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We are developing noise-attenuated panels with 16 ga, G90 galvd, sheet steel skins that will become sound proof envelops for power generating equipment. They can expect to be in service 30 years, and be used in any U.S. location. At some future time we cannot control, the owners may field...

Sand blasting profiles the metal surface making more area to coat and valleys to be filled (be sure the blasting you use is making a good profile). The result is thicker galvanizing, and thickness is what matters in terms of corrosion resistance. But talk first to your local galvanizer--you...

Fair comment except we are building architectural devices out of 16 ga galvanized sheet steel -- not an aircraft material. Aluminum skins are less of a problem. Soft aluminum rivets make better weather seals than do tougher material. There is no bimetal action aluminum to aluminum. Aircraft...

We are building sound insulated panels from commercial quality 16 ga G90 galvanized sheet steel formed into panels. The design requires a spine beam made continuous with the panel skin. Our preferred method is pop riveting. Does anyone know a rivet system that is: - weather and leak tight on...

We are building sound insulated panels from commercial quality 16 ga G90 galvanized sheet steel formed into panels. The design requires a spine beam made continuous with the panel skin. Our preferred method is pop riveting. Does anyone know a rivet system that is: - weather and leak tight on...

Thanks for your advice. I too am thinking welding won't work here. However, any such rivets would be used on a flat surface exposed to weather for a number of years. This is quite demanding for a rivet. Does anyone know of one compatable with galvanized steel with a reliable shear value that...

Thanks for your advice. I too am thinking welding won't work here, and we should consider rivets. However, these rivets will be used on a flat surface exposed to weather for a number of years. This is quite demanding for a rivet. Does anyone know of one compatable with galvanized steel with...

We build sound attenuation systems and structures for power generation projects. Currently, we are looking into insulated panels made from 16 gauge, G90 galvanized, commercial quality sheet steel in 60 inch wide strips. Here is our problem. The panels are too wide to be unsupported. We could...

We build sound attenuation systems and structures for power generation projects. Currently, we are looking into insulated panels made from 16 gauge, G90 galvanized, commercial quality sheet steel in 60 inch wide strips. Here is our problem. The panels are too wide to be unsupported. We could...

Perhaps I should explain myself more clearly. Your comment about ungalvanized steel may not apply here. In fact, steel is commonly used without protection (e.g. rebar, embedded plates) in direct contact with concrete, and is fine unless some outside agent (e.g. road salt on bridge decks) kills...

Currently, we are having our fabricators mask the underside of baseplates before galvanizing our columns in order to prevent any reaction between the zinc and the grout. Since we erect quite a number of columns, this is an expensive approach. Can anyone advise: - is it advisable/compulsory...

We need to secure a flange made from 6061 Aluminum angle with 1/2 dia Grade 316 stainless steel bolts. The flange offers a flat surface exposed to weather with a 30 year service life in a mildly corrosive industrial environment. The nut and washer face into the weather. Can anyone advise us...

We need to connect the skirtings for 30" bus ducts to the wall of the isophase box. Details as follows: Wall is 1/2" thick in 6061 aluminum. Bolt groups are 24 - 3/8" dia on 18" radius. Design load achieved 20 times in life. At other times, nominal loading only but box...

We need to connect the skirtings for 30" bus ducts to the wall of the isophase box. Details as follows: Wall is 1/2" thick in 6061 aluminum. Bolt groups are 24 - 3/8" dia on 18" radius. Design loading achieved 20 times in life. At other times, nominal loading only but...

We build sound proof enclosures for power generation. Our insulation system includes a vapour barrier. Our current choice carries a decent fire rating, but still performed badly in an actual fire. Since this additional precaution seems to have bought us little, we are considering substituting...

We build sound proof enclosures for power generation. Our insulation system includes a vapour barrier. Our present choice has a decent fire rating, but still performed badly in an actual fire. Since this additional precaution seems to have bought us little, we are considering substituting 6...

We build sound proof enclosures for power generation. Our insulation includes a vapour barrier. Our present choice carries a good fire rating, but still preformed badly in an actual fire. Since this additional precaution seems to have bought us little, we are considering substituting 6 mil...