Viking A-Frames diagrams........
The examples of Norse tents come from the Oseberg and Gokstad ship burials. There are only a few minor differences between the two sets of burials. The Gokstad ship is some time pictured with a tent stretched over the center. This however is a modern addition based on a saga description.
Only the gable boards survived on the Gokstad ship. They are made of oak. These are between the two sets from the Oseberg ship in size. The gable boards on all the tents had carvings of animal heads. The Gokstad heads had accents in yellow and black and the Oseberg boards had religious symbols painted, possibly in red.
For further details and information on Norse Tents.. check out http://www.ravensgard.org/prdunham/tents.html
and The Viking Answer Lady