Bureau of Standards, testing concrete beams, 8/24/29

Testing amount of stretch in metals at Bu. of Standards

Bureau of Standards making extensive tests of glass building blocks. Washington, D.C., June 20. Hollow glass building blocks are being used more and more extensively for structural purposes when both greater light distribution and air conditioning are required. Extensive tests to determine the stren

Is marble elastic, you inquire? Yes, tests that the Bureau of Standards show that a specimen of marble when subjected to great pressure stretches or gives a certain degree without breaking. This photograph shows D.W. Keesler conducting the so-called flexture test with a machine while was designed fo

Bending steel girders. Washington, D.C., Sept. 23. During the testing of the rigid steel frame knees at the Bureau of Standards the officials were constantly watching the girders to determine the exact moment that the load buckled or weakened the knees. This was done as the huge 600,000 lb. testing

Bureau of Standards, steel testing machine. 2,300,000. capacity

Bending huge steel girders. Washington, D.C., Sept. 23. At the U.S. Bureau of Standards officials were witnessing the testing of rigid steel frame knees that are used in grade eliminations such as over-passes, under-passes, bridges, etc. This photo shows the girder or knee placed into the huge 600,0

D.W. Kessler, Bu. of Standards testing granite and marble, 5/13/25

Wear experiments on Portland cement concrete