It's better to have the lumber delivered in smaller loads every few days. The lumberyard should have some kind of storage shelter. On-site, have a few tarps handy so the carpenters can cover the lumber every night to protect it from moisture. Framing The first real framing begins by capping the block with sill plates and hanging the first floor joists . Carpenters frame out typical 2x6 or 2x4 walls on the subfloor then raise them into place.
Headers support the framing load over the door and window openings.
Our main roof was framed with wood I-joist rafters. We did hit a couple of snags when a few intersecting valley and kneewall angles didn't quite work out. Our lead carpenter stopped the hand-framing work a couple times to call us and the architect until the problem got straightened out. Luckily, we did order trusses for the garage roof about the same time. When the house roof framing hit a snag, the framers worked on the garage roof and sheathing which ended up being done before the house was.