This Gibb vent as molded is too short and the horizontal pipe should be open at either end. This pipe just rested on top of the trunk vent rather then bending down into it as seen in part G12.

Rebuild the Gibbs vent using the method outlined in the the Mushroom Vent section of the Vent Overview but use a larger diameter plastic stock for the top. The vent should be as tall as the GSC staircase skylight.

The pipe was hollow so use either hollow brass rod or Evergreen plastic rod or sprue and paint a black dot of paint on each end to make it look hollow.

• Note: Bob Read has suggested that the pipe may not have been an operational pipe at all. It may have been used to hang canvas over it to dry when needed, this function being delegated to a crew only area. We are uncertain at this time if this is correct but it does seem plausible when looking at an enlarged section of the Beken photo in conjunction with aerial Olympic photos.