SleeplessEngineer
Structural
- Jul 12, 2020
- 46
We are adding a building to the rear of existing row house. The elevation is shown here.
Unfortunately, the adjacent property is owned by another structural engineering firm and seems to caused lot of problem to the client already.
The proposed addition is 2 story higher than existing structure and then its set out 13'from existing structure to go 2 more stories higher. We can check the client's existing property for snow drift and reframe if required.
But the problem, I am not sure how to check adjacent property. It is located "diagonal" to the proposed addition( it only shares a corner to the proposed addition). I do understand corner portion might have some additional load due to drifting. We tried discussing with them saying it would be insignificant. But they want to submit a report with assessment.
ASCE only gives scenarios when the building right next it. I am not sure how to determine the drift width and height. Do I take the diagonal length for length of lower and higher roof? That feels too much since the clearance from high roof will go more and more as you go from corner?? Do I need to something to determine more realistic loading?
Can someone please help me understand/ solve this puzzle? Thanks.
Unfortunately, the adjacent property is owned by another structural engineering firm and seems to caused lot of problem to the client already.
The proposed addition is 2 story higher than existing structure and then its set out 13'from existing structure to go 2 more stories higher. We can check the client's existing property for snow drift and reframe if required.
But the problem, I am not sure how to check adjacent property. It is located "diagonal" to the proposed addition( it only shares a corner to the proposed addition). I do understand corner portion might have some additional load due to drifting. We tried discussing with them saying it would be insignificant. But they want to submit a report with assessment.
ASCE only gives scenarios when the building right next it. I am not sure how to determine the drift width and height. Do I take the diagonal length for length of lower and higher roof? That feels too much since the clearance from high roof will go more and more as you go from corner?? Do I need to something to determine more realistic loading?
Can someone please help me understand/ solve this puzzle? Thanks.