Gaadiidka saxda ah ee loogu talagalay Girders horay loo soo saaray Waxaa loogu talagalay bilaabidda nidaamyada Gantry

The Bridge Girder Carrier, commonly referred to as the beam trolley or traveling trolley, is a specialized motorized transport unit installed on the launching gantry system. Its primary function is to move precast girders (T-beams, U-beams, I-beams, box girders) along the longitudinal axis of the launching gantry and precisely position them above the bridge piers for erection.

Qeybtan waxay doorar muhiim ah ka ciyaartaa xaqiijinta maareynta ammaanka ah, xasilloonida, iyo saxda ah. of culus beams inta lagu jiro mashaariicda dhismaha buuraha iyadoo la adeegsanayo span-by-span  ama habka cantilever ee isku dheelitiran.