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Includes publication guidance on welding after galvanizing, relevant welding symbols, and definitions of corrosion-protection classes (Class I, Class II, and Class IⅢ). Provides safety and venting requirements for seal weld pin holes, cautions about warpage, and factors affecting staining and bare spots, referencing AGA and ASTM/AWS standards.",{"@graph":69,"@context":121},[70,84,104],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/recommended-details-hot-dip-galvanized-structures/674956/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":98,"encodingFormat":97,"isAccessibleForFree":99,"interactionStatistic":100},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/recommended-details-hot-dip-galvanized-structures/674956.png","ImageObject",300,407,{"name":92,"@type":93},"Mia  ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-04",true,{"@type":101,"interactionType":102,"userInteractionCount":4},"InteractionCounter",{"@type":103},"ViewAction",{"@type":105,"mainEntity":106},"FAQPage",[107,113,117],{"name":108,"@type":109,"acceptedAnswer":110},"What types of structural connections and details are included in the recommended details?","Question",{"text":111,"@type":112},"The document lists specific connection and joint configurations such as framed beam connections, combination section types, gusseted connections, column bases, splice types, bracket plates, and box truss details.","Answer",{"name":114,"@type":109,"acceptedAnswer":115},"When is welding required after galvanizing?",{"text":116,"@type":112},"Some details call for welding after galvanizing, and the document directs readers to the AGA welding and hot-dip galvanizing publication for additional welding and touch-up information.",{"name":118,"@type":109,"acceptedAnswer":119},"What are the corrosion protection classes and how do they differ?",{"text":120,"@type":112},"Class I includes full seal welding or bolted parts after galvanizing and provides the highest corrosion protection at higher fabrication cost. Class II involves overlapping parts with seal welding and offers a very high degree of corrosion protection but not quite equal to Class I. Other non-seal-weld details are described as providing a degree of corrosion protection meeting or exceeding many industrial coatings.","https://schema.org",{"og:url":83,"og:type":123,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":125,"canonical":83},"index,follow",{"doc_id":127,"site_id":62},674956,1793771696,{"code":4,"msg":5,"data":130},{"doc_id":127,"user_id":131,"nickname":92,"user_avatar":132,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":133,"file_id":134,"file_url":135,"file_type":136,"file_size":137,"view_count":4,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":138,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":128,"read_time":26},687207024478,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","P            T   LM                  L haIPBAILVAMZEDSTULTnTQIPTIURE  \n52564A MANUALFDR STEEL DETAILER5,ENCINEERS &FABRICATDRS,CDNTAINING WORKINGDRAWINCS &DETAILS FDR HDT-DIPGALVANIZED STRUCTURES  \n26.57”  \nTABLE q CONTENTS  \n# RECOMMENDED DETAILS PorHOT-DIP GALVANIZED STRUCTURES\n\nDRAWING\\#TITLE1FRAMED BEAM CONNECTIONS2COMBINATION SECTION-FLANGE &CHANNEL3COMBINATION SECTION-TWO CHANNELS4COMBINATION SECTION-WIDE FLANGE &CHANNEL5COMBINATION SECTION-CHANNEL&ANGLE6COMBINATION SECTION-CHANNEL&ANGLE7GUSSETED CONNECTION-WELDED8GUSSETED CONNECTION-BOLTED9DOUBLE ANGLES10MOMENT SPLICE AT RIDGE (FIELD BOLTED)11SIMPLE COLUMN BASE(BASE PLATE SHOP WELDED)12SIMPLE COLUMN BASE(BASE PLATE FIELD WELDED)13MOMENT RESISTING COLUMN BASE(BASE PLATE FIELD WELDED)14MOMENT RESISTING COLUMN BASE(BASE PLATE SHOP WELDED)15WEB STIFFENER16COLUMN SPLICES-BOLTED17BUTT PLATE COUMN SPLICE-BOLTED18BUTT PLATE COUMN SPLICE-WELDED19BRACKET PLATE20BOX TRUSS  \n◎ 2012 American Galanizers Association.The material provided herein has been developed to provide accurate and auchoritatie information aboutafe-fabricationhot-dipgalvanized stel.This material provides generlinformation only and is no intended as a subtinute for competent profesionalexamination and verificationas to suitabiliy and aplicablity.The information provided hereinis no intended as a representation or waranty on the part of the AGA.Anyone making use of tisinformation assumes all liability arising from such use.  \n1.THE CONTENTS OF THIS PUBLICATION ARE THE RESULT OF A WIDESPREADSURVEY CONDUCTED AMONG AGA MEMBERS.SOME GALVANIZERS MAY PREFERDIFFERENT DETAILS,BASED UPON THEIR OWN EXPERIENCES,TO ACHIEVEDESIRED RESULTS IN THE GALVANIZED PRODUCT.  \n2.CERTAIN DETAILS CALL FOR WELDING AFTER GALVANIZING.MORE INFORMATIONCONCERNING WELDING AND SUBSEQUENT TOUCH-UP OF GALVANIZED STEELS AVAILABLE IN THE AMERICAN GALVANIZERS ASSOCIATION'S(AGA)WELDING&HOT-DIP GALVANIZING PUBLICATION.IF POSSIBLE,STEELWORK SHOULD BEDESIGNED TO BE BOLTED RATHER THAN WELDED AFTER GALVANIZING.  \n3.WELDING SYMBOLS ARE THOSE DEFINED IN AWS A2.4-2012 WELDING &HOT-DIP GALVANING PUBLICATION.SHOP WELDING SYMBOLS ARE USUALLYACCOMPANIED BY A NOTATION“INTERMITTENT”OR BY“CONT.”MEANINGCONTINUOUS.IN THE ABSENCE OF ANY OTHER NOTATION,IT IS ASSUMED THEWELD WILL BE CONTINUOUS(AWS A3.0-2010 INCLUDES STANDARD WELDINGTERMS AND DEFINITIONS.)  \n4.CLASSI  \nDETAILS ARE THOSE CONSISTING OF PARTS JOINED TOGETHER BY A FULLSEAL WELD,OR PARTS WHICH ARE BOLTED TOGETHER AFTER GALVANIZING.THIS CLASS REPRESENTS THE HIGHEST DEGREE OF CORROSION PROTECTIONATTAINABLE,BUT DOES REQUIRE MORE FABRICATION COST.  \n## 5.CLASS II\n\nDETAILS ARE THOSE CONSISTING OF OVERLAPPING PARTS JOINED TOGETHER BYSEAL WELDING AND WHICH HAVE AN OVERLAP AREALARGE ENOUGH TO NEEDVENTING IN ACCORDANCE WITH THE APPROPRIATE GUIDELINES OF NOTE 7.A VERYHIGH DEGREE OF CORROSION PROTECTION IS AVAILABLE WITH THESE DETAILS,ALTHOUGH NOT QUITE EQUAL TO CLASS I.MORE WORK IS REQUIRED THAN ISCUSTOMARY FOR NORMAL FABRICATION STANDARDS.IT SHOULD BE NOTEDCLASS II CAN BE UPGRADED TO CLASS I BY PLUGGING VENTS AFTER GALVANIZING.  \n## 6.CLASS IⅢ\n\nDETAILS DO NOT INCLUDE SEAL WELDING AND MAY REQUIRE ONLY SLIGHTLYMORE FABRICATION EFFORT THAN NORMALLY EMPLOYED ON A NON-GALVANIZEDSTRUCTURE.CLASSII DETAILS ENABLE THE GALVANIZING TO PROVIDE ADEGREE OF CORROSION PROTECTION THAT MEETS OR EXCEEDS THE PROTECTIONPROVIDED BY MOST INDUSTRIAL COATINGS TO IDENTICAL DETAILS.  \n7.PIN HOLES MAY EXIST IN SEAL WELDS AROUND OVERLAPS INCLASS I DETAILS.LIQUIDS FROM GALVANIZER’S CLEANING BATHSMAY PASS THROUGH THE PIN HOLE AND ENTER THE OVERLAP AREA,WHERE IT WILL REMAIN AS IT IS IMMERSED IN THE MOLTEN ZINC.POSSIBILITY OF EXPLOSION EXISTS AS THE TRAPPED LIQUID VAPORIZES ANDEXPANDS ATA TEMPERATURE OFAPPROXIMATELY850 F.DANGER OFEXPLOSIONIS MORE ACUTE FOR LARGER OVERLAPPED AREAS.IT IS RECOMMENDED THEFABRICATOR PROVIDE A VENT IN ONE OF THE OVERLAPPING PLATES ACCORDINGTO THE FOLLOWING GUIDELINES.LOCATION OF THE VENTS NEED NOT BE EXACT,PROVIDED THEY ARE I","cbCaitMrnnCC1vj8","https://ap.wps.com/l/cbCaitMrnnCC1vj8","pdf",7509946,24,"English","# Recommended Details - Hot-Dip Galvanized Structures\n## Table of Contents\n## Connections and Joint Details\n## Corrosion Protection Classes and Notes\n## Venting Requirements and Cautions","[{\"question\":\"What types of structural connections and details are included in the recommended details?\",\"answer\":\"The document lists specific connection and joint configurations such as framed beam connections, combination section types, gusseted connections, column bases, splice types, bracket plates, and box truss details.\"},{\"question\":\"When is welding required after galvanizing?\",\"answer\":\"Some details call for welding after galvanizing, and the document directs readers to the AGA welding and hot-dip galvanizing publication for additional welding and touch-up information.\"},{\"question\":\"What are the corrosion protection classes and how do they differ?\",\"answer\":\"Class I includes full seal welding or bolted parts after galvanizing and provides the highest corrosion protection at higher fabrication cost. Class II involves overlapping parts with seal welding and offers a very high degree of corrosion protection but not quite equal to Class I. Other non-seal-weld details are described as providing a degree of corrosion protection meeting or exceeding many industrial coatings.\"}]","Recommended Details - Hot-Dip Galvanized Structures | PDF"]