valley rafter การใช้

• As part of the new roof construction, a second valley rafter was inserted into the south slope of the roof parallel to the first.
• The wind-brace may have been removed to facilitate the addition of the new valley rafter, while the purlin was removed to create the required through-access.
• The new valley rafter was jointed to a corresponding rafter on the west slope, and the apex of the new construction set at a lower level than its predecessor.
• The initial opening up of the roof was achieved by inserting a robust valley rafter into the south slope; this abuts one of the retained original common rafters and is jointed in place.