Why? Because it seems to be a weak link.
Yes, I have a problem with welds too.
When I worked for the largest steel bldg manuf in the SE US an engineer told
me that when a steel building fails the welds are the first things that are
Its true that welds are stronger than the material around them but they are
also more brittle and therefore more susceptible to stress.
Rather than glues and welds I prefer mechanical fasteners.
But in the realm of design and construction I don't always get to have my
Whether a weld is more brittle or not depends on much other than simply
being a weld. I'd hazard a speculation that just as in the subject
case, the prime root cause of a weld failure will be, in essence, a
manufacturing defect although far more often the "manufacturing" in the
case of welding is on-site rather than factory, the parallel is
essentially complete imo.
There are failures in fasteners and fastener systems, too. The upshot
is, no system is perfect either in manufacture nor installation. One
can try to achieve it, and failures are, overall, remarkably few, but
some have occurred and others will in the future despite our best
efforts to avoid them.
A blanket condemnation of any particular system (other than truly
egregious blunders, of course) is not a productive solution or proposal.
Thats why they make consultants. ;-)
FWIW: I've used prolly several thousand miles worth of plywood-n-glue joists
in the homes I've designed.
A little bit o' glue and a personal hang-up won't stop be from doing my job.
The bigger issue isn't with welds per se, it is with welders. Making
high quality welds in the fields isn't always easy and the variability
of field welds can be high. Shop welds are pretty reliable. Bolts are
reliable also because they are made in factories and are pretty tolerant
There ya go, human error.
Happens all the time.
My brother was a *mechanic* on the carrier Midway during the Iran thing in
the early 80's and his job was to run continuous magnaflux scans on the
welds in the hull, inside and out. He told me that they made simultaneous
welds, inside and outside cause the steel was so thick, and variances can
occur. Back in the old days they just lapped the stuff and riveted it. What
alot of people might not know is that a large military ship is like a seive,
there is water leaking into it all the time so they run bilge pumps 24/7.
Apparently this is something thats inherent to the nature of the elements
and the size of the vehicle.
A gentleman named Joe Barta provided the site for them when I built the
house. I don't have a personal web site and posting pictures to a
non-binaries group is a no-no so I'm not sure of a way to make them
I think it may depending on the community and the local needs. In a
tornado zone it would seem to make a lot of sense.
With a timber framed building, if the building is designed properly for ease
of exit and fire containment, if fire does take hold after people are out,
it is a matter of razing to the slab and erecting cheaply again. In the
case of a school the building is isolated from others so danger of next door
catching fire. In many cases with many products it is best to replace than
repair (cars come to mind once major work is need when they are 5 to 7 years
Shelters against what? Whether every public building should be a
shelter or not is certainly debatable. In tornado country out here,
the interiors are built to be reasonably safe within the competing
demands of size, functionality, and yes (shudder!) cost. Despite what
some would think, there aren't unlimited resources for such projects.
In general, it is more the responsibility of individuals to provide
their own protection unless at a location at the time of the event that
isn't their domicile. In that case, it's prudent to make those
facilities reasonably safe, but not practical to ensure complete safety
under all possible scenarios.
For most shelters, I don't think the purpose of the shelter is to
protect people during the event, it is for afterwards. You need to
keep some infrastructure & housing in place for those unfortuneate
enough to have their homes destroyed.
In a building with people in it, it is a matter of retaining a fire long
enough for evacuation. Huf Haus in Germany have wooden suspended floors and
a cement screed on top to give that solid feel - and it also retains fire as
Lighter and probably cheaper too. Also sound or thermal insulating
materials can be inserted in the voids. Gives thermal mass too in a
lightweight wooden building. No heavy cranes needed, etc. A wooden "I"
beam can have one man fit and lift. Try that with concrete or steel.
I haven't seen too many schools built by small crews. The size of the
building requires cranes of one sort or another. Sound transmission,
except at very low frequencies (structurally transmitted sounds such as
machine vibrations), decreases with increased mass. Thermal insulating
materials and thermal mass are not necessary between occupied floors.
The precast plank floor would go up faster than a framed floor with a
lightweight concrete topping. Et Cetera.
The OP has never stated what *type* of school this is so both of us, all of
us, may be going down the wrong path.
It could very well be a small school built by a church, which is very common
in FL, or other private agencies.
The original post had a link. On that page you can see the temporary
classrooms next to the _biggest_ basketball court I've ever seen in my
life. <= joke
The school building in question is in the background - small picture,
not a small school.
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