Mesh Mess

FEM, CFD, CAE, and all that.

Tag: building code

Size of deallocated pointer in Fortran

Something I just found out. A deallocated pointer retains its size in terms of the return  of the SIZE function. Specifically, if the pointer is first allocated with size n and later deallocated, SIZE function still returns n. I’ve checked this on GNU and PGI Fortran and got same results, but not sure whether this is compiler dependent. Check standards later.


A test station in the Caspian Sea

English Russia has this post about how a naval weapon test station was constructed in the Caspian Sea. Though impaired by the wavy sea (the wave height during a storm in Caspian sea could reach 7.5-8.0 m) and abandoned, the structure remains untoppled after over half a century. The construction of the foundation, is quite a engineering masterpiece even for today’s standard:

The entire underwater part of the gigantic construction, called “Massive”, was built on the shore in the foundation pit with a capacity of 530,000 cubic meters. Sometimes they even dug by hand, but more often dredgers were used.

On the bottom of the foundation pit a huge ferroconcrete “box” was built, measuring 14 meters high. Next, the plate separating the pit from the sea was destroyed and the surfaced “box” was dragged to the building site of the station. There, in 1935, the “box” was filled with water and placed on the specially site, which was made of quarry stone. Thereafter construction of the station was done in a usual way, with people and materials being delivered by ships.

Preparing for the Big One:Audio from the National Building Museum

Preparing for the Big One: Assessing American Building Codes

“The 2010 earthquakes in Haiti and Chile reinforced the importance of building codes. Are regions in the United States just as vulnerable to a catastrophic earthquake? David Applegate, Senior Science Advisor for Earthquake and Geologic Hazards at the U.S. Geological Survey; Michael J. Armstrong, Senior Vice President, International Code Council; and Michael Mahoney, Geophysicist, Federal Emergency Management Agency discuss the state of seismic building codes around the country. Tom Ichniowski, DC Bureau Chief for Engineering News-Record, moderates.”

“Bad buildings kill them”

A troubling fact is that some HARD evidences are required before people learn a lesson which is learned before by others, at other location, even in a recent past. It is less than two years after China’s quake in 2008 taking over 80,000 lives, and now Haiti. I am reading almost the exact comments about Haiti earthquake as I did two years ago about China. What is in common for the two cases? They are at the poorest region. Unlike Haiti, China may be at a better position of infrastructure construction and building code implementation. However, the region being attacked two years ago is one of most underdeveloped regions in southwest China, where the building codes were hardly enforced.

It is the human nature (or government?) of ignoring risks that are not imminent, even when we are presented with dead cold records.