Complex parapets and roof edges
Why roof edges fail first, what the code and the edge-metal standards say about fire parapets, coping and corners, worked checks on height, width, counts, joints and raked runs, and a fictional re-roof taken from defects to a corrected schedule.
4 lessons · about 44 min · 16 diagrams · 4 videos
Version 1.0.0
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Lessons
0 of 4 complete
Lesson 1 · 10 min · 10 slides · 6 questions
Complex parapets and roof edges: principles and terminology
Why roof edges fail first, the four jobs a parapet does, the words for each part, the conditions that make a parapet complex, and the line between what a fabricator makes and what the designer of record decides.
You will be able to: Name the parts of a complex parapet and its edge metal, separate the three meanings of corner, say which jobs a parapet does at once, and state who decides what on a project.
Not startedStart →Lesson 2 · 11 min · 12 slides · 6 questions
Complex parapets and roof edges: materials, standards and design constraints
Fire parapet height and noncombustible tops, coping and drainage wording by edition, ES-1 RE-3 and its limits at corners and ends, appliances, manufacturer limits as published, and movement in masonry and copper parapets.
You will be able to: State what the code and the edge-metal standards say about fire parapets, coping, testing and corners, say what ES-1 does not cover, and read a maker's published limits without moving them to another system.
Not startedStart →Lesson 3 · 12 min · 12 slides · 7 questions
Complex parapets and roof edges: methods and worked application
A ten-step method for complex edges, eight worked examples with their inputs, and the installation sequence at corners, ends and a taller wall as makers and trade sources publish it.
You will be able to: Apply a documented method to a complex roof edge: check fire parapet height, coping width against a published range, corner counts, joints, girth and raked lengths, and write down every input and unit.
Not startedStart →Lesson 4 · 11 min · 12 slides · 7 questions
Complex parapets and roof edges: defects, verification and case study
Where edges fail in the field, four paired defects with their corrections, a desk and field checklist, and a fictional clinic re-roof worked from reading the drawings to the questions to send.
You will be able to: Diagnose the common defects at complex parapets and roof edges, say what verification catches each, and work a fictional re-roof from the evidence to a corrected schedule and an RFI log.
Not startedStart →
Practical task
Produce a complex parapet job packet for one roof of your own design (or a job you know): a plan of every edge condition, the decision rationale for the coping system, the assumptions and units, a desk and field checklist, and a defect analysis with an RFI log.
Hand in
- A decision rationale: whether a fire parapet is required, the coping system chosen and the published range it was checked against, with each document named and its edition or date
- A roof plan marked up with every condition: straight runs, outside and inside corners, ends against taller walls, height steps, raked tops, scuppers, movement joints and appliances
- An assumptions table with units: wall width readings, parapet height measured from the roof surface, run lengths at 10 ft pieces, and flat width of the coping against AFS's 48 in limit
- A desk and field checklist for the submittal and for the work before it is covered
- A defect analysis of one condition that could go wrong, with the question you would send to the designer of record and to the coping maker
Rubric
| Criterion | Meets the standard when |
|---|---|
| Fire parapet | Height is measured from where the roof surface meets the wall, the noncombustible top is named, and the edition of the code is stated. |
| Published range | Each coping size is compared with the maker's own published range, widest wall reading first, and no maker value is moved to another system. |
| Corners and ends | The corner region, the corner piece and any nailing band are kept apart, and terminations against taller walls are detailed outside the test. |
| Layers and appliances | The membrane runs under the coping, nailers are sealed, and no appliance is fastened through the coping. |
| Assumptions | Every input has a unit and a source, or is labelled as an assumption; no price or rating is invented. |
| Roles | Design decisions are assigned to the designer of record; AFS appears only as fabricating what the approved drawings show. |