Rescue / Home Office, Scottish Home Department.

  • Great Britain. Home Office.
Date:
1960
Catalogue details

Licence: Public Domain Mark

Credit: Rescue / Home Office, Scottish Home Department. Source: Wellcome Collection.

    192/274 (page 182)
    26.29 26.30 26.31 26.32 26.33 26.34 26.35 The complete flying shore can now be assembled on the ground, and all points checked to ensure good fitting joints, or ample clearances where folding wedges are required for framing up purposes. When assembled thus, the dimensions should be carefully checked by means of the measuring rods to make certain that the whole structure will properly fit betweeen the walls and can be wedged up securely so as to perform its function. Before moving any pieces on to the job, the parts should be clearly marked so that they can be re-assembled in their correct positions. The erection of the flying shore can now be commenced, and this is started by placing the appropriate wall plate against the damaged wall, temporarily strutting or propping it in position, and inserting any temporary packing pieces needed. In many cases the damaged wall may be unsafe and should not be used to support ladders until at least some support has been given to it by the shoring. A strut can be fixed to provide temporary support to the wall plate. This strut is lodged under the middle cleat which will carry the horizontal beam. Care should be taken not to subject the damaged wall to undue jarring or shock. The wall plate on the damaged wall having been positioned, the other plate can be temporarily fixed in a similar manner, taking care to ensure that the tops of the two middle cleats are level with each other, so that the beam will be horizontal when it rests upon them. The horizontal beam can now be raised into position by placing one end on one wall plate and carefully hoisting the other end. To assist in the hoisting of the horizontal beam, a ladder or ladders can be used against the un- damaged wall, and a rope used to aid in the lifting. This operation must be done with great care and the wall plates, (particularly the bearing of the beam on the first wall plate) must be closely watched. Folding wedges are driven in at the end of the horizontal beam by the sound wall to tighten the beam securely against the wall plate on the damaged wall, so that any load exerted by the tendency of the wall further to move or bulge will be transferred by the beam to the strong supporting wall and thereby resisted. Having received some support, the damaged wall can be expected to withstand the weight of a short ladder, and the flying shore may be completed by the insertion of the four diagonal braces. The lower pair should be fixed first and be a tight fit between the straining piece and the bottom cleats, but it must be wedged if necessary. The upper pair of braces should be fixed and wedged tightly into position with folding wedges at each end of the straining piece. The shore is now firm enough to support ladders and erectors. The flying shore is completed by tightening up the folding wedges and inserting any necessary packing pieces to ensure that the wall plate at the bulging wall has an even and continuous bearing throughout its length. The straining pieces should now be spiked to the horizontal beam and the wire bonds removed. It is not advisable to erect a flying shore between two walls which are more than 25 feet apart. Additional flying shores should be placed along