Wood post Cracks

[Rsayed PE]

I designed a deck with 8x8 wood posts in Tampa, FL

the posts are 15 ft apart with deck projection of 13.5’ from the house. Those cracks appeared and started to progress in the past 2 month since the GC installed the posts. I know these maybe a normal checking but i needed an opinion. Some of these columns have checkings in both directions. The column per my design is at %50 capacity (Max) The applied ASD axial load is about 11kips for the 11.5’ columns.

Anything I did wrong here ?
Any ideas on how to repair/remediate ?

 

[XR250]

Looks like normal checking. How on earth are you getting 11k per column?

 

[jhnblgr]

Depends on species of lumber used, sealing to keep moisture out. But wood is natural to it will almost always do this with changes in moisture content and sun.

 

[Rsayed PE]

Looks like normal checking. How on earth are you getting 11k per column?

I calculated it at an excessive load 100 psf x 105 SQFT trib (15x7 ft)

 

[gte447f]

These cracks are normal checking. Nothing to see here. Move along.

Pressure treated southern pine timbers are often "soaking wet" when you get them from the big box store. Sort through a stack of fresh ones and you will notice that they are all quite heavy and you will encounter several that weigh about a ton (exaggerating) . As they dry in the Florida sun, these checks can happen.

 

[Ron247]

Those look like normal checks to me. 8x8 PT SYP gets fairly noticeable checks.