building loads

Building LoadsDEAD LOADThe roof dead load.This includes items supported by the roof purlins, typically: panels, purlins, and insulation. (Do not include the rigid frame weight since the program will generate that load.)You need to estimate the purlin weight. owe!er, the roof design reports the purlin weight, which you can use to ad"ust this dead load.By setting the dead load in this way, the rigid frame can be designed without first designing the roof framing. LIVE LOADThe roof li!e load as reported on a hori#ontal pro"ection. SNOW LOADThe roof design snow load. The larger of li!e load and snow load is used for building design. $rane loads and seismic loads are combined with snow load. COLLATERAL LOADThe additional dead load that may or may not be on the building at sometime in the future. WIND SPEED, BASIC WIND PRESSUREYou can enter the design wind speed or the design wind pressure. %or those !alues less than &' psf((.)* +,-m.), the program considers it to be a basic wind pressure. Larger !alues are considered to be awind !elocity. / few wind codes re0uire that the basic wind pressure be entered rather than a windspeed. 1ee the code description in the 2B1 Design 2anual. $lic+ here to "ump to list of wind speed - pressure references. TEMPERATURE LOAD REDUCTION3se 4Y4 if the li!e load reduction is to be ta+en, else use 4,4.The li!e load reduction is in accordance with 1ection ()'5 of the 6**6 3niform Building $ode. That is, for loaded area of ('' ft. (67.5 m.) or less use (' psf ('.*&8 +,-m.), for loaded areas 9 ('' and up to 5'' (&&.8 m.) use 65 psf ('.855 +,-m.), and for loaded areas 9 5'' ft. use 6( psf ('.&8: +,-m.). The rigid frame loaded area is the building width times the sum of one;half the bay width on each side of the frame.hen using the dead load of the facia included the area of the facia face.(Do not include the attachment beam weight since the program will generate that load.)You need to estimate the purlin weight (and girt if applicable). owe!er, the roof design reports the purlin weight, which you can use to ad"ust this dead load. SNOW LOAD, SW (psf, +,-m.)The sidewall e=tension snow load as reported on a hori#ontal pro"ection.