In this post we discuss Bolt Fasteners and their purpose, they may appear to be simple, but Bolts and their associated components play a vital role in the performance and durability of the Tower.
The question is, what is the correct thread protrusion? P.S. if you reference a Customer Specification, ensure you do your homework.
Bolt & Nuts are often overlooked or non-inspected, over torqued or under, some dry others lubricated.
Bolts for Tower assemblage come in different sizes and grades, depending on the application. The typical standards call for Grade 8.8 High Tensile Steel.
Take special attention when receiving fasteners and ensure that bolts have the correct marking, as per the Tower Manufacturers recommendations.
Under no circumstances may the use of plain steel bolts be used it Tower assembly.
Bolt sizes M10 and greater must be hot dipped galvanized to SANS 121/ISO 1461 or equivalent.
It is recommended to make use of stainless stell S/S for all fasteners M8 and smaller.
Electroplated coatings are not recommended in the Tower assembly due to lower corrosion resistance and durability. The use of Electroplated fasteners can exist on site and may vary from Customer and application, so be sure!
The selection of bolt lengths during assembly is important, take care not to use bolts that are too short as this may influence thread protrusion or when using a “double lock nut” system.
Hope you enjoyed these tips.
A Sister Concern of Swan Enterprise
2mohttps://youtu.be/eF1dpO2FBlg