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 We offer unified steel collapsible masts of type МОС/1000 height 30-120 m
Application
Masts are used for radio-relay communication and/or telecommunication.
Principal features
Mast with braced from truss sections of triangular cross-section with side of 1000 mm.
Height of mast: Нmax = 120 м, Н min = 5 м.
Other: Н = Н min + 5 хn, where n = 1, 2, 3...7
Positioning
The lowest ambient temperature down to –40 С;
Black ice in the 3rd zone;
Wind loads to the 4th zone
Load of 4 antennas of 1,2 m diameter at the upper mark.
Design standards
According to SNiP (Building Norms and Regulations)..
Structure
Steel bolted structure consists of 5 m long sections. Strips are made from steel round cross-section profile (yield strength 245 N/mm2). Diagonal and horizontal elements are made from cold bent angle (yield strength 245 N/mm2). Structures are made according to SNiP (Building Norms and Regulations) and company standard ĮST8671693-2002.
Trusses for braces are made from hot galvanized steel wire. Number and cross-section of braces depends on height of mast and antenna load. A ground for antenna service is at the top of the mast. Inside the mast is equipped with stairs for assembly, safeguarding profile and special brackets for cable fastening and rest grounds.
Anticorrosive coating
All mast elements undergo hot galvanizing. Depth of coating is not less than 90 micrometers, for fasteners and trusses – 40 micrometers.
Signal paint
Adjusted with the customer. It is made by the joint-stock company Ltd. UAB “Vilniaus universaliųjų metalo konstrukcijų gamykla” at the factory. Painting in two layers: the first – epoxy priming, the second – polyurethane paint. Depth of the coating is not less than 120 micrometers.
Standard delivery of materials
Set of structure elements and necessary fasteners. Trusses of braces of necessary length with reserve as well as tightening devices. Assembly and cable stairs have elements for their fastening inside the mast. All materials are labelled and packed for transportation to the place of assembly.
Technical details of mast
|
Height of mast H, m |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
120 |
|
Distance to the 1st anchor of braces, m |
16 |
21 |
27 |
34 |
40 |
45 |
29 |
23 |
29 |
|
Distance to the 2nd anchor of braces, m |
|
|
|
|
|
|
51 |
56 |
68 |
|
Zone of wind loads |
IV |
IV |
IV |
IV |
IV |
IV |
III |
II |
IV |
III |
IV |
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