Browse Forums Building A New House 1 Dec 30, 2020 6:25 am Hey everyone, long time lurker, new time poster! So my partner and I just purchased a block of land in SA, below are the details but in general we are seeking advice regarding site costs/retaining wall positions. 947sqm 33mm Length x 29mm Width 4m slope left to right and flat front to back. Home size - 25m Long x 14.75m Wide (Roughly 2m of slope over the building envelope) Id post to contour lines although there copy we received is so blurry that you can't make out anything, so best that i don't. We were originally told to budget anywhere from 70,000-150,000$ in site costs + retaining walls, does this sound credible considering the slope or is this typical of Metricon trying to jack up the quote? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Regards. Re: 4m Side Sloping Block (Questions!) 2Dec 30, 2020 7:48 am with that much difference left to right
i would look to custom builder with garage under house on low side obviously i dont think those site costs quoted will be enough i think it will be a lot more i think they are underquoting to get you to sign up Re: 4m Side Sloping Block (Questions!) 3Dec 30, 2020 8:05 am aussieta with that much difference left to right i would look to custom builder with garage under house on low side obviously i dont thing those site costs quoted will be enough i think it will be a lot more i think they are underquoting to get you to sign up Interesting, Metricon came back with $70,000 site cost allowance and mentioned that they do not believe the house needs to be split, as per the above picture of the house. We are certainly considering the garage slab on a separate level although we are at least hoping costs are not too extravagant. Re: 4m Side Sloping Block (Questions!) 4Dec 30, 2020 9:09 am We had a good amount of slope in our building envelope too, far more than M's quoted "600 mm maximum slope" -- so we had a landscaper level the block to within about 300 mm. Nevertheless, the site cost allowance stayed around 80k, which mainly went into about 30k cost for slab upgrade for additional piering. This was due to the soil engineering report classing the site as “P” due to the works despite most of the site being naturally "M" class due to the extremely hard and old clay of the hillside. Re: 4m Side Sloping Block (Questions!) 5Dec 30, 2020 11:14 am Just for reference for anyone who has detailed knowledge of contour maps (which i don't) 108.32 (Left Hand Street Side) 105.08 (Right Hand Street Side) 108.57 (Left Hand Rear Fence) 105.22 (Right Hand Rear Fence) Maybe if someone could provide some insights of what heights i would be expecting for retaining? House is intended to sit on the left hand side of the property. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: 4m Side Sloping Block (Questions!) 6Dec 30, 2020 11:15 am r_13 We had a good amount of slope in our building envelope too, far more than M's quoted "600 mm maximum slope" -- so we had a landscaper level the block to within about 300 mm. Nevertheless, the site cost allowance stayed around 80k, which mainly went into about 30k cost for slab upgrade for additional piering. This was due to the soil engineering report classing the site as “P” due to the works despite most of the site being naturally "M" class due to the extremely hard and old clay of the hillside. Any idea how much slope you had? At this point I'm gathering as much reference information as possible! I gather the difference between "P" and "M" soil types inflated slab costs significantly? Re: 4m Side Sloping Block (Questions!) 7Dec 30, 2020 11:22 am assuming trying to keep house one level if site works raise right hand side of building envelope 500mm depends on width of actual house would need approximately 2m retaining wall left hand side you have around 2.5m fall left to right most garages have a 2.4 ceiling height i think split level will look better and be a lot cheaper Re: 4m Side Sloping Block (Questions!) 8Jan 02, 2021 5:06 pm DanielAkula Any idea how much slope you had? At this point I'm gathering as much reference information as possible! I gather the difference between "P" and "M" soil types inflated slab costs significantly? The soil classification regarding foundation movement is explained here: https://www.vba.vic.gov.au/consumers/gu ... n-movement Quote: Soil classifications include: A – non‐reactive – sand and rock sites – little or no ground movement S – slightly reactive clay sites M, M–D – moderate reactive clay or silt – movement due to moisture changes H1, H1–D – highly reactive clay sites H2, H2–D – very highly reactive E, E–D – extremely reactive P – soft soil, vary depths of fill – reactive sites subject to abnormal moisture conditions or sites which cannot be classified otherwise. Our block according to Landsat had about 6m slope corner to corner, but probably around 4m slope within the building envelope before we did the original earthworks. At the time of levelling the site, we asked our landscaper to make the area as level as achievable within the size of the building +1m on each side by cutting into the hill at the back of the house as much as possible to minimize filling at the front, then batter the remaining slope to natural ground level at 45 degrees slope. This type of site earthworks was allowed by our Council without a permit. Give Jonathan a call. Tell him you know me. He is in my opinion the best surveyor I have ever worked with. His number is 0425 285 622 All the best Simeon 3 12415 i did click it, still couldnt make it out rofl. in any case, doesnt look like too extreme a slope, you may be in luck. Just shoot out some emails to volume builders in… 3 18569 Howdy all. I am looking for feedback on what people would do to maximise and make an area as flat as possible. First, out the front of the house is a sloping hill, pretty… 0 20158 |