Ch 19 pg 486-493
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Questions and Answers

_____ systems are generally the last items completed since the heads aren’t installed in hung ceilings areas until the ceiling itself is installed. The same may be true for fire doors and partitions in areas that aren’t yet rented

Sprinkler

As an absolute minimum the standpipe riser and outlets should progress to within ___ floors of the highest level under construction. This is a required part of many construction codes, but it is often overlooked

Two

Most standpipe systems in buildings under construction will be ______ dry systems, at least temporarily

Non automatic

Buildings under construction may be equipped with an FDC connection you haven’t seen before which is ___ black pipes with swivels sticking out through a fence or tarpaulin

<p>Two</p> Signup and view all the answers

It isn’t unusual to find the floor outlet valves left in the open position, especially the ones in the ____, which are drains for the plumber

<p>Cellar</p> Signup and view all the answers

First arriving units should make it a habit to test the ___ floor outlets for water before proceeding upward

<p>First</p> Signup and view all the answers

The ___ of the riser is left open without a shutoff of any kind

<p>Top</p> Signup and view all the answers

A riser _____ valve may be installed to divide the system into two or more zones. These valves may be closed to facilitate pressure testing of a segment

<p>Sectional</p> Signup and view all the answers

The sectional valves are usually found every ___ ft of building height ( every __ floors in residential buildings, every 10-__ in commercial buildings)

<p>150 15 12</p> Signup and view all the answers

A sectional valve is often found on a _____ equipment floor, but it may be in a staircase as a riser control valve.

<p>Mechanical</p> Signup and view all the answers

A bearing wall is stronger than a free standing wall due to the downward ____ load and as well as the ____ bracing provided by the floor and roof.

<p>Compressive horizontal</p> Signup and view all the answers

Steel I beams and columns often relieve a spray on ____ coating that protects them from heat

<p>Fibrous</p> Signup and view all the answers

If this spray on coating is removed due to alterations steel will lose strength at approximately ____ degrees f

<p>1500</p> Signup and view all the answers

Many so called non combustible buildings rely on a ___ ceiling to provide a membrane type fire resistance from the occupancy and otherwise unprotected steel

<p>Hung</p> Signup and view all the answers

A heavy fire that involves in area which numerous steel cables act as support demands either immediate ____ of the cables or prompt _____ of the building and the surrounding area

<p>Cooking evacuation</p> Signup and view all the answers

Steel cables found in post tensioned concrete give it ____ strength

<p>Tensile</p> Signup and view all the answers

The hydraulic jacks exert ____ of pounds or pressure to the steel cables in concrete

<p>Thousands</p> Signup and view all the answers

The jacking phase of post tensioned concrete can take ____ weeks

<p>Several</p> Signup and view all the answers

It takes about __ hours for concrete to harden enough even to be able to support its own weight. It’s in this period that it’s most vulnerable to collapse due to fire

<p>48</p> Signup and view all the answers

The floor below the most recently poured concrete is a veritable lumberyard of ____ and ___ post

<p>Plywood 4x4</p> Signup and view all the answers

The 4x4 post are placed every __ ft in each direction to support the weight of the concrete

<p>4</p> Signup and view all the answers

The entire ceiling is made of plywood or fiberglass, which has often been treated with a _____ coating so that the concrete doesn’t stick to the wood

<p>Combustible</p> Signup and view all the answers

It takes concrete approximately __ days to reach its greatest load carrying capacity

<p>28</p> Signup and view all the answers

After the first 48 hours the formwork will stripped off to be re used on high floors, but for the next __-20 days the floors will still be braced with 4x4s, spaces every __ ft

<p>16 8</p> Signup and view all the answers

Newer construction methods use adjustable _____ post to replace wooden post, and _____ forms to replace plywood for most areas

<p>Aluminum fiberglass</p> Signup and view all the answers

Very substantial chunks, weighing __ pounds or more can collapse from the result of fire. (Spalling)

<p>100</p> Signup and view all the answers

The upper floors of structures are the last to be built but the first to be ____ because of the desirability of a view and prestige

<p>Rented</p> Signup and view all the answers

To compound the issue, most construction codes allow these lower floors to remain _____, even though the finished areas, often with a lighter fire loads, require sprinklers

<p>Unsprinklered</p> Signup and view all the answers

It is a very simple matter to install a basic exposed pipe sprinkler system with __ in outlets leading to each head, instead of having the head mounted in the fitting with its __ in thread

<p>1 1/2</p> Signup and view all the answers

He designed one sprinkler system in a prefinished building with the sprinkler lines spaced only __ ft apart (100 sq ft per head)

<p>10</p> Signup and view all the answers

Stairwell doors and doors between occupancy’s are often ___ open to facilitate the passage of material from one area to another

<p>Blocked</p> Signup and view all the answers

The only way to prevent a catastrophe such as the towering inferno is by proper ____ of the structure and its protection systems, ____ of the applicable codes with an eye towards fire prevention and extinguishingment and education of the owners and occupants of the building abou

<p>Engineering enforcement</p> Signup and view all the answers

The ff death rate at a vacant building is _-5 times that of fires in occupied residential buildings

<p>3</p> Signup and view all the answers

An empty ____ indicates that a building is of normal structural stability and normal interior operations may be conducted depending on the extend of the fire found on arrival

<p>Square</p> Signup and view all the answers

A box with one ___ drawn _____ through it indicates a serious hazard, such as holes in the floor and signals that all ops should be conducted from the exterior if possible.

<p>Line diagonally</p> Signup and view all the answers

A box with an _ drawn through it indicates ____ hazards and all firefighting should be done from the exterior. If a small fire requires a crew to enter, permission must be sought from the IC

<p>X severe</p> Signup and view all the answers

Alexandria VA uses ____ signs to mark their vacant buildings while Nassau New York uses _____ signs

<p>Paper cardboard</p> Signup and view all the answers

The thing that will save you is ____ when operating in or around these ff death traps

<p>Caution</p> Signup and view all the answers

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