Steel reinforces cement [Pjpme tips help protect From page 16 greater the ductility or flexibility and therefore the greater the resis- tance to earthquake damage. Old concrete may be non-ductile or have little flexibility if it contains insufficient steel. Some of the bridge and overpass failures in California earthquakes have been the result of fracturing concrete columns which were non-ductile. As with wood frame buildings, the strength of concrete buildings can be compromised by farge open- ings in the shear walls for windows, garage doors, ctc. or even smaller openings for electrical, water or ventilation/heating ducts which were not a part of the original design, Steel Frame Buildings Steel frame buildings share the same properties of lightness and flexibility as wood frame buildings, making them highly resistant to structural earthquake damage. Mobile Homes Ever hear of a disaster that did nat devastate the local trailer park? Most damage from earthquakes is the result of improper or no moor- ing. Mobile homes are light and small, making them extremely vul- nerable to damage from .ven small tremors, Even a slight shift can dis- tort or fracture the frame, and pull utility connections loose. Many of the fires during the January Northridge California earthquake were a result of severed utility lines including gas. Securing a mobile home is simple and relatively inex- pensive. Buildings on Pitings or Slender Supports Many apartment and commercial buildings include a lower storey or basement parking garage, with the rest of the building supported on slender steel or concrete columns. This can severely reduce the entire building's resistance to earthquake motion. There are examples of this kind of construction on the North Shore (both wood frame and rein- forced concrete) and damage can be expected if the design has not taken earthquake motion into effect. Similarly, there are houses on steep banks, which are resting on pite supports. If not properly braced against earthquake motion, these supports may fail with ensuing dam- age to the supported building. Summary Even otherwise strong, resistant buildings can be made susceptible to esthquake damage by alterations to the shear walls or by insufficient bracing of foundation connections. A number of factors determine a building's resistance to earthquake damage; @ The nature of the earthquake itself; its strength, location, duration and the kinds of shock waves it gen- erates; @ The naturc of the building site, including the type of soil and stabil- ity of the slope; @ The design, reinforcement mea- sures, materials and workmanship of the building; and & The type of building, and its inherent strengths and weaknesses. OME If you are in the market for a new home don’t make a move without consulting our Real Estate Homes section first. A guide to the North Shore's best locations and values, we are simply a must-see. And if you are selling, i’s a marketplace where up to 152,400 | North Shore residents could be reading your ad. So make sure you ask your Realtor to advertise your home in the paper where the action is. Buying, selling or just looking, don’t make a move without us. Smart Realtors call - 985-6982 Al WIPER BLADES BID YOU know that over 700 children under age four are admit- ted to B.C. hospitals each year due to falls? Eight out of ten falls injur- ing young children happen at home. RE a ET HOT TIPS By North Vancouver District Fire Department You can protect your young children at home by following a4 these few safety tips: * Safety gates al the top and bottom of steps can prevent falls down stairs. * Keeping one hand on an infant during diaper changes protects the baby from rolling off a table. * In shopping carts, children are safest sitting down and fastened with a safety bett or harness. ¢ A rubber mat or non-slip stickers make bathtubs less slippery. * Taping or tacking scatter rugs prevents them from slipping. Friday, September 9, 1994 — North Shore News - #9 pea * Safety straps help protect babies from falling out of high chairs, « Keeping steps clear of toys and shoes (or anything that might be tripped over) can prevent falls down stairs. * Putting up the sides of cribs and playpens prevents babies from climbing out. * Non-skid wax makes polished floors safer. ¢ Wiping up spills quickly can pre- vent falls in the kitchen and bath- room, Lah An All Canadian Company Est. 1949 § GLASS. AUTO GLASS SPECIALISTS. WE HANDLE ALL. 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