CHECKS BEFORE CONCRETING

Satisfaction
Provided that a sound formwork method has been devised and that the work has been done in
accordance with the planned intentions of the persons responsible for the work, a successful casting
should result.
In the interests of accuracy and safely, however a careful and thorough inspection should always
be made by the supervisor as soon as the work is finished and before concreting starts. This inspection
should include , where applicable, satisfactory answers to the following items

1. Are bolts and wedges secure against loosening due to vibration ?
2. Has right number of ties been used and are they in the right places ?
3. Are all the ties properly tightened ?
4. Are all inserts, void formers and cast-in-fixings in the right position and secured ?
5. Have the stop ends been properly secured ?
6. Have all the joints been sealed to stop grout loss ?
7. Is the formwork correctly aligned and levelled ?
8. Are all the props in plumb? And at the right spacing ?
9. Are the props and struts properly tightened up and locked ?
10. Can the formwork be struck without damaging the concrete ?
11. Has the release agent been applied ? Is it the right one ?
12. Is the reinforcement correct ?
13. Has the reinforcement the right cover ? Are there enough spacers ?
14. Are the forms clean and free from rubbish or odd bits of timber or metal ? Tie-wire droppings
will cause a stain on the face of the concrete .
15. Is there proper access for concreting and compaction ?
16. Can any necessary inserts or box outs be done when concreting ?
17. Is all the ancillary equipments available, such as vibrators, lighting, skips, and hand tools ?
18. Is the curing equipments and covers ready, especially in winter ?
19. Have all the necessary guard rails and toe boards been provided ?
On completion of the initial check by the tradesmen and supervisors concerned, the work will
normally be inspected by the Clerk of Works or the Resident Engineer, before concreting is allowed
to begin.
The above checks, combined with a general check on the security and tightness of the forms,
can save accident and injury or even loss of life.
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