Understanding Hipped Roofs

What distinguishes a hipped roof from more traditional roof constructions?

• Its eaves are pitched like the rest of the roof.

• It has vertical eaves.

• It lacks a horizontal ridge.

• It uses less timber.

What is the primary function of the hip rafter in a hipped roof?

• To connect the wall plate to the ridge

• To provide a base for the eaves

• To support the purlins at mid-span

• To support the ridge board

How do opposing rafters in a hipped roof support each other?

• Through the wall plate's tying action

• Through tension along the ceiling joists

• By leaning against each other at an angle

• Via a metal angle plate

What prevents roof spread in a hipped roof?

• The weight of the roof tiles

• The continuous tie of the ceiling joists

• Nailing the rafters at the eaves

• The purlin's mid-span support

Why is the purlin crucial in a hipped roof's structure?

• It provides a base for the roof tiles.

• It ties the rafters together at the ridge.

• It prevents the rafters from bending under load.

• It supports the hip rafter.

How is the purlin supported in a hipped roof without a gable wall?

• Using metal angle plates

• By the ceiling joists

• Through internal walls and masonry piers

• By the ridge board

What is the significance of continuous ceiling joists in a hipped roof?

• They support the purlins.

• They support the weight of the roof.

• They act as a tie from wall plate to wall plate.

• They provide insulation.

Why must rafters be nailed to both the wall plate and the ceiling joist?

• To support the weight of the roof tiles

• To prevent the rafters from sagging

• To ensure proper alignment

• To facilitate the ceiling joist's tying function

What is the purpose of cutting purlins at 45 degrees in a hipped roof?

• To increase structural integrity

• For aesthetic reasons

• To fit the hip arrangement

• To reduce material usage

Why is it important for the wall plate to be continuous and joined at the corners in a hipped roof?

• To prevent water leakage

• To carry out a tying function for the hip member

• To provide a base for the rafters

• To support the ceiling joists