Introduction to Joist and Beam Hangers

you hello and welcome to Simpson strong ties introduction to joist and beam hangers after watching this video you will be familiar with the basic terms associated with hanger installation and you'll be able to identify the differences between typical face mount and top flange hanger installations you'll also learn how to install joist and beam hangers correctly and you'll be able to understand installation features of some of Simpson strong ties joist and beam hangers you will understand the differences between hanger designs and the differences between correct and incorrect hanger installations better if you're familiar with the following terms in the frame of a house a beam is horizontal to the ground a beam supports or carries another member such as a joist that is why a beam is also called a carrying member a beam can also be supported or carried by another member in which case it is called a carried member beams are also called headers when they sit above door and window openings a beam can be made of solid lumber one or more ply of to buy lumber or a variety of engineered wood products such as structural composite lumber abbreviated SCO Jois are similar to beams in some ways for example in the frame of a house joist or horizontal to the ground also like beams Joyce can be made of solid lumber one or more ply of to buy lumber or of a variety of engineered wood products such as wood hi Joyce Joyce which are supported by beams support floors or ceilings hey Joyce can rest on top of or be attached to the face of a header or beam that's why a joist is also called a carried wood member the dimensions of a joist are stated in terms of width height and length note with dimension is the height because it is important for correct hanger installation an IEEE joist is a joist with a section that looks like the capital letter I it consists of a top and bottom flange and a web in between the flanges can be made of either solid lumber or SCL the web is usually made of either OSB oriented strand board or plywood in some cases I joist may need web stiffeners or web fillers a hanger is a metal bracket that supports the joist or beam by connecting it to another supporting structural member while many hangers have the same basic design their shapes and sizes can vary a typical face mount hanger has two header flanges two side plates and a seat when installing many types of hangers fasteners are driven through holes in the header flanges into the caring member and through holes in the side plates and into the carry joist some hangers also have top flanges top flanges hold the hanger in place during installation which makes installation faster and easier the holes in a hanger are for fasteners such as nails bolts and SDS or tightened masonry screws when the right type and number of fasteners are installed in a hanger the hanger can support its allowable load an allowable load is a maximum load that can be supported by a connector that's installed correctly slope is the incline of a roof expressed as inches of rise over inches of run when you change the slope of something you change the angle in a vertical direction to skew something is to pivot it left or right around a connection point when you skew something you change the angle in a horizontal direction there are two basic types of hangers a top flange hanger and a face mount hanger each type has its advantages and disadvantages let me show you what I mean a typical top flange hanger needs fewer fasteners than a typical face mount hanger fewer fasteners mean faster installation this is an advantage of the top flange hanger the top flanges rest on top of a header this limits how far down on the face of the header you can position the hanger this is both an advantage and a disadvantage it's an advantage because you don't have to match the position of the hanger to the height of the joist this makes installation faster and easier but the top flanges are also a disadvantage because the position on the face of the header is determined by the top flanges the height of the hanger and the height of the joist have to match to ensure a flush floor or ceiling in contrast to a top flange hanger you can adjust the hanger position on a header when using a face mount hanger another disadvantage of the top flanges is that they may create bumps and a subfloor you are responsible for correctly installing the right hanger in the right places the designer of record is responsible for choosing which types of hangers to use and specifying where in the frame of the house you will install each hanger there may be times when you don't know which hanger to use if this happens it's important that you don't install a hanger just because it's the right size doing this can cause life safety issues if you don't know which hanger to use check the plan specification documents if they're not specific ask the designer engineer architect or specifier of record before you begin installing a hangar verify that you have correctly identified the following the joist size the hangar size the hangar type the hangar location the fastener type and the number of fasteners then make any necessary adjustments to the header or beam including adding web fillers and backer blocks or fastening multiple wood members together to act as a single unit the first few steps in the installation process are the same from any top flange and face mount hangars the first step is to measure and mark the intended location of the joist on the header so that you know where to install the hanger the second step is to position the hanger when joist hangers are correctly positioned a series of joists sit at a consistent height you position a top flange hanger differently than you position a face mount hanger because of the top flanges you don't have to measure the height of the joist when installing a top flange hanger you place the hangers so that the top flange is rest on top of the header you have to determine the height of the joist to correctly position the face mount hanger you can determine the joist height by using a small end cut of the joist or a wood block snapping a location line or measuring when you have a top flange hanger in position you are ready for step 3 install fasteners to the top flanges and into the top of the header step 4 for installing either a face mount or a top flange hanger is to install the header fasteners through the header flanges and into the face of the header the side plates of a correctly installed top flange or face mount hanger are parallel in other words there is the same distance between the side plates at the top and bottom of the hanger step 5 is to place a joist in the hanger there should be less than an eighth of an inch between the end of the joist and face of the header the final step step six is to install the joist fasteners through the side plates and into the joist if you're installing a hanger with a double sheer feature install nails specified for the hanger which can be 10 penny common sixteen penny sinker or sixteen penny common nails in an angle through the domes or tabs on the side plates the nails will go through the joist and back into the header beam hangers are typically heavy-duty connectors which may require the use of screws or bolts dislike with joist hangers there may be times when you don't know which beam hanger to use if this happens don't install a hanger just because it's the right size doing this can cause life safety issues to install a beam hanger follow the joist hanger installation process note however some important differences because of the thickness of the steel top flanges of a heavy gauge top flange hanger are curved at the bend and do not have a perfect square corner the curvature of the top flanges makes it difficult to get the hanger flush against both the top and the face of the header therefore you might have to round off the corner of the supporting member some being hangers require bolts before installing a bolt you must first mark the bolt location and drill a hole with a correct diameter all the way through the carrying and carried member be sure to use a washer on the wood side of the bolted connection following is a list of basic installation do's and don'ts that help you ensure that you install it the hangers correctly do make sure with top flange hangers that the hangers plumb to the header and not kicked out this means that the part of the hanger that sits against the header must be in contact with the header throughout the full height of the hanger if the hanger is kicked out push it back against the header until it's plumb and fill a triangular optional face holes to secure the hanger in position note that you cannot fix a kicked out hanger if the joist nails are installed do make sure the joist is fully seated in the hanger do make sure that the joist is not cut too short there should be less than an eighth of an inch between the end of the joist and the face of the beam or header do make sure all recommended or specified fasteners are installed before loading the joist to beam connection this means that you should fully install all the hangers on one story before starting construction on the story that will sit above it do make sure that a face mount hanger covers at least 60% of the height of the joist do make sure when you're installing a hanger for an eye juice that the hanger side plates reach and support the top flange of the eye joist if they don't you must install web fillers to prevent the eye choice from rotating do make sure with the eye choice you use web fillers when a hanger requires joists nails in the web area do fasten multiple members together so that they act as one member if you don't fasten the members together they don't act as one member this weakens the overall strength of any connection to the multiple wood members don't toenail joists to the beam or header before installing a hanger toe nailing can cause floor squeaks and incorrect hanger installation don't over spread the flanges of a hanger over spread flanges don't provide enough side support and can cause uneven surfaces and floor squeaks over spread flanges can cause a joist to roll over don't squeeze or pinch the top flange of an I joist too tightly with a hanger don't notch the joist beam or header to avoid subfloor bumps unless the engineer allows it notching the joist beam or header will reduce the allowable load values of the structure don't cut any part of the hanger don't use joists nails that are too long joy's nails should not penetrate all the way through the joist don't install a top flange hanger that has a bearing depth deeper than the width of the header don't use the wrong fasteners pay close attention to the gauge and length of nails required for different hangers don't use short joist hanger nails with double shear hangers don't leave fastener hoes unfilled unless they are the optional triangular nail holes cincin is very versatile LS su series hanger is used to attach sloped skewed or sloped and skew joist or rafters to ridge beams or headers whether sloped up or down skewed left or right or combination of both the LSS you can accommodate joist to beam connections of up to 45 degrees in any direction the large size hangers are LSU's and cannot be skewed on the jobsite and must be skewed at the factory but they can be sloped at the jobsite when using an LSS you with AI joist remember to first add web stiffeners to the I choice as required by the manufacturer an LS su series hanger has an acute flange and an OP two's flange when skewed it also has seat nails and a brown holds for skewed applications there's no need to cut a skewed angle for sloped rafters however you must first cut the joist to the desired slope after finishing any necessary preparations mark the joist or rafter location on the ridge beam or header then attach the hanger to the sloped or skewed end of the joist by first installing a seat nails which are 10 penny by inch and a half short joist hanger nails bend one flange to form the acute or inside angle desired and position the hangar and rafter assembly on the header using 10 penny common nails fill the oblong holes by hammering parallel to the joist using your hammer then the other flange back until it touches the ridge beam or header fill all a bran holes with ten penny common nails if you are using the LSS u hanger for the sloped rafters that are not skewed neither header flange should be bent both header flanges should be flush against the header faced with any connector that is designed to be field bent make sure that you bend it only once bending a steel back and forth can crack and weaken the steel this could cause failure here is a correctly installed LSS u series hanger s you are and sul hangers are designed for joist they need to be skewed at a 45 degree angle these hangers are identical except that the su r hanger is skewed to the right and the sul is skewed to the left the skew angle is preset and the joist does not need to be bevel cut for the skew angle to install follow the same procedure used with face mount hangers here is a correctly installed su r hanger the IUS series hanger is a unique hybrid hanger for I choice it is versatile like a face mount hanger but it's easier and quicker to install like a top flange hanger also it doesn't require joist nailing an iu s series hanger is like a face mount hanger but it has additional features that ease installation for example the iu s series hanger has set tabs on top a snap-in teardrop which replaces the need for joist nailing strong grips to hold the bottom chord in position and a starburst to secure the joist in the hanger seat an iu s series hanger also has funnel shaped flanges at the top to guide the joist into the hanger to install an IU s-series hanger you follow many of the installation procedures for the face mount hanger and drive 10 D common nails through the header flanges into the header the quantity of nails required varies by hanger size the installation is faster than that for a face mount hanger because the top set tabs hold the hanger on the header face at the right height and eliminate the need to measure and mark the hanger position note that when you place the joist in the hanger you must make sure it snaps into place pass the teardrops in the seats you may have to hammer the joist to ensure this don't try to pull the joist out of the hanger after it is snapped into place also make sure that the side plates reach the top flange of the eye choiced if additional uplift is required add web pillars and drive 10 penny by inch and a half nails to the triangular holes in the side plates here is a correctly installed IUS series hanger we cover a lot in a short video about joist and beam hangers now you are familiar with basic terms associated with hanger installation and can identify the differences between a typical face mount and top flange hanger installation you also know how to install joist and beam hangers correctly and can identify installation features of some of Simpson's strong ties joists and beam hangers I hope you enjoyed this video thank you for your attention you

Channel: Simpson Strong-Tie

Views: 377,621

Rating: 4.7371602 out of 5

Keywords: simpson, strong, tie, manufacturing, joist, beam, hangers, construction, wood framing, floor systems

Id: dOX9MIK9mwI

Length: 19min 35sec (1175 seconds)

Published: Thu Jul 14 2011