The significance of the Chapter title is quite literal. The chapter is literally about the huts built on the beach. The chapter addresses the problem that the boys are faced with. They need food and want meat, but they also need shelter. Ralph and Simon argue with Jack because Ralph and Simon and a few others have worked very hard to build two "shaky" shelters without any help from Jack and his "hunters". Jack argues that the agreement was that he and his hunters were exempt from building shelter because they needed meat to eat. Simon and Ralph want help because they feel the boys need shelter more than meat especially for the "lilttleuns" because they are frightened. This is where we start to see the lines truly divide between the boys- they begin to be two separate entities- the hunters and gatherers, rather than one unit working together.
The struggle between civilization and savagery is apparent in this chapter.
Ralph feels the priority should be shelter, building huts on the beach.
Jack does not care about that, he wants to hunt. His descent into savagery is apparent. The struggle between the two powers and priorities is obvious in this chapter.
the kids are trying to be civilized by making huts as shelter. some of the kids, like jack, only care about hunting and other things instead of staying alive and having shelter.