Browse Forums Paving & Concreting Re: Concreting advice pls 141Mar 12, 2015 8:49 pm Shhhhh! They'll keep asking another 30 years and the young fella will have a back the same as me.. the grey lady is always honest, though she can be a bag of nails at times and trying to convince her she is a bag of ball bearings is the difficulty.. Where you are coming from is where you are going to... Re: Concreting advice pls 142Mar 13, 2015 10:26 am Cut joints cannot be cut right up to brickwork, it means uncut portion will crack and look ugly. Cut joints are only for relief of concrete shrinkage and bending stresses but are no good as expansion joints. So if you are cutting you also need expansion joints. Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Concreting advice pls 143Mar 13, 2015 11:00 am correct reviewing my post I omitted to make this clear Where you are coming from is where you are going to... Re: Concreting advice pls 145Mar 13, 2015 3:12 pm building-expert Cut joints cannot be cut right up to brickwork, it means uncut portion will crack and look ugly. Cut joints are only for relief of concrete shrinkage and bending stresses but are no good as expansion joints. So if you are cutting you also need expansion joints. That's a very valid point. Also would there be a possibility that saw cut can damage termite protection barrier? Re: Concreting advice pls 146Mar 13, 2015 3:31 pm I think you would need to make sure the termite barrier was under the bottom of the concrete in preparation and before pour not encased in concrete. Saw cut should be 25%. So 100mm concrete. Steel mesh at 50mm and saw cut 25mm deep above steel mesh. That is what I have gathered but stand to be corrected. Re: Concreting advice pls 147Mar 13, 2015 3:56 pm onc_artisan correct reviewing my post I omitted to make this clear Thanks onc_artisan, it's nice to be acknowledged I also try to do the same whenever possible Cheers Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Concreting advice pls 148Mar 16, 2015 5:19 pm Re: Concreting advice pls 149Mar 16, 2015 5:26 pm Not sure what the building tolerances are but looks pretty damn close to me! Re: Concreting advice pls 150Mar 16, 2015 5:53 pm Same here, not sure technicality on this but looking very close. Let's see what's experts will tell us. Re: Concreting advice pls 152Mar 16, 2015 6:00 pm That's good to know Crazyk, means we are within tolerance. If you don't mind asking how far your slab was? Re: Concreting advice pls 153Mar 16, 2015 6:04 pm Hi mirz looking at that on face value it looks like things are pretty spot on. But on looking at your pics and having seen the lot it doesn't seem right. Admittedly I don't know how it all works so I'm trying to read up and understand it all myself. Re: Concreting advice pls 154Mar 16, 2015 6:31 pm Hi mirz sorry to hijack your thread somewhat but I was hoping someone can help read/explain what this all means. I've tried to look at what you and others have posted but my head hurts now Thought I had a light bulb moment before posting this but that got blown pretty quickly so back to square one. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: Concreting advice pls 156Mar 16, 2015 7:12 pm siapao Hi mirz sorry to hijack your thread somewhat but I was hoping someone can help read/explain what this all means. I've tried to look at what you and others have posted but my head hurts now Thought I had a light bulb moment before posting this but that got blown pretty quickly so back to square one. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Siapao You bottom level house slab will be 310mm higher than the top right corner of your block. The table on the bottom left of your drawing notes all FL's and is nice and clear to understand. Re: Concreting advice pls 157Mar 16, 2015 7:28 pm Hi Mirz, if your FFL are correct as drawn then doesn't that mean the builder knew from the beginning that retaining walls would be needed? Why were they not on the drawings? Have you asked them this? Concreting advice pls 158Mar 16, 2015 7:35 pm Liliana Hi Mirz, if your FFL are correct as drawn then doesn't that mean the builder knew from the beginning that retaining walls would be needed? Why were they not on the drawings? Have you asked them this? I did ask this question earlier, and their response was if site cut isn't more than 300mm then there is no need of retaining walls to build by builder. They advised us to build retaining walls where required for landscaping purpose. Re: Concreting advice pls 159Mar 16, 2015 7:36 pm Crazyk siapao Hi mirz sorry to hijack your thread somewhat but I was hoping someone can help read/explain what this all means. I've tried to look at what you and others have posted but my head hurts now Thought I had a light bulb moment before posting this but that got blown pretty quickly so back to square one. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Siapao You bottom level house slab will be 310mm higher than the top right corner of your block. The table on the bottom left of your drawing notes all FL's and is nice and clear to understand. So the TBM (Point of reference) is the electricity pit? RL = Road Level? Which in this instance is the height of the foot path? Are the following observations correct? - The Ground Floor FFL is 310mm above the TBM - The First Floor FFL is 3200mm above TBM - The Garage FFL is 224mm above TBM - The Porch FFL is 52mm above TBM - The Alfresco FFL is 138mm above TBM - So basically all points referenced above with respect to the slab is above street level/TBM? - My lot is pretty much flat from the front to rear at the middle points there is a fall of (100.09-100.04)*1000 = 50mm fall? And looking at the lot from the street left to right there is greater fall of 220mm taking the centre point into account? Looking at the below elevation does this mean there shouldn't be any cut into the land to make the finish surrounding the slab lower than the TBM apart from the path which leads from the rear of the house to the rear side door of the garage? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Is the Freeboard the allowance to allow for water to flow from the property to the street in case the stormwater system of the house is inundated. As long as whatever we do from a landscaping and paving point of view maintains the levels and things are designed to make water flow away from the house? Re: Concreting advice pls 160Mar 17, 2015 6:46 am mirz Liliana Hi Mirz, if your FFL are correct as drawn then doesn't that mean the builder knew from the beginning that retaining walls would be needed? Why were they not on the drawings? Have you asked them this? I did ask this question earlier, and their response was if site cut isn't more than 300mm then there is no need of retaining walls to build by builder. They advised us to build retaining walls where required for landscaping purpose. Where are they getting the 300mms from? Have they given you a reference? It would be useful to have that information. One other point - how do they account for the fact that the land along the side of your house slopes towards the house and not away from it? It will be neat but you won't have much freeboard. At least they are not weep holes. Are you in a high intensity rainfall region? The regulatory slope is only required… 3 8265 We've had decent weather for last 7 weeks and now the drvieway has been cut out we had an evening of 50mm of rain including all the water from half the street, ground is… 0 4474 Just get as close as you can without hitting the posts. Once you are close to the edge of the path the chance of cracking is minimised. 7 9174 |