Block libraries templates

The CAD equivalent of drawing templates is the block library. Dedicated architectural CAD programs will come complete with their own 2D and 3D block and symbol libraries. These programs will allow you to select 4.8 Examples of plastic cut-out templates available commercially symbols or component drawings from menus and insert them in your drawings where needed. The more sophisticated programs will add the inserted components to automatically generated schedules. Several generic block and symbol...

Drawing sheet size

The international 'A' series of paper sizes is now universally accepted, and all drawing and printed sheets used in the office will conform to its requirements. It originates in the ingenious concept of a rectangle having an area of 1 m2, the length of whose sides are in the proportion 1 V2 (4.4). The dimensions of this rectangle will be found to be 1189 x 841 mm and by progressively halving the larger dimension each time, a reducing series of rectangles is produced, in which the proportions of...

General arrangement sections

General Arrangement Plans

General arrangement plans in effect constitute a series of horizontal cross-sections through the building, spaced out so that one is taken at every floor level. This spacing is reasonable, since in practice the appearance of the horizontal section is most likely to differ from floor to floor and unlikely to differ between floor and ceiling. 2.16 Elevation as a secondary reference to window components. The reference S 31 leads back to the external seconday elements schedule, where the components...

Floor plans

Assembly Floor Layout

There are three situations to consider General arrangement location drawing designed to show a single building element and what it should contain. The general arrangement drawing designed to be complete in itself i.e. a drawing which in CI SfB Table 1 terminology would be described as 2.1 The basic plan from which the elemental drawings shown in Chapter 1 were produced 1.14, 1.15 and 1.16 'The project in general' and coded -- . Clearly this type of drawing would only arise on the smallest and...

Conventions for doors and windows

Drawing Symbols Double Doors

Double leaf, each leaf single opposite action Vertical pivot opening edge should be stated Horizontal pivot bottom edge opens out unless otherwise stated Top hung casement opening out unless otherwise stated Bottom hung hopper opening in unless otherwise stated Convention assumes all windows are viewed from the outside

General arrangement plansprimary elements

Sfb Drawing Codes

Note that CI SfB Table 1 offers the following choice within the general summary code 2- 22 Internal walls, partitions 28 Building frames, other primary elements. In the larger of the two buildings Project A the decision was made to confine the architect's information about primary elements to a single 2- drawing. A decision was made at about the same time in relation to the smaller and simpler Project B to sub-divide the primary elements to a greater degree. Since the reasons for arriving at...

Title panels

The title panel should be at the bottom right hand corner of the sheet, so that when the drawing is folded properly, the title and number are always clearly visible. A possible exception to this is when A2, A3 and A4 sheets are being used, where the title panel might be reduced in height and spread across the full paper width to provide a more useable drawing area. 4.17 Vertical location of elements in the assembly section is given by references to the planes established in 4.16 Figure 4.19...

Coding assembly drawings

Assembly Drawing Window Opening

A complete system for coding the drawing package is discussed in Chapter 5 but a note here on the coding of the drawings illustrated in 3.17, 3.18 and 3.20 may be helpful. The general arrangement sections 3.17 are coded G for general arrangement 2- for primary elements see notes on general arrangement sections earlier for the reasoning on this and 017, 018 and 019 because that is their sequence in that particular series. The references in the circles are to external wall details or to external...

Component drawings

Timber Clad Infill Panels Between Brick

A component may be defined as any item used in a building which emanates from a single source of supply and which arrives on site as a complete and self-contained unit, whose incorporation into the building requires only its fixing to another component or components. Thus, a window is clearly a component, as is a manhole cover, a door, a section of pre-cast concrete coping, a mirror. So, for that matter, is a brick. A brick wall would be an assembly. Two types of component should be...

Prerequisites for stage F

Cad Trees With Shadows

There is a basic minimum of information which needs to be available before embarking on stage F and this should certainly include the following final set of design drawings stage D record of statutory approvals stages D and E key detailing in draught stage E room data sheets stages C to E outline specification applicable trade literature library of standard details drawing register design team network drawing office programme These items are dealt with in detail below. Final design set stage D...

Room data sheets

Assembly Drawing Example

The advantages of room-by-room scheduling as a medium for conveying information about internal finishes and fittings have been noted earlier. The gradual collection during stage E of such information into a source document of comparable format will clearly assist in the preparation of such schedules at stage F. Whether this is done on a copy of the floor plan or on a series of individual sheets representing each room or room type, is a decision which will be made in the light of the size and...

The assembly drawing

Ambiguous Space Drawing

The juxtaposition of two or more components constitutes an assembly, and depending on the complexity of the arrangement and on how far it may be thought to be self-evident from other information contained elsewhere in the set, it will need to be drawn at an appropriate 3.7 Shelving treated as a component rather than as an assembly. An example of common sense overriding too rigid theories of classification 3.8 Component detail of concrete sill 3.9 Component drawing of different door-sets all...

The drawing register

Sfb Drawing Codes

The drawing register is a key document in the proper organisation of a working drawing project and as such needs to be something rather more than the loose sheet of paper with a scribbled list of drawing numbers and titles which sometimes suffices. After all, it serves a multitude of purposes, being at various times a declaration of intent, a record of performance and, in the event of dispute on abandonment of the project after commencement of the working drawings, possibly a legal document. In...

CAD considerations

Ground Layer Drawings For Plans

The addition of status coding is a useful adjunct to the issue of CAD files also, the status reference being added to the layer naming convention reference A practice might also be maintaining multiple copies of a drawing file on different computers, or in different sub-directories on the same computer some may be back-up copies in case of hard disk failure some may represent different stages in the evolution of the design. For internal purposes a practice will need to know more about a drawing...

Size of drawing office team

Stage Production Information Drawings

The right size and structure of the team is all-important, and in many ways it is a case of the smaller the better. Any increase over a team of one starts to invoke the law of diminishing returns and as the numbers increase so do the problems of control and communications. On the other hand, the diversity of work demanded by most building projects coupled with the constant and remorseless pressures of the overall programme mean that too small a team lacks the necessary flexibility of response....

Homemade systems

It is not difficult to devise your own systems to meet these requirements. Indeed, in practice many offices do, varying the method each time to suit the complexity of the job in hand. Within the primary general arrangement assembly component framework, for instance, it is possible to divide the drawings on a small project into, say, brickwork series B , windows series W , doors series D , etc. The precise method of sub-division and of coding is of less importance than recognising the existence...

Pictorial views

The use of perspective sketches, axonometric and exploded views should not be overlooked as a means of conveying information which might be difficult to document in more conventional forms. The ability of CAD to produce three-dimensional information is of obvious benefit here. Nor should the value of pictorial elevations, perspectives, photo montages and models be discounted as an aid to the contractor. Photographs of existing buildings are invaluable to an estimator when 3.21 Useful format for...

Dimensioning

Drawing Conventions For Timber

That this is a more complex subject than may appear at first sight may be illustrated by a simple example. Consider a timber window set in a prepared opening in an external wall. Unless the wall is to be built up around the window frame, in which case the frame itself will 4.9 The conventions shown are contained in computer software and may be selected as required for the drawing being undertaken. Reproduced by courtesy of Autodesk Ltd serve as a template for the opening, the architect will be...

Drawing conventions

Orthographic Drawing Bsi

In the same way that line thickness is influenced by considerations of scale and the relative importance of the objects delineated, so too is the degree of detail by which various elements are represented. The manner in which a door or a window is shown on a 1 20 assembly drawing is not necessarily appropriate to their representation on a 1 100 general arrangement plan. As always, common sense and absolute clarity of expression are the criteria. If a door frame is detailed 4.6 Overlapping...