-^-q(f- 



Figure 2. Manasquan Inlet, New Jersey 



armor unit designs. Dolosse have been used on over 50 coastal projects through- 

 out the world. 



Rehabilitation was completed on the south jetty in 1980. The first step of the 

 rehabilitation of the jetties was to disassemble them. Sand was excavated and 

 dislodged armor stones were reshaped to the design configuration prior to dolos 

 placement. Dolosse were placed on the outer 122 m (400 ft) of the north, or 

 channel side of the jetty, around the structure head, and along the outer 36.5 m 

 (120 ft) of the south side of the structure. Dolosse extended to -3 m (-10 ft) on 

 the channel side at a slope of one vertical on two horizontal (1V:2H). Inshore of 

 the dolos section, the side slopes were armored with a single layer of 10,885-kg 

 (12-ton) stone. The outer 122 m (400 ft) of the jetty crest is a concrete cap; the 

 inner portion of the jetty crest is 10,885-kg (12-ton) stone. The original sheet- 

 pile core was left in place in its existing condition. The sheet pile extends the 

 entire length of the jetty and has a top el of +2.4 m (+8 ft). Work on the north 

 jetty began in 1980 and was completed in 1982. Dolosse were placed along the 

 outer 76 m (250 ft) of the jetty on its north side, around its head, and along the 

 outer 27.5 m (90 ft) on the channel side. Stone was used to armor the inner 

 portions of the jetty on both sides. Construction drawings of typical cross 

 sections for the jetties are shown in Figures 7 and 8. 



Chapter 1 Introduction 



