Quelltext der Seite How to Make a Wheelbarrow

BICYCLE wheels make this wheelbar- 
row easy to roll over a lawn, even with 
loads up to 300 lb. The front panel 
slides up for dumping loose material. 
The body unhooks so the frame can be 
used alone for carrying pipe or lumber. 
Angle iron adds strength to 1 1/4" lum- 
ber to make a rigid, lightweight frame. The 
wheels turn on standard bike axles bolted 
between the two angles on each side of 
frame. At rest, two wood legs braced by 
1" strap iron support the outfit. 
Three sides and a bottom of 1/2" plywood 
are joined by l/4"-by-2" cleats and rein- 
forced on the inside coiners with angle 
iron. Iron strips strengthen and protect the 
floor. Two 1/2'-by-l" cleats on each side 

The front panel in place and serve as guides 
for sliding it up for dumping. Sides are 
notched to fit over the cross members of the 
frame. Eye hooks on each corner lock into 
screw eyes on the frame to hold the body in 
place.—W. M. Bosch, Rumson, N. ]. 

Here's a link to a page on building a simple garden cart / two-wheeled wheel barrow -- uses two bicycle wheels on their own axles, wood, plywood, and iron strips. No welding needed. 

http://www.vintageprojects.com/home-garden/garden-cart.pdf