30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Condition:
NewNew
The author, an expert civil engineer, critically analyzes the bridge's live load assumptions, unit stresses, and overall design philosophy. The author places the Blackwells Island Bridge within the wider context of bridge engineering practices at the turn of the 20th century, exploring the evolution of live load estimation and the use of safety factors.