1. CRIME PREVENTION THROUGH ENVIROMENTAL DESIGN
C.P.T.E.D. (Pronounced sep-ted)
By Brian Kornegay

2. CPTED CONCEPTS 3 MEASURES TYPE OF ACTIVITY WHO ARE THE INTENDED USERS
WHO ARE THE POTENTIAL ABUSERS

3. Basic Principals of CPTED
Territoriality
Access Control
Natural Surveillance
Activity Support
Maintenance

4. Territoriality
Refers to defining of space as public, semi-public, semi-private or private
Is the expression of pride and ownership
Prevents unauthorized use of
space by unintended users
Public
Private
Outer

5. Access Control
A method of guiding people to and from a space by effective use of entry & exit points to minimize uncontrolled movement

6. Natural Surveillance
The ability of the intended property users to observe their surroundings
Can be created by designing buildings, activity locations, and landscaping features that provide maximum visibility
A concept based on the fact
that criminals do not want
to be observed committing
crimes.

7. Activity Support
Placing activity where the individuals become part of the “natural surveillance”
When the activity can be enjoyed safely, crime is deterred
A “risk” for the potential offender increases

8. CPTED EXAMPLES
Montezuma’s Castle,AZ
Wakanukka Prison Canada
Fort Knox

9. The Ultimate
C.P.T.E.D. Property

10. Target Hardening
Security measures to make entry or removal of property more difficult

11. Fire Escape Warning
The fire department recommends crawling out of burning buildings
Mount any device low so it can be reached while crawling!

12. Entry Doors Hollow Core Solid Core
Made of solid wood, laminated wood, particle board, steel, fiberglass or a combination of the above
Made for exterior use
Much harder to kick open
Hollow Core
Intended for interior use only
Easy to force or kick open
Older houses often have them as exterior doors

13. Door Locks

14. Locks Deadbolt Good choice if Bolt is dead (can not be pushed in)
Installed properly
Quality lock is used
Bolt is dead (can not be pushed in)

15. Deadbolt Single vs. Double cylinder
Double cylinder often used when there is a window in or near the door
Should leave key in door when people are home for emergency exit
Not allowed by some fire codes
Installed in most houses
Need key for entry only

16. Deadbolt What to look for
1 Inch throw on bolt
“Anti Wrench Collar”

17. Security Strike Plates
On all entry doors
Install with 2-3 inch screws
extend into the framework of the building not just the trim wood
Makes it harder to kick open

18. Mortise and Rim Locks Mortise Rim Locks Mortise lock
Bolt
Spring latch
Mortise
Often called box lock due to shape
Mounts in rectangular cavity (mortise) inside door
Special tools and expertise needed to install
Usually has spring latch and dead bolt
Rim Locks
Similar to mortise but mounts on side (rim) of door
Good choice for almost all doors
Has vertical or horizontal bolts
Use quality screws

19. Eye Viewers AKA peep holes Not to be confused with “peoples”
Minimum of 180 degree
Good working order

20. Exposed Hinges If the door opens out it has exposed hinges
Drive screw or nail into door leaving it exposed about 3/8” to fit into hole drilled in door jam
If the door opens out it has exposed hinges
Harder to kick in
Easy to remove hinge pins and remove whole door
Special hinges can be bought with set screws and/or locking pins
A screw or dowel can be installed into the current hinges
dowel
Hinge pin

21. Fire Escape Warning
The fire department recommends crawling out of burning buildings
Mount any device low so it can be reached while crawling!

22. Windows Windows are left unlocked more often than are doors
Many ways to secure windows depending on the type of window

23. Sliding Windows Very common Reinforce same as sliding doors
Thumbscrew locks can be placed on the track

24. Sliding Glass Doors (Arcadia Doors)
Usually have latch and not a lock
Often able to be lifted from track and removed
If not removed by lifting, it often disengages the latch

25. Arcadia Door & Sliding Window Fixes
Place a dowel or stick in track
This will not secure one that can be lifted off track
Install screws in track above door to keep it from being lifted
Drill hole through door into frame to install a pin
Being careful of the glass
Many devices are available from the local hardware store
Charlie bars
Mechanical pins
Track blocking devices
Some with locks
DOWEL

26. Double Hung Windows Slides vertically
Usually have upper and lower windows
Many commercial devices to secure these windows
Window can be pinned by drilling a hole through the front window into the back window and installing a nail or pin
Drilling the hole at a downward angle will keep the pin in place
Side view
Nail

27. Casement Windows Crank Open Obvious to passersby when open
Lever locks the window not the crank
Levers can be drilled and pinned
Worn crank hardware may not close the window enough for lever to engage and lock window closed
New hardware should fix this

28. Iron Bars
Can be mounted over ground floors windows if local code allows
Must have break away feature to allow emergency escape

29. Landscaping
Sends strong signal to criminals
Visibility is the key

30. Bushes Below window level
Prevents concealment during entry
Tree branches 6 –7 feet from the ground
Opens up view increasing natural surveillance
Shrubs cut to 36”

31. Consider planting thorny plants under windows and around fences
Cactus
Roses
Bougainvillea
Pyracantha

39. Uniform Security Lighting
Permits recognition of color of clothing and vehicles and ethnicity of persons at 100 feet

40. Perimeter Lighting
Some jurisdictions have a “dark sky” ordinance that restricts certain types and styles of fixtures
Consider motion sensor lights in rear and side yards
Inexpensive and can be a signal that someone is there
Porch and carport lights left on all day signal you are away
Use photo cells

41. Lighting Lighting enhances surveillance Exterior Lighting
Parking in common areas
If you see a threat you can avoid it
Good lighting is needed on walkways and at entrance
House numbers too

42. Lighting Interior Lighting Looks like someone is home
More comfortable to not enter a dark home
Use timers or photo sensors

43. Fences Must be maintained and gates locked
Criminals like a clear escape
Fences slow them down
prevents removal of heavy items
We Do not recommend placing glass, tar or carpet tack strips on top of fence
Police and fire often have to climb fences
Consider fencing that enhances Natural Surveillance
Wrought iron
Quality chain link
Must be maintained and gates locked
Access control and territoriality

44. What’s wrong with this picture?
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45. ANY QUESTIONS?