The latest 7.2 magnitude earthquake in Bohol and Cebu plus the Super Typhoon Yolanda (Haiyan) that hits Central Visayas are also lessons for those who consider construction as ‘an ordinary thing’… It’s MANDATORY to build a house in the Philippines with a durable technology and seek services of only professionals…
Most Pinoys will probably rebuild their home exactly the same way; and wait for the next devastating storm. The Philippine government hopefully will build SUSTAINABLE and AFFORDABLE housing for them.
But what makes a house ‘Super Typhoon- and Earthquake Proof’?
Forget about a ‘corrugated steel sheets roof’. It appears to be technically IMPOSSIBLE to construct any ‘concrete home’ with a ‘corrugated steel/zinc sheeting roof’ (whether with wooden frame or steel purlins) that will withstand a direct hit from a ‘Super Typhoon’ like Yolanda without substantial damage.
Contrary to popular belief, most homes are NOT blown over during a Super Typhoon. Instead, you will most likely hear a ‘strange sound’ coming from the ceiling for a while… after which the complete roof will explode outwards followed by your appliances and maybe the cat.
A ‘corrugated steel/zinc sheeting roof’ might also be slowly ‘eaten away’ piece by piece.
Thus; consider a concrete roof deck…
‘Waffle Box Building Technology’ has it all.
It is a ‘reinforced concrete shell design’; concrete floor, walls and roof deck (ceiling), reinforced with steel bars and monolithically poured in one-go. Using one form only… (How do we do that?? Just ask us by E-mail…)
It lacks the (weak-) connections of ‘wall-panels or hollow blocks between posts’ and/or pre-cast roof panels.
It has the structural integrity of an aircraft fuselage or a ship hull.
It has ‘portal frames’ every 60 centimeter distance; they are steel bars inside the poured concrete which look like a ‘door jamb’:
Each portal frame consists of a ‘ring of steel bars’ which is casted in one-go inside your concrete floor, walls and roof deck (ceiling). Using one form only… (How do we do that?? Just ask us by E-mail…)
The walls plus roof is 6 inch thick where needed (portal frames); 2 inch thick in between, to save about 50% concrete/weight.
PS: we build apartments, hotels, schools etc. exact the same way, typhoon- and earthquake proof…
A secure safe room? Evacuation shelters in the Philippines
Instead of making your complete house ‘typhoon- and earthquake proof’, you can opt to put one ‘Shelter Waffle Box’ (20 square meter) in your garden, to protect you and your family against flying cars… Adjusted with steel doors and window shutters.
Shelter construction in the Philippines; for bomb, underground, fallout, emergency, earthquake, disaster, tornado, storm, tsunami, radiation etc.
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