PROMATECT -H Suspended Ceiling Membrane – Type 3

1 PROMATECT -HSuspended Ceiling Membrane Type 32 Ceilings & FloorsGeneral InformationIntroductionPromat carries a wide range of fire rated Ceiling and floor systemswith fire resistance of up to 240 minutes. Generally, PROMATECT Ceiling and floor systems provide horizontal fire barriers to preventvertical spread of Ceiling and floor systems have been extensivelytested and assessed to provide resistance to fire from above, belowor above and below. They satisfy the integrity and insulation criteriaof BS476: Parts 20, 21, 22 and 23: 1987 and/or AS 1530 Part 4. Theflooring systems not only meet the integrity and insulation criteriabut also meet the loadbearing capacity (structural adequacy) criteriaof the British and Australian national system design depends on performance requirements but inoverall terms, PROMATECT Ceiling and floor systems can bedivided into the following Self-supporting Membrane CeilingsThese are normally non-loadbearing and, depending on the type ofconstruction, are used to provide protection from fire attack frombelow and/or above.

2 Ceiling panels are fixed into a steel or timberframing system spanning and supported between two Membrane ceilings should normally be tested orassessed in accordance with BS476: Part 22 and/or AS1530:Part 4 to satisfy the failure criteria of integrity and Ceiling systems allow for the protection to or from servicescontained within the Ceiling void. They will also provide protectionto steel beams that are required to meet the criteria of BS476:Part 23 where exposure to fire is from Suspended Membrane CeilingsThese are normally non-loadbearing and are used to provideprotection from fire attack from below. The ceilings generallyincorporate steel grid systems Suspended from a Membrane ceilings should normally be tested orassessed in accordance with BS476: Part 22 and/or AS1530:Part 4 to satisfy the failure criteria of integrity and Ceiling systems allow for the protection to or from servicescontained within the Ceiling void.

3 They will also provide protectionto steel beams that are required to meet the criteria of BS476:Part 23 where exposure to fire is from Loadbearing Floor SystemsThe flooring can be of timber or chipboard floorboards supportedby either timber joists or steel joists system. PROMATECT boardscan be directly fixed onto these joists or fixed to a suspendedexposed or concealed metal grid type of Ceiling should normally be tested or assessed inaccordance with BS476: Part 21 and/or AS1530: Part 4 and arerequired to satisfy the three failure criteria of loadbearing capacity(structural adequacy), integrity and Suspended Ceiling Protection To steel BeamsThis type of Ceiling is used mainly for protection of steel beamssupporting a loadbearing concrete floor slab and should be testedor assessed to BS476: Part 23 and AS1530: Part 4. PROMATECT boards are fixed to a metal exposed or concealed grid systemsuspended from the structure Ceiling and floor systems require less material toachieve similar fire resistant levels when compared to the industryaverage.

4 This can lead to more simplified construction methodsthan the standard equivalent. Use of PROMATECT therefore helpsto increase productivity and reduce overall installation Ceiling and floor systems have been developed byPromat International to satisfy standard requirements for internalapplications. Benefits include:Time & Cost EffectivenessSimple construction methods reduce installation cost and timecompared to traditional loads on structures compared to industry average systemsfor equivalent fire ResistanceExcellent thermal resistance FlexibilityLighter weight allows increased Ceiling span, reduced supportstructure sizes and/or reduced system PerformanceTested and assessed to ISO140-3 1995 and ISO717-1 1996 to meetthe needs of the industry. Please refer to pages 6 and 7for FixingLongitudinal board joints must coincide with framing the boards are in one layer, the transverse joints must bebacked with fillet strips made of PROMATECT boards or timbernoggings for traditional timber joist construction.

5 For boardslaminated in two layers, the joints must be staggered by atleast boards may be fixed to the steel members Bugle head self-drilling and self-tapping screws. shall be used to fix boards to timber frame. For boardslaminated in two layers, the outer layer boards may be stitched tothe preceding layer with laminating screws. PROMATECT -Smay be fixed to the steel framework using self-tapping/drillingTeks edge distance to fasteners and the maximum spacingbetween screws must be maintained. Please refer to system detailfor screw spacing & FloorsGeneral Information3 General Design ConsiderationsThe following are some of the factors which should be consideredwhen determining the correct specification to ensure a Ceiling or afloor system provides the required design performance under bothfire and ambient conditions. Further advice is readily available froma local Promat Supporting Structure DesignThe design of the framing system should be adequate for thedesign loads of the Ceiling and floor.

6 PROMATECT systems havebeen designed for timber or steel framing as described in thesystem timber framing system used in loadbearing floor application, itmust be designed in accordance with BS5268, and/orAS1684. The width, the depth and the spacing of the joists have tobe carefully specified to ensure that the timber floor will serve itsintended fire steel framed Ceiling systems, it is critical to adhere to thedimension of the steel sections, the grid spacing, the suspensionmembers (if any) and the fastening methods employed. Framingmembers could change depending on the factors such as ceilingspan, movement and deflection and local or more frequent frame sections can often improve thefire and structural performance. The framing for the ceilingsystems must be securely fixed back to a substrate that has anequal or greater fire performance than the Ceiling .

7 All fixings mustbe non-combustible and must be similar to those listed in theapproval Non Loadbearing CeilingsNon loadbearing PROMATECT Ceiling systems can be generallydivided into steel frame Suspended Ceiling and self-supportingmembrane Ceiling . The steel framing as noted in the systemspecification is appropriate for the given span. Larger dimension ofsteel sections or more frequent spacing will be required for a ceilingspan larger than wall connections, mechanical joints are required and these jointsmust be carefully designed so that they accommodate the requiredexpansion of steel at elevated ceilings in this handbook are not ceilings for maintenance purposes can be advice on such designs can be obtained from the PromatTechnical Loadbearing CeilingsThere are two types of PROMATECT loadbearing floor systemsavailable. One is comprised of timber joists while the other is ofsteel joists.

8 Flooring material, timber type, thickness and jointing areall critical. Timber framing shall be of solid timber and must bedesigned in accordance with BS5268, and/or AS1684whereas for steel framing, the members should be designed inaccordance with BS5950 and/or AcousticsCeiling and floor systems have been developed to also meetspecific acoustic requirements. These include ratings for soundtransmission, sound impact and sound absorption. Please refer topages 6 and 7for further Movement JointMovement stress from dimensional changes due to varyingtemperature or moisture conditions can cause cracking andother symptoms of distress in Ceiling external forces such as impact or vibration can directly affectstructural movement of ceilings. This movement can be controlledthrough a variety of design techniques such as introducingperimeter relief and slip connections to reduce the transfer of stressfrom the structure to other building sub-elements and/or throughthe use of expansion joints, control joints and construction joints are needed when a Ceiling abuts a rigid Ceiling dimensions exceed 10m in either direction, a controljoint should be used.

9 Control joints should also be located tointersect column penetrations, light fixtures and air diffusers. It ishowever, the introduction of a control joint into a fire-rated systemwhen an opening for flame and temperature transmission iscreated. This and similar openings have to be properly treated withapproved Promat fire-stopping Caulking & Service PenetrationsTo maintain the fire performance and, where applicable, theacoustic performance of the Ceiling system, perimeter and othergaps must be appropriately filled with suitable caulking AN Acrylic Sealant or other tested fire and acousticrated material of equivalent or better performance must be needs to be taken in detailing a suitable fire-stopping systemaround any penetration of the Ceiling by services to ensure:a) the fire-stopping material remains in situ,b) fire and smoke do not penetrate the floor cavitywhich ultimately will lead to,c) premature collapse of the joists and/or penetration offire and smoke through the timber should be made for thermal movement of the services inboth ambient and fire conditions to ensure loads are not applied tothe Ceiling assembly.

10 Some examples of service penetrationsinclude those penetrations by electrical cables, conduits or wires,plastic and metal pipes, air-conditioning and ventilation guidance on the sealing of service penetrations can beobtained from page Light FittingsLight fittings located within a Ceiling cavity should normally beenclosed in an adequately supported fire protection box to preventfire spreading rapidly into the Ceiling cavity. Most light fittings willrequire ventilation in normal use and this consideration shouldcertainly be factored into light box design. Please consult Promatfor Access Panels & HatchesWhere access into a Ceiling void is required, panels and hatches willneed to be installed. Please refer to separate PDFs for this area orconsult Promat Technical Department for Resistant To ImpactPROMATECT -H offers a particularly robust system which is highlyresistant to impact and abrasion.