For concrete roof. Thermal Conductivity is about 1.28 W/mK.
For PIR insulated panel. it's about 0.020 W/mK.
How about for typical roof insulated sheet that you put beneath the thin rigged or corrugated roofing material. What is it's thermal conductivity? I wonder if it would approach close to...
The neutral axis in the interaction diagram doesn't really correspond to the physical location of the column. Or do they?
For example. Below the balanced point. At zero moment. The neutral axis is very small (or infinitely small). At zero moment (edit: I meant at zero axial load). It acts like...
For typical gable roof.. what is the formula for flattest slopes possible where the rain can still flow to the gutter. The area is typical 12 meters width by 12 meters length with gable roof from middle extended to the sides. I need the flattest slope. Any experiences in those actually having...
What formulas do you use to see how the moment at zero axial load (or even non-zero) in the Interaction Diagram can be pushed until the rebars reaching tensile strength (until it breaks)?
Some installers only install roof trusses made of members.. they don't use wide flange beam rafters..
Is there some advantage of trusses instead of using I-beams such as W8x18? What are the advantage and disadvantage of each?
Some engineers I know use a vertical and horizontal spacing of 600mm (0.6 meter) for 10mm of reinforcement in Concrete Hollow Block (CHB) of size 6" thick. Some use distances of 400mm because 600 may not be sufficient.. what is your opinion? What is the basis for calculation of CHB...
For it to be considered a firewall.. what must be the maximum temperature rating it can resist? There are wall insulated panels that are rated at 350 Celsius (662 Fahrenheit), 100 Celsius (212 Fahrenheit).. and has fire retardant properties.. can these be considered firewalls?
What wall...
I'd like to know the following...
1. When you construct your reinforcement concrete wall, do you already plan the vertical dowels to the beam above it? how far into the beam do you put the dowels?
2. In our constructions. We put the hollow blocks starting at bottom (with dowels in ground...
can any confirm that the only reason we compute or determine story forces in seismic is to calculate for base shear or story shear and the forces themselves are not used in any other calculations (such as shear capacity of columns or beams)?
can you treat a building as cantilevered from ground...
I'd like to install accelerometer in a floor to monitor the structure drift due to random sporatic seismic movement below noticeable level. Where to acquire such accelerator (would it be a gyroscope) and how much would it cost?
In walls perpendicular to the seismic direction.. do you use the full height of the wall in computing for the seismic weight or one half of height only.. and what is the basis for half height only as some do?
