Gravel smaller than sand is called fine sand. Fine sand is usually easily found on the beach and in the river. In civil engineering, according to the classification, ASTM called fine sand for gravels smaller than 4.75 mm and coarser than 0.075 mm of. 

Clay is one of the types of sticky soils that is used in construction. This soil is the result of erosion of metamorphic and igneous rocks and because of its very fine grains, it is also called colloid. The important point in using this material is to choose a quality sample of it. Clay is the best material that can be used to control the temperature of the building. 

Whitewash plaster: The price of whitewash plaster is very reasonable. This plaster is used to cover the surface and whitewash the walls, and its color is completely white. 

The combination of cement with water creates a hard material called concrete, which plays an important role in strengthening various structures. 

Iraq covers an area of ​​437,072 square kilometers (58th country in term of area, nearly a quarter of Iran). Most of Iraq is lowland and tropical. The west of Iraq is a desert and the east is a fertile plain, but part of Iraqi Kurdistan (northeast) is mountainous and cold. Iraq is also one of the largest oil-rich countries. The country has 143 billion barrels of proven oil reserves. 

Sand is produced by crushing rocks. Coarse stones are produced from the crushing and separation of natural stones, and finer sands, in addition to stones, also contain shells and corals. In civil engineering, aggregates smaller than 75 mm and coarser than 4.75 are called sand. Sands are divided into two categories according to the source and type of grains used in construction.

Clay soil is a term that refers to sedimentary rocks containing a significant amount of clay minerals, such as rock. Iran is one of the special regions of the world that has many resources; The export capacity of clay from the waters of Chabahar port to Pakistan shows that Iran has the richest resources.

Iraq also has houses in the city center with an average price of $1,896 per square meter and an average price of $875 per square meter outside the city. The wealthy and well-connected dominate the Iraqi housing market. Many of these wealthy individuals are tired of taking their money out of Iraq due to Western sanctions and are therefore turning to local investments within Iraq.