S-BT Threaded Fastener Specification

Specifications page95
S-BT Screw-in threaded studs
5.11 Fire resistance
TestReportNo.20161614andNo.20170384
MPADresdenGmbH–IMORecognizedTestLaboratory(2017)[1]and[2]
General comments
WhenusingHiltiS-BTfastenersincombinationwithreratedboundariesin
Shipbuildingfacilities,theeffectofthefasteneronthemechanicalresistanceof
thesteelbasematerial(bulkheads,decks)hastobeconsidered.Furthermorethe
behavioroftheHiltiS-BTscrew-inthreadedstudsunderreconditions,whilst
supportingaload,hastobechecked.
Test concept
ThetestswereperformedaccordingtherequirementsofIMOResolution
MSC.307(88),FireTestProcedureCode,2010,part3[3].Inordertotestthe
S-BTfastenerinthemostonerousmanner,a“A-0”classbulkhead(uninsulated)
wastestedatMPADresden.
Forthetest,twobulkheadsizeswereused.
ThebigA-0bulkheadisa2980mmsquare.Theplateofthebulkheadconsistsof
a5mmthicksteelplatewith65 x 65 x 6mmL-stiffeneralongtheverticaledges.
Theconstructionaldetailsofthetestspecimenusedaregiveninthecorresponding
testreport[1]andFigure1.
ThesmallA-0bulkheadisa980mmsquareandisfabricatedintwohalves.Viewed
fromtheunexposedfacetheleft-handsideofthebulkheadconsistsofa3mm
steelplatewithaBulbat80x5.0stiffeneralongtheverticaledge.Theright-
handsideofthebulkheadconsistsofa6mmsteelplatewithaBulbat80x5.0
stiffeneralongtheverticaledge.Thereisalsoacentralstiffener(Bulbat80x5.0).
Theconstructionaldetailsofthetestspecimenusedaregiveninthecorresponding
testreport[2]andFigure2.
ThebulkheadswereinstalledsuchthatthestiffenersandtheS-BTstudswereon
theunexposedfaceofthespecimen.
AtotalofeightS-BTthreadedstuds(bigbulkhead)andtenS-BTthreadedstuds
(smallbulkhead)werettedtothebulkheadandweresubjectedtoeitheratension
or shear load.
TheloadingdetailsofeachS-BTstudandanoverviewoftheselectedtestpro-
gramaregiveninTable1andTable2.
Stud # Force
[kN]
Type
of force
S-BT Type Base material
thickness[mm]
1 0.53 Tension S-BT-MRM8/15SN6 6.0(L-stiffener)
2 0.51 Tension S-BT-MRM8/15SN6 5.0(Plate)
3 0.52 Tension S-BT-MFM8/15AN6 5.0(Plate)
4 0.52 Tension S-BT-MFM8/15AN6 6.0(L-stiffener)
5 0.50 Shear S-BT-MRM8/15SN6 6.0(L-stiffener)
6 0.50 Shear S-BT-MRM8/15SN6 5.0(Plate)
7 0.50 Shear S-BT-MFM8/15AN6 5.0(Plate)
8 0.50 Shear S-BT-MFM8/15AN6 6.0(L-stiffener)
Table1:Testprogramofthebigbulkhead2980mmx2980mm
Figure 1: Test facility for fire test
(bigbulkhead)
Figure 2: Testfacilityforfiretest(small
bulkhead)