// Numbas version: exam_results_page_options
{"name": "Timber Beam", "extensions": [], "custom_part_types": [], "resources": [["question-resources/Timberbeam.png", "/srv/numbas/media/question-resources/Timberbeam.png"]], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Timber Beam", "tags": [], "metadata": {"description": "<p>simple design problem.</p>", "licence": "All rights reserved"}, "statement": "<p></p>\n<p><img src=\"resources/question-resources/Timberbeam.png\" width=\"673\" height=\"234\"/></p>\n<p>A timber beam is simply supported and has a span l = {span_l} meters. It has&nbsp;a rectangular cross section with width b = {width_b} millimeters. The height of the beam in milimeters must be chosen such that the beam sustains the loads q = {disload_q} kN/m and G = {sinload_G} kN. The timber bending strength is given with {strength_f} MPa.</p>", "advice": "<p>Solution comes here...</p>", "rulesets": {}, "extensions": [], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"span_l": {"name": "span_l", "group": "Ungrouped variables", "definition": "random(8 .. 20#1)", "description": "<p>The span of the beam.</p>", "templateType": "randrange", "can_override": false}, "width_b": {"name": "width_b", "group": "Ungrouped variables", "definition": "300", "description": "", "templateType": "number", "can_override": false}, "disload_q": {"name": "disload_q", "group": "Ungrouped variables", "definition": "random(2 .. 4#0.1)", "description": "", "templateType": "randrange", "can_override": false}, "sinload_g": {"name": "sinload_g", "group": "Ungrouped variables", "definition": "random(5 .. 20#1)", "description": "", "templateType": "randrange", "can_override": false}, "strength_f": {"name": "strength_f", "group": "Ungrouped variables", "definition": "24", "description": "", "templateType": "number", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["span_l", "width_b", "disload_q", "sinload_g", "strength_f"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": true, "customName": "Design", "marks": "2", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What is the minimum height of the beam in Millimeters?</p>", "minValue": "-2+sqrt((0.125*disload_q*(span_l*1000)^2+0.25*sinload_g*1000*span_l*1000)*6/(strength_f*width_b))", "maxValue": "2+sqrt((0.125*disload_q*(span_l*1000)^2+0.25*sinload_g*1000*span_l*1000)*6/(strength_f*width_b))", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "displayAnswer": "sqrt((0.125*disload_q*(span_l*1000)^2+0.25*sinload_g*1000*span_l*1000)*6/(strength_f*width_b))", "precisionType": "dp", "precision": 0, "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": true, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "contributors": [{"name": "Jochen K\u00f6hler", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/19474/"}]}]}], "contributors": [{"name": "Jochen K\u00f6hler", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/19474/"}]}