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SAKHELWE COMMUNITY HALL DETAILED DESIGN REPORT

NKANGALA DISTRICT MUNICIPALITY

CONSTRUCTION OF SAKHELWE COMMUNITY HALL –

EMAKHAZENI LOCAL MUNICIPALITY

PROJECT NO: 34415

DETAILED DESIGN REPORT

CIVIL AND STRUCTURAL

OCTOBER 2016

PREPARED BY: PREPARED FOR:

Seroadime Consulting Engineers Nkangala District Municipality

Box 783056 Box 437

Sandton Middelburg

2146 1050

Tel: (078) 272 8407 Tel: (013) 249 2000

Fax: (086) 528 6392 Fax: (013) 249 2145

Email: [email protected]

mailto:[email protected]

http://seroadime.co.za/

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Document Verification Form

Job Number Job Title

34415 SAKHELWE COMMUNITY HALL

File Reference Document Title

DETAILED DESIGN REPORT

Revision Date Description

0 03/10/2016 STRUCTURAL - DETAILED DESIGN REPORT

Prepared by Checked by Approved by

Name

Paul Nanguia, Pr.Eng Techn

AM BANDA Pr.Eng

Signature

Description


Name

Signature

Description


Name

Signature

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NEW SAKHELWE COMMUNITY HALL

DETAILED ENGINEERING DESIGN REPORT

EXECUTIVE SUMMARY

This report entails the detailed engineering design of the structural and civil engineering

services for the proposed new community hall at Sakhelwe in Dullstroom, Mpumalanga

province.

The purpose of this report is the final design of the structure and services for the following:

a) Design criteria and standards for the building structural elements

b) Design criteria and standards for the design of water supply and sewerage

c) Design criteria and standards for road/parking and storm water drainage to the proposed

health centre.

d) Connection to existing and proposed bulk services including the demand on those

services.

e) The layout, size and capacity of internal services and the construction methods and

materials.

Civil Engineering has focused on the provision of access to the facility, parking and storm

water handling, potable water connection and sewerage infrastructure.

Structural Engineering has focused on the selection and provision of suitably sized building

structural elements to ensure that the loads that are imposed on the building structure are

absorbed by the structural elements and safely transmitted to the ground through the

foundations. The approach has been adopted to, first uphold public safety in the design and

secondly to design economic and cost effective infrastructure.

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DETAIL DESIGN REPORT

TABLE OF CONTENTS SECTION 1: INTRODUCTION………………………………………………….. 2 SECTION 2: PROJECT DESRIPTION………………………………………… 4 SECTION 3: TECHNICAL REPORT ………………………………………….. 7

SECTION 4: RECOMMENDATIONS……………………………………………. 12 SECTION 5: CONCLUSIONS …………………………………………………….. 15

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APPENDICES

A Loading Loading Layout

B Drawings Site Layout

Earthworks Layout

Foundation Layout

Roof Truss Layout

Water Layout

Sewer Layout

C Calculations Calculations

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SECTION 1: INTRODUCTION AND TERMS OF REFERENCE

1.1 Introduction

The project entails the development of the proposed new community hall at Sakhelwe in

Dullstroom, Mpumalanga province. The site is located within Sakhelwe township in

Dullstroom. The image below shows the locality Map of the site.

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Image 1: Locality Map

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1.2 Terms of Reference

Seroadime Consulting Engineers has been appointed by Nkangala District Municipality as the

Civils and Structural Engineers for the provision of professional services with regards to this

development

The purpose of this report is provide the final design output for the following:

1.2.1 Design criteria and standards for the design of water supply, sewerage and stormwater

to the proposed development.

1.2.2 Connection to existing and proposed bulk services including the demand on those

services.

1.2.3 The layout, size and capacity of internal services and the construction methods and

materials.

1.2.4 Design criteria and standards for the design of structural components to the proposed

development

1.3 Scope of Work

The scope of Civil Engineering comprises of the design and specification of:

Access road, parking and storm water infrastructure

Potable water supply to the facility

Sewer reticulation and connection to existing outfall sewer line.

The scope of Structural Engineering comprises of the design and detailing of:

The foundations and ground preparations under the foundations

The support elements which include concrete columns, brick walls and columns,

steel columns

The Roofs and all the structures for the support of roof covering which include steel

beams and trusses, concrete beams and slabs as well as timber trusses

The above work includes the preparation of tender drawings, and the preparation of

construction drawings, and construction monitoring. The scope of work for civil and structural

engineering covers the entire scope of work as defined by the Engineering Council of South

Africa. The work include facilitating the Geotechnical Investigation and Topographical survey.

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1.4 Design Approach

The civil and structural Engineering infrastructure has been designed to support and achieve

the effect as specified in the Architectural Drawings.

Coordination has been done with other services such as electrical, mechanical and wet

services to avoid clashes on positioning of underground services on site.

The designs have been carried out in the following stages:

Serviceability Limit State

a) Deflection check

b) Fire resistance

c) Crack control

Ultimate Limit State

a) Flexural failure check

b) Compression resistance

c) Tensile resistance

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SECTION 2: Project Description

2.0 DESCRIPTION OF THE PROJECT

The project comprises of the following:

a. Construction of new 432-capacity community hall

b. Construction of a new guard house

2.1 The Proposed New Community Hall

The new community hall structure comprises of a ground floor, structural steel columns built

in brickwork, steel trusses and a kliplock roof sheeting.

Ablutions, change rooms, canteen are outside buildings attached to the main building. These

structures will have timber roof trusses

2.2 The proposed New Guard House

The new guard house structure comprises of a ground floor, brickwork walls, timber trusses

and a kliplock roof sheeting.

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2.3 Available Information The following information has been made available by both the client and other members of

the professional team.

2.3.1 The Proposed New Building

Information for the new or proposed building comprises of the following:

a) Architectural, Electrical Engineering, Mechanical Engineering and Civil Engineering

Drawings.

b) Topographical Survey report and drawing

2.3.2 Details of External Façade The details of the external façade on the new buildings is brick cladding.

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SECTION 3: DESIGN

3.0 STRUTURAL ENGINEERING DESIGN

The purpose of structural engineering is to design and so arrange the structural elements that all the

loads that are supported by or imposed on the structure are safely transmitted to competent

foundations and then to the ground.

3.1 Design Codes of Practice

Structural design has been carried out in accordance with the South African National Standards (SANS) as published by the South African Bureau of Standards (SABS). The following codes of practice have been used:

Table 3.1: Design Codes

Material/Element Code Description

Concrete SANS 10100 -1:

The Structural Use of Concrete, Part 1: Design

SANS 10100 – 2:

The Structural Use of Concrete, Part 2: Materials and Execution of Work.

Steel

SANS 10162 – 1,

Structural Use of Steel Part 1: Limit State Design of Hot-Rolled steelwork

SANS 10162 – 2,

The Structural Use of Steel Part 2: Limit State Design of Cold Formed steelwork

Foundations

SANS 10161:

The design of foundations for buildings.

Loading (self weight, imposed loads, wind actions etc.)

SANS 10160-2:

Basis of Structural Design and actions for buildings and industrial structures Part 1 to 8.

Timber

SANS 10163-1: The Structural use of Timber, Part 1: Limited State Design.

Masonry

SANS 10164-1 The Structural use of Masonry, Part 1: Unreinforced Masonry Walling.

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3.2 Loading

The imposed gravity loading for the new community hall building are as follows:

Occupancy

Design Load

(KN/m²)

(a) Offices 3.0

(b) Common Areas* 5.0

(c) Roof 0.5

*Note that the building is a single storey structure. The loads on the floors are generally loads on the ground, which can also be classified as surcharge Lateral loading consists of wind loading for the design wind speeds associated with the

location of the building.

Wind Data: The fundamental value of the basic wind speed is 40m/s (10 min mean wind

speed) as defined in SANS 10160-3: 2011 shall be used.

Terrain Category: The applicable category is Terrain Category C (i.e. an open area without

regular cover of buildings)

Site altitude: For the Dullstroom/Mpumalanga Area the altitude above sea level is 2037 m

The area is not known to be prone to seismic activity. Accordingly no seismic loading been considered.

3.3 The New Community Hall Building

The design loads for the building is shown on the drawings in appendix A.

The proposed building has been designed as a structural steel framed structure comprising of

reinforced concrete footings, steel columns, and steel roof trusses.

Gravity loads will be taken by the steel trusses and transferred to the columns. These vertical

members will transmit the loads to the foundations and the foundations will take the loads into

the ground.

Lateral loads, in the form of wind loads will be taken in by the cladding and transferred to the

frame as horizontal loads.

The frame has been designed to carry any lateral loads.

3.4.1 Trusses The roof trusses comprise of steel trusses. The steel trusses consist of 1500mm deep parallel

truss with top chord, bottom chord and cross members. Generally the members are angle

sections.

The whole truss system is designed to deflect within allowable limits of deflection. Individual

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members of the truss are designed to resist tensile and compressive forces accordingly.

Furthermore, the individual members are checked for slenderness adequacy, so that they do

not buckle under the applied loads.

Bracing members have been provided to provide lateral stability of the structure.

Sag rods have been provided to provide stability to the purlins by preventing twisting of such

members

3.4.2 Columns Columns have generally been designed as unbraced non-slender columns. The columns are

generally 254x146x23 I - sections. These columns are built within brickwork.

The columns are connected to the footings with a base plate and holding down bolts. Holding

down bolts will be cast within the concrete.

3.4.3 Walls

230mm brickwalls, as shown on the drawings will be built as facade. Most of this brickwork is non-load bearing brickwork. The brickwork for the external structures and the guard house are load-bearing brickwork. All 110mm thick brickwork is non-load bearing brickwork Expansion joints in brickwork to be provided at every third steel column 3.4.4 Foundations

From the geotechnical report, the area is not within dolomitic area. The specific area is

underlain with gravely soil with some few rock outcrops. The foundation recommended is Pad

footings for columns and strip footings for brickwalls. The minimum soil bearing capacity of

200 MPa has been specified.

3.5 Design Documentation

Design documentation consists of drawings and engineering calculations.

The drawings, contained in Appendix B, consists of the following:

a) Architectural Layouts

b) Setting out drawings

c) Concrete Layouts and details

d) Steel layouts and details.

The calculations of the structural elements have been included in Appendix C.

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SECTION 4: RECOMMENDATIONS

From the designs, it is found that a durable, cost effective structure can be built.

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SECTION 5: CONCLUSION

The project is feasible from a civil and structural engineering point of view. More attention to

be paid on implementation and construction monitoring, to ensure that the project is executed

within time limits and costs

APPENDIX A

ROOF LOADING LAYOUTS

SAKHELWE COMMUNITY HALL.

NEW COMMUNITY HALL

PROJECT EXECUTION PLAN

PAGE 1

ANNEXURE B

DRAWINGS

B1: Architectural Layouts

B2: Earthworks

B3: Foundation layout and details

B4: Steel layout and details

B5: Water layout

B6: Sewer layout


SAKHELWE COMMUNITY HALL.

NEW COMMUNITY HALL

PROJECT EXECUTION PLAN

PAGE 2

ANNEXURE C

ENGINEERING CALCULATIONS


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NKANGALA DISTRICT MUNICIPALITY CONSTRUCTION OF SAKHELWE ... Design... · -4-1- sakhelwe community hall detailed design report nkangala district municipality construction of sakhelwe