Double Stacking Pallets

Good afternoon,
I am trying to find out what the legal rules are in British Columbia Canada when double stacking Pallets in a Dry Van. Is it a legal requirement to use "Load Bars" (those 4X4" types) or not. My Employer tends to be very "frugal" definitely not spending any Money unless absolutely necessary.

So far I have been using only Load Straps.
Also used at times what are called Load Lock (basically 2 Tubes sliding to expand) but I think they are almost the same as useless to secure a Load properly especially when double stacking heavy Pallets.

Thanks in advance for knowledge based advice ! W.T.K.

 

Typically Pallets are Animal Feed in Pellet form in Paper Sacks, other Pallets may have Sacks of Fertilizer.
Thanks - W.T.K.

 

Rollover not likely on good Roads if the Load cant shift plus one considers the curves carefully. I pulled Tankers for about 15 Winters in BC & AB, much more dicey in the Mountains especially when not fully loaded and/or on some Oilfield Roads, never once went over.

How high you ask, as far as the Door allows pretty well right to the Top.

Thanks -W.T.K.

 

Sorry forgot something to answer.
Each Pallet is individually shrink wrapped.
Thanks - W.T.K.