F.
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Steel Falsework Construction
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1.
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Are steel structural shapes and plates identified by ASTM number on the falsework plans and in the calculations?
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2.
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Have steel beams been checked for bending, shear, web crippling and buckling of the compression flange?
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3.
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Has horizontal plane bracing been shown where required to limit compression flange buckling?
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G.
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Deflections and Settlement
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1.
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Is falsework deflection for concrete dead load shown on the plans for all falsework spans?
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2.
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Is falsework deflection from concrete dead load limited to 1/240 of the span length for all falsework spans?
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3.
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Do stringers supporting cast-in-place concrete compensate for estimated camber?
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4.
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For beam spans with cantilevers, has the upward deflection of the cantilevers due to load placed on the main spans been investigated?
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5.
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Are provisions shown for taking up falsework settlement?
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H.
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Compression Members, Connections and Bracing
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1.
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Has general buckling been evaluated for all compression members?
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2.
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Has bracing been provided at all points of assumed support for compression members?
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3.
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Was bracing in each direction considered in establishing the effective length used to check post capacity?
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4.
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Is bracing strength and stiffness sufficient for the intended purpose?
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5.
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If temporary bracing is required during intermediate stages of falsework erection, is it shown on the falsework plans?
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6.
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Have all connections been designed and detailed?
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7.
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Are web stiffeners required on steel cap beams to resist eccentric loads?
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8.
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Are wedges required between longitudinal beams and cap beams to accommodate longitudinal slope or to reduce eccentric loading?
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9.
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Has the width to height ratio of wedge packs been verified to fall within the limits given in the special provisions?
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10.
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If overhang brackets are attached to unstiffened girder webs, has the need for temporary bracing to prevent longitudinal girder distortion been investigated?
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11.
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Have beams and stringers with height/width ratios greater than 2.5:1 been checked for stability?
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12.
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Have sloping falsework members that exert horizontal forces on the falsework been braced or tied to resist these loads?
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13.
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If beams supporting cast-in-place concrete have cantilever spans, have the falsework plans been noted to require the main spans be loaded before loading the cantilever spans?
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14.
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Have timber headers set on shoring towers been checked for eccentric loads, and for shear and bending stresses produced by the eccentricity?
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I.
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Highway and Railroad Traffic Openings (for falsework over or adjacent to highway or railroad traffic openings)
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1.
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Do falsework plans satisfy construction clearances shown on the contract plans?
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2.
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Are posts designed for 150% of the calculated vertical loading and increased or readjusted for loads caused by prestressing forces?
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3.
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Are mechanical connections 2,000 lbs. minimum capacity shown at the bottom of posts to footing connections?
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4.
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Are mechanical connections 1,000 lbs. minimum capacity shown at the top of the post to cap connections?
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5.
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Are beam tie downs 500 lbs. minimum capacity shown for all beams?
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6,
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Are 5/8 inch or larger diameter bolts used at connections for timber bracing?
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7.
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Are temporary erection/removal bracing shown?
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Yüklə 2.6 Mb.