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Building Data Report

0. Space Type	BOS-School
1. Establishment Name	Bradley Manassah E Elem
2. Address	address
3. City	Boston
4. State / Province	MA
5. Country	USA
6. Date	03/21/2021
7. Data Source	School District
8. Performed by	External Company
9. Company Name Address Contact	Cashins & Associates, Inc. 599 North Ave #8, Wakefield, MA 01880
10. Requirement Source	Boston School 3 ACH guideline
11. Technology	Natural Ventilation Windows and Limited Univent HVAC
12. Min ACH	2.2
13. Max ACH	4
14. Avg ACH	2.9
15. eACH	0
16. Filter MERV
17. Percent Outside Air	66.1
18. ON and Ventilates Entire Indoor Area	Yes
19. Vent Clearance min 6 ft	Yes
20. No of Rooms	6
21. sqft	926.9
22. cuft	9269
23. No of Buildings	1
24. Comments	Source Boston School District March 18, 2021. https://www.bostonpublicschools.org/Page/8463 . https://drive.google.com/file/d/1bzam7XeMQDjjv7Og_86PS41K78hBEOfT/view . assumed 10ft ceiling. wACH windows provided in dataset. Calculated wACH from measured CFM rates in dataset do not match. Differences due to errors. Did not use calculated wACH. Room 206. % Outside air 68. Calculated air volume (cfm) outside 390. Calculated air volume (cfm) return 180. Combined air volume (cfm) 570. ACH outside 2.7. ACH merv filter return air 1.3. ACH total 4.0. ACH Copy paste check (uses total or outside) 2.7. Room 212. % Outside air 54. Calculated air volume (cfm) outside 227. Calculated air volume (cfm) return 193. Combined air volume (cfm) 420. ACH outside 2.0. ACH merv filter return air 1.7. ACH total 3.7. ACH Copy paste check (uses total or outside) 2. Room 103. % Outside air 79. Calculated air volume (cfm) outside 325. Calculated air volume (cfm) return 85. Combined air volume (cfm) 410. ACH outside 2.2. ACH merv filter return air 0.6. ACH total 2.7. ACH Copy paste check (uses total or outside) 2.2. Room 101. % Outside air 68. Calculated air volume (cfm) outside 282. Calculated air volume (cfm) return 133. Combined air volume (cfm) 415. ACH outside 1.9. ACH merv filter return air 0.9. ACH total 2.8. ACH Copy paste check (uses total or outside) 1.9. Room 105. % Outside air 73. Calculated air volume (cfm) outside 235. Calculated air volume (cfm) return 85. Combined air volume (cfm) 320. ACH outside 1.6. ACH merv filter return air 0.6. ACH total 2.2. ACH Copy paste check (uses total or outside) 1.5. Room 221. % Outside air 10. Calculated air volume (cfm) outside 80. Calculated air volume (cfm) return 650. Combined air volume (cfm) 730. ACH outside 0.5. ACH merv filter return air 4.2. ACH total 4.7. ACH Copy paste check (uses total or outside) 0.5.

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