Outriggers must be supported on cribbing large enough to spread the load to the supporting soil.
To prevent damage to the outriggers, all should be fully extended.
Maintaining clear access to the pump for concrete delivery is keeping construction productive and safe at the 11th Street Bridge Project in southeastern Washington D.C. Note trucks entering and exiting the site via different routes.
Operators will position the cribbing and then jack each outrigger individually to assure that the ground is strong enough to support the load.