re: Vangbalk, spanten en bekleding

 Its a very interesting build, and  is certainly making my head spin!
, ... are you sure your not Dr Who?
I am not sure if this is correct but its what I found
 

What is the meaning of spinnekop? 
 spinnekop (plural spinnekoppe, diminutive spinnekoppie) spider; predatory anthropod from the order Araneae. 

PS love the clamps I bet they are making LBD nervous