This article is continued from the article “Foundation Sinks Part 1“

To round the ring, the length of iron were obtained from cross-sectional circumference of a circle multiplied by the number of ring foundation gained from the long shaft, concrete foundation, and then divided by the distance of the ring (between 15-20 cm). The calculation of material requirements or material for the foundation of divisive pitting of the stone with a cement mortar : 3 sand is

1. Cut stone as much as 1.2 m3

2. Sand pairs of 0.324 m3

3. PC as much as 4.23 bags of cement

C. Advantages and disadvantages

When using a type of foundation wells, there are several advantages obtained, as follows.
1. As an alternative to the use of deep foundation stone materials from nature when quite a lot and do not allow the transport of piling.
2. No heavy equipment required.
3. Cheaper cost for a particular place

Besides its advantages, there are also some deficiencies are often faced when using footing pitting type, as follows.
1. Base pair results in the interior can not be controlled because of the stone and mortar was thrown from above by using feelings

2. The use of extravagant materials.

3. No resistance to horizontal force because there is no reinforcement

4. Very difficult to use for the land in the mud because of difficult excavation.