Can some one help me with stuctural drafting.Thank the lord is back

Hello,

Am doing the structural drafting project (online student)

I placed the w12x152, w12x45 and c9x20. but i dont understand the following:

the channel beams rest on the bottom flange of the girders. there is a 1" gap from the web of the girder to the end of the channel.

• Each channel beam is bolted to the girder with a

1/2″

thick angle. Each leg of the angle is 4

″, and the angle is

6″ wide. There are two angles used for each channel

beam, one at either end of the channel. The angle is

bolted to the backside of the channel using two 5/8″ Ø

bolts that are 2 1/2″ long. Each bolt is positioned 1 1/2″

away from the end of the angle as well as 1

1/2″ away

from the nearest side of the angle. Two more bolts with

the same dimensions fasten the other leg of the angle to

the web of the girder. These other two bolts are also

positioned 1 1/2″ away from the end of the angle as well

as 1 1/2″ away from the nearest side of the angle.

Please help.

Thank you.