GRADED A+
✔✔Structural or natural barrier functions are: - ✔✔Define the protection area boundary
Delay - slow traffic or access
Direct - Control traffic or access to desired entrances or exits
✔✔Chain link fence bracing includes: - ✔✔Terminal posts to be braced diagonally to
nearest line post
No braces on fabric on 6' high or less when top rail is installed
Braces required on all fabric over 6' high.
Fabric over 12' required center brace.
Diagonal braces secured each terminal and adjacent line post - not more than 50
degrees between brace and ground
✔✔Types of chain link posts: - ✔✔Terminal Posts - At the end, corners and gates
Pull posts are terminal posts bracing a long stretch of fence or where elevation changes
All other posts are LINE POSTS
✔✔Fence outriggers are: - ✔✔45 degrees / 3 strands / 6" apart
Increases total fence height by 12"
Outermost strand must be able to withstand 250'
Trashed double strand 13.5 GA wire
✔✔Concertina Wire - Rectangle Razor Shape - ✔✔Rolls clipped together
Opened is 50' typical
✔✔Razor Wire - Pointed Barbs - ✔✔Stainless steel / extends without distortion
Reacts into closed coil
Minimum 3 Rolls
Barrier between poles
✔✔Electrical Fence has two types: - ✔✔Deterrent Fence - shocks and triggers alarm
Monitored Fence - Sensor triggers shock and alarm
✔✔Electric Fence characteristics - ✔✔Can use from 5 to 50 wires
Pulse discharge - roughly 45x per minute
✔✔Passive Barriers: - ✔✔Jersey Barriers are ineffective again vehicle attack without
anchoring
Heavy Equipment should have 7 - 8' tires embedded 50% below grade
RR ties or metal post can be embedded at a 45% angle
✔✔Fencing Applications - ✔✔Chain Link - Most frequently used / visible from both sides
/ Institutional look
, Barbed wire - typically on top guard
Barbed tape - Military / Nuke Plants / Prisons
✔✔Crash Rating Standards - ✔✔K Rating identified capabilities
L Rating identifies distance and part of the vehicle that will travel past the barrier.
✔✔Active Structural Barriers must: - ✔✔Be monitored at all times
SOP to manage
✔✔Active Structural Barrier Types include: - ✔✔Wedge - Rotating, Rising, Surface
Mounted
Retractable Bollards - Hydraulic, pneumatic, gas
Lift arm / drop arm barriers
Gates
✔✔Bollards - ✔✔Spacing between 36 - 48"
Not exceed 38" / 1 Meter in height
Install as close to street as possible
✔✔Dispensable Barriers are deployed only when needed and include: - ✔✔Rigid
polyurethane foam
Smoke or fog
Thermoplastic foam
✔✔2 or more walls placed in a series..... - ✔✔Stronger than 1 wall of same thickness
✔✔Glass should not be used within 40" of exterior door EXCEPT: - ✔✔Polycarbonate
sheet - same thickness
Double cylinder keyed with 1" throw
French Doors
Dutch doors
Doors with plate, tempered or wired glass 15 sec penetration time with hand tools
Mesh or louvers = 30 seconds
✔✔Sliding glass doors mush have: - ✔✔Secondary locking device (bar, pins, etc.)
Laminated safety glass or polycarbonate sheeting
✔✔Window protection is required if: - ✔✔Below 18" from ground
Less than 14' from trees
Larder than 96 SQ inches - 8.5 x 11 piece of paper
✔✔How to protect windows: - ✔✔Fasten frames to structure
Steel bars - 1/2" diameter placed 6" O.C.
Steel Mesh - 9 GA / 2x2 squares
Hinges welded or non-removable pins