Good morning. 1. Shear walls in the 2nd story only have to be strong enough to resist Reactions at the roof, IOW, RrA and RrB. The wisest course would be to design for the largest of the two, RrA in his example?
2. If its a gable roof, how do you calculate the minimum load to roof based on...
Good morning. On p2.40, Example 2.10, Wind Force, Components & Cladding, Wall Forces for regions b and c (Interior Zone 4) for effective wind area of 10 sf: Pnet30 = 14.6 psf and -15.8 psf.
Q1: There is no zone 4 in ASCE 7 Fig. 6-3.
Q2: Where does he get 14.6 and -15.8?
Ditto p2.41, Wall...
2006 IBC p450 for 19/32" sheathing, 10d 4"oc, 12" field, floor or roof strength 510plf, mult by 1.4 for wall for 714plf.
What if the sheathing is 3/4" thkness, what is the nailing requirements and strength? Thx.
An HVAC unit is rated at 2400 cfm at 0.8"wc and 75,000 Btu/h. You're going to subdivide its zone into two zones with motorized dampers. To prevent icing of the unit in summer, and overheating in winter, you're going to install a barometric damper between the supply duct and the return ducts...
An office building HVAC unit serves Zone 1 and Zone 2, which are connected by various hallways. Some Zone occupants are cold, while others in the other Zone are not. It is proposed to install a thermostat for each Zone, along with some Automatic Dampners to solve the problem. When one Zone...
A rooftop HVAC unit on a 2-story office building is rated at 2400 cfm at a static pressure of 0.6"wcg. The conditioned space is on the 1st floor. The first duct segment is 30x12 inches metal and contains at least 3 elbows. The estimated equivalent length Le is 125 ft. The pressure drop is...
What is the best book on trusses, that has the answers to the problems? I have the small "Simplified Design of Roof Trusses for Architects and Builders", by Parker, 2nd edition, 1941, 1953; which I like, but it does not have the answers to the problems. [b]
