Mezzanine Update

Outline: Review key questions from Mezzanine Analysis presentation Analyze Lateral Loading Scenarios Hand rails material Reference Material Mezzanine Build Plan Outline

Next Steps/Questions: Can the mezzanine be anchored into the supporting structure? YES Anchors would be placed into side walls (and potential back wall) to prevent lateral movement and offer stability If the mezzanine needs to be free standing: DOES NOT NEED TO BE FREESTANDING Knee Braces will need to be added to each post. This requires unique analysis. Sheathing would need to be added to the columns/post to restrict lateral movement. Although they are not very strong, an analysis needs to be conducted on Lateral Loads to our system. IN PROGRESS Fireproofing the structure may be a requirement from the city. PROPERTY MANAGER WAS NOT CONCERNED, ACTION TBD A permit may be required (city originally said no, but Subject Matter Experts think one will be needed). PROPERTY MANAGER WAS NOT CONCERNED, ACTION TBD If a permit is required, there is a chance this mezzanine analysis will need to be signed/stamped by a Professional Engineer. TBD

Lateral Loading Analysis Sourced from ASCE 1.4.3 1% DL + small % LL (eng. discretion) LL = 125 lb/ft2 LL ≈ 23250 lb DL = 2538 lb (0.01*2538)+(0.01*23250) Lateral Load = 258 lb Item Linear Weight [lb/ft] Total Length [ft] Total Weight [lb] 2x4 HF 1.1 120 132 2x8 HF 2.3 476 1095 2x10 HF 2.9 24 70 4x4 PT 4.8 12 58 1.75 x 11.875 LVL 6.1 78 3.5 x 9.25 PSL 10.1 242 ¾” Ply 2.5 lb/ft2 186 ft2 465 Total 2538

Securing to Cinder Blocks Material Powers Fasteners Lok-Bolt AS Sleeve Anchor Tapcon cement screw Angle brackets Method Use product data sheets to check for allowable load and shear Attach ledger board to back wall Secure column at top and bottom with angle bracket

Hand Rails Requirements Material Method 200 lb point load in any direction OSHA height requirements Material 1-1/2" SCH 10 (1.90 OD X .109 wall) A-500 Structural Steel Handrail Pipe Method Pipe fittings Fabrication https://www.simplifiedbuilding.com/solutions/pipe-railing/ http://www.alleghenyfence.com/images/rg4B.jpg

Hand Rails Pipe fittings Fabrication Pros Cons Pros Cons Removable Simple installation Cons Fittings add cost Pros Less material costs Available welding resources Cons More man hours Prepped off site

Reference Material Simpson Strong Tie Catalogue ASCE Standards 7-10 Weyerhaeuser product literature Powers Fasteners product literature Tapcon product literature NDS literature

Build Plan Outline Macro Level – “Bottom Up, Back to Front” Detailed: Measure foundation and walls to determine whether methods, such as shimming or concrete leveling, are needed to “square” facility Lay sill plate Cut columns (near walls only) to appropriate heights and install. Place column anchors Place supporting beam plate along columns Cut and install “ledger board” on back wall (anchoring to the as appropriate)

Build Plan Outline Detailed Continued: Cut and install remaining beams. After (or possibly during) the placement of Beam C, begin installing columns supporting elevator opening Install joist hangers Cut and install joists Place any additional anchors that may be required Sheath the top of the mezzanine with plywood Install handrails (and possibly stairs)