Bunker Kolomaki Quick 2 – 4000
The best bunker for quick installation at the lowest cost. Intended to offer a secure shelter.
|Area of the underground space (m2)||8,8|
|Overall dimensions (HxLxW, mm)||2500х6570х2400|
|Price (€ ex VAT)||8 735|
The sturdy bunker with a horizontal entry that can be positioned beneath a building or in a level spot. The bunker is completely constructed and ready for concreting, making installation simple, rapid, and affordable. A suitable safety depth is kept with a bunker depth of up to 2.5 meters.
A simple, attractive staircase made of durable metal with an aluminum step profile and a height-appropriate entry makes the bunker even simpler to use.
Kolomaki Quick is extremely strong and secure due to its numerous reinforcing ribs, metal reinforcement for pouring concrete around the bunker, and vaulted ceiling construction.
We use cutting-edge welding technology and premium polypropylene to assure the endurance of our bunkers. Our bunkers don’t require any special maintenance or safeguards against metal degradation.
Using Bunker Quick 2 4000, a family of up to eight people may weather a disaster in safety. There is space for up to 8 pieces of furniture, like chairs and two beds. The bunker has adequate room for four beds and other essential objects, so a family of four can utilize it comfortably and for an extended period of time. We suggest using folding beds and chairs for more space.
This bunker is available in smaller sizes. For smaller variant see:
|Area of the underground space (m2)||8,8|
|Overall dimensions (HxLxW, mm)||2500*6570*2400|
The delivery of the bunker is inexpensive because it is made across Europe and the Czech Republic using regular transportation without requiring any special authorization. The cost of the bunker does not include the delivery because it is calculated separately.
Please, contact us for shipping costs.
Tel: +420 777 072 100
Installation of a bunker for concreting Kolomaki Quick:
The bunker for concreting is also suitable for places with a higher static load.
At the selected location, we make a 20 cm wider excavation on each side of the bunker (see drawing) to create a working space for concreting.
The bunker is placed on a compacted and levelled 100 mm thick layer of aggregate fraction 8/16.
We will install the bunker using mechanisation. After settling the bunker, we will make a concrete slab with a height of 100 mm on the floor. Due to the load during concreting, after the bunker floor has hardened, it is necessary to support the ceiling using 4 stands and one wooden beam in the center of the ceiling.
The walls of the bunker must be reinforced with 2 longitudinal wooden prisms 80/80 mm placed at a height of 500 and 1000 mm before concreting. These prisms will be spanned using horizontal wooden spacers of 80/80 mm placed approximately at quarter lengths of the beams. Only then is it possible to concrete the cellar walls.
If the bunker is installed in places with a high groundwater level, drainage must be provided around the bunker with water drainage outside the bunker. The bunker is not intended for places with groundwater.
We must not pour more than 100 cm of concrete in one day. The thickness of the concrete around the bunker is recommended to be 150 mm.
Stand-off and removal of struts can only be done after the concrete has hardened sufficiently – at least 10 days.
The construction trench must be excavated in a sufficiently large area to maintain the width of the working area. The slope, or the slope of the excavation, will result from the local geological conditions. The recommended slopes of the construction pit walls are:
|Ground type||Ratio of height to length of the slope|
|Dusty clay||1 : 0,25|
|Clay gravel||1 : 0,25|
|Earth||1 : 0,25 – 1 : 0,5|
|Clay||1 : 0,25 – 1 : 0,5|
|Clay loam||1 : 0,25 – 1 : 0,5|
|Sandy clay||1 : 0,5|
|Boulder sand||1 : 0,75|
|Loamy sand||1 : 1|
|Sandy earth||1 : 1|
|Sandy gravel||1 : 1|
|Rocky earth||1 : 0,5 – 1 : 0,2|
In the case of more complex geological conditions, the structural engineer will determine the protection of the walls of the excavation.
The dimensions of the construction excavation are determined by the type of bunker – see drawing. The maximum height of the embankment in standard installation is 40 cm above the basement.
Location relative to buildings:
The bunker must not be bellow a building. Loads caused by any construction could lead to deformation of the structure. The bunker must be at least 1 meter away from the building.
Location on a slope:
If the bunker is located on a slope, it is important to check the terrain to prevent landslides or other complications. A static calculation and assessment of the suitability of the stability of the subsoil or slope is carried out by a structural engineer or building designer every time the bunker is placed on a slope.
Non-standard mounting situation:
All non-standard assembly situations must be assessed by the structural engineer or building designer in order to exclude possible damage or imminent danger. On the basis of the project, a static assessment prepared by a professionally qualified authorised person must also be provided.
The bunker must be transported, loaded and unloaded with care. Impacts during loading and unloading are not allowed. Fastening the cellar during transportation must be done carefully, it is not allowed to use excessive force that can lead to deformation of the product body. It is recommended to load and unload the bunker using a crane, excavator or a forklift.