As nouns the difference between floor and ground is that floor is the bottom or lower part of any room; the supporting surface of a room while ground is (senseid)(uncountable) the surface of the earth, as opposed to the sky or water or underground. It is mandatory to procure user consent prior to running these cookies on your website. out the requirements for suspended floors. These days most homes are designed with concrete floors because damp proofing technology allows us to create a dry floor without an air gap. How to insulate suspended timber floors. These gaps may occur around pipes. These cookies will be stored in your browser only with your consent. If you can hear your neighbours easily and smells travel between flats then there is a possibility that there are gaps between ceilings and floors above that will also allow smoke through in case of fire. The insulation must be strong and waterproof. “Ground Floor” is just above GL & “ Basement Floor” is constructed below GL in one basement of a building. The phrase “ground floor,” of course, refers to the floor of a building closest to the ground. There are still be many suspended floors out there however, because retrofitting them is prohibitively expensive and often impractical. Suspended slab formwork and rebar in place, ready for concrete pour. Suspended concrete floors Typical block and beam floor Quick and cheap to install Inverted ‘ T’ shaped beams Concrete blocks placed in between them 7. This allows air flow and ventilation to prevent the mould and dry rot that would otherwise occur over damp ground. Raising the floor level up above the ground acts as a barrier to damp coming up from the ground. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Air bricks through the outer walls, facilitate air movement. But opting out of some of these cookies may affect your browsing experience. These cookies do not store any personal information. Floor is a see also of ground. In this blog, we are going to look at some of the implications of this type of house. NZS 3604 sets a minimum height above ground for wood-based products used for flooring. Hi, the house is Edwardian with the floors suspended on concrete/brick pillars and wooden joist of 150mm width. As verbs the difference between floor and ground is that floor is to cover or furnish with a floor while ground … A suspended timber floor on bearer's and joist's can sometime's be comparable cost wise on a flat site but is better suited if there's quite a bit to significant fall on the site. Because both the upstairs and downstairs are being heated, there is no heat transfer between levels and therefore no energy saving to be made. Difference Between : - Floor: - A floor is the walking surface of a room . There are various pros and cons to these types of floor, some of which impact on the energy efficiency of the building and how you go about insulating them. You also have the option to opt-out of these cookies. Temporary Roof & Floor Holes, Wall Openings, Stairways Safety Requirements for, & Other Unprotected Edges in Construction & Demolition Operations. This type of concrete slab construction requires different concrete slab design from the one we normally see that is cast on the ground. It is not possible to lay insulation underneath a solid floor, so any insulation will need to go on top. The answer to this is that it really depends on the reason for insulating. Do you have a different opinion? Buy our books at a local store, Amazon.com, or Barnes&Noble.com. In a structural concrete slab, the thickness of the slab is not a factor in determining the load carrying capacity of that slab. There are a few ways to insulate a suspended floor, but the best, most breathable way is to hang insulation under the floorboards. This website uses cookies to improve your experience while you navigate through the website. Suspended slabs differ from non-suspended slabs because they are suspended above the ground via beams. Suspended ground floors – where the slab is supported on beams and/or loadbearing sleeper walls and is not in direct contact with the ground. Because of this cost, it is usually not worth it to insulate your floors. Timber floors were originally designed to prevent damp. Type 1: Suspended Floors Suspended timber floors are normally made up of timber joists Requires machinery to lift heavy beams Advantages: 1. If I find out anything more, I’ll put it on the blog, so stay tuned! A solid Floor is much simpler and cheaper. Because the Floor is suspended above the ground, it should absorb less moisture than a solid floor. © Copyright 2006-2020 practicalDIY.com - All rights reserved. Suspended timber floors need to have spaces underneath ventilated via air 'bricks' through the outer walls and gaps in any internal walls so that the air can move across the building underneath the floors to prevent the build up of moisture in the timber which could lead to fungal attack. We often get asked whether you should insulate floors between levels, as well as the ground floor. The Old Engineer says: A beam on an elastic foundation (“slab on grade”) must be designed to withstand the maximum bending moment. You can also insulate from above using a similar method to a concrete floor, but a breathable insulation must be used along with a breathable membrane to ensure that the timber can breathe. Save my name, email, and website in this browser for the next time I comment. Suspended concrete slab is referred to a cement slab that is not in contact with the ground. Such floors are named as 1st Floor, 2nd Floor and so on (in ascending order). Unlike standard ground floor construction, suspended floors are not sitting directly on the ground. Floors vary from simple dirt in a cave to many-layered surfaces using modern technology. a "floating" floor has been installed; Gaps between flats. If there is extensive refurbishment work happening however, it may be a good time to look at floor insulation. Non-suspended slabs sit directly on the ground. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It consists of solid concrete built into the ground. 2. It rests on beams spanning between supporting walls. The cross-sectional area of the steel is inserted into engineering formulae found in ACI 318 to determine the load carrying capacity for a given slab design. 1. Learn more about construction procedure with video explanation. There are a few ways to insulate a suspended floor, but the best, most breathable way is … A: A structurally reinforced slab-on-ground uses a composite of concrete and structural steel to support the design load. Suspended Floor Suspended Floor: A suspended floor is one that is suspended above the ground. The ply spanned two/three joists and screwed down every 8-9 inches. Fig 2 shows the side view of the sleeper walls with the bricks arranged to allow air movement. Floor levelness (F L) controls the departure of the floor surface from the specified slope or plane of the surface. Floor insulation can get expensive, simply because how disruptive it is. Quick to construct 2. So we will discuss Concrete or Timber floor systems. Unfortunately, a consequence of this is that the floors can be quite draughty, with air bricks required to keep the timber dry. Slabs are also use to construct the floors which are known as the ‘floor slabs’. The cost will vary quite drastically depending on the complexity of the job and how much of a knock-on effect it is going to have, but you can be sure that most homes will cost thousands of pounds to retrofit. Cold ground floors Beam and Block for Ground and Upper Floors Beam and Block for Ground Floors. Those with a Victorian home who have dared to look below the ground floor decking will notice that, in many cases, all that’s below is dirt. More expensive 2. Ground : - Ground may refer to Earth's surface where the floor is build up. By continuing to use our website you agree to our Data Protection Policy, which you can view, From None to Current Building Regulations (Electric Heating). Solid floors are a lot more substantial and require the ground to be made up in layers of ground sub base, sand, compacted hard core, damp proof membrane, insulation and concrete. Block and beam floors are a very popular type of suspended floor. Upgrading floors changes the void conditions, which might increase or decrease moisture build-up and mould and fungal growth. It’s easier to run wires under the floorboards of a suspended timber floor, and because it doesn’t touch the ground, it will absorb less moisture from the earth so it limits structural damage from damp which is a benefit if your home is in an area with poor drainage. NZS 3604:2011 has two options for the lateral support at the ends of floor joists for a suspend-ed floor on a pile foundation (see Figure 1a): A boundary joist 25 mm thick and the same depth as the joist. From a thermal comfort perspective, it does appear that feet are particularly sensitive to colder temperatures, so addressing floor draughts can help improve comfort levels. The slabs needs to be of low conductivity material, so that the thickness of the insulation can be reduced. In older properties (pre 1910), air bricks were not always fitted - in such properties, they should be retro fitted where possible. ... Safety Requirements for Work Platforms Suspended from Cranes or Derricks. There are two different types Supported slab on grade and monolithic slab on grade. A stepped air brick is shown just to illustrate an alternative to the straight style illustrated in Fig 1 - there's no advantage in either type although the stepped style may be required if there is a high external ground level. Different types of ground floor suspended flooring . Some types of concrete slabs may be more suitable to a particular site and climate zone than others. Structural steel may be rebar or WWF. However this air flow can leave the problem of draughts and cold in the house if not insulated correctly. ANSI/ASSP A10.31-2019 Safety Requirements, Definitions and Specifications for Digger Derrick. The savings are actually fairly modest compared to insulating other parts of the home, like the walls and loft. “ Upper/Suspended Floor” is any floor above the GL except the terrace or roof of building. E2/AS1 gives minimum heights of finished floor levels above ground for concrete slab floors and suspended timber floors, the measurements depending on whether there is grass or paving outside. Ground Supported floors Solid ground of hardcore supports concrete floor Thick damp proof membrane placed under concrete with a layer of insulation Typical slab – 150mm with reinforcement Suspended slab may be the most expensive compared to … Any timber suspended floor should have insulation between the joists, in England and Wales the 2014 requirement was a U value of 0.11W/m2K for new build, 0.25W/m2K for refurbishments. Suspended floors are normally made up of 2 materials, either timber joists or a concrete beam system. However, where the space between the concrete base and the floor is greater than 45cm, Fig 3 shows an alternative arrangement where the joists are supported in the inner wall, the size of joists is dependant on the span of the floor and there will be a limit on the span that can be accommodated but this is unlikely to cause an issue in a domestic property. We also use third-party cookies that help us analyze and understand how you use this website. Your email address will not be published. In recent years the use of suspended concrete floors has become common place normally in the commercial sector, but to a lesser degree, even in upper floors of domestic dwellings. However, it is important to note that the cavity between the concrete slab and the timber floor needs to be ventilated well or dry rot may occur. However, it is unknown what the floor void conditions are, nor the effect of insulating such floors. That’s not acceptable these days and the need for a solid concrete oversite is one of the main reasons for this type of flooring system falling out of favour. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Would you consider concrete slabs suspended as it will have positives of both builds. 26 Disadvantages: 1. 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