44 practical guide to electrical grounding – ERICO Practical Guide to Electrical Grounding User Manual
Page 52
44
Practical Guide to Electrical Grounding
Fig. 2-57
Flat or gently sloping roofs are defined as shown.
Fig. 2-56
Air terminal placement shown on various types of roofs.
1
1
8
4
40' Or Less
Over 40 Feet
Flat Or Gently Sloping Roof
Flat
Gable
Hip
Mansard
Roof Types And General Air Terminal Placement
Fig. 2-58
Protected areas can be determined using a sloping line, with the angle dependent on the height of the structure.
2
1
Protected
Protected
Building Not Over 25' High
1
1
Building Over 25' But Not Over 50' High
50 Feet
Or Less
25 Feet
Or Less
Grounding Book 4/14/99 10/5/99 6:01 PM Page 44 (Black plate)
See also other documents in the category ERICO Accessories for electrical:
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- CADDY SPEED LINK SLK-Keyless Locking Devices (2 pages)
- CADDY SPEED LINK-Accessory Cables (1 page)
- CADDY SPEED LINK-SLK Cable End Accessories (4 pages)
- TSGB Series Screw Gun Bracket (2 pages)
- GLIDER Electrical Box Attachment (2 pages)
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