{"title":"Concrete \u0026 Cement Bags","description":"\u003cp\u003eBagged concrete and cement for setting retaining wall posts, and for the smaller jobs around a build. All three are Easy Mix 20kg bags, so they handle the same way and stack the same way on a pallet.\u003c\/p\u003e\u003ch3\u003eWhich bag\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcrete\u003c\/strong\u003e is the standard mix for pier holes. Reach for it when you have the time to let the piers cure before the sleepers go in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid set concrete\u003c\/strong\u003e is the one to use when you need to keep moving. Set the posts, get them plumb and braced, and carry on rather than waiting out a full cure. It costs a little more per bag and buys back a day on site.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral purpose cement\u003c\/strong\u003e is cement on its own, not a concrete mix, so it needs sand and aggregate added. Use it for mortar and patching work rather than for piers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow many bags\u003c\/h3\u003e\u003cp\u003eBag counts come from your pier hole size and depth, which come from your wall design. The arithmetic is straightforward once you have those two numbers.\u003c\/p\u003e\u003cp\u003eA 450mm diameter pier holds roughly 160 litres of concrete for every metre of depth. At about 10 litres of set concrete per 20kg bag, that is \u003cstrong\u003earound 16 bags per post, per metre of pier depth\u003c\/strong\u003e. So six posts set 1 metre deep is about 96 bags, and the same six posts at 1.5 metres is about 144.\u003c\/p\u003e\u003cp\u003eTwo things that move the number: the post itself displaces concrete, which works slightly in your favour, and a hole dug in loose or collapsing ground will take more than its nominal volume, which works against you. Check the yield printed on the bags you actually buy, because it varies between products, and order a few spare rather than stopping the pour.\u003c\/p\u003e\u003cp\u003eThe \u003ca href=\"\/pages\/retaining-wall-calculator\"\u003ewall calculator\u003c\/a\u003e does this for you from your wall length and height, alongside sleepers, posts and drainage.\u003c\/p\u003e\u003ch3\u003eBefore you dig\u003c\/h3\u003e\u003cp\u003ePier depth and diameter are design decisions, not defaults. Our rule of thumb is a pier depth equal to the wall height in a 450mm hole, which is deliberately conservative. Where your wall has an engineered design, use the pier in that design instead. The \u003ca href=\"\/blogs\/guides\/installing-steel-posts\"\u003esteel post installation guide\u003c\/a\u003e covers setting out, bracing and getting the lean back right before the concrete goes in.\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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7295\/5759\/collections\/Easy_Mix_Concrete.webp?v=1785886883","url":"https:\/\/hybuilt.com.au\/collections\/concrete-cement-bags.oembed","provider":"HYBUILT","version":"1.0","type":"link"}