They’re not just big — they’re a big investment, too. So how do you figure out which sofa and what components you need? By Tim McKeough What’s so great about a sectional sofa? “It’s the Swiss Army ...

What’s so great about a sectional sofa? “It’s the Swiss Army knife of seating,” said Chris Weir, a partner at Studio Collins Weir, an interior design firm in Sausalito, California. “You can program a ...