The company COMPACT-PROJECT.PL SP. Z .O.O. was contracted to design a base station, located in the Śląskie Province in difficult ground conditions. The design documentation included an analysis of the tower structure and its foundations.
After an analysis of the geotechnical conditions of the building foundation concerning a telecommunications tower, it was found that the ground down to the examined depth of 10.0 m below ground level is characterized by complex soil and water conditions. The problem encountered was the occurrence of firm warps with humus clay and humus sand interlayers from the ground surface, i.e. weak soil, which do not allow the application of the most popular spread foundation, e.g. in the form of spot footing or ground-bearing floor slabs.
Weak soil at the given location appeared only at the depth of about 6.5 m below ground level in the form of firm clay with limestone bits. In such a situation it is necessary to use a deep foundation, e.g. in the form of piles, micro piles, or concrete or reinforced concrete wells.
In this case, the foundation of the tower was designed to apply concrete ring wells. The adopted foundation depth of the well was 6.8 m below ground level. A monolithic slab was planned to be fixed at 1.80 m below ground level. Truncated pyramid cores were exposed from the slab under the kerbs of the tower.
The slab was anchored in three concrete ring wells. A load-bearing frame was placed in the wells. The lower four rings were filled with base concrete, while the upper ring and the foundation slab were filled with bearing concrete.
On the basis of previous experience, Compact-Project.PL Sp. z o.o. in Łódź can be recommended as a reliable partner to perform tasks related to expert opinions and technical advice as well as construction projects.
