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Topic: Joist

	Special Vertical & Lateral Load Considerations for Steel Joists & Joist - An Online Course for Engineers and Architects
		Joist manufacturers recommend that the most economical option (from a material quantity point of view) for the support of concentrated or non-uniform loads is to designate the use of special joists through the use of specific load diagrams.
		Joist manufacturers indicate that for these type of hanger loads, the use of uniform loads to account for the actual loadings has proved to be reasonable and economical.
		Joist manufacturers recommend that for eccentrically loaded joist girders or beams, the joist spacing be staggered on each side of the girder by at least 6" to allow for the bearing seats of the joists to extend past the center line of the girder.
	www.pdhcenter.com /courses/s116/s116.htm (1796 words)

	* Joist hanger - (Home): Definition (Site not responding. Last check: 2007-10-08)
		Joist hangers are metal fasteners used to support the joist where it connects with the beam or perimeter joist.
		Joists are attached to the house with joist hangers and/or supported by a ledger board.
		Joists are placed on 16" or 24" centers, and attached to the beams and ribbon joist...
	www.bestknows.com /home/joist_hanger.html (673 words)

	Open web steel joists. - 1926.757
		Where steel joists at or near columns span more than 60 feet (18.3 m), the joists shall be set in tandem with all bridging installed unless an alternative method of erection, which provides equivalent stability to the steel joist, is designed by a qualified person and is included in the site-specific erection plan.
		For joists over 60 feet, both ends of the joist shall be attached as specified in paragraph (b) of this section and the provisions of paragraph (d) of this section met before the hoisting cables are released.
		Employees shall not be allowed on steel joists where the span of the steel joist is equal to or greater than the span shown in Tables A and B except in accordance with § 1926.757(d).
	www.osha.gov /pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=12748 (1493 words)

	* Joist - (Home): Definition (Site not responding. Last check: 2007-10-08)
		Joist: One of a series of parallel beams, usually 2 inches in thickness, used to support floor and ceiling loads, and supported in turn by larger beams, girders, or bearing walls.
		If the joists are parallel to the run of the partition, the line of the top plate may or may not coincide with a joist,.
		Small wood or metal members that are inserted in a diagonal position between the floor joists at midspan to act both as tension and compression members for the purpose of bracing the joists a spreading the action of loads...
	www.bestknows.com /home/joist.html (2383 words)

	Installing Joist Hangers
		Joist hangers are metal connectors designed to solidly anchor the joists in floors, decks or ceilings to beams and other framing members throughout your home.
		Joist hangers are sold according to the size of joists or beams they fit and their load capacity.
		For the joist hanger to perform to its rated load capacity, fill all holes in the joist flanges with the nails specified by the hanger manufacturer.
	www.rd.com /familyhandyman/content/19216 (1165 words)

	Band Joist Insulation
		An uninsulated band joist can account for a significant portion of a home's heat loss, as the only thing separating inside from outside is two inches of wood and the siding material covering it.
		On the two sides where the floor joists are perpendicular to the band joist, cut the insulation material to a snug fit, and gently push it into place between the floor joists.
		On the sides where the floor joists are parallel to the band joist, cut longer pieces of insulation (sections of four feet or less are easiest to work with).
	www.energydepot.com /clecores41a/library/banjoist.asp (677 words)

	GLOSSARY OF JOIST AND STRUCTURAL TERMS (Site not responding. Last check: 2007-10-08)
		The out-to-out depth of the end bearing shoe or seat of a joist or joist girder which is the distance from the top of the top chord to the bottom of the bearing seat angle or plate.
		A steel plate at a column or wall inserted between the end of a bottom chord of a joist or joist girder to weld the bottom chord to or to restrain the bottom chord from lateral movement.
		A joist which is supported in a manner such that the vertical axes of the joist is not perpendicular with respect to the ground.
	www.hancockjoist.com /glossary.htm (12988 words)

	Reducing Floor Deflection By Joist Sistering
		This can mean a new joist of the same size and length is screwed or nailed firmly to the old joist, or it can be a smaller structural member.
		There is a fundamental problem with sistering joists: while a certain size of lumber may physically fit in beside the old joist, getting the new board into position usually poses serious problems, because of walls, ceilings, and floors that were added after the original joists were dropped in place.
		After using the bolts to sandwich the sisters between the stud and the old joist, we proceeded to permanently attach the sisters to the old joists.
	www.hammerzone.com /archives/framecarp/supplement/floor/joist1/sister.htm (1252 words)

	Building Homes or Extensions: Joist Hangers
		Anyhow, if you can crawl up underneath to where the joist is over the vent you might be able to slip a joist hanger under the joist and nail it to the rim joist.
		Joist nails need to be no longer than the thickness of the rim joist.
		Because they are shorter, the joist nails have special "barbs" on the sides so they hold better, and they are "fatter" to give you good shear qualities.
	en.allexperts.com /q/Building-Homes-Extensions-2333/Joist-Hangers.htm (568 words)

	BC Hydro - Power Smart at Home - Band Joist Insulation
		This band joist is usually the same size as the floor joists, and runs around the entire perimeter of the building.
		An uninsulated band joist can account for a significant portion of a building's heat loss, as the only thing separating inside from outside is 5 cm (2 inches) of wood and the siding material covering it.
		On the sides where the floor joists are parallel to the band joist, cut longer pieces of insulation (sections of 1.2 metres (four feet) or less are easiest to work with).
	www.bchydro.com /powersmart/elibrary/elibrary642.html (758 words)

	John W. Hancock, Jr., LLC dba New Millennium Building Systems (Site not responding. Last check: 2007-10-08)
		These joists are used to support floors and roofs in buildings such as schools, churches, hospitals, office buildings, banks, commercial and industrial buildings of all types.
		John W. Hancock, Jr., LLC is a member of the Steel Joist Institute and all joists and joist girders are designed and manufactured in accordance with the requirements of the Steel Joist Institute Standard Specifications and Load Tables.
		Note KCS Joists are also furnished by Hancock and are designed in accordance with the Standard Specifications for K-Series Joists and have the same Hancock standard details.
	www.hancockjoist.com (2426 words)

	New Products in Small Building Floor Systems
		Joists are usually made from a solid material, such as fir, but have more recently been manufactured from wood materials laminated and bonded together with glue.
		I-joists are used in a floor system in the same way as dimensional lumber joists have been.
		As with traditional wood joists the chords made of this type of wood have a tendency to shrink over time, although this may be less than the traditional joist, given the relative size of the chord.
	www.architecture.ca /ijrc/joistpaper (10821 words)

	I-Joist Glossary, APA Europe
		Blocks made from lumber or wood structural panels that are attached to the web of an I-Joist to develop the design capacities of the fasteners used in the web.
		Short length, full depth section of wood I-Joist or APA EWS Rim Board that are cut to fit between floor joists.
		A means of identifying an I-Joist by reference to its depth in inches followed by the letters PRI and a number which relates to the joist strength and stiffness e.g.
	www.apa-europe.org /Languages/English/Ijoists/glossary.php (555 words)

	Joist - Wikipedia, the free encyclopedia
		A joist, in architecture and engineering, is one of the supporting members that run from wall to wall, wall to beam or beam to beam, to support a ceiling, roof (or floor).
		It may be made of wood, steel or concrete.
		Typically a beam is bigger than a joist and thus is distinguished from a joist.
	en.wikipedia.org /wiki/Joist (119 words)

	JPL Enterprises - Joist Pocket Liner
		When I-joists are not properly seated in their hangers, a gap may be created between the bottom of the joist and the seat of the hanger.
		In addition to being very labor intensive, I-joists installed on top of a pony wall may not be perfectly level.
		Any time there is a difference in the elevation of floor joists, a gap will occur, allowing for movement between the subfloor and the I-joist.
	www.joistpocketliner.com /q_a.html (1002 words)

	The Evolution of Engineered Wood I-Joists - Publications - BM&WT - UMass Amherst
		I-joist designers use sections of strong fiber in the top and bottom flanges where the stress is maximum.
		I-joists are available in lengths up to 60 feet, so reaching across the house from sill-to-sill is not a problem.
		I-joists must be cut and then fastened into expensive metal hangers when they are flush-mounted against the face of beams.
	www.umass.edu /bmatwt/publications/articles/i_joist.html (4338 words)

	Structural engineering framing Joist design
		Joists are closely spaced beams, which are used to support the floor sheathing.
		Ceiling joist or floor joist spacing of 12" to 16" is usually provided while designing joists for residential structures.
		Based upon the nature and magnitude of the load on the joist, shape of the joist can be rectangular or I-section.
	www.framingdesign.com /structural_engineering_framing_joist.html (210 words)

	Welcome to LRC Products.com v.3.0 (Site not responding. Last check: 2007-10-08)
		I-Joists (PRI) are manufactured to specific dimensions commonly used in residential construction.
		Newly added to our I-Joist family is the APA PRI 20 Series I-Joist, available in 9-1/2", and 11-7/8" with a 1-5/8" flange width.
		The mark signifies that panel quality is subject to verification through APA audit– a procedure designed to assure manufacture in conformance with APA performance standards or the standard shown in the mark.
	www.lrcproducts.com /ijoist.html (186 words)

	I-Joist & LVL
		Truswood is a leading supplier of I-joist systems. I-joists are a building component that can easily be installed, saving time, therefore money. By shipping I-Joists in lengths of 2’ increments, jobsite cutting and waste is minimized.
		I-joists can typically span greater distances than traditional lumber, therefore fewer pieces are required, saving time and money in material cost and labor.
		I-joists are typically available in longer lengths allowing for multiple span installations, thereby accelerating the installation process and reducing the number of lap joints at load bearing walls or beams.
	www.truswood.com /ijoistlvl.htm (263 words)

	Radiant Heat from Radiant Floor Company - Floor Joist Installation
		If the length of your joist bays is such that your circuits naturally terminate on the side of the room opposite from where your supplies begin, than use this kind of header.
		Once the tubing has been threaded through the floor joists, aluminum heat diffusion plates are used to attach it to the bottom of the sub-floor.
		In all floor joist applications, a reflective barrier is required to direct the infrared heat spectrum up toward the radiant floor.
	www.radiantcompany.com /details/joists.shtml (4349 words)

	Steel Joist: Ten Situations to Avoid when Designing with Steel Joists
		With the advantages of steel joists, there are a few situations that the specifying professional and drafter of the structural contract drawings will want to avoid when designing with steel joists and joist girders.
		The typical K-series joist seat depth of 2-1/2 inches is not adequate once the roof slope is ½:12 or greater.
		If the drafter is not given other instructions, a minimum joist size may be used even for very short spans, such as the 8K1 joists in the corner of the framing plan of Figure 3.
	www.steeljoist.org /ten (1158 words)

	[No title]
		This caused the joist to collapse and fall 40 feet to the ground.
		Joist manufacturers require that the ends of joists be tack welded or bolted immediately after placement.
		This welding or bolting only serves to hold the joist in place until the bridging is installed, and as a result the joist has very little lateral stability.
	www.lni.wa.gov /Safety/Basics/HazAlerts/steeljoists0301.asp (801 words)

	Insulating Rim Joist
		When a joist ends on the outside sill plate another board is used to cap off the end; thus creating a box with floor joists in the middle.
		To attach the insulation to your rim joists, use construction mastic or other adhesives formulated to use with foam.
		The standard practice is to come back after the house is framed and stick batt insulation between the floor joists and around the exterior joists to insulate the house.
	oikos.com /library/insulating_rim_joist (627 words)

	JPL Enterprises - Joist Pocket Liner
		The Joist Pocket Liner® is a high-density, polyethylene component used to form pockets (block outs) in foundation walls, so that the ends of each floor joist can be supported directly by the foundation wall.
		JPLs are made in different depths and widths, to accommodate various sizes of I-joists and dimensional wood joists.
		Joist Pocket Liners® are installed on the grade line of the foundation with two pre-installed nails.
	www.joistpocketliner.com /features.html (167 words)

	Under Joist Radiant Heating
		Joists The RetroHeat System is designed for use with typical wood and/or metal floor joists.
		The joists must have a facing width no greater than 2" with a spacing between the joist strips of 12", 16", or 24" on center.
		End of Joist Cavities Leave at least 6" of clearance at each end of each joist cavity to accommodate wiring and assembly.
	www.warmzone.com /under-joist-heating.asp (375 words)

	U-Type Joist Hangers for Wood I-Joist
		There are optional joist nails for a total uplift load of 720 lbs.
		SPECIAL: modified H hangers can be obtained with one flange turned inside, with both flanges in the same directions as the joist side, or with one flange bent and one flange unbent for asymmetrical designs.
		Consult the engineered wood I-joist manufacturer for web stiffener and backing block requirements, and recommended nailing schedule for each.
	www.tamlyn.com /index_files/UTypeJoistHangersforWoodIJoist.htm (224 words)

	APA Performance Rated I-Joists \| APA - The Engineered Wood Association
		APA Performance Rated I-joists (PRI) are "I"-shaped engineered wood structural members that offer strength, versatility and economy for use in residential and light commercial applications.
		I-joists are comprised of top and bottom flanges of various widths united with webs of various depths.
		I-joists can be manufactured using solid sawn lumber or structural composite lumber for the flange components, and plywood or oriented strand board for the web.
	www.apawood.org /level_b.cfm?content=prd_joi_main (307 words)

	Engineered I Joist Advantages
		The floor joists can be purchased in varying depths with different flanges on the top and bottom.
		The stiffness or load bearing capacity of a beam (steel or wood) is a function of the distance the beam spans, the type of material it is made from, and the depth or height of the beam.
		The new engineered floor joists can be purchased in a variety of depths that range from 10 inches to 16 inches.
	www.askthebuilder.com /B227_Engineered_I_Joist_Advantages.shtml (901 words)

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