From eabd2606a5a3682e53657557e34fa34e2a983812 Mon Sep 17 00:00:00 2001 From: Guus Date: Fri, 22 Mar 2024 11:55:42 +0100 Subject: [PATCH] Update variable loads --- .../variable_loads_1_buildings.ipynb | 72 ++++++++++++++++++- 1 file changed, 71 insertions(+), 1 deletion(-) diff --git a/book/design_workflow/general_loads/variable_loads_1_buildings.ipynb b/book/design_workflow/general_loads/variable_loads_1_buildings.ipynb index 04464ed..025f29b 100644 --- a/book/design_workflow/general_loads/variable_loads_1_buildings.ipynb +++ b/book/design_workflow/general_loads/variable_loads_1_buildings.ipynb @@ -12,7 +12,77 @@ { "cell_type": "markdown", "metadata": {}, - "source": [] + "source": [ + "Variable loads are loads which are not present during the whole lifetime\n", + "of the structure, or have variations in time which are not negligible.Examples\n", + "of variable loads are persons, goods, vehicles, wind, accumulating water,\n", + "earthquakes, collisions, loads during erection etcetera." + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Verticle and variable loads on floors and roofs\n", + "| Category | Distributed [$kN/m^2$] | Concentrated [$kN$] | Remarks |\n", + "|---------------------------------------|---------------------|-------------------|------------------|\n", + "| Category A: residential areas | | | |\n", + "| A - floors | 1.75 | 3 | |\n", + "| A - stairs | 2 | 3 | |\n", + "| A - balconies | 2.5 | 3 | |\n", + "| A - access routes | 2 | 3 | d |\n", + "| Category B: office areas | | | |\n", + "| B - floors | 2.5 | 3 | |\n", + "| B - access routes | 3 | 3 | |\n", + "| Category C: congregation areas | | | |\n", + "| C1 - floors | 4 | 7 | |\n", + "| C2 - floors | 4 | 7 | |\n", + "| C3 - floors | 5 | 7 | |\n", + "| C4 - floors | 5 | 7 | |\n", + "| C5 - floors | 5 | 7 | |\n", + "| C - access routes | 5 | 7 | |\n", + "| Category D: shopping areas | | | |\n", + "| D1 - floors | 4 | 7 | |\n", + "| D2 - floors | 4 | 7 | |\n", + "| D - access routes | 4 | 4 | |\n", + "| Category E: storage areas | | | |\n", + "| E1 - floors - shops | ≥5 | ≥7 | e |\n", + "| E1 - floors - libraries | ≥2.5 | ≥3 | a,e |\n", + "| E1 - floors - other | ≥5 | ≥10 | e |\n", + "| E2 - floors | depends on use, | depends on use, | |\n", + "| | but ≥3 | but ≥7 | |\n", + "| E1 - access routes - libraries | 3 | 3 | |\n", + "| E1 - access routes - other | 4 | 4 | |\n", + "| E2 - access routes | 4 | 4 | |\n", + "| Category F: traffic area (light) | | | |\n", + "| F - floors | 2 | 10 | e |\n", + "| Category G: traffic area (heavy) | | | |\n", + "| G - floors | 5 | 40 | e |\n", + "| Category H: roofs | | | |\n", + "| dependend of roof angle | | | a: |\n", + "| - 0 ≤ a ≤ 15 | 1 | 1.5 | b,c,f |\n", + "| - 15 ≤ a ≤ 20 | 4 - 0.2a | 1.5 | b,c,f |\n", + "| - 20 ≤ a | 0 | 1.5 | b,c,f |\n" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "a The given value needs to be applied between the shelves. Underneath the shelves the following formula needs to be applied: \n", + "   $q_k = (A_1*γ_{bk}*h+A_2*p_0)/(A_1+A_2)$ \n", + "   Where: \n", + "   $A_1$: Area beneath the shelves [$m^2$] \n", + "   $A_2$: Remaining area [$m^2$] \n", + "   $γ_{bk}$: Dead weight of books: 6 [$kg/m^3$] \n", + "   $p_0$: Action on floors between shelves: 2,5 [$kN/m^2$] \n", + "   $h$: Height of the shelves \n", + "b The concentrated load is applied on a surface of $0,1 * 0,1 m^2$ \n", + "c The distributed load acts on a maximum area of $10 m^2$ \n", + "d Applied over an area of $0,5* 0,5 m^2$ \n", + "e Take impact loads into account \n", + "f Take water accumulation into account\n" + ] } ], "metadata": {