---
title: "Shoring types and flying shore"
subject: "Building Technology"
chapter: 8
key: "semester_6/building_technology:shoring-flying"
source: https://www.bctengineer.com/q/semester_6/building_technology/shoring-flying
site: BCT Engineering
---

# Shoring types and flying shore

Building Technology · Chapter 8: Temporary construction

- Asked in: 2075 Baisakh, 1+3+4 marks; 2073 Bhadra (asked 2 times)
- Video: [What is shoring Types of Shoring | Raking Shores | Flying shores | Dead shores | Construction repair](https://www.youtube.com/watch?v=M98t5HHMRJU) — Real civil
- Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14
- Page: https://www.bctengineer.com/q/semester_6/building_technology/shoring-flying
- Whole chapter: https://www.bctengineer.com/md/semester_6/building_technology/chapter-8

## Question

Define shoring (list out its types). Explain (describe) flying shoring with necessary sketches.

## Short answer

Shoring is temporary support to unsafe structures using inclined, horizontal or vertical members; types are raking, flying, and dead shores. Flying shoring supports two parallel walls across a 3-9 m gap via horizontal shores on wall plates and needles, with inclined struts to straining pieces, keeping ground clear. It uses wall plates, needles, horizontal shores, struts, cleats, straining pieces and wedges.

## Answer

**Shoring** is the temporary support given to an unsafe wall, building or structure to prevent it from collapsing, using inclined, horizontal or vertical timber or steel members, until permanent repair or reconstruction is done.

#### Types
- Raking (inclined) shore
- Flying (horizontal) shore
- Dead (vertical) shore

#### Flying shore
**Flying (horizontal) shore:** used when two parallel walls with a narrow gap (3-9 m) between them are to be supported, e.g. when the building between them is demolished. A **horizontal shore** is fixed between wall plates on the two walls, supported on needles, with inclined **struts** from lower needles up to **straining pieces** on the horizontal shore. No part touches the ground, hence "flying".

```text
  wall                                      wall
  |  ||==N====== horizontal shore ======N==||  |
  |  ||     [sp]                  [sp]     ||  |
  |  ||      /                      \      ||  |
  |  ||    /   strut          strut   \    ||  |
  |  ||  /                              \  ||  |
  |  ||N/                                \N||  |
  |  ||                                    ||  |
  || = wall plate, N = needle, [sp] = straining piece
```
A single flying shore is used for gaps up to about 9 m; a double (compound) flying shore is used for wider gaps. The system is cheaper than raking shores and keeps the ground clear for work.

**Parts:** wall plates, needles, horizontal shores, struts, cleats, straining pieces and folding wedges.
**Use:** when the buildings on both sides of a gap must be supported, such as after demolition of the building between them, or during alteration of one wall.

## Check yourself

The answer's key points as multiple-choice questions, with the correct option and why.

1. Which list gives the three types of shoring?
   A. Single, double, cantilever
   B. Raking, flying, dead
   C. Pit, pile, pretest
   D. Stay, box, vertical
   Answer: B. Shoring is classified as raking (inclined), flying (horizontal) and dead (vertical). (Key point: Types of shoring)

2. Why is it called a flying shore?
   A. It is lifted by a crane
   B. No part of it touches the ground
   C. It is made of light metal
   D. It is used at great heights only
   Answer: B. The horizontal members span between the walls with no part touching the ground. (Key point: Why 'flying')

3. A single flying shore is suited to a gap of up to about:
   A. 3 m
   B. 9 m
   C. 15 m
   D. 30 m
   Answer: B. Single flying shores are used for gaps up to about 9 m; double flying shores for greater heights. (Key point: Single vs double flying)

## Related in Building Technology

- [Why shoring; racking versus flying shore](https://www.bctengineer.com/question.md?key=semester_6%2Fbuilding_technology%3Ashoring-racking-flying) — Building Technology, chapter 8
- [Flying shoring with neat sketches](https://www.bctengineer.com/question.md?key=semester_6%2Fbuilding_technology%3Aflying-shoring-sketch) — Building Technology, chapter 8
- [Types of shoring; raking shore](https://www.bctengineer.com/question.md?key=semester_6%2Fbuilding_technology%3Ashoring-raking) — Building Technology, chapter 8
- [Objectives of shoring; dead shore](https://www.bctengineer.com/question.md?key=semester_6%2Fbuilding_technology%3Ashoring-dead-shore) — Building Technology, chapter 8