CONCRETE PLACEMENT INSPECTION CHECKLIST (SITE INSPECTOR) QC ENGINEER. MATERIAL ENGINEER
Quality control of concrete starts with inspection of concrete during pre-placement, during placement and post-placement. Type of inspection of concrete depends on type of concrete, i.e. PCC or RCC, type of elements to be casted, such as RCC slab, columns, footing, beams, walls etc. Although it is easy to remember number of checks during inspection of concrete member, a checklist is always required for record of the placement of concrete and quality control measures taken at site. It is both beneficial to contractor as well as engineer to maintain the record of checks, so that they can produce it in case of any discrepancy. It also allows becomes a proof of quantity of concrete work done by the contractor, so that no discrepancy arises during billing. The checklist also notes the number of cubes taken for the given work and its id is noted in the checklist, so that when cube test results arrive, it becomes easy to identify the structural elements for the given cube test results.
Following is a sample concrete placement checklist for RCC and PCC works which must be followed every time when concreting work has to be done. All the empty space has to be filled and remarks if any shall be written in remarks column. Date of inspection of pre-concrete, during placement and post-concrete placement shall be noted as these steps may not be performed on the same day. Signature by contractor supervisor and engineer is done after each inspection.
CONCRETE PREPLACEMENT CHECKLIST
S No CHECKLIST REQQUIREMENT
1 Centre line As per drawing
2 Formwork & Staging As per drawing & in exact plum
3 Construction joint location* As per drawing
4 Steel reinforcement diameter / spacing & coating* As per drawing
5 Cover to the reinforcement and overlap* As per drawing
6 Shuttering Aligned as per drawing and in plumb
7 RLs and reference levels As per drawing
8 Embedment part check, i.e. insert plates, nipple etc As per drawing
9 Placement of water stoppers, if any*
10 Location of construction joint
11 Water tightness of shuttering, if required No water seepage allowed
12 Quality of water Potable and clean
13 Measuring jar for water pouring As per water content requirement
14 Quality of materials As per specification
INSPECTION DURING PLACEMENT OF CONCRETE
SNo CHECKLIST REQQUIREMENT
1 Water cement ratio As per specification
2 Surface preparation by mortar bedding Fresh mortar
3 Slump testing* As per requirement
4 Adequacy of vibration 40mm and 60mm needle required
5 Segregation of aggregates Not allowed
6 Removal of temporary spacers and ties* To be removed
7 Check for shuttering prop displacement / settlement Not Allowed
8 Number of cubes taken for testing with identification
No.: ________ Id: __________ 3 No’s for RCC > 6m3
3 No’s for every 5m3
9 Continuity of operations No break in between concreting
POST PLACEMENT INPSECTION OF CONCRETE
Sl. No. CHECKLIST REQUIREMENT
1 Observation for honeycombing Not Allowed
2 Line & Level As per drawing
3 Surface finish As per drawing
4 Cracks and air bubbles Not Allowed
5 Method of curing As specified
6 Checked for stripping/Removing of formwork support etc. after specified duration of stripping time. Yes No NA
7 Checked for position of embedment Yes No NA
8 Repair and finish all surface defects by specification / approved method Yes No NA
9 Surface of part of structure is alright and allowed for subsequent activity / backfilling Yes No NA
10 Others, if any
* Only in case of RCC and not PCC