Trade terminology and component identification
How to name the parts of a roof, a formed profile and an assembly, where sources use one word for different parts, and how to turn a field note into an order line the shop can make, with worked examples and a case study.
4 lessons · about 37 min · 21 diagrams · 5 videos
Version 1.0.0
Builds on these modules
Lessons
0 of 4 complete
Lesson 1 · 10 min · 12 slides · 6 questions
Trade terminology and component identification: principles and terminology
Roof geometry words, slope, the legs, girth, flange, kick and hems of a formed piece, where each AFS part sits on a building, and the safety words in OSHA's definitions.
You will be able to: Name the parts of a roof, the parts of a formed piece of flashing and the places on a building where AFS parts go, define the key terms, and recognise the words that carry a safety meaning.
Not startedStart →Lesson 2 · 10 min · 12 slides · 6 questions
Trade terminology and component identification: materials, standards and design constraints
Where definitions come from, the split meanings of reglet, cap flashing, clip, fascia, drip edge, cricket and saddle, the catalog's material names, and the standard and maximum sizes.
You will be able to: Say which document defines a word, explain the words that mean two things in different sources, and treat material names and sizes as part of the vocabulary an order depends on.
Not startedStart →Lesson 3 · 9 min · 10 slides · 6 questions
Trade terminology and component identification: methods and worked application
A naming method from place to order line, who supplies each part, the installation order of a cleat-and-cover edge from one maker's guide, and worked examples for girth, hems and piece counts.
You will be able to: Apply a written method to name every part of an assembly and say who supplies it, follow the order one maker's cleat-and-cover edge is installed in, and work through a drip edge, a hem and a run of pieces with every number sourced.
Not startedStart →Lesson 4 · 8 min · 10 slides · 6 questions
Trade terminology and component identification: defects, verification and case study
Word defects (reglet, base flashing, cap and kick, hemmed, galv, fascia, lengths and joints), the hand-protection rule for cut edges, a worked field note, and a read-back check.
You will be able to: Diagnose a wrong or two-way word on an order, say what the correction is, and verify an order line by reading it back against the drawing, using a worked field note as the case study.
Not startedStart →
Practical task
Produce a naming packet for one real or drawn building edge that has a roof edge or parapet and a wall or drain: a marked-up sketch, a list of every part with its trade name, its AFS name and who supplies it, a written order line for each AFS part, and a list of every word you had to resolve.
Hand in
- A sketch or marked-up photo of the edge with each part given a letter and a legend that names it with the source of the word (NRCA, AFS or a maker's guide)
- A table of the parts, outside in, with trade name, AFS name, supplier (AFS metal or by installer) and, for each AFS part, the material and unit, the legs and hems with their side, and the girth worked out and checked against the 48 in widest blank
- A length plan for one straight run: the run in inches, the piece length used (10 ft standard or the 10 ft 6 in maximum), the number of pieces and joints, with the arithmetic shown
- A list of every word with two meanings that you met (for example reglet, cap, kick, hemmed, galv, fascia), the question you would ask and the written-out replacement
- A completed read-back of the order against the drawing, marking each name as from the drawing, from the catalog or still a question
Rubric
| Criterion | Meets the standard when |
|---|---|
| Names and sources | Every part has a trade name and an AFS name, each word names its source, and where two sources disagree the packet says so and picks one in writing. |
| Supplier | Each part is marked AFS metal or by installer, and membrane, strip and sealant items are not written as AFS parts. |
| Profile facts | Legs are lettered in drawing order and measured to the sharp corner, each hem has a type, fold-back and side, and girth is the legs plus hem allowances with the 48 in limit checked. |
| Arithmetic | The run is converted to inches, the pieces and joints are counted with the stated piece length, and no piece exceeds the 126 in maximum. |
| Ambiguity | Each two-way word is listed with a question and a written-out replacement, and the read-back leaves no name untraced. |