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General Description
Section 1
1-60
1.16.3 Area Load / Oneway Load / Floor Load
Often a floor is subjected to a uniform pressure. It could require a
lot of work to calculate the equivalent member load for individual
members in that floor. However, with the AREA, ONEWAY or
FLOOR LOAD facilities, the user can specify the pressure (load
per unit square area). The program will calculate the tributary area
for these members and calculate the appropriate member loads.
The Area Load and Oneway load are used for one way distribution
and the Floor Load is used for two way distribution.
See section
5.32.4
The following assumptions are made while transferring the
area/floor load to member load:
a) The member load is assumed to be a linearly varying load for
which the start and the end values may be of different
magnitude.
b) Tributary area of a member with an area load is calculated
based on half the spacing to the nearest approximately parallel
members on both sides. If the spacing is more than or equal to
the length of the member, the area load will be ignored.
c) Area/Floor load should not be specified on members declared
as MEMBER CABLE, MEMBER TRUSS, MEMBER
TENSION, MEMBER COMPRESSION or CURVED.