Tests on plain and reinforced concrete beams . als, a cross holt and a 2x4 inch horizontal strut. Six formsv/ere used so that when a beam was made the form might he left onit for three or four days and the other forms v/ere left for use,thus causing no delay. After the foras had heen used once theywarped, owing to the fact that they ahsorhed moisture on the in-side from the wet concrete and remained dry on tl-e outside. this the planks were soaked in a tank a day or so beforethe forms v/ere set up. This assisted in keeping the i)la:-k inshape and also prevented the plank from taking
Tests on plain and reinforced concrete beams . als, a cross holt and a 2x4 inch horizontal strut. Six formsv/ere used so that when a beam was made the form might he left onit for three or four days and the other forms v/ere left for use,thus causing no delay. After the foras had heen used once theywarped, owing to the fact that they ahsorhed moisture on the in-side from the wet concrete and remained dry on tl-e outside. this the planks were soaked in a tank a day or so beforethe forms v/ere set up. This assisted in keeping the i)la:-k inshape and also prevented the plank from taking water away fromthe concrete along the edge of the heams. V/hen the forms hadbeen set up tnd adjusted to the proper size,a batch of concretewas carried and placed into the form in a layer 1 1/2 inchesthick. This first layer was made the right thickness by theuse of a template which was slid along the top of the form strik-ing off a level surface. This layer was not tamped for fear thismight produce a plane of rupture. The reinforcing steel was. 12 then laid on this surface and was properly spaced. Another l^.yer of concrete two or three inches thick was then added and thoroughly tamped until water appeared at the surface. A flat spadewas then pushed down all around the edge of the beam hetween theform and the concrete to allow the cement to run to the make a finished surface. The layer was again thoroughlytamped. In this way layers of concrete three or four inches .thick wei^e added, tamped, spaded and retam-ped until the formwas level full. Tor tite sake of appearance the team was finish-ed over on the top with a thin cocit of mortar. V/hen the endof the bars v/ere turned up as shown in the drawings the barswere bent before being placed in the form. Concrete was piledand tamped in layers high at the ends slanting down to an inchand a half at the third points so that the surface of the con-c^-ete would conform to the shape of the rods. The beajn wasthen filled up in
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttheses, bookyear1904
