摘要:
A connector/beam joining method for joining a beam and a connector having a base plate and a projection, both formed into a T-shape in cross-section, in which the edge of a welding groove provided on the end of the projection of the connector is matched with the edge of the inside surface of a flange constituting the beam for positioning, and a backing strip formed into a prescribed length is fixedly fitted by welding so as to come in close contact with the end surface of the projection and the inside surface of the flange.
摘要:
A low load burning burner comprising inner air flow nozzles, outer air flow nozzles and a fuel gas nozzle, and further having a motive air supply means, which is operated at the low load burning of a heating furnace, can maintain the furnace temperature uniform, and can heat materials arranged in the width direction of the furnace to a uniform temperature along the width direction of the furnace.
摘要:
A process comprising the steps of adding an inorganic foamed aggregate, an inorganic solid aggregate and a reinforcing fiber to cement to prepare a cement mixture, kneading the cement mixture with addition of 3 to 15% by weight of water based on the mixture to obtain a relatively hard kneaded mixture, press-molding the kneaded mixture at pressure of 200 to 600 kg/cm.sup.2, adding water to the molded piece to adjust the water content thereof, preheating the molded piece at a temperature of 40.degree. to 70.degree. C. before curing, spraying to the surface of the heated molded piece an aqueous dispersion prepared from resin and cement-type coloring material and containing inorganic particles 0.1 to 1.5 mm in size, drying the coated piece, applying a colored resin composition to the coating, and curing the resulting piece in an autoclave with pressurized steam, whereby a colored roofing panel or like cement product can be prepared.
摘要:
Fittings for connecting H-shaped beams and columns of a steel frame construction, each fitting comprising an L-shaped outer fitting member connecting an outer surface of a flange of the beam to the column by means of bolts and an L-shaped inner fitting member connecting an inner surface of the flange of the beam to the column by means of bolts having a space for receiving therein a web of the beam, thereby embracing the flange of the beam between the L-shaped outer and inner fitting members to provide two surface frictional engagements. A column side plate of each the L-shaped fitting members successively increases its thickness from a free end to a portion connected to the beam side plate thereof. A method of connecting a column and a beam having an H-shaped section, wherein after the L-shaped outer fitting member for a lower flange of the beam has been connected to the column, the other outer and inner L-shaped fitting members are temporarily fixed to the beam such that the overall length of the thus assembled beam and fittings is shorter than their ultimate length. Then the beam and fittings are placed on the first outer fitting member and all the fitting members are ultimately bolted to the column and the beam.
摘要:
A steel column base member for connecting structural steel column member to a concrete foundation, which base member is an integral molded or die-forged body comprising a base plate portion to engage the foundation, a projected portion to be joined to the column, and smoothly curved sidewalls extending from the base plate portion to the projected portion. The top surface of the projected portion is of substantially identical shape with the cross section of the column.
摘要:
An image reading apparatus and an image reading method are provided by which a top face image and a back face image of a document can both have an improved reading accuracy while simplifying a circuit configuration and providing a higher processing speed. A period within which a reading operation is interrupted is set based on a relation with a free capacity of a buffer memory so as to avoid a period within which the top face image and the back face image of the document are both read.
摘要:
The present invention provide a sheet conveying device comprising a driving source which freely rotates in a forward/reverse direction, a separation roller shaft configured to drive a separation roller to separate and feed each sheet to be conveyed in accordance with forward/reverse rotation of the driving source, a stopper unit configured to close a conveyance path of stacked sheets on an upstream side of the separation roller in a conveyance direction, a stopper opening/closing member configured to open/close the stopper unit in a vertical direction, and a transfer unit provided between the stopper opening/closing member and the separation roller shaft and configured to transfer a rotating force to the stopper opening/closing member in accordance with a drive of the separation roller shaft.
摘要:
An image reading apparatus and an image reading method are provided by which a top face image and a back face image of a document can both have an improved reading accuracy while simplifying a circuit configuration and providing a higher processing speed. A period within which a reading operation is interrupted is set based on a relation with a free capacity of a buffer memory so as to avoid a period within which the top face image and the back face image of the document are both read.