Level and surface regularity Once for every work AE / EE 2. Dimensions of blocks (Size and thickness) - do - -do- 3. Performance of 30 m Trial length For Each Work AE/EE 4. General Workmanship -do- -do- 210
C. Do ’s and Don’ts Do’s Don’ts 1. Use only mechanised or semi-mechanised methods for manufacturing blocks and ensure that blocks are properly cured. 2. Ensure proper bedding and filling of joints using vibratory compactor. 211 Quality Assurance Handbook for Rural Roads 1. Do not use cement concrete with a characteristic compressive strength less than 30 MPa.
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C. Do ’s and Don’ts<br />
Do’s Don’ts<br />
1. Use only mechanised or semi-mechanised methods<br />
<strong>for</strong> manufacturing blocks and ensure that blocks are<br />
properly cured.<br />
2. Ensure proper bedding and filling of joints using<br />
vibratory compactor.<br />
211<br />
<strong>Quality</strong> <strong>Assurance</strong> <strong>Handbook</strong> <strong>for</strong> <strong>Rural</strong> <strong>Roads</strong><br />
1. Do not use cement concrete with a characteristic<br />
compressive strength less than 30 MPa.
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