QUINN%20TRUSS%20OPEN%20WEB%20JOIST%20SYSTEM

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QUINN TRUSSOPEN WEB JOIST SYSTEM
TECHNICAL DETAILS
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Finished beam depths
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Web dimensions
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PSD01 - L70 Hanger
Simpson L70 angles as specified by design
Simpson LBV hanger
Bottom member of posi beam to be notched over
bottom flange of hanger
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PSD02 - Bottom chord fixing to timber frame
47x97 Top chord restraint fixed between beams
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PSD03 - Top chord fixing to timber frame
47x97 Packing pieces
Ring beam (size to suit)
6 mm gap
47x47 Continuous plasterboard noggin
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PSD04 - Masonry hanger detail
47x97 Top chord restraint fixed between beams
Minimum bearing determined by design (choose
correct hanger for load, bearing width and
coursework level of hanger bearing flange).
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PSD05 - Masonry hanger detail(with continuous
ledger)
Continuous 47x97 ledger.Top chord of beam fixed
to ledger
Minimum bearing determined by design (choose
correct hanger for load, bearing width and
coursework level of bearing flange
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PSD06 - Bottom chord built into masonry
Blockwork to continue between beams to provide
restraint
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PSD07 - Top chord built into masonry
Continuous 47x97 ledger fixed to wall
Max 6mm gap
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PSD08 - Top chord fixing to steel
47x97 Noggins between top chords
Wallplate fixed to top of steel
Timber pack fixed to beam (size ti suit)
Max 6mm gap
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PSD09 - Internal bearing on bottom chord
47x97 top chord restraint fixed between beams
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PSD10 - Non load bearing partition parallel to
beams
Wall panels skew nailed through onto noggins with
a min of 2 no 3.35 dia galvanised wire nails
(length to suit).
Simpson Z35N clips
38x97 C16 (min) noggins at max 600mm centres
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PSD11 - Maximum duct sizes
INSERT LARGE SERVICES THROUGH JOISTS BEFORE
FIXING JOISTS. IT MAY NOT BE POSSIBLE AFTER
JOISTS HAVE BEEN FIXED DOWN.
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PSD12 - Edge closure detail
35mm Prefabricated edge closure pre faced with
plywood with 20mm lap at the top edge
Edge closure to be supplied to site as 4.8m long
lengths and cut on site as required
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PSD13 - Wide stair opening
Simpson L70 angles as specified by design
Simpson LBV hangers
Bottom member of posi to be notched over bottom
flange of hanger
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PSD14 - Narrow stair opening
Simpson L70 angles as specified by design
Simpson LBV hanger
Trimmer to be notched over bottom flange of hanger
Trimmer depth to be adjusted on site to suit
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PSD15 - Narrow stair opening
Simpson L70 angles as specified by design
Simpson LBV hanger
Trimmer to be notched over bottom flange of hanger
Trimmer depth to be adjusted on site to suit
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PSD16 - Narrow stair opening
Beam (depth to suit) Slotted through girders
Simpson L70 angles as specified by design
Packing piece to pick up ceiling
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PSD17 - Strongback Detail
Fix at a maximum of 4.0 metre centres
35x72 (min) blocks twice nailed to top and bottom
members and twice nailed to brace using 3.35x90mm
long galvanised wire nails
Position strongbacks either tight to the
underside of top chord (shown), or alternatively
tight to topside of bottom chord
INSTERT STRONGBACK THROUGH JOISTS BEFORE FIXING
JOISTS. IT CANNOT BE INSTALLED AFTER JOISTS HAVE
BEEN FIXED DOWN
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PSD18 - Strongback Detail
(with built in verticals)
Fix at a maximum of 4.0 metre centres
Position strongbacks either tight to the
underside of top chord (shown), or alternatively
tight to topside of bottom chord
INSTERT STRONGBACK THROUGH JOISTS BEFORE FIXING
JOISTS. IT CANNOT BE INSTALLED AFTER JOISTS HAVE
BEEN FIXED DOWN
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PSD19 - Strongback Bridging
Bridging joists to overlap by at least 1 joist
spacing and not less than 600mm
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PSD20 - Strongback Splice
Splice plate to be same section size as strongback
Timber splice plate fixed to strongback with 10
nails each side of splice.
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PSD21 - Horizontal restraint detail
35x97 timber twice nailed to bottom chord of
each joist
Strap to be fixed with a minimum of four fixings
of which one is to be over the third joist