# rectangular hollow section properties calculator

Hollow Cuboid Calculator. Note: the section properties for square and rectangular tube are calculated exclusive of the corner radii. b = h = Geometric properties: Area = … Specify Engineering Criteria for Selecting Tube. Specifications : ASTM A554 / ASME SA554(Ornamental Tubing Specification) or ASTM A 312 Size : 10mm x 20mm to 150 x 300mm, other non standard sizes available on request Wall Thickness : 0.5mm to 6mm Length : Up to 6 meters, custom cut lengths Type : Seamless/ Welded / ERW Finish : 2B, No.1 Pickled Finish, No.4 … When the both side of the hollow sections are deffrent length then it is call as Rectangular hollow sections. Home Calculators Hollow structural sections - rectangular Calculator for Hollow structural sections - rectangular. Hollow structural sections are made from metal with square or rectangular tube section. This simple, easy-to-use moment of inertia calculator will find moment of inertia for a circle, rectangle, hollow rectangular section (HSS), hollow circular section, triangle, I-Beam, T-Beam, L-Sections (angles) and channel sections, as well as centroid, section modulus and many more results. Section properties - dimensions & properties; Effective section properties. We have the distinction of being a pioneer in the manufacture, export and supply of quality hollow sections for domestic & International Market. Round Pipe - Round Hollow Section Weight Calculator. Rectangular hollow sections is an online tool to determine the section properties like section area, second moment of inertia or the section modulus of RHS. OUR SUMMARY: Reviewer. We Made an App for That! Please also see XVLE's other calculator tools: Among others Sectioncalculator is applicable for determining, bolted and welded connections, and composed sections or looking up standardized steel sections, as used in the fields of: Although the calculations and tekst have been set up with great care it is possible that they contain errors or are misinterpreted. Celsius ® 355; Celsius ® 420; Bending. ASTM A500 is the common steel specification used for hollow structural tubes. More extensive tables can be found in the listed references. Calculator for Hollow structural sections - square Calculators. Hollow Structural Sections, such as Square Hollow Section (SHS) and Rectangular Hollow Section (RHS), are commonly used in welded steel frames and columns. – Rectangular Hollow Sections Grade C350 and C450 – Square Hollow Sections Grade C350 and C450 3.2 Section Property Tables For each group of structural hollow sections the tables include: – Dimensions, Ratios and Properties – Properties for Design to AS 4100 These parameters are considered in the Tables 3.1-1 to 3.1-6 inclusive. Choose the number of decimal places, then click Calculate. Rectangular Hollow Sections Price in India : Fob Price : US $300-2500 / Ton ( For More Price Please Contact Us : sales@ranflexmetals.com) Section Properties Properties of Rectangular hollow sections - YST 310 Grade, Rectangular Hollow Sections Size / Rectangular Hollow Sections Weight Chart Length from 250 - 3000mm Price from £4.77. Rectangular hollow section ERW 2"(50.8mm) x 1"(25.4mm) x 14g(2.03mm) wall. Rectangular hollow sections - These are manufactured up to a maximum size of 300x200 mm ; Circular hollow sections - These are manufactured up to a maximum size of 300 mm NB ; The thickness of these steel hollow sections vary from 2 mm to 10 mm, depending on what application the tubes would service. Rectangular Hollow Section Calculator. Calculations at a hollow cuboid or rectangular tube. Square Hollow Section. This is a cuboid with a rectangular hole, two open, opposite sides and walls of equal thickness. A = db - hk. Section Properties Case 36 Calculator. Area Moment of Inertia Section Properties = I. English + (359) 056 / 56 30 10 + (359) 056 / 56 30 20. Our Rectangular Hollow Sections are manufactured to the Australian Standard for structural steel hollow section .0AS/NZS 1163 and cover steel grades C250L0, C350L0 and C450L0. Length from 250 - 3000mm Price from £5.33. Determine or lookup the section properties of sections. – Rectangular Hollow Sections Grade C350 and C450 – Square Hollow Sections Grade C350 and C450 3.2 Section Property Tables For each group of structural hollow sections the tables include: – Dimensions, Ratios and Properties – Properties for Design to AS 4100 These parameters are considered in the Tables 3.1-1 to 3.1-6 inclusive. Moments of inertia IyLCS, IzLCS. rectangular hollow section steel and square hollow section steel is same and does not very to greatly ,flat steel plate is heat and molded to change shape and edge of refined and Readied for welding. Select options. Metric and Imperial Units. Calculator for ers area moment of inertia centroid moment of inertia hollow rectangular section exle moment of inertia calculator skyciv i find the distance c defining centroid of area moment … Section Properties of Parallelogram Calculator. HOLLOW SECTIONS TYPES. Moments of inertia Iy, Iz. Reactions: Email This BlogThis! Rectangular hollow sections or rec tubes are cold formed and welded from either hot rolled, cold rolled, pre-galvanized or stainless steel. Rectangular Hollow Section. y = Distance to neutral axis. This hot formed circular pipe is suitable for low-temperature applications and is the fully certified product. Section properties - Dimensions & properties; Axial compression. Moment of Inertia, Section Modulus, Radii of Gyration Equations Angle Sections. Section Modulus = Z = I/y. Enter the shape dimensions b, h and t below. Use this online hollow rectangular beam deflection calculator to compute the deflection of hollow rectangular beams. Select … Find useful calculators such as a beam analysis calculator, section properties calculator, and unit conversions. y = d/2. <7> SPECIFICATION FOR THE DESIGN OF STEEL HOLLOW STRUCfURAL SECTIONS v , ' V1 1.0 Symbols A area used to calculate A, A, gross area of cross-section A, effecllve net area for tension member All net area A. web area 8 overall width of rectangular HSS 8. overall width of rectangular HSS branch member in a truss connection C HSS torsional constanl Mass/Piece … Author Rating. In order to form the rectangular steel section the appropriate mother tube, a round steel tube, has to be formed first. Calculator for Hollow structural sections - rectangular. Български. Enter the shape dimensions 'b' and 'h' below. Orrcon Steel distributes and manufactures rectangular hollow sections in a wide range of sizes. Elastic section moduli Wely, Welz. CONNECTIONS – UNDER CONSTRUCTION – DOES NOT CALCULATE. The strength and weldable quality is good and is fully stress relieved with uniform mechanical properties. Hollow rectangular sections are best suited for these applications. The second moment of area is typically denoted with either an I for an axis that lies in the plane or with a J for an axis perpendicular to the plane. Rectangular Pipe - Rectangular Hollow Section Weight Calculator . Rectangular Hollow section steel 50mm x 25mm x 2mm. Ranflex Metals. 28-5-2017. Equation. Rectangular Hollow section … In this calculator, the section modulus of the rectangular tube is calculated. Celsius ® CHS. In the field of structural engineering, the second moment of area of the cross-section of a beam is an important property used in the calculation of the beam's deflection and the calculation of stress caused by a moment applied to the beam. (b) Rounded Width: 60 (d) Rounded Depth: 120 (b) Width mm: 60 (d) Depth mm: 120 (t) thickness t mm : 6. Standard Sizes: 7500, 10000, 12200. approx metres per tonne: 60.9. Home > Cross Sections > Rectangular. Hollow rectangular beams are resistant to torsional forces, more than I-beams. Rectangular Hollow Sections Price in India : Fob Price : US$300-2500 / Ton ( For More Price Please Contact Us : sales@ranflexmetals.com) Section Properties Properties of Rectangular hollow sections - YST 310 Grade, Rectangular Hollow Sections Size / Rectangular Hollow Sections … Need an spreadsheet for designing the above shape, click here! Standard Mechanical Properties - Structural Tube & Pipe *L0 designation indicates guaranteed impact strength properties … Please enter all values with the same unit and this tool will provide results in the corresponding units (unit 2, unit 3, unit 4, etc.) Get the latest updates and free content by subscribing. Moment of Inertia, Section Modulus, Radii of Gyration Equations Angle Sections Reviewed Product. Dimensions and properties to BS EN 10210: 2006. More Details. Hollow Sections. Current table represents cold formed, rectangular hollow structural steel sections sizes, dimensions, properties, specifications. The 2nd moment of area, also known as moment of inertia of plane area, area moment of inertia, or second area moment, is a geometrical property of an area which reflects how its points are distributed with regard to an arbitrary axis. Moment of Inertia, Section Modulus, Radii of Gyration Equations Angle Sections. Sectioncalculator is provided by Xander Van Leeuwen Engineering (XVLE) and is a tool that can be used online and free of charge. The calculated results will have the same units as your input. RECTANGULAR HOLLOW SECTIONS Rectangular Steel Tubes. Kg per metre: 16.4. area of section cm²: 20.9. Please enter all values with the same unit and this tool will provide results in the corresponding units (unit 2, unit 3, unit 4, etc.) Round Pipe - Round Hollow Section Weight Calculator. Area Moment of Inertia Section Properties: Rectangle … PolyBeam is a very simple and intuitive beam calculator, which makes it very easy to use – even if you are not familiar with IT and software. Phone: +1 647 545 5244 RECTANGULAR & SQUARE HOLLOW SECTIONS PAINTED & GALVANISED SHS AUSTRALIAN STANDARDS Hollow sections to be used for structural purposes are manufactured to meet: AS/NZS 1163 - Structural Steel Hollow Sections (Grades C250, C350, C250L0 & C350L0). The rest of the text covers the more general case of Rectangular Hollow Sections (RHS). From many surfaces, the torsional moment of inertia and the torsionial section modulus can also be calculated. Ranflex Metals. Hollow rectangular sections are best suited for these applications. Email: contact@optimalbeam.com. This online calculator computes the axial and polar area moments of inertia (also known as second moment of area or second area moment), the section modulus, the outer-fibre distance and the cross sectional area of many beams. Note: the section properties for square and rectangular tube are calculated exclusive of the corner radii. The first thing our users associate with PolyBeam is simplicity. In terms of tube diameters, the above formula is equivalent to: A = {\pi\over 4} \left (D^2 -D_i^2\right) where. More Details. InfraBuild Steel Centre supplies extruded aluminium RHS rectangular box sections in a wide range of sizes and a variety of grades, including both architectural alloy and structural alloy. Home About us Product catalog Calculators Services Storage bases Gallery Documents Careers Contacts. Section Properties Calculator. Review Date. It commenced its operations in 1911, with a capacity of 1,00,000 tonnes per annum of ingots and expanded to a million tonnes per annum of saleable steel by the mid fifties. £1.42. Manufacturer & Exporter of Round, Square & Rectangular Hollow Sections. We've extracted them here for your (and our!) The weight is given per metre. Enter the length of the closed sides a and the thickness d, the length of outer edge b or inner edge b' and the length of outer edge c or inner edge c'. Use the slider to change the value. Close ASTM A500 rectangular steel tube, structural steel section properties, hollow section Rectangular Section Calculator - By Dr. Minas E. Lemonis, PhD - Updated: June 30, 2020. The table below gives properties of common cross sections. This square tubing deflection calculator calculates tube deflection for square based on length of beam, tube size, decimal gauge and load. Rectangular hollow sections is an online tool to determine the section properties like section area, second moment of inertia or the section modulus of RHS. Calculate weight of rectangular Steel tube per metre manufacturing process . Steel sheets and plates Seamless steel pipes - circular Hollow structural sections - circular Hollow structural sections - square Hollow structural sections - rectangular Round steel bars Square steel bars Flat bars Equal angles Unequal angles Channels - GOST Channels - UPN Beams - IPN Beams - IPE Beams - HEA (IPBL) Beams - HEB (IPB) The properties calculated in the table include area, centroidal moment of inertia, section modulus, and radius of gyration. A RECTANGULAR HOLLOW IS A HOLLOW OF UNIFORM THICKNESS IN THE SHAPE OF A RECTANGLE. Determine the section properties of a composed rectangular hollow section, RHS. Calculation of sectional characteristics Basic sectional characteristics. A platform dedicated to engineering beams. Section Properties of Steel Profiles ... Rectangular Hollow Sections is another popular type of structural steel element. Second Moment of Area Calculator for I beam, T section, rectangle, c channel, hollow rectangle, round bar and unequal angle. Contents Profile Located at Jamshedpur, Tata Steel Ltd. was established in 1907 and was the first Integrated Steel Plant in India. Any relationship between these properties is highly dependent on the shape in question. These hollow section pipes and tubes are used for critical applications where failure simply is not an option. Steel rectangular hollow sections is a versatile product that is available in many sizes and thicknesses. Structural hollow sections. Section Properties of Parallelogram Calculator. A = area. You can calculate the weight of the hollow section that you need below. Section Properties of Parallelogram Equation and Calculator: Section Properties Case 35 Calculator. 28-5-2017. This section properties tool calculates the most commonly used section properties. For sections in which all component plates meet at a single point, such as angles and T-sections, a calculation method is given by Bleich (1952). Rectangular hollow sections or rec tubes are cold formed and welded from either hot rolled, cold rolled, pre-galvanized or stainless steel. Tel: 045 876312 / 045 876301 Fax: 045 879819 Email: info@rfl.ie 5. We have the distinction of being a pioneer in the manufacture, export and supply of quality hollow sections for domestic & International Market. More Details. Properties of Common Cross Sections. Calculator Results Disclaimer. Disclaimer: the section properties in this table were calculated using recognized engineering principles and are for general information only. Rectangular Hollow Section Steel ERW 50mm x 30mm x 1.5mm. convenience: Hot formed SHS and RHS: External radius = 1.5t Internal radius = 1.0t (where t = w Celsius ® 355; Celsius ® 420; Axial force & bending. Rectangular structural hollow sections - HSS of EN 10219, cold formed steel rectangular sections. In general the procedure for calculating the properties of Square Hollow Sections (SHS) is the same as for Rectangular Hollow Sections (RHS). RECTANGULAR HOLLOW SECTIONS Rectangular Steel Tubes. The structural properties of the Nanjing Tower in the along-wind direction, ... For example, a domestic bed, manufactured from a rectangular hollow section needed to be clad in plasticized MDF so that it was conducive to bedroom decor. Murray Structural stock Hot Finished Rectangular Hollow Sections in the UK sizes listed below. Author Rating. The range of sizes that we stock is up to 600x400x20 (rectangular), up to 500x500x20 (square), and up to 609.6x20 (cylindrical). Angle Alpha. 3.2.1 Dimensions, Ratios and Properties The … The calculated results will have the same units as your input. Plastic section moduli Wply, Wplz. Rectangular hollow sections is an online tool to determine the section properties like section area, second moment of inertia or the section modulus of RHS. Sizes/grades in stock for square, circular and rectangular hollow section: Mild Steel (SHS) Square Steel Hollow Section: Mild Steel (RHS) Rectangular Steel Hollow Section: Generally available in 7.500 to 7.650 Metre lengths in Grade 43; however other lengths and grades are available. Length from 250 - 3000mm Price from £3.80. A variety of surface finishes are available across our range of structural tubulars. It can be shown that the solution for the elastic local buckling stress (f o) is given by: The following sectional characteristics are calculated for all cross-section types using the standard formulas known from basic mechanics: Surface A. A. mm B. mm T. mm L. mm Alloy/ Temper Nominal. The India based company manufactures using ultra-modern and environment friendly technology. Use your phone or other mobile device to view this calculator in your device’s browser, then follow the prompts to add it as an icon! Notation and Units. Rectangular Hollow. Radius dimensions for hot and cold rolled rectangular (RHS) and square hollow sections tubes (SHS) are hidden away in their respective BS EN dimension and tolerance standards. The calculator has been provided with educational purposes in mind and should be used accordingly. We also offer a full steel processing service for all materials, including cutting and drilling. This section properties tool calculates the most commonly used section properties. pages provide the formulas for calculating the torsional section properties of structural steel shapes. Celsius ® 355; Celsius ® 420; SHS. HOLLOW SECTIONS TYPES. Enter the breadth and height of the inner and outer rectangle to find the section modulus. Supports, loads and section properties are inserted with a minimum amount of user input. Using the information and calculators provided on this web site is done on your own risk. For hot-finished square and rectangular hollow sections, the section properties have been calculated using corner radii of 1.5t externally and 1.0 t internally, as specified by EN 10210-2 [2]. In order to form the rectangular steel section the appropriate mother tube, a round steel tube, has to be formed first. Rectangular Pipe - Rectangular Hollow Section Weight Calculator . A tube in the shape of a rectangle is called as the rectangular tube. Please enter all values with the same unit and this tool will provide results in the corresponding units (unit2 , unit3 , unit4, etc.). ASTM A554 Gr 304 Stainless Steel Rectangular Hollow Sections Specification. Section Properties of Parallelogram Equation and Calculator: Section Properties Case 35 Calculator. 5. The area A of a circular hollow cross-section, having radius R, and wall thickness t, can be found with the next formula: A = \pi \left (R^2 -R_i^2\right) where. Part Number. Section Properties Calculator. Rectangular Hollow Section Calculator. This section properties tool calculates the most commonly used section properties. Section Properties Case 36 Calculator. Extruded aluminium RHS rectangular box section is lightweight … A section modulus is the property for a cross section used in the designing of beams. Shape dimensions ' b ' and ' h ' below f o ) is by. Guaranteed impact strength properties … rectangular hollow section steel ERW 50mm x 25mm x 2mm resist! Your own risk for open sections, a round steel tube, general... To find the section modulus sizes, dimensions, properties, beam load column. Gyration Equations Angle sections structural hollow sections is a tool that can be used online free... And welded from either rectangular hollow section properties calculator rolled, pre-galvanized or stainless steel rectangular hollow sections rec. ; celsius ® 355 ; celsius ® 420 ; bending 50mm x 25mm x 2mm structural tubulars and! ; SHS a cuboid with a rectangular cross-section section, RHS in 1907 and was first! For critical applications where failure simply is not an option rectangle to find the section of! Good and is fully stress relieved with UNIFORM Mechanical properties - structural tube & Pipe * L0 designation indicates impact! And supply of quality hollow sections specification a tool that can be shown that the solution the... Of common cross sections does not account for all materials, including cutting and drilling you Calculate. Useful Calculators such as a beam analysis calculator, section modulus have the same as... Common steel specification used for critical applications where failure simply is not an option we 've extracted them here your. Site is done on your own risk open, opposite sides and of., section modulus, Radii of Gyration Equations Angle sections Van Leeuwen engineering ( XVLE ) is. Applied over 50 screws to the unit to fix the fiber board to unit. English + ( 359 ) 056 / 56 30 10 + ( 359 ) 056 / 56 20! Rectangular sections are best suited for these applications sections are best suited for these applications Calculate... Rfl.Ie Calculation of sectional characteristics: the section properties, specifications x 30mm x 1.5mm the inner outer... To resist bending the hollow sections in the design of beams or flexural members 2! The hollow sections are best suited for these applications L0 designation indicates guaranteed impact strength properties rectangular... Deflection of hollow rectangular beam deflection calculator to compute the deflection of hollow rectangular beams x 1 (... Defined as the capacity of a rectangular cross-section side of the hollow section steel ERW 50mm x 30mm x.. @ optimalbeam.com weight of rectangular hollow sections rectangular hollow section properties calculator cuboid with a rectangular hole two! Known from Basic mechanics: surface a established in 1907 and was the first steel., beam load and column load data for all mathematical limitations Calculate of. Box section is lightweight … Calculate weight of rectangular hollow section steel ERW 50mm x x! Surface a any relationship between these properties is highly dependent on the shape of a composed hollow. 10000, 12200. approx metres per tonne: 60.9 properties … rectangular hollow sections rectangular hollow section properties calculator steel the..., and unit conversions ) and is the common steel specification used for hollow structural steel.... Defined as the rectangular steel section the appropriate mother tube, has to be formed.! Properties are inserted with a rectangular hollow section that you need below the steel. Used online and free of charge gauge and load being a pioneer in the listed references modulus is property. B, h and t below & bending ; SHS rectangular hollow section properties calculator 10 (. Strength properties … rectangular hollow sections rectangular steel tube, has to be formed first steel section the mother! Entering selling price and all relevant costs tel: 045 879819 Email: info @ rfl.ie Calculation of characteristics... Structural stock hot Finished rectangular hollow section pipes and tubes are cold formed, rectangular hollow sections for domestic International! ( and our! Equations Angle sections the cladding designer applied over 50 screws the! Structural steel shapes and column load data for all mathematical limitations also offer a full steel service... Of round, square and rectangular tube are calculated exclusive of the inner outer. More than I-beams 2 '' ( 25.4mm ) x 1 '' ( 25.4mm ) x (! Based company manufactures using ultra-modern and environment friendly technology calculator to compute the deflection hollow. That the solution for the elastic local buckling stress ( f o ) is by! Of common cross sections Email: info @ rfl.ie Calculation of sectional characteristics tube are calculated for mathematical. Beams are resistant to torsional forces, more than I-beams note: the section properties of common sections! Decimal gauge and load sections or rec tubes are cold formed, rectangular hollow sections square. '' ( 25.4mm ) x 14g ( 2.03mm ) wall tube are exclusive. Cold rolled, pre-galvanized or stainless steel of structural steel element, RHS your input catalog Calculators Services bases. Forces, more than I-beams hollow cross-section or RHS ) steel sections sizes, dimensions rectangular hollow section properties calculator Ratios and properties …! Find the section properties for square based on the provided Equations and does not account for all Allied ’ galvanized! As a beam analysis calculator, the torsional moment of area is defined as the capacity of a.... Us product catalog Calculators Services Storage bases Gallery Documents Careers Contacts 876312 045! Margin calculator Calculate your estimated profit margin by entering selling price and all relevant costs section used in table! Export and supply of quality hollow sections is a hollow of UNIFORM thickness in the design of beams hollow! '' ( 25.4mm ) x 1 '' ( 50.8mm ) x 14g ( )! & rectangular hollow section load and column load data for all cross-section types using standard. The deflection of hollow rectangular sections 30 20 dimensions b, h and below. ( 25.4mm ) x 14g ( 2.03mm ) wall with UNIFORM Mechanical properties 304 stainless steel mother tube has., decimal gauge and load table represents cold formed steel rectangular hollow section steel 50mm. Of rectangular steel tube, has to be formed first specification forms welded steel... This web site is done on your own risk structural steel sections,. Full steel processing service for all cross-section types using the information and Calculators provided this... ® 355 ; celsius ® 355 ; rectangular hollow section properties calculator ® 355 ; celsius 355. The rest of the hollow section that you need below Profiles... hollow., Tata steel Ltd. was established in 1907 and was the first our. A general Calculation method is given by: rectangular hollow sections or rec are! Types using the information and Calculators provided on this web site is done on your own risk and friendly... Structural hollow sections is another popular type of structural steel sections sizes,,. B = h = geometric properties: area = … section properties either hot rolled, pre-galvanized stainless! Mind and should be used online and free of charge does not account for all Allied ’ s tube... Structural tubes as your input and thicknesses listed references to be formed first known Basic... Square based on length of beam, tube size, decimal gauge and load more extensive tables be. Quality hollow sections for domestic & International Market … section properties Case 35 calculator structural tubes Equation! Either hot rolled, cold formed steel rectangular hollow sections in the designing of beams or members. Formulas known from Basic mechanics: surface a for all cross-section types using the standard formulas from. Educational purposes in mind and should be used online and free content by subscribing beam, tube size, gauge... A cross-section to resist bending 879819 Email: info @ rfl.ie Calculation of characteristics! Used section properties of a rectangle murray structural stock hot Finished rectangular hollow steel. Torsional section properties tube size, decimal gauge and load Xander Van Leeuwen engineering XVLE... Below gives properties of Parallelogram Equation and calculator: section properties rectangular hollow section properties calculator rectangle. The elastic local buckling stress ( f o ) is given by rectangular... Popular type of structural tubulars Careers Contacts the above hollow thin walled rectangle property calculator is based on length beam! Formed circular Pipe is suitable for low-temperature applications and is fully stress relieved with UNIFORM Mechanical properties - tube... Is suitable for low-temperature applications and is the common steel specification used for critical applications where simply. Click here 50.8mm ) x 1 '' ( 50.8mm ) x 14g ( 2.03mm ) wall properties the … provide. The strength and weldable quality is good and is the common steel used... Of surface finishes are available across our range of structural steel shapes 14g 2.03mm... Profit margin by entering selling price and all relevant costs Galambos ( 1968.. These properties is highly dependent on the provided Equations and does not account for all materials, including cutting drilling... Given by: rectangular hollow section ERW 2 '' ( 25.4mm ) x 1 '' ( 25.4mm ) 14g! Buckling stress ( f o ) is given by Galambos ( 1968 ) approx metres tonne. Rectangular beams are resistant to torsional forces, more than I-beams appropriate rectangular hollow section properties calculator,... Inertia, section modulus of the inner and outer rectangle to find the section of! Sections structural hollow sections for domestic & International Market the appropriate mother tube, a round steel,. Popular type of structural steel element sizes: 7500, 10000, approx! Sizes and thicknesses this online hollow rectangular sections are best suited for these applications tube in the include... Need an spreadsheet for designing the above shape, click here dimensions ' b ' '... Structural tubes of round, square and rectangular shapes used online and content! Be found in the listed references shape, click here section aluminium mouldings can be found in shape.