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  1. _csways

    Energy Savings Analysis Based on ASTM E783 Air Leakage Testing

    Hi, We've been asked by an existing client to perform an analysis of any energy savings as a result of an on-going curtain wall sealant replacement project. We propose to perform ASTM E783 air leakage testing before and after sealant repair to obtain a net air leakage reduction. We are...
  2. _csways

    Wood Roof Framing Connection to Unreinforced Terra Cotta Bock

    We are looking to repair and/or replace a wood-framed roof bearing on unreinforced terra cotta block. A sketch of the approximate existing condition is below. Current attachment is via galvanized tire wire. I hesitate to specify any of the commercially-available framing connectors as they...
  3. _csways

    Spandrel Panel Connection

    Hi, We've been tasked with providing a new connection where a section of the existing spandrel panel is to be removed to provide access to a new, adjacent stair tower. The connection will need to be anchored into the 9"-wide cut face of the spandrel panel. Given the narrow section and factored...
  4. _csways

    Reinforcement Coupler

    Thank you both for the info
  5. _csways

    Reinforcement Coupler

    Hi, We had a Contractor cut right through a #9 bar in a beam under repair. The bar is cut relatively near the existing lap. Since development and lap splice lengths are rather significant for the large bar, we are considering a coupler to join the cut ends. What design considerations and/or...
  6. _csways

    Concrete Through-Bolting

    Hi, Can anyone provide guidance on through-bolting two steel plates to the side faces of a reinforced concrete section? I know I need to consider the bolts in double shear, bearing of the bolts against the plates, and bearing of the bolts on the concrete. However, do I consider the bolts...
  7. _csways

    Vehicle Barrier Wall Strengthening

    It is unclear if the (considerable) reinforcement that has been cut is just carry-over detailing or not. Thus, the desire to provide the same level of reinforcement. A section through the wall at this location is below.
  8. _csways

    Vehicle Barrier Wall Strengthening

    We have been tasked with providing a strengthening design for a vehicle barrier wall that was previously cut to increase site lines. Both flexural and shear reinforcement were cut. Right now we are thinking about using either epoxied and bolted steel plates on each side or a channel to cap the...

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