Most construction professionals understand "open-ends" in the context of a critical path method (CPM) schedule. Open-ends are activities that have either no predecessors or no successors. Ideally, a schedule has only two such activities on a project - a start milestone which does not have a predecessor, and a finish milestone that does not have a successor. Additional open-ends may find their way into a schedule by the way of interim milestones and/or simply a failure to add a finish activity. For example, Microsoft Project will not allow a single pair of activities to have both a start-to-start relationship and a finish-to-finish relationship, not an uncommon situation encountered in Oracle Primavera and other CPM programs. This may lead the scheduler to simply not put a successor on one of the two activities. Read more.
It is common for construction contracts, particularly public works contracts, to require written notice of any claim for changed or extra work. The notice must be submitted within a stipulated number of days of the event giving rise to the claim and must itemize the increased costs the contractor expects to incur. Failure to give proper timely notice constitutes a waiver of the claim. Read More.
On September 24th, the nation celebrated the opening of the National Museum of African American History & Culture. Designed by David Adjaye and Philip Freelon, the project broke ground in February 2012 on the northeast corner of the Washington Monument grounds. Read more.
To learn more about the museum, visit the Smithsonian website. To learn about the building and its unique architectural features, click here. The project included lowering a restored 77-ton Pullman car and a 21-foot penitentiary guard tower into the basement and finishing the project around them; learn more about the artifacts here.
The “Measured Mile Method” is a technique used for quantifying equitable adjustments (pricing claims) when repetitive or recurring items of work are affected by delay or disruption for which the project owner is responsible. Production rates in unaffected segments of work are compared with production rates for impacted segments of the same work, resulting in a cost comparison. Read more.
Linking Wales with England the one mile long bridge reaches a height of 445 feet at its peak. This video follows a maintenance crew as they walk up and perform their tasks. What's really interesting about this particular video is the use of a 360-degree camera setup. Read more.
Construction claims and changes are the bane of all construction projects. For any number of reasons, scope changes, design conflicts, changed conditions, severe weather, late submittals or late approvals, and potential change orders can be a daily occurrence on complex projects, and sometimes lead to claims.
Successful recovery for valid claims begins with a proper change management program, starting with identification.Read more.
The five-year Panama Canal Expansion project was officially inaugurated on June 26, 2016. The $5.25 billion project started construction in 2007, including a new set of locks on the Atlantic and Pacific sides of the water way and excavation of more than 150 million cubic meters of material, creating a second shipping lane and doubling the cargo capacity of the water way. Read more.