On The Ground Floor - Cement Sheet Flooring - Schon Quick Clic Flooring Reviews
A simple method for estimating transient heat transfer in slab-on-ground floors [An article from: Building and Environment]
This digital document is a journal article from Building and Environment, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.78% (18)
The problem of calculating transient heat transfer in concrete floor slabs is complicated due to ground coupling, which can require the numerical solution of two or three-dimensional transient conduction equations. This paper presents a simplified method for calculating transient slab-on-ground heat transfer that can be incorporated within hourly simulation programs. The method assumes that there are two primary one-dimensional paths for heat transfer from a ground-coupled floor slab: (1) one-dimensional heat transfer from the perimeter of the slab to the ambient and (2) one-dimensional heat transfer between the slab interior surface and a portion of the soil beneath the slab. The perimeter heat transfer is assumed to occur at quasi-steady state and is characterized in terms of a perimeter heat loss factor (F"p). Transient heat transfer within the slab and ground are modeled using a simple thermal circuit employing three nodes with an adiabatic boundary condition at a specified depth within the soil underneath the slab. Although some simulation models consider this type of two-path model, there appears to be no validation of this approach and there is no guidance for specifying perimeter heat loss factors and underfloor soil depths and node locations for the thermal circuit. In the current paper, results from detailed two-dimensional finite-element models for typical floor constructions and soil properties were used to identify (1) locations for nodes within the slab and soil, (2) correlations for soil depth as a function of soil properties associated with the underfloor adiabatic boundary condition, and (3) correlations for perimeter heat loss factor as a function of soil properties and edge insulation levels for different constructions. Transient heat transfer results from the simple model compared well with results from the finite-element program for different floor constructions, edge insulation, soil properties, locations, and times of year.
On the ground floor...
Ok, I know that if you're reading the description on more than one of the photographs in this set, you must get the impression that I don't like Quartermile... But, on the whole, I do - it's just parts of it seem extraordinarily badly designed. So, here we go with another gripe: in 'dem olden days', we used to build ground floor flats that had a bit of space between them and the pavement. Sometimes we even built them slightly raised above ground level, to ensure a little privacy. Now it seems we put floor-to-ceiling windows about 1.5 metres from a pavement, and plant a wall of bamboo to do the same. Needless to say, almost everyone who lives in Quartermile keeps their blinds down when at home... That's not 'architecture'. Only on purely residential side streets, or perhaps more industrial parts of the city do tenements have flats this close or on the pavement - none of which are in the same price league as those on offer here, in the middle of a mixed-use site. And none, of course, deliberately designed with floor to ceiling windows. The only price-comparable flats, in the New Town, have either steps up or down, and are set well back from the pavement... It would have been nice to have seen a true mixed-use site - not just completely separate blocks for separate uses (yawn) - these ground floor units would have made ideal offices or retail units for example. What's that I hear you say?! "Just like tenements found on streets throughout the entire city?". Yes. Exactly. Has no-one from Foster & Partners, CDA or Gladedale ever bothered to look at how urban design has functioned in Scottish cities over the last two centuries? It can't just have been because of developer concerns as it seems to have worked perfectly well on the only truly mixed-use building on the entire site - Veridian, which faces Middle Meadow Walk. Although this pavement is a veritable backwater at present, once the site is complete, this will be the main east-west thoroughfare. I don't rate the long-term value of these ground floor properties very highly...Floor Plan Ground Floor
Here is the second piece of design work for a Lego model of the toy shop I work in that I intend building. This is a quick, basic floor plan for the ground floor, each square being one of the floor tiles in the shop that I'm using as a measure to guestimate the sizes of everything. Unfortunately, the floor tiles are closer to 1.5 studs when scaled down at a guess. Certainly 2 x 2 studs make the doors look too wide, so the final size will be a bit narrower than it looks on here.
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