Basic thingks to learn for column checking as an engineer

Basic things to learn for fresher civil engineer:-

This post is only on Site work (Checking & Managing).

Checking

Let’s go with basic checking like

1.   Column checking

2.   Slab checking

3.   Concrete checking

4.   Footing checking

As a civil engineer we have to check R.C.C work & Shuttering work (form work) as well as finishing work which is very important.

Column Checking:-While an engineer goes for checking column he/she should know what things should be checked in column 

   1. Center line

      2. Starter or Column

      3. Concreting

As there is practice of direct making column mold without starter .I have written starter or column in check list.

First we should know what center line is, Center line tells us what is the position, phase, center point of column.

For checking center-line of column one should have center-line plan and he/she should check the column number which is to be checked and the column distance in x and y direction which is in plan given in terms of distance between column which is to be checked and other column in that alignment. 

After checking the distance you should get the appropriate distance between two columns. IF you get the correct distance mentioned in drawing by measuring that distance with measuring tape your column is in proper position now you can set up the starter or directly set up the mold for column that depend upon the practice of an engineer.

Now checking goes in 2 type R.C.C and Shuttering.

Shuttering:-

As the mold of column is set you should check the shuttering material do it has leakage or hole and the alignment of column (vertical & horizontal). In Indian site language if we say (modhia aur side line me hona chaiye).

Check if proper oiling is done on mold from inside. Proper oiling of mold helps in god finishing smooth surface and it becomes easy to remove shuttering without damaging shuttering.

After this you should check the plum of the column that is column is on 90⁰ not tilted it is checked with help of plumb bob.

Column has four side so it is must to check plum on two side of column (longer and shorter) side but on longer side on both end and in shorter side in the middle  and while checking plum you should check at two point at top and at bottom 

If you don't get same distance at top and bottom  you should make carpenter make it correct.

In Indian site language we say it as olamba should be equal at top and at bottom.

Last thing to check in shuttering is Diagonal side it helps u in knowing is column proper rectangular or it is not if no you should get it correct and check proper molding is done or not

 

Both diagonal side should be equal in measurement to maintain column rectangle in shape.

In Indian site language we say it as katkona we should get same on both  diagonal side.

R.C.C (steel Checking):- In steel checking you should check the alignment of steel bar, number of vertical bar and there diameter of bar as per given in the drawing(R.C.C footing and column drawing).

Check the links provided(Ring) if the number of vertical bar are more or steel dia is bigger say  12mm,16mm,20mm it is provided with Links and master link (Ring and Chipya, Master ring).

And check the master ring is provided alternately with links.

After checking this check if the links are tied properly with binding wire.

AS R.C.C and Shuttering work is checked now it’s time for concreting.

Concreting:- At time of concreting Engineer should Check the mix proportion made by worker and homogeneity of concrete if homogeneity is not proper he should adjust the aggregate, sand contain in the mix and  Engineer should give the marking till what length column is to be filled.

Calculation for what length column to be filled

Floor to floor height=2.9m

Beam depth(beam having maximum depth of all beam)=say 0.6m

The column to be filled =2.9-0.6=2.3m

After getting the length to be filled on one column(blue column)Transfer that length (level of filling) with help of level tube to all other column which you need in same level.

While pouring the concrete the vibrator should be properly inserted and concrete should be compacted to avoid honeycombing  and voids.

As concreting is in process tell the worker to check the position of steel as it shifts as the pressure of concrete falls on it because if column steel shifts it cannot be brought in proper place after concrete get hard which will lead to improper distance of steel while shuttering again for further work like slab and beam. 

  Thanks for reading further topics will be covered in next post.