Som Tester101 nämnde, är det i denna applikation nära belastning på fälgbjälken, eftersom dina faktiska bjälkar stöds av strålen. Spikning genom fälgbjälken i slutet av de andra bjälkarna kommer att bli bra. Jag har byggt många däck så här.
Här är en studie som gjordes för slutspikning och de relevanta rekommendationerna :
Recommendations
Nails driven into the end grain of wood do resist both static and impact loads. However, additional research is required in several areas. Of the 4,723 data points on the relationship of specific gravity to nail withdrawal strength, only 294 data points were from tests of nails with a diameter larger than 2.52 mm (0.099 in.). Therefore, research is needed on endgrain withdrawal capacity of nails with a diameter greater than 4.1 mm (0.163 mm) so that Equation (5) can be further developed.
Furthermore, none of the studies evaluated repetitive loading of nails from the end grain since joints in service typically do not experience strictly static or impact loading. Repetitive loading may cause end-grain withdrawal capacity to significantly decrease over time.
There is conflicting data on how threaded nails perform in comparison with smooth shank nails when withdrawn from the end grain. Three studies showed an increase in nail withdrawal capacity whereas one study showed a decrease. Since the use of threaded fasteners in construction is increasing, more research is needed to determine the effects of surface characteristics on end-grain withdrawal.
Finally, more research is needed to determine the long-term withdrawal strength of nails driven into end and side grain. The data in this report suggest that over time end-grain and side-grain withdrawal capacity may become equivalent. Very few test replicates measuring the effect of time delay on withdrawal strength were conducted, and more tests need to be run to clarify these limited observations.
Om du fortfarande känner att du behöver mer support, kan du hitta något så här: 
vid de flesta hårdvaruaffärer. Om du arbetar med tryckbehandlat timmer kommer du ihåg att du behöver galvaniserade plattor och kontakter.
