krumme11 Posted March 12, 2009 Share Posted March 12, 2009 Hi Does anyone know how much for the labour cost for the roof constructions made of steel ? Link to comment Share on other sites More sharing options...
Rimmer Posted March 12, 2009 Share Posted March 12, 2009 Roof welders typically make a little more than your average worker. But in all fairness I don't think anyone here can answer your question accurately, maybe your best bet would be to show your plans which should include roof drawings and steel sizes to a builder or roofing contractor. Link to comment Share on other sites More sharing options...
trogers Posted March 12, 2009 Share Posted March 12, 2009 (edited) Roof welders typically make a little more than your average worker. But in all fairness I don't think anyone here can answer your question accurately, maybe your best bet would be to show your plans which should include roof drawings and steel sizes to a builder or roofing contractor. What Rimmer said is correct. Installation cost involves not just actual labour, but lifting equipment, cutting, splicing and welding equipment and consumables. A good contractor will also use dye to check on quality of welds. Edited March 12, 2009 by trogers Link to comment Share on other sites More sharing options...
loong Posted March 13, 2009 Share Posted March 13, 2009 Sister -in -laws new house started about 9 months ago. Single storey 12m x 6m Labour cost to Dig 15 holes and put in 15 precast reinforced concrete pillars Cut weld and fit roof structure and paint Tile with cement fibre type tiles 17,000 Baht plus food plus whiskey Link to comment Share on other sites More sharing options...
trogers Posted March 13, 2009 Share Posted March 13, 2009 (edited) What kind of cross beams tie the 15 concrete pillars together? Edited March 13, 2009 by trogers Link to comment Share on other sites More sharing options...
loong Posted March 13, 2009 Share Posted March 13, 2009 Trogers The roof structure is welded to the reinforcing bar at the top of the pillars. Seems to be the way they do it here. The job is not top-notch, could have done with an extra coat of the protective paint and the pillars are not at exact 90 degree angles to each other. The walls have been built now and as they've not taken that into consideration the rooms are a bit out of square. The actual roof structure and welds seem pretty good though. Link to comment Share on other sites More sharing options...
trogers Posted March 13, 2009 Share Posted March 13, 2009 (edited) The roof structure is welded to the reinforcing bar at the top of the pillars. Such a structure is an engineer's nightmare. Proper joints should be a steel plate bolted and grout to the top of the pillars and the roof structure welded to this plate. Not welding a steel member to filmsy rebars. The roof steel structure is uses as a cross beam (the triangular frame) tying 3 pillars together in Y-axis direction. But the the X-axis direction of 5 pillars has no cross beam tying them rigidly. Come a strong gust of wind in this direction can shear the joints of the pillars and roof structure and the roof and pillars will collapse. Such a roof design is that of a shed, and not one for a house. Edited March 13, 2009 by trogers Link to comment Share on other sites More sharing options...
loong Posted March 14, 2009 Share Posted March 14, 2009 In this case the triangular frames are connected at the ends, middle and apex by welded steel sections. So all pillars are connected on both axes. I think that the pillars are precast to order and there is an extra rebar about 12mm and shaped like candy twist As we know building standards are not the same here in Thailand as in the west. Link to comment Share on other sites More sharing options...
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