Especially this bit:
Dr Richard Clarke, lecturer at the Engineering Department of the University of the West Indies advises:
1. Ensure that your home, your place of work and your children's schools meet the specifications laid down in the small building code.
The code is available from the Bureau of Standards or online from the Board of Engineering of Trinidad and Tobago's website (www.boett.org).
2. Dr Clarke summarises the Small Buildings Code:
(a) Make sure your foundation is properly built;
(b) the walls should be made with150mm (6-inch) blocks which are joined to foundation, columns, and roof tie beam with steel reinforcing rods;
(c) the reinforcing rods should not be placed at the block joints, rather they should go though carefully made holes in the blocks;
(d) after the reinforced steel is placed in the blocks, the blocks should be filled with concrete mixed in the proper proportions as recommended by the guide;
(e) when the concrete is being poured into the blocks, it should be rodded (compacted using steel rods) to ensure that there are no air bubbles in the concrete;
(f) make sure you have linked "tie beams" at the top of the walls, tying the walls (both external and internal) together; and,
(g) ensure that the all parts of the roof are properly joined together and then joined to the tie beams.
See original here: http://guardian.co.tt/news/general/2010/03/03/how-save-your-life-if-disaster-strikes
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