3. Belmont Fire Photos Belmont Fire PhotosCourtesy Melvin Byrne Melvin Byrne Loudoun County Fire/RescueService Belmont Fire Photos Belmont Fire PhotosCourtesy Melvin Byrne Melvin Byrne Loudoun County Fire/RescueService

4. Leesburg Sterling Ashburn

5. Not To Scale 425429 Townhomes Under Construction Single Family Dwellings 433

6. 425429 Fire Origin Single Family Dwellings 433

7. 425429 Destroyed Single Family Dwellings 433

8. 425429 Substantially Damaged Single Family Dwellings 433

9. 425429 Minor Damage to Townhouses Single Family Dwellings 433

10. House of Fire Origin

11. Primary Exposure

12. Secondary Exposure

13. Townhouses

14. Fire Separation Distance < 8 Feet 6 Feet

15. CAUSE OF FIRE Linked to Drywall Curing Operation in 433 Linked to Drywall Curing Operation in 433

16. CONTRIBUTINGFACTORS: Propane Storage Propane Storage Fire Separation Fire Separation Cedar Shakes Cedar Shakes

22. Separation Requirements 3 Feet From Lot Line or One Hour Wall

24. 8 FEET WEAK LINK HOUSE

27. ZONING AMENDMENT 0 Feet Side Yard 10 Feet Combined

28. 10 Feet Separation

30. FIRE ORIGIN

40. NFPA 80A Recommended practice for fire protection of buildings from exterior fire exposures

42. NFPA 80A Provides an objective approach for the designer to determine and mitigate fire risk

43. Fire Risk Determined By: Building Construction Opening Protectives Building Size

44. Fire Risk Mitigation Distance Between Buildings Residential Fire Sprinklers Fire Resistive Construction

45. Application Example SD #99-00366 Roseberry Section 1 Lots 12 & 13

47. Exposure Analysis Width of Building - 48 ft Height of Building - 30 ft Fire Severity - Light Percent of Openings - 100%

48. Exposure Analysis Table Calculation 48 ft / 30 ft = 1.6 Guide number is 1.74 Separation Distance = (1.74 x 30 ft) + 5 ft = 57 ft

49. Means of Protection Spatial Separation - Table 2-3 Construction Improvements Residential Fire Sprinklers

51. < 8 Feet 6 Feet