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REINFORCED CONCRETE POSTSOn the previous trip to Lubang Island we had some concrete posts made up for fencing. We stipulated that they should have reinforcing steel in them. On arrival they did have rebars projecting from them for external attachments. However in a later typhoon some were damaged and the reinforcing bars were seen to be bamboo stems. On this trip Myrna decided to have the fence posts, and some concrete columns for an out-building, made on site. I was intrigued by the project, and this page is made up of photos I took while watching processes. I was interested to see that the post holes, dug in sand, were fairly wide and relatively shallow but filled with rocks and cement around the base of the rebars. Materials used included, 1/4 inch plywood sheets for the molds, 2x4" lumber cut from coconut trees, 8mm and 10mm steel reinforcing rods. The concrete mix was a 1:6 ratio of cement to sand with stones added while pouring. |
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