A small building can be constructed of steel or wood framing. A decision is made to use steel for fire resistance. If 0.60 m^3 of steel is required for the same structural support as 1.25 m^3 of wood, how much more mass will the building have as a result of this decision? (Approximate the density of steel by that of pure iron. The density of wood can be taken to be 0.42 Mg/m^3© BrainMass Inc. brainmass.com October 24, 2018, 7:48 pm ad1c9bdddf
Density of Iron = 7.86 *10 3 Kg/m 3
= 7.86 Mg/ m 3
Density = Mass/Volume
Mass = Density * volume
Density = 0.42 ...
The solution is comprised of a comparison of two materials based on their weight for constructing a industrial building.
Dobson Construction: Percentage of completion on contract
See attached file.
The first problem is to compute the percentage of completion on a 4,000,000 lump-sum contract. Also, need to indicate the amount of gross profit that would be reported on this contract - labor $850,000 - materials and subcontractor 1,750,000 - indirect costs 400,000. Costs incurred to date are labor 464,000, materials and subcontractors 1,098,000- indirect costs 193,000. Included in these costs to date were standard electrical and mechanical materials stored on the job site but not yet installed with a cost of 105,000. According to the instructions these should not be included in the costs incurred to date.View Full Posting Details