Lighted Channel Letters Made
The dry diazo method of making a Lighted Channel Letters Made print is a two-step operation: (1) exposure and (2) development by ammonia vapors. This print paper is exposed to an ultraviolet light source that causes a chemical decomposition of the light sensitive coating when it has not been protected by a line on the tracing. The exposed print paper is developed by passing it through a chamber containing ammonia vapor. Even though the resulting print is a positive type print (dark image on a white background) the prints are still referred to as “blueprints.” Blueprint properly refers to a specific process and kind of print.
Since the quality of the white print (dark blue or black lines on an off-white background) is important, it is essential that line work and lettering on the tracing is dense and opaque. If the pencil lines are weak, the light will filter through and partially destroy the light sensitive coating in the exposure process. The machine will reproduce the quality of the tracing. The beginning draftsman must attempt to have dense, dark, and vibrant line work.
Time Record Sheets
All architectural offices, whether a one-man or 35-man office, maintain some type of record showing the time that the architect and draftsman spends on each job. During a normal eight-hour working day a man may work on several different projects. All projects are usually divided roughly into four sequential phases: preliminary studies and drawings, working drawings, specifications, and supervision. At the end of each day the employee records his activities according to the name of the job, phase, job number and hours on a Time Record Sheet. Doe's time record sheet for a two-week period. At the end of a specified period— two weeks in this illustration—the hours are easily tallied for each job.
Questions and Problems
- Copy a floor plan of a 5 or 6 room house, using a scale of Va” = 1 foot. Sketch in the symbols on the floor plan which will show the following:
- A masonry wall on the front of the house only; the sides and rear walls are frame covered with siding. The interior partitions are of frame construction.
- Casement windows in the kitchen, ribbon sliding windows in the bedrooms, and double-hung windows in the rest of the rooms of the plan.
- Front and rear entrance doors, a double acting door between the kitchen and dining room, bi-fold or accordion doors for the closets, and a plastered arch if the plan requires one.
- Draw plumbing fixtures on the plan.
- Locate electrical fixtures, outlets, and switches on the plan.
- Identify the following symbols by a sketch:
a. Electric range outlet (plan)
- Outside electric outlet (plan)
- 4-way switch (plan)
- Metal flashing (elevation)
- Stone (elevation)
- 2″ X 4″ dimensioned lumber (section)
- Va” X 3 V2″ casing (section)
- Sliding door (interior wall plan)
i. Sliding door (exterior wall plan)
- Study the first floor plan of a set of plans found in this text. List 20 to 25 items of information found on the plan which are shown by symbols.
- Study the elevations of the set of plans found in problem 3 above, and list 15 or more items of information which are shown by symbols.
- Why is there a need for symbols?
- What organizations concern themselves with the standardization of symbols?
- What are three distinct kinds of architectural drawings which use symbols?
- Sketch a floor plan of a vacation cabin, using a scale of approximately Va” — 1 foot. Using symbols, show at least two doors, three different windows, a fireplace, an open porch, and a bath.
- Copy a plan from a magazine, make the outside walls either frame or masonry, with the interior partitions of wood, using a scale of Va” — 1 foot. Indicate on this plan, by proper symbols, two different kinds of appropriate windows and doors, stairs, cab-nets, plumbing fixtures, and chimney. Lighted Channel Letters Made. anaheimsigns.com