Category Archives:Service
Aluminum masts, truss masts, aluminum towers, radio towers, communication towers, stage constructions and trusses, truss solutions, advertising constructions, radio masts, communication masts, architectural solutions, Wifi networks, LTE, WLAN

Eurocode in my country is different than in other regions, can you handle this?

Yea, our static engineer can prepare projects and calculations both in German and/or English plus we can comply with all European so called „National Annexes”. We do posses most of the country specific norms, but if we do not, and you do – we will work on your set of documents (verify copyright before sharing).

If you are not familiar with Eurocode idea  – we can work with your design/engineering office, or legal office that handles the paperwor for you. Here are some basic facts about Eurocode

Okay your prices are fine, but how about transportation costs?

We are production company at first, so we seek for local resellers. This strategy is due to cost of transportation that is quite good if we ship many items at one time, and may be a problem when we send You just eg. one ballast mast. But yes, we do sell small quantities and single copies through the whole Europe. In some markets our base prices are so attractive that even relatively high transportation cost lets us keep our competitive edge.

1. Small items (less than 2 meters in lenght, less than 15 kgs in weight)  are  sent with UPS or DPD services (depending who ofers best deal on certain shipment). Standard cost for one 2 meters section of M400 mast is around 55 Euros to most locations. Brackets, anetna holders and small accessories are normally 15-20 Euros.

2. Mid sized loads are shipped via online dispatch markets (that match loads with free spaces in participating trucks). We use for that, and many others. Usually it is around 200 – 300 Euros for a M400-20 mast or T500-16 tower. It varies on occasion and destination (popular ones get better deals)

3. Big loads (10-30 M400-16 masts) are shipped either by our own Van (we have VW Crafters 19 cubic meters + trailer that doubles the load) or by rented lorry (108 cubic meters or more). Our own transport costs around 0,6 Euro one way (Warsaw to your destination) and we can then install the product at your site. Lorry is around 1-1,20 Euros

Time: It usually takes 3-4 days to catch a good deal for dispatch. If time matters then we suggest Altruss VAN option.

I’m from England, France, Germany – you name it, Altruss is located elsewhere – will it work?

Definitely yes. We are all EU now – so export/import is easier than ever. No VAT in export,  unified invoices, PayPal or SWIFT payments mean we can exchange cash for goods as quickly and comfortably as in our local grocery market. Never tried to import? Now it’s a good time!

Altruss speaks English, Russian, Polish, German – so there is big chance we will not be lost in translation. Okay you do not feel comfortably to speak English (I know you French people 😉 then still we do have google translate. In extreme situation we can hire an interpreter of your language. Why not? Just let us know.

Altruss and prviously Alupro has 8 years of experience in export to most of european markets. Our towers/masts work in Germany, Austria, France, Spain, Slovakia, Czech Republic, Sweden, Norway. Most of our clients stay with us for next/future projects.

We do static calculations in accordance to Eurocode and its local extension (annexes). So you may get all the paperwork tailor cut to your market reality.

If product certification is needed: we work with our partner company Rolstal to provide any possible proof of quality including set of TUV, GSI-SLV, marine certificates. Most important we comply with ISO 3834 and ISO 1090 norms. Is your legislation still not happy? We can do bolted version of what you need, so no certification beyond „CE” declaration shall be needed.

We work 7:00 AM untill 20:PM CET – uder e-mail, Skype and phone, so It shall be not a problem to get answers from us.

Okay how about installation and transportation? Small quantities, single units are sent with courier services or through online dispatch markets (like Bigger loads get dedicated transportation from us (we take care of everything). If needed our company team can come and do the installation for you guys anywhere in Europe.

Service of mast and tower, why sould I bother?

Masts and towers, both aluminum and steel are constuctions of high risk. Damage may cost loss in property or even life, so it is good to service your mast before it breaks.

Aluminum masts are resistant to corrosion, but not so much to frost cracking. Once each year, in spring preferably, qualified personel should chceck for any signs of frost damage. Any cracks found shall be welded, some poles echanged for new, and drainage patented. Altruss masts are well prepared to handle unwanted water, so less prone to frost cracking.

Second issue –  guy wires. In older installations it was usual to use 3 mm wires. Most of them were zinc-plated years ago and now are very fragile because of corrosion. We recommend usage of good quality guy-wires 1×19 type, minumum 4 mm made in Europe  – even for smallest masts.

Third thing is guy wire tension – this has to be corrected due to natural wire wear that results in wire lenght increase. Always chceck with mast producer what amount of tension shall be used. If possible measure it (some tensors have a gauge for this).

Aluminum towers are much more robust and require less work. All that has to be checked is: signs of frost cracking and corrosion to the bolts. Once in 5-10 years a verticality check is suggested (done by land surveyor). As gound under the towers settles unevenly the whole tower may change its centre of gravity. This can be changed with correction rings.

In case of steel constructions a anti-corrosion checek must be conducted, and any stained spots must be repaired. During u-bolts change (and other metal on metal components as well) we shall take under consideration electrochemical potential of used materials. High difference here may lead to amazingly quick corrosion that may be dangerous for the structure rigidity.

How do I place guy wire anchors the right way?

In general it is advised to build masts symetrically – for 3 cornered trunks it would be 120 degrees each. Anchors sholud not be closer to the mast than half of its height. For example for a 50 meters high mast, anchors must be at least 25 meters apart from its axis.

How do we attach antennas the smart way?

Telecommunication mast, as each truss construction has nodes, that are the most robust places in the whole structure.  Every force we use on the mast shall concentrate around these nodes, no matter if during building or choosing a place for guy wire mounting points or finally when mounting antennas. The node is a place where cross members meet on the corner pipe.

What information matter when we brief you Altruss to make a mast for us?

Both masts and towers are quite resistant for vertical loads. Clients often ask us if a certain type of mast will carry some given weight of antennas in kilograms. The answer is nearly every time the same: yes sir. This is because for mast side loads are much more dangerous and influence the construction more. Side loads occur mainly because of the wind pressure on the antenna faces, and are directly proportional to their total surface. This is what counts.

For well designed mast the maximum Y axis  deviation from wind pressure is 1:100 of its height at max wind speed in  given wind zone. As you see for us the key information about your project is: location where the mast is going to be installed, and total surface of antennas you want to put on your newly bought truss.


Are welded constructions any better than bolted?

A big communication towers form problems with transportation. For example Altruss H32 tower has base size of 4,5 by 4,5 by 6 meters. Not an easy piece to drag on a higway. Most of our constructions are hybrid  – lower sections are bolted, and upper (small ones) welded. Welded sections are quicker to install on site, and less things may go wrong with them during installation, but they are more prone to frost cracking, and welding errors. Bolted sections are little more expensive to manufacture and take more time to assembly, but transportation is cheaper and easier, plus there is nothing that may go wrong with them when assembled (bolts may become rusty after couple of years, but not much more).

As for stiffness (that is common concern) they perform the same. Bolted constructions show advantage when they are done with the job in one place (easier to disassemble and sell, or bring to another location)