Session 1 Unit 4 Pre-Assessment 3
Report CopyRight/DMCA Form For : Seismic Ceiling Suspension Guide
Seismic Applications,Seismic Codes Development and Adoption. The Code Official is the Only Authority to Enforce Code Compliance. The International Building Code was established to set minimum requirements for life safety and preservation of. property It is important to know that while the building code establishes the requirements it is the code official that. has the power to enforce its provisions, The code official also has the latitude to allow materials and methods of construction that are not addressed. in the code In this case officials can perform their own analysis of the evidence presented or they can rely on. independent qualified sources such as International Code Council Evaluation Services ICC ES to do the analysis. and provide their findings, The resulting report is specific technical evidence on which the code official can base approval of a particular design. without delaying construction, Purpose of Installation Requirements for Suspended Ceilings. Suspension systems strong enough to resist lateral force imposed upon it without failing. Prevent border panels from falling from the ceiling plane. New Seismic Categories, According to the International Building Code a Seismic Design Category must be established for each construction. project based on,1 Anticipated ground motion,2 Type of soil in a specific geographic area. 3 Occupancy category, NOTE Seismic Design Categories are established by the building owner and engineer A SDC is a classification assigned to a. structure based on its occupancy or use and on the level of expected soil modified ground motion. Seismic Design Category SDC,SDC Significance,A Very small seismic vulnerability. B Low to moderate seismic vulnerability,C Moderate seismic vulnerability. D High seismic vulnerability, E F Very high seismic vulnerability and near a major fault. Chicago Metallic Suspension Systems are tested to ASTM E580 E580M Standard Practice. for Installation of Ceiling Suspension Systems for Acoustical Tile and Lay in Panels in Areas. Subject to Earthquake Ground Motions, This practice covers acoustical ceiling suspension systems and their additional requirements in buildings in IBC. Seismic Design Categories C D E and F The application of this practice is to be determined by local authorities. SDC C Installation Requirements,SDCs D E and F Installation Requirements. Connection Strength SDC C,Connection Strength SDCs D E and F. Referenced standard in ASCE 7 10 IBC 2012,Industry Standard Construction. IBC 2012 IBC 2012, SEISMIC DESIGN CATEGORY C SEISMIC DESIGN CATEGORIES D E and F. ASCE 7 10 Section 13 5 6 2 1 ASCE 7 10 Sections 13 5 6 13 5 6 2 and 13 5 6 2 2. ASTM C635 Intermediate or Heavy Duty Load Rating grid as defined by ASTM. Heavy Duty Load Rating as defined in ASTM C635 is required. Duty Rating C635, Grid Minimum main runner splices and cross runner intersections Minimum main runner splices and cross runner intersections. Connections strength of 60 lbs 27 2 kg strength of 180 lbs 81 6 kg. Vertical hanger wires must be a minimum No 12 gage Vertical hanger wire must be a minimum No 12 gage. Vertical hanger wires maximum 4 ft 1200 mm on center unless Vertical hanger wires maximum 4 ft 1200 mm on center unless. justified by calculations or test results other design approvals are listed by the manufacturer. For field tied connections vertical hanger wires must be sharply Vertical hanger wires must be straight and shall not use bends or. bent and wrapped with three turns in 3 in 75 mm or less localized kinks for leveling the system. All vertical hanger wires may not be more than 1 6 out of plumb For field tied connections vertical hanger wires must be sharply. without having additional wires counter splayed bent and wrapped with three turns in 3 in 75 mm or less. Vertical Wires may not attach to or bend around interfering equipment All vertical hanger wires may not be more than 1 6 out of plumb. Suspension Use trapezes to avoid such obstacles without having additional wires countersplayed. Wires A device used to secure the hanger wire to the structure above. must sustain a minimum load of 90 lbs 40 kg, Power actuated fasteners are now permitted to be used for loads. that do not exceed 90 lbs 40 kg in concrete and do not exceed. 250 lbs 110 kg in steel, Wires may not attach to or bend around interfering equipment Use. trapezes to avoid such obstacles, Ceilings less than or equal to 144 ft 2 13 4 m2 and surrounded. by walls connected to the structure above are exempt from these. requirements of this practice, Lateral force bracing is required for all ceilings greater than 1000 ft 2. Where required lateral force bracing splay wires or rigid bracing. and a compression post must be located within 2 in 50 mm of. main runner cross runner intersection and splayed approximately. 90 apart in the plan view at maximum 45 angle from the. Lateral horizontal and located 12 ft 3600 mm on center in both directions. Force Lateral force bracing is not permitted starting 6 ft 1800 mm from two adjacent walls. Bracing Lateral force bracing must be spaced a minimum of 6 in 150 mm. from unbraced horizontal piping or ductwork, Lateral force bracing connection strength must be a minimum of. 250 lbs 110 kg, Rigid bracing must be designed to limit deflection to less than 1 4. Unless rigid bracing is used or calculations have shown that lateral. deflection is less than 1 4 in 6 mm sprinkler heads and other. penetrations shall have a minimum of 1 in 25 mm clear space in. all directions,Note Chart references CISCA Seismic Handbook 2014. Industry Standard Construction,IBC 2012 IBC 2012, SEISMIC DESIGN CATEGORY C SEISMIC DESIGN CATEGORIES D E and F. Perimeter closure molding width must be a minimum of 7 8 in Perimeter closure molding width must be a minimum of 2 in 50. 22 mm mm Refer to Page 9, A minimum clearance of 3 8 in 9 5 mm must be maintained on Proprietary solutions using approved perimeter clips may utilize. all four sides Refer to Page 8 perimeter closures less than 2 in 50 mm Refer to Page 9. Grid ends on all four walls must be free to move The grid must be connected to the perimeter on two adjacent sides. When a closure angle with a supporting shelf less than 7 8 in 22 Refer to Page 9. mm is used perimeter runners must be supported by vertical A minimum clearance of 3 4 in 20 mm must be maintained on. hanger wires not more than 8 in 20 cm from the wall two unattached adjacent sides Refer to Page 9. Proprietary solutions may utilize approved attachment devices on Perimeter runners must be supported by vertical hanger wires not. some walls and varying closure widths more than 8 in 200 mm from the wall Refer to Page 10. Perimeter runner ends must be tied together to prevent spreading Unattached perimeter runner ends must be tied together to prevent. Refer to Page 8 spreading Refer to Page 9, Lighting fixtures must be positively attached to the grid by at least Lighting fixtures must be positively attached to the grid by at. two connections each capable of supporting the weight of the least two connections each capable of supporting the weight of. lighting fixture National Electrical Code the lighting fixture. Surface mounted lighting fixtures shall be positively clamped to Surface mounted lighting fixtures shall be positively clamped to the. the grid grid, Clamping devices for surface mounted lighting fixtures shall have Clamping devices for surface mounted lighting fixtures shall have. safety wires to the suspension system or the structure above safety wires to the grid or the structure above. Lighting fixtures and attachments weighing 10 lbs 4 5 kg or less When cross runners with a load carrying capacity of less than. e g canister light fixtures require one No 12 gage minimum 16 lbs ft 24 kg m are used supplementary hanger wires are. hanger wire connected from the housing to the structure above This required. wire may be slack, Lighting fixtures and attachments weighing 10 lbs 4 5 kg or less. Lighting fixtures weighing greater than 10 lbs 4 5 kg but less than require one No 12 gage minimum hanger wire connected to the. Light Fixtures 56 lbs 25 4 kg require two No 12 gage minimum hanger wires housing e g canister light fixture and connected to the structure. connected from the fixture housing to the structure above These above This wire may be slack. wires may be slack, Lighting fixtures weighing greater than 10 lbs 4 5 kg but less. Lighting fixtures weighing 56 lbs 25 kg or more require than 56 lbs 25 kg require two No 12 gage minimum hanger. independent support from the structure above by approved hangers wires connected to the fixture housing on opposite diagonal. Pendent hung light fixtures shall be supported by a minimum one corners and connected to the structure above These wires may. No 9 gage wire or other approved alternate support be slack. Rigid conduit is not permitted for the attachment of fixtures Lighting fixtures weighing 56 lbs 25 kg or more require. independent support from the structure by approved hangers. Pendent hung light fixtures shall be supported by a No 9 gage. minimum hanger wire or other approved alternate, Rigid conduit is not permitted for the attachment of fixtures. Note Chart references CISCA Seismic Handbook 2014,Industry Standard Construction. IBC 2012 IBC 2012, SEISMIC DESIGN CATEGORY C SEISMIC DESIGN CATEGORIES D E and F. Flexibly mounted mechanical services weighing less than or equal Flexible mechanical services weighing less than 20 lbs 9 kg must. to 20 lbs 9 kg must be positively attached to main runners or be positively attached to main runners or to cross runners that. cross runners with the same load carrying capacity as the main have the same load carrying capacity as the main runners. runners In addition to the previous requirement for positive attachment. Mechanical Flexibly mounted mechanical services weighing more than 20 lbs flexible mechanical services weighing more than 20 lbs 9 kg. 9 kg but less than 56 lbs 25 kg or less require two No 12 gage but less than 56 lbs 25 kg require two No 12 gage minimum. Services minimum hanger wires These wires may be slack hanger wires connected to the fixture housing on opposite. Flexibly mounted mechanical services 56 lbs or greater require diagonal corners and connected to the structure above These. direct support from the structure wires may be slack. Flexible mechanical services greater than 56 lbs 25 kg require. direct support from the structure, Direct concealed systems must have stabilizer bars a maximum of. 60 in 1500 mm on center with stabilizer bars within 24 in 600. mm of the perimeter, Bracing is required for ceiling plane elevation changes. Cable trays and electrical conduits shall be supported and braced. independently of the ceiling, As an alternate to providing large clearances around sprinkler. system penetrations through ceilings the sprinkler system and. ceiling grid are permitted to be designed by a design professional. and tied together as an integral unit Such a design shall consider. the mass and flexibility of all elements involved including the. Special All ceiling penetrations must have a minimum of 3 8 in 9 5 mm ceiling sprinkler system light fixtures and mechanical HVAC. clearance on all sides, Consideration Seismic separation joints bulkheads braced to the structure or. full height partitions are required that divide the ceiling into areas. less than or equal to 2 500 ft 2 230 m2 Refer to Page 11. Areas divided into 2 500 ft 2 230 m2 sections as above must. have a ratio of the long side to the short side of less than or equal. All ceiling penetrations and independently supported fixtures. or services must have closures which allow for a 1 in 25 mm. A licensed design professional must review the interaction. effects of non essential ceiling components on essential ceiling. components to prevent their failure, The ceiling may not provide lateral support to partitions. Partition bracing must be independent of ceiling, Partitions Partitions attached to the ceiling must use flexible connections to. avoid transferring force to the ceiling, The ceiling weight must be 2 5 psf or less For ceilings over 2 5 psf. Exceptions the prescribed construction for SDCs D E and F must be used. Ceilings less than or equal to 144 ft 2 13 3 m2 and surrounded Ceilings less than or equal to 144 ft 2 13 3 m2 and surrounded. Exemption by walls connected to the structure above are exempt from the by walls connected to the structure above are exempt from the. requirements of this practice requirements of this practice. Note Chart references CISCA Seismic Handbook 2014, Seismic Ceiling International Building Code Install. What Chicago Metallic Suspension Systems can I use for my ceiling. Because ceiling panel performance and non tee bar suspension systems are not well defined in the IBC requirements. ROCKFON is working with an independent internationally renowned structural engineering firm to test both standard. and non standard ceiling systems for seismic performance The results of these full scale seismic tests offer proven. safety and performance support for standard and non standard ceilings flexible design options and more efficient. installation designs, Acceptable systems for use in IBC Seismic Design Categories. Chicago Metallic Intermediate Seismic Heavy Duty Seismic ICC Report. System Duty Design C Design DEF 2631,200 250 Snap Grid X X X X. 640 650 660 670 Drywall X X X X X,660 Wide Face X X X X X. 730 All Stainless Steel X X X X,830 All Aluminum X X X X. 1830 Environmental X X X,1200 1250 Seismic X X X X X. 1260 1280 Aluminum Cap X X X X X,4500 4550 4600 Ultraline X X X X X. 4000 4050 Tempra X X X X X, With use of 416 clips contact technical service for installation instructions. How is the seismic testing conducted and regulated on Chicago Metallic Suspension Systems. Chicago Metallic Suspension Systems including the 1496 perimeter clip 1494 Seismic Separation Clip and 1493. Unopposed Tee Clip were rigorously tested at the Structural Engineering Earthquake Simulation Laboratory SEESL. at the State University of New York at Buffalo The evaluation process including room size testing on shake tables at. the university was monitored by engineers from ROCKFON and the State University of New York at Buffalo as well. as by engineers from an independent structural engineering group to ensure accurate data was properly collected. and summarized,Why is an ICC ES report valuable, ICC ES is the industry leader in performing technical evaluations for code compliance providing regulators and. construction professionals with clear evidence that products comply with codes and standards. Having completed hundreds of evaluations of building products components methods and materials ICC ES has. a proven track record of excellence in product evaluations and customer service. ROCKFON has worked with ICC ES for many years and its products are listed under evaluation report ICC ESR 2631. Many of Chicago Metallic s suspension systems and the 1496 Perimeter Clip are recognized by ICC ES to perform as. required by the current IBC ICC ESR 2631 is available at www icc es org Along with the evaluation details it provides. proper installation requirements, Contact ROCKFON Technical Service for specific components and corresponding SDCs. Note Check local code for installation requirements. Seismic Ceiling System Details Alternative Code Installations. 15 16 in Wall Angle,Chicago Metallic Seismic Suspension Systems. Chicago Metallic s Suspension Systems offer many, solutions for each type of seismic design construction. Most systems are offered in Intermediate Duty and, Heavy Duty performance per ASTM C 635 to satisfy the. requirements of all seismic code constructions The. 1496 Seismic Perimeter Clip, exposed tee construction permits direct upward access Standard System Components. to mechanical systems and is a cost effective solution to 200 250 Snap Grid 1200 1250 Seismic. seismic requirements Stab in cross tees cantilever during 4000 and 4050 Tempra. installation and will not fall out making for an easier 4500 4550 and 4600 Ultraline. 260 280 and 1260 1280 Aluminum Cap, installation and protecting against lateral pull out When 660 Wide Face. utilized with the 1494 Seismic Separation Clip a sleek 730 All Stainless Steel 830 All Aluminum. ceiling design is maintained in seismic installations 1830 Environmental. Drywall Suspension Systems, Contact ROCKFON Technical Service for specific installation instructions based on your SDC. Chicago Metallic 1496 Seismic Perimeter Clip Screw holes are provided for attaching clip to tee. when required, Each seismic design category has specific requirements. Bright gold color makes clip easily identifiable on job. regarding perimeter components and our 1496 Seismic. site inspections, Perimeter Clip has been engineered to meet them Current. Installation of the clip is quick due to pre drilling of. code requirements include a 2 in 50 mm wide perimeter. screw holes, wall molding and stabilizer bars to provide support. Installation time for ceiling panels is reduced by. and prevent the ceiling grid from spreading apart along. eliminating spacer bars and reduced panel damage,the molding. Chicago Metallic 1496 Seismic Perimeter Clip meets seismic 3 8 in 9 5 mm and 3 4 in. Back Plate, criteria set forth by the IBC to stabilize main and cross tees 19 mm dimension markers. at the ceiling s perimeter as detailed in ES Report No 2631. This clip ties together perimeter components and has been. tested and recognized as an alternate method of stabilizing. tees at the perimeter Its robust construction allows. contractors to use a sleek 15 16 in 24 mm angle in lieu of. the less desirable 2 in 50 mm angle and eliminates costly. stabilizer bars,Tee Attachment Screw Holes,Features and Benefits of the 1496 Perimeter Clip. The following Chicago Metallic systems grid are acceptable for use in. ICC ES installation approach ESR 2631 International Building Code Seismic Design Categories. Exceeds IBC requirement of 2 in 51 mm ledge support of Chicago Metallic 1200 Seismic. grid components Chicago Metallic 1260 Aluminum Cap. Chicago Metallic 660 Wide Face, Dimension markers included on clip showing required. Chicago Metallic 4000 Tempra, 3 8 in 9 5 mm and 3 4 in 19 mm clearance of grid to Chicago Metallic 4500 Ultraline. the wall Chicago Metallic 4600 Ultraline, Back plate accommodates additional attachment of clip Contact ROCKFON Technical Service for specific components. to wall and or wall angle and corresponding Seismic Design Categories. Note Check local code for installation requirements. Seismic Ceiling System Details IBC Category C, Conventional IBC Installation Chicago Metallic 1496 Clip Installation ESR 2631. UNATTACHED WALL UNATTACHED WALL,A 1 A 2 B 1 B 2,UNATTACHED WALL. UNATTACHED WALL,UNATTACHED WALL,UNATTACHED WALL,UNATTACHED WALL UNATTACHED WALL. 3 8 in 9 5 mm Min,3 8 in 9 5 mm,7 8 in Spacer Bar,3 8 in 9 5 mm Min. 3 8 in 9 5 mm,Spacer Bar 7 8 in 15 16 in,22 mm Angle. 12 ga hanger wire,Spacer Bar, Seismic Ceiling System Details IBC Category D E and F. Conventional IBC Installation Chicago Metallic 1496 Clip Installation ESR 2631. ATTACHED WALL ATTACHED WALL,C 1 C 2 D 3,12 ft O C 12 ft O C. UNATTACHED WALL,UNATTACHED WALL,ATTACHED WALL,ATTACHED WALL. 12 ft O C 6 ft max 12 ft O C 6 ft max,6 ft max 6 ft max. UNATTACHED WALL UNATTACHED WALL,use this option or D 2 below. C 1 Perimeter Wire,10 from vertical,Perimeter Wire. 10 from vertical,Pop Rivet 15 16 in Angle, C 2 Perimeter Wire D 2 use this option or D 1 above. Perimeter Wire,10 from vertical,10 from vertical,Spacer Bar 2 in Screw Screw. Min 15 16 in Angle,D 3 Perimeter Wire,10 from vertical 3 4 in from grid to inside. LEGEND MEASUREMENTS,3 4 in 19 mm,12 ga hanger wire. 2 in 50 mm 8 in Max,Horizontal Restraint 8 in 203 mm. Refer to illustration on page 13 6 ft 1 8 m,Spacer Bar 12 ft 3 6 m. Seismic Ceiling System Details Separation Joints, Seismic separation joints Features and Benefits of 1494 Seismic Separation. Joint Clip, For large areas differential movements between the. far edges can result in damage to the area This is Shaker table tested. recognized in the building codes by limiting size of Strong code compliant solution for seismic. components such as concrete slabs and requiring a categories D E and F. seismic joint at the edges to allow for the differential Sits on top of the grid members for easy attachment. movement Similarly the building code ASCE 2010 Hidden design provides clean look on finished ceiling. prescribes that for suspended ceilings whose area One piece design works on all applications. exceeds 2 500 ft 2 232 m2 seismic separation joints 1494 Clip can be used on main runners and cross tees. shall be provided The code states which minimizes inventory needs. Maintains ceiling system strength, For ceiling areas exceeding 2 500 ft 2 232 m2 a seismic. Works with most Chicago Metallic Suspension Systems. separation joint or full height partition that breaks the. Hash mark on clips easily identify screw attachment. ceiling up into areas not exceeding 2 500 ft 2 232 m2 each. points in the field, with a ratio of the long to short dimension less than or. equal to 4 shall be provided unless structural analyses are. Chicago Metallic solution 1494 Seismic, performed of the ceiling bracing system for the prescribed. Separation Clip, seismic forces that demonstrate ceiling penetrations and. closure angles or channels provide sufficient clearance to. accommodate the anticipated lateral displacement Each. area shall be provided with closure angles or channels. in accordance with Section 13 5 6 2 2 a and horizontal. restraints or bracing,Cut Lines as Shown,The Chicago Metallic 1494 Seismic Separation Clip. simplifies the installation of the seismic separation. joint allowing the ceiling to be installed as normal. Joints then can be located where necessary to comply. with code requirements,1 On Intersection On Joint Cut. Cut Lines as Shown Cut Lines as Shown, 2 On Intersection Off Joint Cut 3 Off Intersection Off Joint Cut. Note See website for additional installation instructions. Seismic Separation Joint IBC SDCs D E and F, Conventional IBC Installation Chicago Metallic 1494 Clip Installation. 12 ft O C 12 ft O C,12 ft O C 12 ft O C,12 ft 6 ft O C 6 ft O C 12 ft O C. O C max max 12 ft O C,12 ft O C 12 ft O C,Seismic separation joint. seismic joint,1494 clip at each intersection,1428 Angle. Designated seismic separation,1448 Channel 1448 Channel. 1494 Seismic Separation Clip,IMPORTANT Do not place horizontal. restraint over separation joint,LEGEND MEASUREMENTS. 1 5 in 38 mm,12 ga hanger wire,6 ft 1 8 m, Horizontal restraint Refer to illustration on page 13 12 ft 3 6 m. Seismic Ceiling System Details Unopposed Cross Tees. 1 3 Unopposed Tee Clip, According to the IBC all system connections in SDCs D E. and F are required to be stronger than 180 lbs 82 kg of. pull out force The 1493 Unopposed Tee Clip is utilized. when a cross tee does not have another cross tee to. engage the ends and meets the above requirement, when used with Chicago Metallic Suspension Systems. Step 1 Insert clip into slot,Step 2 Bend short leg. Main Runner,Step 3 Insert Cross Tee,1493 Unopposed. Tee Clip UTC Step 4 Insert Screw,Seismic Horizontal Restraint. 12 ga hanger wire typical 4 ft O C,Vertical post,12 ga brace wires. connected to main tee, These horizontal restraint points shall be placed 12 ft 3 6 m on center in both directions with the first point. within 6 ft 1 8 m of each wall Brace wires shall be attached to main tees within 2 in 50 mm of cross tee. intersection at a maximum angle of 45 relative to ceiling plane Wires shall be tied with a minimum of three. tight wraps see ASTM C 636 for examples, For complete details please refer to the current version of ASCE 7. Vertical Struts Allowable Lengths,Maximum Recommended Length for Vertical Struts1. EMT Conduit Metal Studs, 1 2 in 13 mm EMT up to 5 ft 10 in 1 8 m Single 1 5 8 in 41 mm metal stud 20 ga up to 12 ft 3 6 m. 3 4 in 19 mm EMT up to 7 ft 8 in 2 3 m Single 2 1 2 in 63 mm metal stud 20 ga up to 13 ft 6 in 4 1 m. 1 in 25 mm EMT up to 9 ft 9 in 2 9 m Back to back 1 5 8 in 63 mm metal stud 20 ga up to 15 ft 4 5 m. Back to back 2 1 2 in 63 mm metal stud 25 ga u p to 15 ft 4 5 m. Note Plenum areas greater than 15 ft 4 5 m will require engineering calculations 1. Source Northwest Wall Ceiling Bureau Rev 10 09,Clouds and Canopies. 3 14 Island Ceilings 2 Plenum Depth As island ceilings often are used. as accents under conventional suspended ceilings,Island Ceilings ASCE 7 10 Section 13 5 1 and ASTM. they often have drops of 12 in 305 mm or less, E580 1 8 exempt island ceilings from compliance with. As discussed before a ceiling with a very shallow,seismic requirements with the following language. plenum will not move very far before the hanger wires. EXCEPTION Components supported by chains or generate a force opposite to the earthquake force. otherwise suspended from the structure are not Ceilings with deeper plenums will experience larger. required to satisfy the seismic force and relative displacements and can generate larger forces. displacement requirements provided they meet all, 3 Weight The larger the mass of a ceiling the more. of the following criteria, seismic force it can generate which can cause damage to. 1 The design load for such items shall be equal to adjacent structures or components and the island ceiling. 1 4 times the operating weight acting down with a, 4 Services in the Island Ceiling Islands containing services. simultaneous horizontal load equal to 1 4 times the. such as sprinklers lights and mechanical services may. operating weight The horizontal load shall be applied. not be able to move without damage to these services or. in the direction that results in the most critical. having them fall into the occupied space,loading for design. 5 Damage to Adjacent Essential Services Sprinklers. 2 Seismic interaction effects shall be considered in. exit signs and other essential services must not be. accordance with Section 13 2 3,damaged by impact from the island ceiling When an. 3 The connection to the structure shall allow a 360 island ceiling requires bracing it is generally desirable. range of motion in the horizontal plane but ASCE to minimize the visibility of the bracing. 7 also states in section 13 2 3 The functional and. physical interrelationship of components their,Several methods to accomplish this are. supports and their effect on each other shall be, considered so that the failure of an essential or 1 Use lighter gage high strength wire. nonessential architectural mechanical or electrical 2 Place wire bracing at the perimeter angled towards the. component shall not cause the failure of an essential interior of the island. architectural mechanical or electrical component,3 Rigid bracing placed to minimize visibility. This also must be considered with island ceilings, Some conditions that will cause island ceilings to Note that bracing in the center of an island is ineffective and. need bracing are should not be the sole lateral force bracing. 1 Size Large ceilings can generate significant forces Please note that any of the suggestions to minimize. and movement While there is no definitive size limit the visibility of island bracing such as those suggested. small island ceilings such as less than 144 ft 2 13 4 m2 above require the approval of the inspector or local. may not need bracing Large ceilings such as more building code official. than 500 ft 2 46 4 m2 often will need bracing, Note Section references CISCA Seismic Handbook 2014. ROCKFON Ceiling System Cross Reference Guide, ROCKFON offers a wide range of edge options on our acoustic tiles along with numerous suspension. systems Locate the suspension system on the chart to determine the compatible edge details and. vice versa to ensure the system fits and assembles together properly. SUSPENSION SYSTEMS,Edge Detail, Name and Product Angled Tegular Square Tegular Square Tegular Semi Concealed Concealed Concealed X. Number Square Lay In SLT SL Narrow SLN SCD Shiplap SLP CDX. Square Lay In Angled Tegular Square Tegular Semi Concealed Shiplap Concealed X. 200 250 F R Hook,1200 1250 F R Stab,General Applications. Square Lay In,Tempra 4000 4050 F R,Ultraline 4500 4550 F R. Ultraline 4600 1 8 in,Suspension System,Square Lay In. Wide Face AL Cap 660,Square Lay In,BarrierGrid Standard. Special Applications, Square Lay In Angled Tegular Square Tegular Semi Concealed Shiplap Concealed X. AL Cap 260 280 F R,AL Cap 1260 1280 F R, Square Lay In Angled Tegular Square Tegular Semi Concealed Shiplap Concealed X. All Aluminum 830, Square Lay In Angled Tegular Square Tegular Semi Concealed Shiplap Concealed X. HDG G60 1830, Square Lay In Angled Tegular Square Tegular Semi Concealed Shiplap Concealed X. Stainless Steel 730, Pacific Artic Tropic Alaska Alaska dB Artic Tropic Artic Tropic Koral Alaska Sonar Alaska Sonar Alaska Sonar. Koral Alaska Sonar Sonar Activ Koral Color all Alaska Alaska db Sonar dB Color all Medical. Alaska dB Sonar ity Sonar dB Medical Standard Sonar Sonar dB Plus. Sonar Activity Medical Plus Medical Standard,Sonar dB Color All Medical Plus. Acoustic Ceiling Tiles,Hygienic Plus,Medical Standard. Medical Plus,Medical Air Impact,Industrial Facett, Note The Acoustic Ceiling Tiles listed are ROCKFON s trademarked brands.
31-Mar-2020 2 Views 56 Pages
Session 1 Unit 4 Pre-Assessment 3
31-Mar-2020 3 Views 49 Pages
cut in 3-in x 1/2-in sticks 3 cups quinoa with 3 cups stock 6 carrots, cut in 3-in x 1/2-inch sticks 1 1/2 lbs russet potatoes, cubed, with 1 cup water 1 head cauliflower, 2 1/2 cups pearled couscous cut in small florets with 2 1/2 cups stock Barbecue Teriyaki Pick a Protein and place on Deluxe Reversible Rack 8 fresh boneless chicken breasts ...
31-Mar-2020 3 Views 20 Pages
GUIDE 2016 Vegan Restaurant Guide ... than ever are making the switch to a vegan lifestyle that is ... you may learn for yourself that a healthy vegan diet can help ...
31-Mar-2020 3 Views 26 Pages
guide de selection des batteries categ marque cylindree modele annee batt solise moto bimota 1000 yb11 1996-1999 bm12005 moto bimota 1000 yb8 1992-1995 bm12007 moto bimota 1000 sb8r sb8rs 1998-2000 bm12007 moto bimota 1100 sb6 1995-1997 bm12003 moto bimota 1100 sb6r 1997-1999 bm12005 moto bimota 1100 sb7 1995-1997 bm12003 moto bimota 1100 yb8 yb10 1992-1995 bm12007 moto bmw 450 r45n 1978-1985 ...
31-Mar-2020 6 Views 16 Pages
even fully loaded touring. ~, ~7'. '" Strada The front quick release wheel, Alloy pedals, One piece Sugino crankset, and foam handlebar grips are some of the value added featiues of this model. Volpe Bar-con controls, Tange ~., Cro-moly, unicrown fork, Suntour Cyclone-7000, Triple crankset, full braze-ons, Shimano Deore cantilever are the ...
31-Mar-2020 2 Views 217 Pages
Table of Contents Cornsicles with Shrimp and Oregano .....50
31-Mar-2020 5 Views 44 Pages
The Chesapeake Bay Foundation, and the surrounding com-munity, the city was able to preserve the land. It is one of the largest undeveloped pieces of property in the area. Pleasure House Point is now a tidal wetland providing habitats for countless diverse species of wildlife. The iconic Chesapeake Bay blue crab, diamond back terrapin, and the
31-Mar-2020 3 Views 16 Pages
Final Research Paper Female Sexuality during World War II: Prostitution and Patriotism Megan Gehrke History 417: United States, 1900-1960 Professor Rebecca Jager
31-Mar-2020 6 Views 5 Pages
Kosmatka, Steven H. and Panarese, William C. Design and Control of Concrete Mixtures, 15th edition, Portland Cement Association Mindess, Sidney and Young, Francis T., Concrete, Prentice Hall, Englewood Cliffs, N.J. 1981 Neville, A.M., Properties of Concrete 4th edition, Wiley & Sons, New York, 1996 Curing, particularly within the first few hours after concrete placement, is one of the most ...
31-Mar-2020 1 Views 111 Pages
This work was prepared under the International Policy FINAL RESEARCH PAPER COURT REFORM IN THE REPUBLIC OF ARMENIA Arina Hayrapetyan Democratic Governance ...