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Report Ben Bridge Jeweler Washington Square Mall Soffit Framing Design tOP2cU 67z3n� City of Tigard A• . ove• Plans gyiT Date3Ifl(6_ t' levk- t-t-6A? REVISION OFFICE_COPY SPECIAL INSPECTION REQUIRED State of Oregon Structural Specially Code ❑ Concrete and Reinforcing Steel Its Installed in Concrete ❑ Special Moment-Resisting Concrete Frame ❑ Reinforcing Steel&Prestressing Steel Tendons ❑ Structural Welding ❑ High-Strenght Bolting ❑ Structural Masonry ❑ Reinforced Gypsum Concrete ❑ Insulating Concrete Fill ❑ Spray Applied Fire-Resistive Materials ❑ Pilings,Drilled Piers and Caissons ❑ Shotcrete ❑ Special Grading Exc.:-.: `. r. and Filling ❑ Smoke-conrro; , ❑ Other iIispectionL Soffit Framing Design Ben Bridge Jeweler Washington Square Mall 9585 SW Washington Square Road Space H05 Portland, Oregon 97223 Prepared By: George Snegirev B&I Construction P.O. Box 1182 Molalla, OR 97038 PROfj �' tedINab' O w 4 55530 "� ` Shrrov E• 10, r351-(4' EXPIRES 6-30-2016 March 8th, 2016 1 Table of Contents • PROJECT DESCRIPTION 3 DESIGN CRITERIA 3 DESIGN AND ANALYSIS 3 OUTPUT OF DESIGN AND ANALYSIS 3 APPENDIX A 4 SOFFIT FRAMING DETAIL 4 APPENDIX B 5 TECHNICAL DOCUMENT 5 2 PROJECT DESCRIPTION This project is a remodel of an existing Retail Facility located at Washington Square Mall in Portland, Oregon. The remodel consists of some demolition of the existing ceiling and replacing it with ceilings of differing elevations, hence the requirement of the soffit framing at the boundaries of the different elevations. The following design and analysis is for the soffit framing required for the remodel to the existing facility. This remodel will create 3 separate areas that are of different elevation than the remainder of the ceiling. This framing that separates these areas will be supported by 12-gauge, galvanized, soft-annealed steel wire conforming to ASTM A641. The framing consists of light gauge cold formed steel members. The 12 gauge wire only supports the light gauge steel framing. The suspended ceiling grid system is it's own independent system. DESIGN CRITERIA The Design Criteria is as follows as it pertains for the soffit framing design of the remodel: Applicable Codes: 2014 OSSC, ASCE 7-10, 2012 IBC Design Loads: Dead Loads: Light gauge steel soffit framing 3.1 plf. DESIGN ANDANALYSIS The Design and Analysis of the soffit framing has been based on a technical document for Seismic Technical Guide for Hanger Wire Attachment. This document provides performance data for the 12- gauge wire and recommendations for connections to structures. A copy of the document has been included in the appendices. OUTPUT OF DESIGN AND ANALYSIS A detail of the soffit framing as well as a copy of the technical document has been included in the Appendices. 3 APPENDIX A SOFFIT FRAMING DETAIL 4 12-GAUGE, GALVANIZED, SOFT-ANNEALED STEEL WIRE CONFORMING TO ASTM A641 CONNECTED AT THE BOTTOM TO HORIZONTAL 362S162-54 AT 4' O.C. AND CONNECTED AT THE TOP TO BOTTOM CHORD OF EXISTING TRUSS OR UNISTRUT SPANNING BETWEEN TRUSSES f-- BOTTOM OF CEILING a HORIZONTAL 362S162-54 SUSPENDED CEILING GRID FIXED TO 362S137-33 SYSTEM WITH 2 #10 SCREWS AT EACH STUD VERTICAL 362S137-33 AT 16" O.C. HORIZONTAL 362S137-33 - FIXED TO VERTICAL 362S137-33 WITH 4 #10 SCREWS 0 BOTTOM OF SOFFIT I. 0 0 a A SUSPENDED CEILING GRID 362T150-43 CONTINOUS TRACK FIXED TO 362S137-33 WITH #10 1/ x 1 X 43 SCREWS EACH FLANGE. MIL CONTINOUS CLIP SYSTEM ANGLE FIXED TO 362S137-33 WITH # 10 SCREWS EACH FLANGE SOFFIT FRAMING DETAIL • Technical Seismic Technical Guide Hanger Wire Attachment Code Requirements' The International Building Code (IBC) defines the requirement for hanger wire and their supports and attachment methods. However,there are exceptions and the application of hanger wires in a seismic design category can meet code requirements in different ways. USG"recommends that the design team,consulting engineers and code officials work together to analyze these factors and determine the appropriate construction and application of hanger wire attachment.Because codes continue to evolve,check with local officials prior to designing and installing a suspension system. Guidelines — 12-gauge,galvanized,soft-annealed steel wire — Manufactured in accordance with ASTM A641 — Meets or Exceeds Federal Specification QQ-W-461 H Note:12-gauge hanger wire produced by USG meets these requirements. Performance Data 12-Gauge Wire Wire Tie Failure/Pullout Load Typical 3 wrap tier 270 lbs. Tight 3 wrap tie 358 lbs. Yields i 424 lbs. Ultimate load j+550 lbs. Tensile Strength(Ksi) j 80 max, Per ASTM C636 Note:Tight wrap typically consists of three complete wraps within 1 in.Some jurisdictions may require tour complete wraps for bracing wires.These requirements may vary by jurisdiction. Splice Options Hanger wire splices are typical when the ceiling drop is greater than the length of the wire available and are allowed in seismic ceiling construction.The industry standard is to loop and tie the wire ends with three tight turns,or use a square knot.The square knot is the stronger of the two options at 550 lbs.versus 350 lbs. for the loop and tie option. 12-Gauge Wire Splice 1Wire Tie Failure Loop and Tie 1350 lbs. Square Knot 550 lbs. Note:Accessories by others for securing hanger wire splices should he evaluated for pullout and strength. See last page for Seismic Code Reference Standards Application Hanger Vi%ire Splices Loop and Tie Application Step 1 Connect the hanger wire ends together through two loops. Step 2 Wrap the hanger wire ends securely around itself with three complete turns within 1 in. Square Knot Application Step 1 Create an approximate 5 in.bend in the end of each hanger wire Step 2 With the short ends opposed,bring the right-hand _ end over the left hand and loop the short end under and around the left hand end,as shown. Step 3 Loop the left-hand short end back up and around the right-hand loop,with the left-hand —_ f end over the right hand end and bring the ' left-hand end under the loop of the right-hand end,as shown. Step 4 Draw the knot tight. Step 5 Wrap the hanger wire ends securely around itself with three complete turns within 1 in. irlea Note:In the symmetry of the knot,the wire piece on the left emerges parallel from below the other loop,while the wire piece on the right emerges parallel from above the other loop.This appearance confirms you have tied the square knot correctly. 2 Hanger'Niro Attachment • Application Attachment to Tee Insert the hanger wire ends through a wire hole in the tee and wrap the wire end securely around itself with three complete turns within 3 in.Ensure the remaining wire end is secured so that it does not interfere with the place- ment of ceiling panels, USG Dortft'main tees are produced with round hanger wire holes in the tee web at regular intervals.There are also rectangular(convenience)holes located in the tee bulb at regular intervals.The typical location for the hanger and bracing(splay)wires is in the round holes,but the rectangular(convenience)holes may also be used when needed.We have load tested the rectangular(convenience)holes located in the tee bulb with 12 ga,hanger wire on a 450 angle.The failure load is in excess of 400 lbs.This far exceeds the 250 lb.minimum prescribed by the code for the connections of the bracing(splay)wires. Note:USG has qualified the use of the rectangular(convenience)holes located in the tee bulb through comparison testing by seismic shake-table analysis.In these tests the rectangular(convenience)holes located in the tee bulb were used for all hanger wire attachments to the tee. Round Hanger Wire Hole Attachment Rectangular(Convenience)Hole Attachment hanger wire banger wire I � I round hanger rectangular wire hole It convenience hole-� \Vr3 4 oa o Alternative Hanger Wire Spacing ASTM C635 addresses the load carrying capability of main tees,categorizing them as Light,Intermediate or Heavy Duty.This is also known as deflection criteria.The associated load ratings are: Light Duty Intermediate Duty Heavy Duty • 5 lbs./LF(7.4 kg/m) 112 lbs./LF (17.9 kg/m) 16 lbs./LF(23.8 kg/m) Hanger wires are typically spaced 4 ft.o.c.along the main tee.Reducing the hanger wire spacing on Intermediate Duty main tees from 4 ft.o.c.to 3 ft.o.c.can achieve Heavy Duty load carrying capacity values. 3 ft. 3ft. _ 3 ft. aft. 3 ft. 3 ft o.c, o.e. o.e. o.n. o.n. o.n. Lsuspended ceiling Lmain tee Notes: — Reducing the hanger wire spacing on Intermediate Duty main tees can achieve Heavy Duty load carrying capacity values but does not change the duty classification of the main tee. The performance of Donn suspension systems is based on the specific combination of superior components;and the design and installation methods shown.Components from other manufacturers were not evaluated,and their use or any mixed use is not recommended. —Many jurisdictions accept the installation of Intermediate Duty main tees with additional supports to achieve Heavy Duty load carrying capacity values,however,some jurisdictions will not accept this application.Check with a local official prior to designing and installing a suspended ceiling system. Hanger wire Attachment 3 Application A.nchorage • The International Building Code(IBC),through references to ASCE/SE/7Minimum Design Loads for Buildings and Other Structures,American Society of Civil Engineers/Structural Engineering Institute(ASCE/SEI),defines the requirements for component anchorage.The requirements are as follows:"Component attachments shall be bolted,welded,or otherwise positively fastened without consideration of frictional resistance produced by the effects of gravity.A continuous load path of sufficient strength and stiffness between the component and the supporting structure shall be provided.Local elements of the structure including connections shall be designed and constructed for the component forces where they control the design of the elements or their connections. Anchors in Concrete or Masonry Anchors in concrete shall be designed in accordance with Appendix D of ACI 318. Anchors in masonry shall be designed in accordance with ACI 530.Anchors shall be designed to be governed by the tensile or shear strength of a ductile steel element. Exception: Anchors shall be permitted to he designed so that the attachment that the anchor is connecting to the structure undergoes ductile yielding at a load level corresponding to anchor forces not greater than their design strength, or the minimum design strength of the anchors shall be at least 2.5 times the factored forces transmitted by the component. Post-installed Anchors Post-installed anchors in concrete shall be pre-qualified for seismic applications in accordance with ACI 355.2 in Concrete and Masonry or other approved qualification procedures.Post-installed anchors in masonry shall be pre-qualified for seismic applications in accordance with approved qualification procedures. Multiple Attachments Determination of force distribution of multiple attachments at one location shall take into account the stiffness and ductility of the component,component supports,attachments,and structure and the ability to redistribute loads to other attachments in the group.Designs of anchorage in concrete in accordance with Appendix D of ACI 318 shall be considered to satisfy this requirement. 11 4 Hanger Wire Attachment Application Anchorage • •{ Power Actuated Fasteners Power actuated fasteners in concrete or steel shall not be used for sustained tension loads exceeding 100 lb (445 N)or for brace applications in Seismic Design Categories D,E.or F unless approved for seismic loading. Power actuated fasteners in steel are permitted in Seismic Design Category D,E or F if the gravity tension load on any fastener does not exceed 250 lbs(1123 N)unless approved for seismic loading.Power actuated fasteners in masonry are not permitted unless approved for seismic loading. Exception: Power actuated fasteners in concrete used for support of acoustical tile or lay-in panel suspended ceiling applications and distributed systems where the service load on any individual fastener does not exceed 90 lb(400 N).Power actuated fasteners in steel where the service load on any individual fastener does not exceed 250 lb(1,112 N). Power Actuated Fasteners for Acoustical Tile or Lay-In Panel Suspended Ceiling Applications Seismic Design Category D,E or F Concrete Steel ......................__....................................._.....................__..:..Stee_......_..........._.._....._............._........__........_.. Allowed for sustained tension loads exceeding 90 lb(400 N) Allowed where gravity tension load on any fastener does not exceed 250 lbs(1123 N) Note:The load for suspension system hanger wires will not exceed 64 lbs.based on hanger wires spaced 4 ft.o.c.along heavy !, duty main tees designed to carry 16 lbs/l.f.Also ASCE7-10 contains an exception allowing power actuated fasteners for support of acoustical tile or lay-in panel suspended ceiling applications.ASCE7-02 arid ASCE7-05 does riot contain this exception.Please check with the authority having jurisdiction as interpretation arid enforcement of this may vary. Friction Clips Friction clips in Seismic Design Categories D,E or F shall not he used for supporting sustained loads in addition to resisting seismic forces.C-type beam and large flange clamps are permitted for hangers provided they are equipped with restraining straps equivalent to those specified in NFPA 13 Section 9.3,7. Lock nuts or equivalent shall be provided to prevent loosening of threaded connections. Hamer Wire Attachment 5 • Construction Attachment to Structure Wood Vertical 1 Splay ' Wood Joist • of Rafter •• • • • • • • • 3"max. •• I • • • 'in"diameter closed eye screw with full thread • • • embedment(11/4"ruin.) • wood joist • • • 12 ga.hanger wire •• • 3'x iia"diameter closed •• • • • eye screw with 1 •"min n 12 pa.hanger • • penetration into wood •�7 re min.3 turns • 12 ga.hanger wire •• • • • • • • • • • • • (3)11/2"x 9 ga.staples or (3)11/2"a 9 ga staples or •• (3)stronghold"J"nails at (3)stronghold"3"nails at • each wire loop each wire loop • • • 3 • • • �� • • I.1.111illi •_�• ..►:�1"rain. • 1"min. sir • wood joist • wood joist 12 pa.hanger wire 12 ga.hanger wire • • • • • • • • Wood Truss • • • • • • • • • web member web member • • //• • bottom chord/• • bottom chord / • • 12 ga.hanger wire saddle tie saddle tie 12 ga.hanger wire • • • • Note:Hanger or bracing wire anchors to the structure should be installed in such a mariner that the direction of the anchor aligns as closely as possible with the direction of the wire. 6 Hanger Wire Attachment Construction Attachment to Structure Wood Vertical Splay Bottom of saddle tie required for all Wood Joist widths greater than"Wo Vz" r _ l Note: saddle tie has double loop at support 12 ga.hanger,vire rain.3 turns Not Applicable /d'diameter drilled hole typical saddle tie with double loop at support Il 2"rnin. hanger wire Wood I-Joist ;cod I lout wood 1-joist :1I4404044 12 ga.hanger wire L add 2 l/:r"x 20 ga.stud"w/ 12 ga.hanger vrire add 21/z"x 20 ga.stud"w/ min.3 turns - (1)#10 x 1"wood screw to min.3 turns (1)#10 x 1"wood screw to each of 3 joists.place stud flat each of 3 joists.place stud flat and within 6"of splay wire. and within 6"of splay wire. alternate' 'alternate: 2 x 4 tlat with 1-10c1 or 1-#10 x 3" 2 x 4 flat with 1-t Od ori-#10 x 3" screw to each of 3 truss bottom flanges screw to each of 3 truss bottom flanges Wood I-Joist Bottom Flange Note:Do not insert screw eyes parallel to laminations diameter closed • lir"diameter closed ye crew with eve screw with 11/4" -1M1 11/3"min.penebation min.penetration at bottom flange align with brace wire 2!ta.hanger wire min.3 turns 12 ga hangermaria rnin. .turns 1" win. Note:Hanger or bracing wire anchors to the structure should he installed in such a manner that the direction of the anchor aligns as closely as possible with the direction of the wire. Hanger Wire Attachment 7 Construction Attachment to Structure Concrete Vertical I Splay Clip I /+.e"drill-in expansion anchor Attachment U lie"drill-in expansion anchor � minimum or approved fastener a e r . Minimum or approved fastener r 1 ''- it iI o I I } ::t1 ate 45xtructural concreteIl strap 1"wide x 2"long x 12 ga.min. 3 turns 3 turns I 12 ga.hanger wire 12 ga.hanger wire I . 5/r drill-in expansion anchor �lw' drill-in expansion anchor l minimum or approved shot pins a P ISI •a minimum or approved shot pins J a a 4 -4 o p o 0 p ..--" —\, ! structural concrete 45'max. 12 ga.metal angle structural concrete I steel strap 1"wide x 2"long x 12 pa.min. 3 turns 1 • 3 turns 11 i 12 ga.hanger wire 12 ga.hanger wire I — I Cast In Place Concrete 1 wire pigtail WI 2"dia.loop&4"tail 1 p structural concrete 45'max.' wire pigtail wi 2"dia. loop&4"tail 12 ga.hanger wire > i structural concrete 12 ga.hanger wire wire pigtail w/2"dia.loop&4"tail P structural concrete 12 ga.hanger wire 4'7 man. Note:Hanger or bracing wire anchors to the structure should he installed in such a manner that the direction of the anchor aligns as closely as possible with the l direction of the wire. 8 Hanger Wire Attachment r Const uction • • • • Attachment to Structure Steel Vertical Splay Open-Web ' top chord Steel Joist • web member I • 12 ga.hanger wire (wrap and tie around tops of web members) bottom chord IN 12 ga.hanger typical saddle tie top chord wire min.3 turns Attach hanger wire to bottom chord only 12 ga.hanger wire when designed to carry the vertical load of (wrap and tie around the suspended ceiling system. tops of web members) Steel Roof Deck 2#8 x 1%2" #3 x 12"rebar self tapping screws • 20 ga.min.deck hanger wire tie to#3 20 ga.min.deck rebar with three wraps ` steel strap 3"wide around rebar and one x 4"long a 12 ga.minimum wrap around wire 12 ga.hanger mire min.3 turns Steel Deck With #3 rebar a length Insulation Fill required to cover min. of 4 high corrugations non-structural concrete fill Nair. Not Applicable steel deck 12 ga.hanger wire min.3 turns Steel Beam v a 1 0 I I structural concrete-I structural concrete .—structural steel structural steel rte- 12ga.metal angler_ 12 ga.metal angle • 12 ga.splayed • seisrm bracing wire 1.1 12 ga.hanger wire Note:Hanger or bracing wire anchors to the structure should be installed in such a manner that the direction of the anchor aligns as closely as possible with the direction of the wire. Hanger Wire Attachment 9 Construction Attachment to Structure • • Steel ••• Vertical Splay • Steel Deck With j structural concrete fill • Concrete Fill • • shot-in or expansion steel deck • anchor with eye holt ••• 12 ga.hanger wire • • ain.3 turns • • • • • • {structural concrete fill structural concrete fill • 1 steel deck I steel deck � '(min.)drill-in 12 f 3 hanger wire 12 ga.hanger,vire expansion anchor.steel . g embedded in concrete P. min.3 buns • strap 12 ga.x 1"wide rain, • • structural concrete fill • • • • • • • • shot in anchor'/a"min.metal steel deck •• • 11 angle 12 ga.x ia"wide rain. 12 ga.hanger wire min.3 turns • • • Note:Hanger or bracing wire anchors to the structure should be installed in such a manner that the direction of the anchor aligns as closely as possible with the direction of the wire. • • • • • • • • • • • • • • • • • • 10 Hanger WireAttachment Testing and Inspection Post-installed anchors shall be tested when deemed necessary by the authority having jurisdiction.Testing shall be performed by an accepted testing facility,unless approval of an alternative is obtained in advance from the engineer of record(EOR)for the project.If any anchor fails testing,test all anchors of the same type,not previously tested until twenty(20)consecutive anchors pass,then resume the initial test frequency.The anchors tested shall he only those anchors installed by the same trade.The authority having jurisdiction shall define acceptance/failure criteria.The test values and all appropriate criteria shall he shown on the contract documents. The test load maybe applied by any method that will effectively measure the tension in the anchor,such as direct pull with a hydraulic jack,calibrated spring loaded devices,or a calibrated torque wrench except that displacement-controlled anchors such as drop-ins shall not be tested using a torque wrench. When field testing of component anchorage is required by the authority having jurisdiction,the following criteria shall apply unless otherwise specified: Anchor Type Test Value Percent Tested Support(Vertical) 200 lbs.in tension 10% Bracing(Splay) 440 lbs.in tension 50% Note:Drilled-in 01 shot-in anchors typically require special approval prior to use in pre-stressed concrete. Note:Shot-in anchors in concrete are not permitted for bracing wires. Hanger Wire Attachment 11 Installation Guidelines for Suspended Ceilings i International Building Code (IBC) 2003 IBC 2006 IBC 2009 IBC 2012 IBC Auk i i Apo- American American Society of Civil Engineers(ASCE) ASCE7-02 ASCE7-05 ASCE7-05 ASCE7-10 Auk i i i Ceilings Interior Systems Construction CISCA Zones 0-2 CISCA Zones 0-2 CISCA Zones 0-2 ASTM E580 Association(CISCA) CISCA Zones 3-4 CISCA Zones 3-4 CISCA Zones 3-4 or ASTM International(ASTM) International Building Code(IBC)defines Seismic Design Categories A,B,C,D,E,and F. N/.iccsafe.orq 1 ASCE/SEI 7 Minimum Design Loads for Buildings and Other Structures American Society of Civil Engineers/Structural Engineer Institute(ASCE/SEI) www.asce.org Guidelines for Seismic Restraint for Direct-hung Suspended Ceiling Assemblies(Zones 3-4) , Recommendations for Direct-hung Acoustical Tile and Lay-in Panel Ceilings(Zones 0-2) i CISCA Ceilings&Interior Systems Construction Association(CISCA) ww.cisca.org , ASTM Internationl E580/E580M Standard Practice for Installation of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Subject to Earthquate Ground Motions. ASTM International(formerly American Society for Testing and Materials) www.astm.org Further References USG Seismic Ceiling Resource Center Seismic Technical Guides seismicceilin s.com Product Information Purpose L.A.Research Report Safety First! See usg.com for the most up-to- This seismic technical guide Compliance Follow good safety/industrial date product information. (STG)is intended as a resource DONN brand suspension systems hygiene practices during for design professionals,to manufactured by USG Interiors, installation.Wear appropriate Installation promote more uniform criteria Inc.,have been reviewed and personal protective equipment. I Must be installed in compliance for plan review and jobsite are approved by listing in the Read MSDS and literature with ASTM C636,ASTM E580. inspection of projects.This following L.A.Research Report before specification and CISCA,and standard industry ST 0 indicates an accept- number:25764. installation. practices. able method for achieving compliance with applicable Notice Code Compliance odes and regulations,although We shall not be liable for The information presented other methods proposed by incidental and consequential is correct to the best of our design professionals maybe damages,directly or indirectly knowledge at the date of onsidered and adopted. • sustained,nor for any loss issuance.Because codes caused by application of these continue to evolve,check ICC Evaluation Service,Inc., goods not in accordance with I with a local official prior to Report Compliance current printed instructions or designing and installing a ceiling Suspension systems for other than the intended use. system.Other restrictions and manufactured by IISO Interiors, Our liability is expressly limited to exemptions may apply.This Inc.,have been reviewed and replacement of defective goods. is only intended as a quick are approved by listing in Any claim shall be deemed reference. ICC-ES Evaluation Report 1222. waived unless made in writing Evaluation Reports are subject to us'within thirty 130)days from to reexamination,revision and date it was or reasonably should • possible cancellation.Please have been discovered. refer to usgdesignstudio.com or usg.com for current reports. USG__.... __ Manufactured h' 7 arm --_. _....... The following are tra ema k d USG SC2522 r 12-13 C tel cry I' r>nicc IIIn3 inn i I Mels,n c [1rva c nnpnv- 2013.01-2G I tenors.LLC west Atl:vs street < <utahlece l mqs corn D JN UOG USG in stylized letters Printed in U CA. Chicago.,_00661 l.vgne„igastudOcam