K R SHAJI

K R SHAJI CONSTRUCTION NOTES.& INFORMATIONS….. Architectural, Civil and Structural Engineering basic notes and practical side site activities / Informations

28/08/2026

Plinth beam concreting

Shuttering on plinth beam rebars
28/08/2026

Shuttering on plinth beam rebars

Plinth beam rebars
28/08/2026

Plinth beam rebars

Scene of footing rebars in a rainy day
28/08/2026

Scene of footing rebars in a rainy day

27/08/2026

Column concreting

What is the pile cage?It is a cylindrical arrangement of reinforcement bars consisting mainly of:- Main longitudinal bar...
27/08/2026

What is the pile cage?

It is a cylindrical arrangement of reinforcement bars consisting mainly of:

- Main longitudinal bars-- vertical bars running along the pile length.
- Circular links/spiral bars-- tied or welded around the main bars to hold them in position.
- Stiffener/ring bars-- sometimes provided to keep the cage rigid during lifting and lowering.
- Cover spacers-- attached to the cage to maintain the required concrete cover from the soil/bore wall.

27/08/2026

Auguring in mini piling means drilling the ground using an auger (a rotating drilling tool) to create the borehole for the pile.

27/08/2026

In mini-piling , caging means preparing and lowering the reinforcement steel cage inside the drilled pile bore before placing concrete.

27/08/2026

So the overall mini-piling sequence is:

Soil investigation → Design → Setting out → Rig positioning → Drilling → Bore cleaning → Reinforcement → Concreting/grouting → Casing withdrawal → Pile curing → Pile head trimming → Pile cap → Column

27/08/2026

Preliminary steps in mini-piling

1. Soil investigation

* A soil investigation is carried out first.
* Boreholes/SPT tests determine the soil strata, groundwater level and bearing capacity.
* From this, the structural/geotechnical engineer decides the pile diameter, length/depth and number of piles.

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Kochi
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