It has been mentioned that there are many types of foundation that can be selected. In order to facilitate understanding, will be explained separately each type of foundation, both in volume and how to calculate gains and losses on their utilization.

1. The foundation stone lane pairs

This foundation is used for simple buildings on the original soil is good enough. Usually between 60 cm – 80 cm depth of the foundation footprint with a width equal to height. Supplies of raw materials for the foundation is cut stone (river stone / mount), pair of sand, and cement PC (gray cement).

a. Calculating the volume of foundation

As for how to calculate the volume of the foundation stone lane pairs this time as follows.

Volume = Area of cross section x Length of foundation

Area of reservoir = ( (a + b) / 2 ) b

Description: a. = Width of foundation
b. = Height of foundation
c. = Width of bottom of footing
b. Calculate the material needs

Having obtained the foundation volume in units of m3, was calculated as the amount of material or material needs for each m3. It is assumed that the mortar used for every m3. Is one part where the PC: 3 parts sand to obtain
1. Cut stone as much as 1.2 m3,
2. Sand pairs of 0.324 m3,
3. 4.32 bag of cement as much as a PC.

C. advantages and disadvantages

There are several advantages that can be obtained when using a type of foundation stones times lane pairs, namely

1. Easy implementation
2. Fast time workmanship
3. Easy to get a cut stone (generally for the region of Java Island)

besides its advantages, there are also some deficiencies are often faced when using a type of stone masonry strip footing, i.e.
1. Cut stone is difficult to obtain, especially in certain regions
2. Become expensive to certain areas
3. More expensive when used for multilevel homes