Architectural Drawing - St. Francis Preparatory School

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Architectural DrawingArchitectural Symbols andConventions


Door symbols

Window symbols

Other symbols

Other symbols

Building Materials Symbols

Topographic Symbols

Text and Layout

Architectural Symbols and ConventionsTitles All entities on a drawing must have a title whether it is a plan view, elevation, section, detail, etc.Titles are lettered large enough catch the viewers eye. Generally the lettering is between 3/16" and 1/2" high. To accent the titles even more they are underlined. Underlining can consist of a single line, a double line, or a combination of thick and thin lines. The underlining can be centered with the lettering, be flush, or be broken

Architectural Symbols and ConventionsSection MarksThe arrow can be left open or colored in. The short line segments extending from the circlerepresent the cutting plane line.BA-5BA-5BBBA-5A-5A-5BA-5Generally a section call-out consists of two circles, one on each end of the cuttingplane line. It is permissible to omit one of the circles and replace it with a simplearrow. These arrows are simple and can be left open or colored in.

Title Block

Architectural Symbols and ConventionsTitle BlocksTitle blocks are a very important part of the overalldrawing. They contain information not given directly onthe drawing with dimensions or notes.

Architectural Symbols and ConventionsTitle BlocksLettering should be simple and conform to the overall lettering style of the drawing. Lettering can beproduced with templates, stencils, or simply freehand with guidelines. The heights of the lettering should follow in accordance with their relative importance. The drawing number should receive the greatest emphasis and have a height greater than 1/4". The drawing name, title of the project, clients name, and the name of the architectural companyshould follow with a letter height of 3/16". The addresses, the date, and the scale should have a letter height of 1/8". Incidental words like DATE and SCALE should receive the least emphasis and have a letter heightof 1/16".The lettering in the title block should be either centered or have a flush margin. Variations in thelettering heights adds an overall pleasing affect to the drawing and breaks up the monotony of a linedrawing.

Title BlockThe following information isgenerally provided in thetitle block: Title of the project/name of thedrawing Name and address of the client. Name and address of the architecturalcompany. Date of the completion of the drawingpackage. Scale of the drawing. Drawing Number, identifying the groupand order to which it belongs. Architect's professional stamp. The initials of the draftsperson.

Registration StampHomework:Design your ownRegistration Stamp

Architectural Symbols and ConventionsSheet Layout The drawing paper need to be framed with aborder line. A 1/2 inch border line is drawnaround the paper. This line is a very thickline. The border line can be a single line or adouble. Title blocks are added and placed along thebottom and/or the right side of the drawingpaper. A north arrow (if applicable) is placed in theupper left corner of the sheet.The main drawing should be the dominatepicture on the sheet with detail drawings andgeneral notes related to the main drawingplaced around it. All drawings, details, and notes should betitled. Titles are placed beneath the picture.

Architectural Symbols and ConventionsArchitectural Drafting Line WorkArrowheads are drawn freehand. The length of an arrowhead is the same dimension used forthe height of lettering. The proportion of the length of the arrowhead to the width is 3:1respectively. Arrowheads can be either open, closed, solid, or the traditional slash as shown.Other types of symbols can be used in place of the arrowhead or slash. These include triangles,perpendicular lines, and dots.In all cases, the style of arrowheads should not be mixed on a drawing. Consistency is the keyto good drafting.OPENCLOSEDSOLIDSLASH

Architectural Symbols and ConventionsDimensioningThe dimension line is a continuous, unbroken line with the dimension figure placed above theline.Never place the dimension figure below the dimension line.In spacing the dimension lines, the first dimension line should be a minimum of 1/2" away fromthe object. All successive dimension lines should be spaced a minimum of 3/8" away from eachother.Text heights for notes, dimensions and general drafting is 3/32”.16'-0"

Architectural Symbols and ConventionsPocheBuildings in PlanThe simplest way to highlight a structure is tocrosshatch the entire building area or hatcharound the perimeter of the structure. Theoverall representation of the structure shouldconform to the overall style of the drawingand the other symbols used.

Correct drafting mehtods


Lines and Symbols

Line Types

Architectural Drafting Line Work Arrowheads are drawn freehand. The length of an arrowhead is the same dimension used for the height of lettering. The proportion of the length of the arrowhead to the width is 3:1 respectively. Arrowheads can be either open, closed, solid, or the traditional slash as shown. Other types of symbols can be used in place of the arrowhead or slash. These include .

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