{"title":"Drainage \u0026 Base","description":"\u003cp\u003eWater is the single biggest reason retaining walls fail. Soil that cannot drain builds hydrostatic pressure behind the wall, and that pressure sits on top of the earth pressure the wall was designed for. Everything in this group is about getting water out and getting the base right.\u003c\/p\u003e\u003ch3\u003eThe four parts, and what each one does\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eJob\u003c\/th\u003e\n\u003cth\u003eSizing rule\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/10mm-and-20mm-drainage-gravel-aggregate\"\u003eDrainage gravel\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eForms the free draining zone behind the sleepers\u003c\/td\u003e\n\u003ctd\u003e300mm wide zone, full height, full length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/collections\/drainage\"\u003eAgi pipe\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eCollects the water and carries it to a discharge point\u003c\/td\u003e\n\u003ctd\u003e65mm to 1m high, 100mm at 1m and above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/collections\/geo-fabric\"\u003eGeo fabric\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eStops fines migrating into the gravel and clogging it\u003c\/td\u003e\n\u003ctd\u003eFull wall length plus overlap on joins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/collections\/concrete-cement-bags\"\u003eCement and concrete bags\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSets the posts into the pier holes\u003c\/td\u003e\n\u003ctd\u003eAbout 16 bags per post per metre of pier depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eA worked example\u003c\/h3\u003e\u003cp\u003eA 10 metre wall, 1 metre high, in 2380mm sleepers needs 6 posts. That comes out at roughly 3m3 of drainage gravel, 10 metres of agi pipe, 10 metres of geo fabric plus overlap, and about 96 bags of concrete for six 450mm pier holes 1 metre deep. Double the wall height and the gravel volume doubles with it.\u003c\/p\u003e\u003cp\u003eThe \u003ca href=\"\/pages\/retaining-wall-calculator\"\u003ewall calculator\u003c\/a\u003e works all of that out from a length and a height, and the \u003ca href=\"\/pages\/retaining-wall-drainage-guide\"\u003edrainage guide\u003c\/a\u003e sets out quantities per lineal metre if you want to check it by hand.\u003c\/p\u003e\u003ch3\u003eBuild order\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eLine the excavation behind the wall with geo fabric in a U shape.\u003c\/li\u003e\n\u003cli\u003eLay the agi pipe at the base, graded so water runs to an outlet that actually goes somewhere.\u003c\/li\u003e\n\u003cli\u003eBackfill with drainage gravel, never soil or road base.\u003c\/li\u003e\n\u003cli\u003eFold the fabric over the top of the aggregate and cover the last 200mm with soil.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eThe \u003ca href=\"\/blogs\/guides\/drainage-management\"\u003edrainage management guide\u003c\/a\u003e covers the sequence and the \u003ca href=\"\/blogs\/guides\/installation-cross-section-diagram\"\u003ecross section diagram\u003c\/a\u003e shows how it all sits together.\u003c\/p\u003e\u003ch3\u003eTwo things before you order\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBulk gravel is delivery only.\u003c\/strong\u003e We supply and deliver it to your site and do not offer pickup for it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFire ants.\u003c\/strong\u003e Bulk gravel, sand and soil are regulated material under the South East Queensland fire ant movement controls, and those obligations apply to you as the receiver as well as to us. Check \u003ca href=\"\/pages\/delivery-installation\"\u003eDelivery and Installation\u003c\/a\u003e before you order.\u003c\/p\u003e","products":[{"product_id":"easy-mix-20kg-bag-general-purpose-cement","title":"Easy Mix 20kg Bag General Purpose Cement","description":"\u003cp\u003eEasy Mix 20kg Bag General Purpose Cement offers a reliable solution for various building and landscaping needs. Known for its strength and quality, it ensures durable results for both small and large-scale projects. Whether you're constructing foundations, pavements, or other outdoor structures, this cement delivers lasting performance. Ideal for builders and landscapers who require a consistent, high-quality product.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdetails\u003e\u003csummary\u003eInstallation\u003c\/summary\u003e\u003cp\u003eHYBUILT have partnered with only the most experienced installers across South East Queensland and Northern NSW, offering a complete design \u0026amp; construct solution through competitive pricing and innovation. Enquire with our team to book your next project.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDelivery Notes\u003c\/summary\u003e\u003cp\u003eDepending on the order size HYBUILT can usually deliver your materials within 2-3 business days after order confirmation. To efficiently carry out these duties HYBUILT operates an entire fleet of crane trucks in a variety of sizes to suit both load size and\/or potential access constraints. Please note that there is delivery charges involved and this will depend on load size, distance and potential access constraints. We deliver to Brisbane, Gold Coast, Ipswich, Sunshine Coast, Toowoomba and Northern NSW\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003eQuestions about your project? See our \u003ca href=\"\/blogs\/guides\"\u003einstallation guides\u003c\/a\u003e, \u003ca href=\"\/pages\/request-quote\"\u003erequest a quote\u003c\/a\u003e, or call \u003ca href=\"tel:0737160191\"\u003e(07) 3716 0191\u003c\/a\u003e.\u003c\/p\u003e","brand":"HYBUILT","offers":[{"title":"Default Title","offer_id":53937761747055,"sku":"CEM-GP-20","price":8.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/files\/Easy_Mix_GP_Cement.webp?v=1785839361"},{"product_id":"easy-mix-20kg-bag-rapid-set-concrete","title":"Easy Mix 20kg Bag Rapid Set Concrete","description":"\u003cp\u003eEasy Mix 20kg Bag Rapid Set Concrete delivers fast and dependable results, perfect for all your building and landscaping needs. Ideal for footings, post setups, and smaller repairs, it ensures a strong bond and quick setting time. Simply mix and apply for an efficient solution that saves you time on site. Trust HYBUILT for quality and reliability on every job.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConcrete Strength\u003c\/th\u003e\n\u003ctd\u003e25 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdetails\u003e\u003csummary\u003eInstallation\u003c\/summary\u003e\u003cp\u003eHYBUILT have partnered with only the most experienced installers across South East Queensland and Northern NSW, offering a complete design \u0026amp; construct solution through competitive pricing and innovation. Enquire with our team to book your next project.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDelivery Notes\u003c\/summary\u003e\u003cp\u003eDepending on the order size HYBUILT can usually deliver your materials within 2-3 business days after order confirmation. To efficiently carry out these duties HYBUILT operates an entire fleet of crane trucks in a variety of sizes to suit both load size and\/or potential access constraints. Please note that there is delivery charges involved and this will depend on load size, distance and potential access constraints. We deliver to Brisbane, Gold Coast, Ipswich, Sunshine Coast, Toowoomba and Northern NSW\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003eQuestions about your project? See our \u003ca href=\"\/blogs\/guides\"\u003einstallation guides\u003c\/a\u003e, \u003ca href=\"\/pages\/request-quote\"\u003erequest a quote\u003c\/a\u003e, or call \u003ca href=\"tel:0737160191\"\u003e(07) 3716 0191\u003c\/a\u003e.\u003c\/p\u003e","brand":"HYBUILT","offers":[{"title":"Default Title","offer_id":53937762009199,"sku":"CEM-RS-20","price":11.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/files\/Easy_Mix_Rapid_Set_Concrete.webp?v=1785839365"},{"product_id":"easy-mix-20kg-bag-concrete","title":"Easy Mix 20kg Bag Concrete","description":"\u003cp\u003eEasy Mix 20kg Bag Concrete is the go-to for premium builders delivering reliable, high-quality strength for all your construction needs. Ideal for creating stable foundations, retaining walls, and other projects, it ensures durability and performance. Designed for ease of use, this concrete mix is the ideal solution for your next project.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConcrete Strength\u003c\/th\u003e\n\u003ctd\u003e25 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdetails\u003e\u003csummary\u003eInstallation\u003c\/summary\u003e\u003cp\u003eHYBUILT have partnered with only the most experienced installers across South East Queensland and Northern NSW, offering a complete design \u0026amp; construct solution through competitive pricing and innovation. Enquire with our team to book your next project.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDelivery Notes\u003c\/summary\u003e\u003cp\u003eDepending on the order size HYBUILT can usually deliver your materials within 2-3 business days after order confirmation. To efficiently carry out these duties HYBUILT operates an entire fleet of crane trucks in a variety of sizes to suit both load size and\/or potential access constraints. Please note that there is delivery charges involved and this will depend on load size, distance and potential access constraints. We deliver to Brisbane, Gold Coast, Ipswich, Sunshine Coast, Toowoomba and Northern NSW\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003eQuestions about your project? See our \u003ca href=\"\/blogs\/guides\"\u003einstallation guides\u003c\/a\u003e, \u003ca href=\"\/pages\/request-quote\"\u003erequest a quote\u003c\/a\u003e, or call \u003ca href=\"tel:0737160191\"\u003e(07) 3716 0191\u003c\/a\u003e.\u003c\/p\u003e","brand":"HYBUILT","offers":[{"title":"Default Title","offer_id":53937762238575,"sku":"CEM-CN-20","price":10.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/files\/Easy_Mix_Concrete.webp?v=1785839368"},{"product_id":"geo-fabric-rolls","title":"Geo Fabric Rolls","description":"\u003cp\u003eGeo fabric sits between the retained soil and the drainage aggregate behind your wall. Without it, fines migrate into the gravel and clog the drainage zone, and a blocked drain is the same as no drain at all.\u003c\/p\u003e\n\u003cp\u003eIt is the cheapest part of the drainage system and the one most often left off a materials list. It is also the part that decides whether the gravel and \u003ca href=\"\/products\/drainage-coil-agi-pipe-socked\"\u003eagi pipe\u003c\/a\u003e you paid for are still working in five years.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eRoll\u003c\/th\u003e\n\u003cth\u003eCoverage\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1m x 50m\u003c\/td\u003e\n\u003ctd\u003e50 square metres\u003c\/td\u003e\n\u003ctd\u003e8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2m x 50m\u003c\/td\u003e\n\u003ctd\u003e100 square metres\u003c\/td\u003e\n\u003ctd\u003e16kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth rolls work out to the same rate per square metre, so the width is a practical choice rather than a price one.\u003c\/p\u003e\n\u003ch3\u003eWhich width\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1m\u003c\/strong\u003e suits low walls, garden terraces and raised beds, where the fabric only has to line the back of the wall and turn over the top of the drainage zone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2m\u003c\/strong\u003e suits taller walls and any job where you want to line the cut, run up the back of the excavation and still have enough left to fold over the aggregate. On a 1m high wall the fabric has to cover the full height of the drainage zone plus the return, so a 1m width leaves you nothing to overlap with.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow much to order\u003c\/h3\u003e\n\u003cp\u003eWork on the full length of the wall, plus an allowance for overlapping joins. Our \u003ca href=\"\/pages\/retaining-wall-calculator\"\u003ewall calculator\u003c\/a\u003e works it out alongside your gravel and agi pipe, and the \u003ca href=\"\/pages\/retaining-wall-drainage-guide\"\u003edrainage guide\u003c\/a\u003e sets out quantities per lineal metre.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eInstallation\u003c\/summary\u003e\u003cp\u003eThe fabric goes in before the gravel, not after. Line the excavation behind the sleepers in a U shape, lay your \u003ca href=\"\/products\/drainage-coil-agi-pipe-socked\"\u003eagi pipe\u003c\/a\u003e at the base, backfill with \u003ca href=\"\/products\/10mm-and-20mm-drainage-gravel-aggregate\"\u003edrainage gravel\u003c\/a\u003e, then fold the fabric over the top of the aggregate so soil and fines cannot wash into it from above.\u003c\/p\u003e\n\u003cp\u003eOverlap joins by a generous margin rather than butting them together. A butted join is where the fines get in. The \u003ca href=\"\/blogs\/guides\/drainage-management\"\u003edrainage management guide\u003c\/a\u003e shows the sequence, and the \u003ca href=\"\/blogs\/guides\/installation-cross-section-diagram\"\u003ecross section diagram\u003c\/a\u003e shows where the fabric sits relative to the post, the sleepers and the backfill.\u003c\/p\u003e\n\u003cp\u003eHYBUILT have partnered with only the most experienced installers across South East Queensland and Northern NSW, offering a complete design \u0026amp; construct solution through competitive pricing and innovation. Enquire with our team to book your next project.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDelivery Notes\u003c\/summary\u003e\u003cp\u003eDepending on the order size HYBUILT can usually deliver your materials within 2-3 business days after order confirmation. Order the fabric at the same time as your gravel and agi pipe, because coming back for a roll of geo fabric after the gravel is already on site is a bad day. To efficiently carry out these duties HYBUILT operates an entire fleet of crane trucks in a variety of sizes to suit both load size and\/or potential access constraints. Please note that there is delivery charges involved and this will depend on load size, distance and potential access constraints. We deliver to Brisbane, Gold Coast, Ipswich, Sunshine Coast, Toowoomba and Northern NSW\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003eQuestions about your project? See our \u003ca href=\"\/blogs\/guides\"\u003einstallation guides\u003c\/a\u003e, \u003ca href=\"\/pages\/request-quote\"\u003erequest a quote\u003c\/a\u003e, or call \u003ca href=\"tel:0737160191\"\u003e(07) 3716 0191\u003c\/a\u003e.\u003c\/p\u003e","brand":"HYBUILT","offers":[{"title":"1m \/ 50m","offer_id":53937786585199,"sku":"DRN-GEO-1M-50","price":80.0,"currency_code":"AUD","in_stock":true},{"title":"2m \/ 50m","offer_id":53937786617967,"sku":"DRN-GEO-2M-50","price":160.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/files\/Geo-Fabric-Rolls-1m.png?v=1785839596"},{"product_id":"drainage-coil-agi-pipe-socked","title":"Drainage Coil Agi Pipe Socked","description":"\u003cp\u003eSocked agi pipe is the drainage line that runs along the base of your retaining wall. The pipe collects the water that makes it through the drainage gravel and carries it away to a discharge point, which is what keeps hydrostatic pressure off the back of the wall.\u003c\/p\u003e\n\u003cp\u003eThe sock is a geotextile filter sleeve bonded over the slotted pipe. It stops fines washing into the slots and silting the line up. \u003cstrong\u003eWe recommend socked pipe for most retaining walls.\u003c\/strong\u003e Use \u003ca href=\"\/products\/drainage-coil-agi-pipe-unsocked\"\u003eunsocked\u003c\/a\u003e only where the pipe sits inside a geo fabric wrap at the base of the aggregate, because the fabric is already doing the filtering.\u003c\/p\u003e\n\u003ch3\u003eWhich size\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60mm and 65mm\u003c\/strong\u003e suit walls up to 1m high.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100mm\u003c\/strong\u003e is for walls 1m and above, and for any wall where a lot of water drains toward it from uphill. If in doubt, go up a size. The cost difference is small against the cost of a failed wall.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eCoil length\u003c\/th\u003e\n\u003cth\u003eApprox weight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003ctd\u003e20m\u003c\/td\u003e\n\u003ctd\u003e4.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003ctd\u003e50m\u003c\/td\u003e\n\u003ctd\u003e11.9kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e65mm\u003c\/td\u003e\n\u003ctd\u003e20m\u003c\/td\u003e\n\u003ctd\u003e5.1kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003ctd\u003e20m\u003c\/td\u003e\n\u003ctd\u003e10.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003ctd\u003e50m\u003c\/td\u003e\n\u003ctd\u003e26.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eWeights are based on published Vinidex Draincoil SN8 slotted pipe figures for the nearest equivalent nominal size, with an allowance added for the sock, which the manufacturer does not publish separately. They are a freight guide, not a certified figure. Coils are bulky rather than heavy, so delivery cost on agi pipe is usually driven by the space it takes on the truck.\u003c\/p\u003e\n\u003ch3\u003eHow much you need\u003c\/h3\u003e\n\u003cp\u003eOne run, the full length of the wall, plus enough to reach your discharge point. Order a little over rather than joining two coils in the middle of a trench. Our \u003ca href=\"\/pages\/retaining-wall-calculator\"\u003ewall calculator\u003c\/a\u003e works it out alongside your gravel and geo fabric.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eInstallation\u003c\/summary\u003e\u003cp\u003eThe pipe goes in before the gravel, at the very base of the drainage zone behind the bottom sleeper, sitting on a level or slightly graded bed so water runs to the outlet rather than sitting in a low spot. Line the excavation with \u003ca href=\"\/collections\/geo-fabric\"\u003egeo fabric\u003c\/a\u003e first, lay the pipe, backfill with \u003ca href=\"\/products\/10mm-and-20mm-drainage-gravel-aggregate\"\u003edrainage gravel\u003c\/a\u003e, then fold the fabric over the top.\u003c\/p\u003e\n\u003cp\u003eThink about where the water actually goes. A pipe that ends in the middle of the yard has moved the problem, not solved it. Our \u003ca href=\"\/blogs\/guides\/drainage-management\"\u003edrainage management guide\u003c\/a\u003e covers the sequence and the \u003ca href=\"\/blogs\/guides\/installation-cross-section-diagram\"\u003ecross section diagram\u003c\/a\u003e shows where it sits.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDelivery Notes\u003c\/summary\u003e\u003cp\u003eDepending on the order size HYBUILT can usually deliver your materials within 2-3 business days after order confirmation. Agi pipe is light but bulky, so it is best added to an existing materials delivery rather than freighted on its own. To efficiently carry out these duties HYBUILT operates an entire fleet of crane trucks in a variety of sizes to suit both load size and\/or potential access constraints. Please note that there is delivery charges involved and this will depend on load size, distance and potential access constraints. We deliver to Brisbane, Gold Coast, Ipswich, Sunshine Coast, Toowoomba and Northern NSW\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003eQuestions about your project? See our \u003ca href=\"\/blogs\/guides\"\u003einstallation guides\u003c\/a\u003e, \u003ca href=\"\/pages\/request-quote\"\u003erequest a quote\u003c\/a\u003e, or call \u003ca href=\"tel:0737160191\"\u003e(07) 3716 0191\u003c\/a\u003e.\u003c\/p\u003e","brand":"HYBUILT","offers":[{"title":"60mm Socked 20m","offer_id":53937787207791,"sku":"DRN-AGI-S-060-20","price":85.0,"currency_code":"AUD","in_stock":true},{"title":"60mm Socked 50m","offer_id":53937787240559,"sku":"DRN-AGI-S-060-50","price":170.0,"currency_code":"AUD","in_stock":true},{"title":"65mm Socked 20m","offer_id":53937787273327,"sku":"DRN-AGI-S-065-20","price":95.0,"currency_code":"AUD","in_stock":true},{"title":"100mm Socked 20m","offer_id":53937787306095,"sku":"DRN-AGI-S-100-20","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"100mm Socked 50m","offer_id":53937787338863,"sku":"DRN-AGI-S-100-50","price":330.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/files\/Drainage-Coil-Agi-Pipe-Socked-100mm.png?v=1785839604"},{"product_id":"drainage-coil-agi-pipe-unsocked","title":"Drainage Coil Agi Pipe Unsocked","description":"\u003cp\u003eUnsocked agi pipe is slotted corrugated drainage coil without the geotextile filter sleeve. It is the cheaper of the two, and it is the right choice in one specific situation: where the pipe sits inside a geo fabric wrap at the base of the drainage aggregate, so the fabric is already filtering out the fines.\u003c\/p\u003e\n\u003cp\u003eIf the pipe is going in without that wrap, order \u003ca href=\"\/products\/drainage-coil-agi-pipe-socked\"\u003esocked pipe\u003c\/a\u003e instead. An unsocked line laid straight against soil silts up, and a blocked drain is the same as no drain at all.\u003c\/p\u003e\n\u003ch3\u003eWhich size\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60mm and 65mm\u003c\/strong\u003e suit walls up to 1m high.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100mm\u003c\/strong\u003e is for walls 1m and above, and for any wall where a lot of water drains toward it from uphill.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eCoil length\u003c\/th\u003e\n\u003cth\u003eApprox weight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003ctd\u003e20m\u003c\/td\u003e\n\u003ctd\u003e4.3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003ctd\u003e50m\u003c\/td\u003e\n\u003ctd\u003e10.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e65mm\u003c\/td\u003e\n\u003ctd\u003e20m\u003c\/td\u003e\n\u003ctd\u003e4.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003ctd\u003e20m\u003c\/td\u003e\n\u003ctd\u003e9.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003ctd\u003e50m\u003c\/td\u003e\n\u003ctd\u003e24kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eWeights are based on published Vinidex Draincoil SN8 slotted pipe figures for the nearest equivalent nominal size. They are a freight guide, not a certified figure. Coils are bulky rather than heavy, so delivery cost on agi pipe is usually driven by the space it takes on the truck.\u003c\/p\u003e\n\u003ch3\u003eHow much you need\u003c\/h3\u003e\n\u003cp\u003eOne run, the full length of the wall, plus enough to reach your discharge point. Order a little over rather than joining two coils in the middle of a trench. Our \u003ca href=\"\/pages\/retaining-wall-calculator\"\u003ewall calculator\u003c\/a\u003e works it out alongside your gravel and geo fabric.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eInstallation\u003c\/summary\u003e\u003cp\u003eLine the excavation behind the wall with \u003ca href=\"\/collections\/geo-fabric\"\u003egeo fabric\u003c\/a\u003e in a U shape, lay the pipe at the base of that wrap, backfill with \u003ca href=\"\/products\/10mm-and-20mm-drainage-gravel-aggregate\"\u003edrainage gravel\u003c\/a\u003e, then fold the fabric over the top of the aggregate. That wrap is what makes unsocked pipe acceptable here.\u003c\/p\u003e\n\u003cp\u003eGrade the line so water runs to the outlet rather than sitting in a low spot, and make sure the outlet actually discharges somewhere it can go. Our \u003ca href=\"\/blogs\/guides\/drainage-management\"\u003edrainage management guide\u003c\/a\u003e covers the sequence and the \u003ca href=\"\/blogs\/guides\/installation-cross-section-diagram\"\u003ecross section diagram\u003c\/a\u003e shows where it sits.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDelivery Notes\u003c\/summary\u003e\u003cp\u003eDepending on the order size HYBUILT can usually deliver your materials within 2-3 business days after order confirmation. Agi pipe is light but bulky, so it is best added to an existing materials delivery rather than freighted on its own. To efficiently carry out these duties HYBUILT operates an entire fleet of crane trucks in a variety of sizes to suit both load size and\/or potential access constraints. Please note that there is delivery charges involved and this will depend on load size, distance and potential access constraints. We deliver to Brisbane, Gold Coast, Ipswich, Sunshine Coast, Toowoomba and Northern NSW\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003eQuestions about your project? See our \u003ca href=\"\/blogs\/guides\"\u003einstallation guides\u003c\/a\u003e, \u003ca href=\"\/pages\/request-quote\"\u003erequest a quote\u003c\/a\u003e, or call \u003ca href=\"tel:0737160191\"\u003e(07) 3716 0191\u003c\/a\u003e.\u003c\/p\u003e","brand":"HYBUILT","offers":[{"title":"60mm Unsocked 20m","offer_id":54028216565871,"sku":"DRN-AGI-U-060-20","price":55.0,"currency_code":"AUD","in_stock":true},{"title":"60mm Unsocked 50m","offer_id":54028216598639,"sku":"DRN-AGI-U-060-50","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"65mm Unsocked 20m","offer_id":53937787666543,"sku":"DRN-AGI-U-065-20","price":60.0,"currency_code":"AUD","in_stock":true},{"title":"100mm Unsocked 20m","offer_id":53937787699311,"sku":"DRN-AGI-U-100-20","price":125.0,"currency_code":"AUD","in_stock":true},{"title":"100mm Unsocked 50m","offer_id":53937787732079,"sku":"DRN-AGI-U-100-50","price":230.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/files\/Drainage-Coil-Agi-Pipe-Unsocked.png?v=1785839608"},{"product_id":"10mm-and-20mm-drainage-gravel-aggregate","title":"10mm and 20mm Drainage Gravel \/ Aggregate","description":"\u003cp\u003e\u003cstrong\u003e10mm and 20mm drainage gravel\u003c\/strong\u003e is a tough, crushed rock that lets water move through quickly, making it ideal for any job where you need reliable drainage. It's commonly used to fill trenches, pack around ag‑pipes, and sit behind retaining walls to take pressure off the structure. Because it's free‑draining and doesn't break down, it helps stop waterlogging, reduces erosion, and keeps the area stable over time.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cp\u003eTo work out how much drainage gravel you require (volume) of cubic meters (m3), use the following equation: Wall Length x Drainage Hole Width (we recommend 300mm) x Wall Height\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eInstallation\u003c\/summary\u003e\u003cp\u003eHYBUILT have partnered with only the most experienced installers across South East Queensland and Northern NSW, offering a complete design \u0026amp; construct solution through competitive pricing and innovation. Enquire with our team to book your next project.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDelivery Notes\u003c\/summary\u003e\u003cp\u003eWe supply and deliver the drainage gravel to your site. We do not provide pick up options. The price shown covers the gravel and delivery to local areas within the northern and southern suburbs of Brisbane. Beyond those suburbs a delivery surcharge applies. Any delivery rate shown at checkout is indicative only, and our team confirms the final delivery cost for your delivery address before your order is dispatched, so there is no freight surprise after you have paid. We can deliver within the radius of the regions of the Sunshine Coast, Kingaroy, Toowoomba, Warwick, the Gold Coast and Northern NSW.\u003c\/p\u003e\n\u003cp\u003eDepending on the order size HYBUILT can usually deliver your materials within 2-3 business days after order confirmation. To efficiently carry out these duties HYBUILT operates an entire fleet of crane trucks in a variety of sizes to suit both load size and\/or potential access constraints. Any delivery surcharge beyond local Brisbane depends on load size, distance and potential access constraints. We deliver to Brisbane, Gold Coast, Ipswich, Sunshine Coast, Toowoomba and Northern NSW\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003eQuestions about your project? See our \u003ca href=\"\/blogs\/guides\"\u003einstallation guides\u003c\/a\u003e, \u003ca href=\"\/pages\/request-quote\"\u003erequest a quote\u003c\/a\u003e, or call \u003ca href=\"tel:0737160191\"\u003e(07) 3716 0191\u003c\/a\u003e.\u003c\/p\u003e","brand":"HYBUILT","offers":[{"title":"3m3 of 10mm","offer_id":53937788715119,"sku":"DRN-GRV-10-03","price":390.0,"currency_code":"AUD","in_stock":true},{"title":"4m3 of 10mm","offer_id":53937788747887,"sku":"DRN-GRV-10-04","price":470.0,"currency_code":"AUD","in_stock":true},{"title":"5m3 of 10mm","offer_id":53937788780655,"sku":"DRN-GRV-10-05","price":520.0,"currency_code":"AUD","in_stock":true},{"title":"6m3 of 10mm","offer_id":53937788813423,"sku":"DRN-GRV-10-06","price":590.0,"currency_code":"AUD","in_stock":true},{"title":"7m3 of 10mm","offer_id":53937788846191,"sku":"DRN-GRV-10-07","price":650.0,"currency_code":"AUD","in_stock":true},{"title":"8m3 of 10mm","offer_id":53937788878959,"sku":"DRN-GRV-10-08","price":710.0,"currency_code":"AUD","in_stock":true},{"title":"9m3 of 10mm","offer_id":53937788911727,"sku":"DRN-GRV-10-09","price":770.0,"currency_code":"AUD","in_stock":true},{"title":"10m3 of 10mm","offer_id":53937788944495,"sku":"DRN-GRV-10-10","price":830.0,"currency_code":"AUD","in_stock":true},{"title":"3m3 of 20mm","offer_id":53937788977263,"sku":"DRN-GRV-20-03","price":390.0,"currency_code":"AUD","in_stock":true},{"title":"4m3 of 20mm","offer_id":53937789010031,"sku":"DRN-GRV-20-04","price":470.0,"currency_code":"AUD","in_stock":true},{"title":"5m3 of 20mm","offer_id":53937789042799,"sku":"DRN-GRV-20-05","price":520.0,"currency_code":"AUD","in_stock":true},{"title":"6m3 of 20mm","offer_id":53937789075567,"sku":"DRN-GRV-20-06","price":590.0,"currency_code":"AUD","in_stock":true},{"title":"7m3 of 20mm","offer_id":53937789108335,"sku":"DRN-GRV-20-07","price":650.0,"currency_code":"AUD","in_stock":true},{"title":"8m3 of 20mm","offer_id":53937789141103,"sku":"DRN-GRV-20-08","price":710.0,"currency_code":"AUD","in_stock":true},{"title":"9m3 of 20mm","offer_id":53937789173871,"sku":"DRN-GRV-20-09","price":770.0,"currency_code":"AUD","in_stock":true},{"title":"10m3 of 20mm","offer_id":53937789206639,"sku":"DRN-GRV-20-10","price":830.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/files\/Drainage-Gravel.png?v=1785839623"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/collections\/Drainage-Gravel-1.jpg?v=1786608123","url":"https:\/\/hybuilt.com.au\/collections\/drainage-base.oembed","provider":"HYBUILT","version":"1.0","type":"link"}