Sheet Composition :-
When sheets are bound into a set and a person leafs through the sheets,the information on the right-hand side of the sheet is generally seen first.For this reason,title blocks and important information are often placed to the right side of the sheet,as seen in it.This is particularly important if the sheet is not completely filled with drawings,schedules,etc.The blank,unused areas should appear to the left. As mentioned,the left-hand side has the largest margin,while the other sheet margins should be held to a minimum of 1/2 in.(12mm).Some firms prefer to draw a borderline around the entire sheet,which graphically "surrounds" or encompasses all the drawings.In that case,the borderline is held to the some margins as discussed above.
Title Blocks :-
Title blocks on a construction-drawing sheet serve a number of key functions.These blocks are standardized for each office and are generally placed along the right side of the sheet,running the full height of that edge,minus the 1/2 in.(12mm) top and bottom borders or margins.Title blocks can also be placed along the bottom of the sheet,or in the case of engineering drawings might be simply a block in the lower right-hand corner.Illustrates the most common placement of title blocks.
Title blocks are drawn on sheets in a variety of ways.Many firms have them preprinted on the sheets or programmed into the computer to print out when the drawings are produced.Other methods include making reproducible title blocks with photocopters on transparent sticky-back sheets and individually adding them to the drawing sheets.In these latter cases,additional information can be filled in with pencil,pen or other transfer mediums.
Title blocks typically contain information that identifies the project,its location,the name of the cilent,the designer's (or firm's)name and address,names or initials of the drafters and checkers,revision blocks,and space for professional seals.It might also include information on others involved in the project,such as consulting engineers.The title block tells contractors,suppliers,and important information is placed on the tower right of the sheet for ease of finding.Sets of drawings can then be "thurnbed"through as with pages in a book.Other interested parties the location of the project and who to contact for specific information.Title blocks,as shown in generally include:
⧪ Design firm's name/logo,address,telephone/fax number, and e-mail address (if applicable)
⧪ Date,professional seals,sheet title,sheet number
⧪ Job number and how many sheets comprise a set
Title blocks might also include an area for the initials of the person who drew the sheet,and the person who checked it.The block generally includes a "revisions" section to indicate changes made to the original drawing after the initial date it was issued to the various parties.When serveral revisions are made to a sheet,they are listed as revision A,B, etc, to indicate which changes are most recent.
Lettering on Drawings:-
The most important aspect of lettering in construction drawings is its readability.It should be consistent in style and easy to follow.Most offices use upper-case lettering for quick readability,but a clear lower-case alphabet can also be employed.When several drafters are working on a set of drawings,it is important that all the lettering from the design firm appear in the same style.In both manual and computer-aided lettering, a consisient style or font should be selected and used by all participants.
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