I am looking at the value in the beam tables for A36 channels C15x40. The allowable load where shear starts to control is 225k. When I use F4-1 i only get a allowable of 87.3k. Where am I missing something? I'm using the dimensions "T" and "tw" for the area of the web. Thanks.
Can anyone explain to me what is meant in terms of connection types, when the threads are included or exluded in the shear plane? In practice when would use use one or the other? Thanks.
What is the difference in a snug-tight connection and a pretensioned connection if they both ultimatly rely on the bearing value of the bolt for load transfer? Thanks.
IBC 2003 states in section 1802.2.6 that a soil investigation must be performed. Then in 1802.2.7 there is an exception talking about using a diffent Sds. Does this apply to 1802.2.6 as well? If not why wouldn't it? Can anyone shed some light on this? Thanks in advance.