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Fredrik Lagerström 26.1 5 [[image:92874_-_britain_flag_great.png]][[[[image:92992_-_flag_spain.png]]>>Hollowcore Online (App) (ES)]][[[[image:92997_-_flag_sweden.png]]>>Hollowcore Online (App) (SE)]]
Fredrik Lagerström 24.1 6
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Fredrik Lagerström 18.1 9 = Introduction to Hollowcore Online =
Fredrik Lagerström 1.1 10
Fredrik Lagerström 18.1 11 Calculate your flooring requirements and find the best hollowcore supplier for your project.
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13 Based on the load/span requirements of your project, hollowcore online can calculate and suggest suitable slab profiles.
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15 You can then download a dxf file of the selected profile to assist with your design.
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17 Using the map below the calculation tool, you can discover selected members of hollowcore online, helping you to find the right supplier based on your location.
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19 Contact details and a link to our members’ websites can be found by clicking on the map markers.
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21 Link to the application: [[Hollowcore Online>>https://hollowcore-online.strusoft.com/]]
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Fredrik Lagerström 1.1 23 = Graphical user interface (GUI) =
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Fredrik Lagerström 4.1 25 * Top menu bar
26 * Main window
Fredrik Lagerström 17.1 27 * [[Span width>>Span width (Hollowcore Online)]]
Fredrik Lagerström 4.1 28 * Load type
29 * Capacity-graph
30 * Company selector
Fredrik Lagerström 7.1 31 * Cross section properties
Fredrik Lagerström 4.1 32 * Map
Fredrik Lagerström 1.1 33
Fredrik Lagerström 19.1 34 = Hollowcore flooring calculation guide =
Fredrik Lagerström 1.1 35
Fredrik Lagerström 19.1 36 Instructions for use:
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38 ~1. Enter Span – this is the [[distance between supports>>doc:.Span width (Hollowcore Online).WebHome]] which the hollowcore slab must span.
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40 2. Select Load Type – select the eventual use of your project for a simplified total load the hollowcore slabs will typically be exposed to.
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42 3. Click the “Calculate” button, or alternatively, select (by left clicking) a manufacturer near you using the map, and click the “Calculate” button on the information card.
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44 == Results ==
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46 You will be presented with a drop-down menu to a select supplier that manufactures a slab suitable for your project.
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48 For each manufacturer selected, you’ll see a hollowcore section matched to your requirements. The information provided includes a typical load/span table and properties for the section, such as load capacity and load utilization. You also have the option to cycle through all the manufacturer’s profiles using the “Previous” and “Next” buttons.
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50 You can download a drawing of the slab profile selected by clicking on the button labelled “Dxf”.
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52 = Hollowcore producers / Map user guide =
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55 A red dot marks your current location, with map marker pins showing hollowcore producing members of hollowcore online.
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57 The map can be moved by left-clicking and dragging, and zoomed in or out using the “+/-“ buttons in the top left.
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59 By clicking on a marker pin, you can bring up a profile card for that member, with the option to visit their website and perform a calculation based on the slab sections they manufacture.
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Fredrik Lagerström 15.1 61 == [[List of producers with calculable profiles>>Hollowcore Online (App).Producers with calculable profiles (Hollowcore Online).WebHome]] ==
Fredrik Lagerström 1.1 62
Fredrik Lagerström 14.1 63 == [[List of other producers that are represented on the map>>Hollowcore Online (App).Other producers (Hollowcore Online).WebHome]] ==
Fredrik Lagerström 1.1 64
Fredrik Lagerström 11.1 65 = (% style="font-family:inherit; font-size:29px" %)Calculation(%%) =
Fredrik Lagerström 1.1 66
Fredrik Lagerström 27.1 67 For these results the maximum number of prestressing wires has been used. There will be a future update when the capacities will be lower, since one wire will be removed from the calculations, meaning that n-1 wires will be used for maximum values.
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Fredrik Lagerström 2.3 69 The calculations are being performed according to EN 1990 formula (6.10b)
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Fredrik Lagerström 2.5 71 1.2 x G,,k,, + 1.5 x q,,k,,  (6.10b)
Fredrik Lagerström 2.3 72
Fredrik Lagerström 16.1 73 __No extra deadload except the dead load of the element is considered.__ For calculations with structural topping or screed, consult a calculation that takes that into account (for example StruSoft PRE-Stress)
Fredrik Lagerström 2.3 74
Fredrik Lagerström 7.1 75 Imposed live load types according to EN 1991-1-1
Fredrik Lagerström 2.3 76
Fredrik Lagerström 2.5 77 (% border="1" class="table-hover" style="width:680px" %)
78 |=(% style="background-color: rgb(0, 118, 203); width: 94px; text-align: center;" %)(% style="color:#ffffff" %)Category|=(% style="background-color: rgb(0, 118, 203); width: 461px;" %)(% style="color:#ffffff" %)Load type|=(% style="background-color: rgb(0, 118, 203); width: 151px; text-align: center;" %)(% style="color:#ffffff" %)Value (q,,k,,)
79 |(% style="text-align:center; width:94px" %)A|(% style="width:461px" %)Domestic and Residential (Floors)|(% style="text-align:center; width:151px" %)2.0 kN/m^^2^^
80 |(% style="text-align:center; width:94px" %)A|(% style="width:461px" %)Domestic and Residential (Stairs)|(% style="text-align:center; width:151px" %)2.0 kN/m^^2^^
81 |(% style="text-align:center; width:94px" %)B|(% style="width:461px" %)Office Areas Buildings|(% style="text-align:center; width:151px" %)3.0 kN/m^^2^^
82 |(% style="text-align:center; width:94px" %)C1|(% style="width:461px" %)Congregation Areas Buildings (Room with tables)|(% style="text-align:center; width:151px" %)3.0 kN/m^^2^^
83 |(% style="text-align:center; width:94px" %)C2|(% style="width:461px" %)Congregation Areas Buildings (Room with permanent seats)|(% style="text-align:center; width:151px" %)4.0 kN/m^^2^^
84 |(% style="text-align:center; width:94px" %)C3|(% style="width:461px" %)Congregation Areas Buildings (Room for transportation)|(% style="text-align:center; width:151px" %)5.0 kN/m^^2^^
85 |(% style="text-align:center; width:94px" %)C4|(% style="width:461px" %)Congregation Areas Buildings (Room for physical activities)|(% style="text-align:center; width:151px" %)5.0 kN/m^^2^^
86 |(% style="text-align:center; width:94px" %)C5|(% style="width:461px" %)Congregation Areas Buildings (Room for large crowds)|(% style="text-align:center; width:151px" %)5.0 kN/m^^2^^
87 |(% style="text-align:center; width:94px" %)D1|(% style="width:461px" %)Shopping Areas Buildings (Areas for retail stores)|(% style="text-align:center; width:151px" %)4.0 kN/m^^2^^
88 |(% style="text-align:center; width:94px" %)D2|(% style="width:461px" %)Shopping Areas Buildings (Areas for department stores)|(% style="text-align:center; width:151px" %)5.0 kN/m^^2^^
89 |(% style="text-align:center; width:94px" %)E1|(% style="width:461px" %)Storage Areas Buildings|(% style="text-align:center; width:151px" %)7.5 kN/m^^2^^
90 |(% style="text-align:center; width:94px" %)F|(% style="width:461px" %)Vehicles (Up to 30kN)|(% style="text-align:center; width:151px" %)2.5 kN/m^^2^^
91 |(% style="text-align:center; width:94px" %)G|(% style="width:461px" %)Vehicles (Between 30kN and 160kN)|(% style="text-align:center; width:151px" %)5.0 kN/m^^2^^
92 |(% style="text-align:center; width:94px" %)H|(% style="width:461px" %)Roofs|(% style="text-align:center; width:151px" %)1.0 kN/m^^2^^
Fredrik Lagerström 2.3 93
Fredrik Lagerström 11.1 94 = Designing calculation =
Fredrik Lagerström 7.1 95
96 (% class="wikigeneratedid" %)
Fredrik Lagerström 7.2 97 If the Shear calculation is governing then ULS_V is shown after the maximum allowed characteristic imposed load value (q,,k,max,,).
Fredrik Lagerström 7.1 98
99 (% class="wikigeneratedid" %)
Fredrik Lagerström 7.2 100 If the Moment calculation is governing, then ULS_M is shown.
Fredrik Lagerström 7.1 101
Fredrik Lagerström 7.2 102 (% border="1" %)
103 |[[image:1612359605516-560.png]]|[[image:1612359509442-900.png]]
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Fredrik Lagerström 4.1 105 = Cross section properties =
Fredrik Lagerström 2.3 106
Fredrik Lagerström 7.2 107 Shown values are:
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109 * The span length
110 * Characteristic maximum allowed imposed live load
111 * Current imposed characteristic live load
112 * Utilization
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Fredrik Lagerström 2.3 114 The calculated cross section is available to download as a Autodesk dxf-file (Drawing Exchange Format)
Fredrik Lagerström 8.1 115
Fredrik Lagerström 27.1 116 = Future development =
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118 The development is paid for by the participating companies. In the list of development ideas are:
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120 * Calculations should be performed with n,,max ,,- 1 wires, since there are curently no room for errors in the design process, or possibility to have any holes that will reduce the capacity.
121 * Extra dead load
122 * Eigenfrequency-calculations
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124 This list is always considered when doing new development. Contact a company that has their products presented and they will contact StruSoft for your new idea!
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Fredrik Lagerström 8.1 126 = Limitations =
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128 The applications makes a preliminary design of the different cross sections with a given imposed load.
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130 The calculation does not take the following parameters into account:
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Fredrik Lagerström 20.1 132 * Serviceability effects
133 ** Cracking
134 ** Deformation
135 ** Stress limitations
136 ** Eigenfrequencies
137 ** Transportation, lifting, and storing the elements
Fredrik Lagerström 8.1 138 * Long term effects (Creep, Shrinkage, Relaxation)
139 * Fire
140 * Curing of the concrete in early stages
141 * Torsion
142 * Recesses and holes causing reduced capacities
Fredrik Lagerström 16.1 143
144 The properties above will be taken into account if a calculation is being performed by PRE-Stress. There are a few parameters that are not taken into account in Hollowcore Online or PRE-Stress:
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146 * Sound insulation / noise transported in a structure.
147 * LCA, Life Cycle analysis. Impact on the environment
148 * Cost estimations, as that is up to each supplier to provide for each project tender
Fredrik Lagerström 1.1 149 )))
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155 **Contents**
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157 {{toc/}}
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Copyright 2020 StruSoft AB
PRE-Stress Documentation