Description
Prefabricated concrete foundations are one of the most common and cheapest techniques for foundations of medium-sized towers with a height of 28 - 45 meters, and large guy masts. It is worth using them wherever ground conditions allow it (groundwater level above the foundation base, non-plastic soil), and where heavy equipment is easily available (HDS, crane). The main advantage of prefabricated elements is quick assembly - the foundation, even for a large structure, can be made by a team of several people in one or two days and the structure can be loaded almost immediately. The disadvantage is the quite expensive delivery associated with a large mass and volume, quite difficult positioning in the excavation, the need for quite precise preparation and leveling and hardening the bottom of the excavation with dry concrete, and finally, difficult precise positioning of the foundations relative to each other so that they later fit the planned and most often already constructed tower structure. . This last argument does not apply to guy masts. In general, it is worth leaving work with prefabricated foundations to a specialist team experienced in working with this solution - the previously mentioned advantages still make prefabricated elements the first choice in many investments of our clients.
Availability and installation method: :
- Prefabrication time: 4 weeks,
- Variable stock level,
- The product is factory protected against water,
- Should be installed above the groundwater level,
- The prefabricated element can be installed on the ground surface and covered with embankment,
- You should always consult the choice of foundation and its installation method with a local architect,
- Fill the bottom of the trench with a 20 cm layer of gravel, then a 10 cm layer of dry concrete. Concrete should be leveled to create a flat surface for foundations,
- The foundation procedure does not apply to prefabricated elements used as guy anchors for masts,
- The foundation hinge for the tower is included if the tower and foundation are ordered together
Multimedia:
Basic technical information:
| Foundation Size | Reinforcing steel weight [kg] | Weight [kg] | Base diameter [mm] | Cone height [mm] | Compatibility for masts* | Compatibility for mast shaft and guy wires** | Tower Compatibility*** |
|---|---|---|---|---|---|---|---|
| EF 115/200 | 31.5 | 860 | 1150 | 2150 | up to 40 meters | all versions | T500: T1000 up to 24 meters |
| EF 150/200 | 49.4 | 1220 | 1500 | 2150 | up to 60 meters | x | for T1000-28 |
| EF 160/230 | 66.3 | 1515 | 1600 | 2450 | up to 70 meters | x | for T1000-30 |
| EF 180/250 | 81.8 | 1830 | 1800 | 2450 | up to 90 meters | x | up to T1000-36 (up to 45 meters conditionally) |
* additional data available for architects
** compatibility data assumes maximum permissible antenna load, average soil conditions, groundwater level below the foundation base, wind and icing zone I
*** AluPro recommends static calculations and consultations with an architect for each installation to ensure optimal and safe selection of the foundation version
