Site Inspection of Concrete formwork

Site Inspection of Concrete formwork

The completed Inspection of concrete formwork shall be inspected before the reinforcement bars are placed in position. If proper form work is adopted honey combing, blow holes, grout less or discolouration of concrete are avoided and hence the finished surface of concrete will be good.Before concreting shuttering surface should be fully cleaned and shall be free from defect/deposits so as to give perfectly straight smooth concrete surface. Shuttering surface should be free from any damage and excessive roughness to its surface.

Below Site Inspection of Concrete formwork carfully follow:

During erection of concrete form work the following are checked.

1.Any member which is to remain in position after the general dismantling is done, should be clearly marked.

2.Materials used should be checked such that no wrong items/rejects are used.

3.If there are excavations nearby corrective and strengthening action should be taken to influence the safety of form work.

4.Bearing soil must be sound and well prepared and the sole plates shall bear well on the ground. Sole plates shall be properly seated on their bearing pads or sleepers-. The bearing plates of steel props shall not be distorted. The steel parts on the bearing members shall have adequate bearing areas.

5.Safety measures are taken to prevent impact of traffic, scour due to water and accidental impacts.

6.To ensure strength and stability of form work at intermediate stage, bracing, struts and ties shall be installed along with the progress of form work. ‘Tilting and overturning of steel sections shall be avoided or restrained.

7.When adjustable steel props are used, no damage and visible bents should be seen; steel pins should be provided, restrained latterly near each end.

8.Screw adjustments of adjustable props shall not be over extended.

9.If settlement/elastic shortening of props occurs,double wedges shall be provided for adjustment of the form to the required position. Wedges are used only at bottom end of single prop and should not be too steep and one of the pair should be tightened/clamped down after adjustment to prevent their shifting.

10.No member shall be eccentric over vertical member.

11.Adequate number of bolts and nuts and cantilever supports shall be provided.

12.Props shall be directly under one another in multistage construction.

13.Guy ropes or stays shall be tensioned properly

14.Provision shall be made for movement and operation of vibrator and other plant and equipment.

15.Required camber shall be provided over long spans.

16.Supports shall be adequate and in plumb.

Above concrete form work carefully inspect day to day activities.

Book to Read Advanced Construction Technology

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