Latest news, project stories, and technical insights from HSD Steel Structure.
A mill test certificate can show that a batch of structural steel met specified chemical and mechanical requirements. But that certificate alone does not prove that the steel was actually…
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A transmission tower can look correct on individual fabrication drawings and still create serious problems when hundreds or thousands of members arrive at the erection site. A hole offset by…
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Choosing between a lattice tower and a steel monopole is not simply a question of which structure is stronger or cheaper. The decision affects right-of-way requirements, foundation design, transportation, erection…
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Hot dip galvanizing is one of the final protective processes applied to transmission tower members before packing and shipment. A problem discovered at this stage can affect corrosion protection, bolted…
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A missing brace, connection plate, bolt package, or tower member may represent only a small fraction of an overseas steel structure shipment. At the erection site, however, that single missing…
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A transmission tower may contain hundreds or thousands of individual angles, plates, bracing members, bolts, and connection components. Once those parts have been galvanized, many look similar. The challenge for…
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Choosing a transmission tower manufacturer is not simply a matter of comparing price per ton. For a utility or EPC contractor, the supplier must convert approved drawings and project specifications…
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A transmission tower RFQ can contain dozens of documents, but the basic quotation problem is simple: the supplier needs enough information to determine what structures are required, what loads they…
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Choosing between a gas-insulated substation (GIS) and an air-insulated substation (AIS) changes more than the switchgear package. It changes how much external steelwork is required, where structural interfaces occur, how…
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