Assertion: rafter | /r/HasAspect | less weight
Facets:
value: in a conventional design
type: OTHER
value: much
type: DEGREE
Source sentences:
text: Because this roof design doesn't have the added weight of plywood roof sheathing and metal roofs are generally lighter than asphalt-shingle roofs, the rafters have much less weight to bear than they would in a conventional design.