per DCID 1/21 (http://www.fas.org/irp/offdocs/dcid1-21.pdf)
4.1.1 Reinforced Concrete Construction: Walls, floor, and ceiling will be a minimum thickness of eight inches of reinforced concrete. The concrete mixture will have a comprehensive strength rating of at least 2,500 psi. Reinforcing...
Why would a piece of round stock be welded to the inside corner of angle Iron?
I have been observing a truss framed roof from 1921. The angle irons on the upper parts of the trusses have a round stock of a diameter approximately 1/3 the flange width.
What could the reason be for the round stock?
Our underpinning foundation subcontractor is advocating use of 12" block as the underpinning material (dry packed at the top 2”). Are there any opinions, questions or observations from experience contractors that I should address with the sub?
Background:
The underpinning is to be continuous...
What are the tests performed on the soil prior to an under pinning planning and prior to start of construction?
What observations / tests about ground water are performed?
Are there any other check list items?
Original thread here
PEinc said:
Read the underpinning chapters in books by Winterkorn & Fang, Robert Ratay, and Alan McNabb.
I have found the following:
Earth Retention Systems Handbook ~ Alan Macnab
Foundation Engineering Handbook ~ Hans F. Winterkorn & Hsai-Yang Fang
Handbook of...
Please bear with me, as I have never managed an underpinning project before. My goals today are to obtain/confirm the high level steps so I may ask more detailed/accurate questions later.
Here is my outline of tasks:
1. Define depth required to accommodate future use
2. Survey site
2.1...
