L's in Tans

The following pictures show L's (with short side 1) packed inside the smallest known tan (with short side s).

1.
           2.
           3.
s = 3
Trivial. 		s = 3√2 = 4.242+
Trivial. 		s = 5
Trivial.

4.
           5.
           6.-7.
s = 4√2 = 5.656+
Found by Maurizio Morandi
in July 2012 		s = 2 + 3√2 = 6.242+
Found by Maurizio Morandi
in July 2012. 		s = 7
Trivial.
 

8.
           9.
           10.
s = 11/√2 = 7.778+
Trivial. 		s = 8
Trivial. 		s = 6√2 = 8.485+
Trivial.

11.-12.
           13.
           14.
s = 9
Trivial.
  		s = 2 + 11/√2 = 9.778+
Found by Maurizio Morandi
in July 2012. 		s = 7√2 = 9.899+
Trivial.
 

15.
           16.
           17.-18.
s = 10
Trivial. 		s = 15/√2 = 10.606+
Trivial. 		s = 11
Trivial.