Bloggs
If you look to the immediate southeast of LAX, you will see that the base of the B is 5,000’, not ground level. If you look to the immediate northwest of LAX, you will see that the base of the B is also 5,000’, not ground level.
You can see it much better on the actual chart, available from the FAA here:
http://aeronav.faa.gov/content/aeron...s_TAC_76_P.pdf
I draw your attention specifically to the “Los Angeles Special Flight Rules Area” chartlet and description. You will see that the B airspace immediately above LAX is only a couple of miles wide.
You will also see that VFR aircraft can fly northwest at 4,500’, from outside B, directly overhead LAX in B without ATC authorization. You will also see that VFR aircraft can fly southeast at 3,500’, from outside B, directly overhead LAX in B without ATC authorization. (Transponder code, speed restrictions and other conditions apply.)
What do you consider all those blue numbers with (E) brackets mean on the chart you posted? What class of airspace do you consider there is above the Class B?